I. Overview KSD301 is the most versatile disc-shaped bimetallic snap-action thermostat switch, commonly known as “temperature protector/thermostat”, featuring automatic reset, high current, and insulated housing, widely used in household appliances and industrial equipment.
II. Operating Principle  Core: The disc-shaped bimetallic strip senses temperature. When the temperature rises to the set value, it instantly snaps and deforms, triggering the contact action (opening/closing).
Cool down to the reset temperature (about 10–30℃ lower than the operating temperature) → metal plate rebounds → contacts return to their original state, automatically resetting.
Contact form: Normally closed (NC) (default, disconnected upon overheating), normally open (NO) (connected upon overheating).
III. Model and Specifications (Commonly Used)  Example Model: KSD301 85℃ NC (Normally Closed, disconnects at 85℃).
Operating temperature: 30℃～250℃, commonly used: 55/65/75/85/95/105/120℃; every 5℃ as a step.
Temperature tolerance: ±2℃, ±3℃, ±5℃ (commonly used ±3℃).
Reset temperature difference: 10~30℃ (e.g. disconnect at 85℃ → reset at about 65℃).
IV. Electrical Parameters (Resistive Load)  Rated Voltage: 250VAC; 125VAC; 24VDC.
Rated current: 5A/10A/16A @250VAC; 15A @125VAC.
Contact resistance: ≤50mΩ.
Insulation resistance: ≥100MΩ.
Voltage resistance: ≥1500VAC for 1 minute.
Lifespan: ≥10,000 cycles (AC).
Shell material: bakelite (≤160℃), PPS (≤220℃), ceramic (≤300℃).
V. Structure and Installation  Appearance: round piece + dual ear mounting holes, with a diameter of approximately 20mm, a thickness of approximately 4mm, and two foot inserts.
Installation: The metal surface should be tightly attached to the heating element (coated with thermal conductive silicone grease) and secured with M3 screws; the pins should be connected to terminals or soldered.
Features: small size, flexible installation, strong anti-interference, and no arcing.

6. KSD301 vs KSD 01F (Key Differences)
   KSD301: dual-lug disc, high current (10–16A), wide temperature range (30–250℃), a mainstay in home appliances.
   KSD 01F: TO 220 encapsulated, low current (1.5–3A), low temperature (≤150℃), commonly used in PCB/power supply.
7. Typical Applications: Kitchen Appliances: Disinfection cabinets, electric kettles, rice cookers, microwave ovens, and electric ovens.
   Bathroom equipment: water heater, fan heater, bath heater.
   Industry / Power Supply: Overheat protection for frequency converters, motors, power modules, and high-power equipment.
   Others: water dispensers, clothes dryers, electric irons, car seat heaters.
8. Selection points 1. Contact type: normally closed (NC) (overheat disconnection, protection) or normally open (NO) (overheat closure, alarm).
9. Operating temperature: Select based on the maximum allowable temperature of the equipment (e.g., 85℃ is commonly used for water heaters).
10. Load current: Not exceeding 16A at 250VAC.
11. Shell material: For high temperatures (>160℃), choose ceramic or PPS; for low temperatures, choose bakelite.

I. Brand and Positioning INFEIMI JUC-31Fis a domestic snap-action bimetallic temperature switch (thermostat) with TO 220 plastic encapsulation and straight-through two pins. It features a small size, low cost, and automatic reset, and is used for overheat protection and temperature control in PCBs, power supplies, power amplifiers, and other applications.
II. Operating Principle  Core: Bimetallic strip temperature sensing, temperature rise → metal strip deforms and snaps → contact action (on/off); automatic reset after temperature drop.
Normally closed (Type D): Normally conductive → disconnects upon overtemperature → reconnects upon temperature reduction (most commonly used).
Normally open (H type): normally disconnected → overtemperature closed → disconnected when temperature drops.

III. Model and Specification (INFEIMI)  Model Examples: JUC-31F D65 (Normally Closed, Acts at 65°C); KSD 01F H80 (Normally Open, Acts at 80°C).
Operating temperature: 25℃～150℃ (commonly used: 40/45/50/65/70/85/95/100℃).
Temperature tolerance: ±3℃ (≤100℃), ±5℃ (>100℃).
Reset temperature difference: approximately 20℃ to 30℃ (e.g., disconnected at 65℃ → reset at approximately 40℃).
IV. Electrical Parameters  Contact Load: 220VAC 1.5A/3A; 24VDC 1.5A/3A.
Insulation resistance: ≥100MΩ (at room temperature and humidity).
Contact resistance: ≤100mΩ.
 Withstand voltage: ≥1500VAC/1min.
Lifespan: ≥30,000 cycles (under rated load).
Weight: ≈1.8g.
Environmental temperature: -20℃ to +160℃.
V. Structure and Installation  Packaging: TO 220 2, plastic encapsulation, two-pin straight insertion, with an insulating shell.
Size: Approximately 10×4×20mm, with a pin spacing of 5mm.
Installation: Ensure the metal surface is tightly attached to the heating element (apply thermal grease), and insert the pins into the PCB or make the wiring.

I. Brand and Positioning INFEIMI KSD 01F is a domestic snap-action bimetallic temperature switch (thermostat) with TO 220 plastic encapsulation and straight-through two pins. It features a small size, low cost, and automatic reset, and is used for overheat protection and temperature control in PCBs, power supplies, power amplifiers, and other applications.
II. Operating Principle  Core: Bimetallic strip temperature sensing, temperature rise → metal strip deforms and snaps → contact action (on/off); automatic reset after temperature drop.
Normally closed (Type D): Normally conductive → disconnects upon overtemperature → reconnects upon temperature reduction (most commonly used).
Normally open (H type): normally disconnected → overtemperature closed → disconnected when temperature drops.

III. Model and Specification (INFEIMI)  Model Examples: KSD 01F D65 (Normally Closed, Acts at 65°C); KSD 01F H80 (Normally Open, Acts at 80°C).
Operating temperature: 25℃～150℃ (commonly used: 40/45/50/65/70/85/95/100℃).
Temperature tolerance: ±3℃ (≤100℃), ±5℃ (>100℃).
Reset temperature difference: approximately 20℃ to 30℃ (e.g., disconnected at 65℃ → reset at approximately 40℃).
IV. Electrical Parameters  Contact Load: 220VAC 1.5A/3A; 24VDC 1.5A/3A.
Insulation resistance: ≥100MΩ (at room temperature and humidity).
Contact resistance: ≤100mΩ.
 Withstand voltage: ≥1500VAC/1min.
Lifespan: ≥30,000 cycles (under rated load).
Weight: ≈1.8g.
Environmental temperature: -20℃ to +160℃.
V. Structure and Installation  Packaging: TO 220 2, plastic encapsulation, two-pin straight insertion, with an insulating shell.
Size: Approximately 10×4×20mm, with a pin spacing of 5mm.
Installation: Ensure the metal surface is tightly attached to the heating element (apply thermal grease), and insert the pins into the PCB or make the wiring.

I. Overview MP930 is a series of high-power ceramic thick-film resistors from the INFEIMI brand, packaged in TO 220. It features non-inductive, high-power, high-precision, and can be mounted with a heat sink. It is commonly used in high-power scenarios such as current sampling, buffering/absorption, and load management in power supplies, servo systems, and battery equipment.
II. Core Structure and Features  Process: Ceramic substrate + thick film resistor layer High-temperature sintering, with the resistor film integrated with the ceramic, resulting in good heat dissipation and high stability.
Package: TO 220 2 (two pins), with a bare ceramic heat dissipation surface on the back, allowing for direct attachment of a heat sink, making installation convenient.
Non-inductive design: Special resistor pattern, extremely low inductance, suitable for high-frequency, switching power supplies, snubber circuits, and RF (up to 500MHz at 50Ω).
Electrical isolation: The resistor body is isolated from the heat dissipation surface with an AC voltage of 1500Vrms, ensuring safety and reliability.
III. Key parameters (typical values)  Power: 30W @25℃; derated to 0W at 150℃.
Resistance range: 0.02Ω～4.99kΩ; options as low as 0.01Ω are available, suitable for high-current sampling.
Accuracy: o≥0.05Ω: ±1% (mainstream) o0.02～0.04Ω: ±5% oSome values are optional ±5%/±20%.
Temperature coefficient TCR: -20 to +80 ppm/℃.
Operating temperature: -55℃ to +150℃.
Voltage resistance: 250V.
Dimensions: 10.41 × 3.18 × 16.52 mm (length × width × height).
Environmental protection: RoHS compliant.
IV. Model Naming (Example) MP930 0R50 1%  MP930: Series  0R50: 0.5Ω  1%: Accuracy Common Resistance Values: 0.05Ω, 0.1Ω, 0.5Ω, 1Ω, 10Ω, 100Ω, 100kΩ, etc.

5. Main functions and applications 1. Current sampling resistor: Accurately detects high currents (low resistance, 1% accuracy, no inductance) in power supplies, servo drivers, and battery management systems (BMS).
6. Snubber/Absorbing Resistor: RC absorption and spike suppression (non-inductive, high-frequency) for switching power supplies and IGBT/MOSFET circuits.
7. Load/Discharge Resistor: Power supply dummy load, battery discharge, inverter braking (30W high power, heat dissipation available).
8. High-frequency / RF resistors: used in radio frequency circuits and matching networks (low inductance, available up to 500MHz).
   VI. Advantages Comparison  Wirewound Resistors: No inductance, good high-frequency performance, small size; wirewound inductors have large inductance and poor high-frequency performance.
   Ordinary thick film: high power, capable of heat dissipation, good isolation; ordinary thick film has low power and cannot be attached with a heat sink.
   Metal film: low resistance, high power; it is difficult to achieve 0.01Ω with metal film, and it has low power.
   VII. Installation and Heat Dissipation  Directly attaching a heat sink: Apply thermal grease on the ceramic surface on the back, secure with M3 screws, which can significantly increase power (e.g., from 30W to 50W+).
   Pins: Standard TO 220 pins, with a pitch of 5.08mm, suitable for PCB mounting.

1. Series positioning and model (with lead wire = WR suffix) The EE SX67 series is a small U-groove transmissive photoelectric switch from OMRON, available in both connector type and lead wire type (WR, with lead wire); the latter directly features a 3-core flexible lead wire, making on-site wiring more convenient and providing better protection.
   Model rule: EE SX67□ WR (with lead wire)Output: NPN/PNP selectable; Action mode: switchable between light-on and light-off.
   Common models with leads: oEE SX670 WR: Standard straight slot, NPN, light-entering ON (default) oEE SX670P WR: PNP output oEE SX671 WR: L-shaped oEE SX672 WR: T-shaped (slot center 7mm) oEE SX673 WR: T-shaped (slot center 10mm) II. Operating Principle oEE SX670 WR: Standard straight slot, NPN, light-entering ON (default) oEE SX670P WR: PNP output oEE SX671 WR: L-shaped oEE SX672 WR: T-shaped (slot center 7mm) oEE SX673 WR: T-shaped (slot center 10mm) II. Operating Principle oEE SX670 WR: Standard straight slot, NPN, light-entering ON (default) oEE SX670P WR: PNP output oEE SX671 WR: L-shaped oEE SX672 WR: T-shaped (slot center 7mm) oEE SX673 WR: T-shaped (slot center 10mm) II. Operating Principle oEE SX670 WR: Standard straight slot, NPN, light-entering ON (default) oEE SX670P WR: PNP output oEE SX671 WR: L-shaped oEE SX672 WR: T-shaped (slot center 7mm) oEE SX673 WR: T-shaped (slot center 10mm) II. Operating Principle oEE SX670 WR: Standard straight slot, NPN, light-entering ON (default) oEE SX670P WR: PNP output oEE SX671 WR: L-shaped oEE SX672 WR: T-shaped (slot center 7mm) oEE SX673 WR: T-shaped (slot center 10mm) II. Operating Principle oEE SX670 WR: Standard straight slot, NPN, light-entering ON (default) oEE SX670P WR: PNP output oEE SX671 WR: L-shaped oEE SX672 WR: T-shaped (slot center 7mm) oEE SX673 WR: T-shaped (slot center 10mm) II. Operating Principle oEE SX670 WR: Standard straight slot, NPN, light-entering ON (default) oEE SX670P WR: PNP output oEE SX671 WR: L-shaped oEE SX672 WR: T-shaped (slot center 7mm) oEE SX673 WR: T-shaped (slot center 10mm) II. Operating Principle oEE SX670 WR: Standard straight slot, NPN, light-entering ON (default) oEE SX670P WR: PNP output oEE SX671 WR: L-shaped oEE SX672 WR: T-shaped (slot center 7mm) oEE SX673 WR: T-shaped (slot center 10mm) II. Operating Principle oEE SX670 WR: Standard straight slot, NPN, light-entering ON (default) oEE SX670P WR: PNP output oEE SX671 WR: L-shaped oEE SX672 WR: T-shaped (slot center 7mm) oEE SX673 WR: T-shaped (slot center 10mm) II. Operating Principle oEE SX670 WR: Standard straight slot, NPN, light-entering ON (default) oEE SX670P WR: PNP output oEE SX671 WR: L-shaped oEE SX672 WR: T-shaped (slot center 7mm) oEE SX673 WR: T-shaped (slot center 10mm) II. Operating Principle oEE SX670 WR: Standard straight slot, NPN, light-entering ON (default) oEE SX670P WR: PNP output oEE SX671 WR: L-shaped oEE SX672 WR: T-shaped (slot center.
   No object: Infrared light directly reaches the receiving end → light input ON (output is turned on).
   Object entering the slot: The light beam is blocked → Shading OFF (output disconnected); it can be switched to Shading ON via dialing.
    Detection object: ≥2×0.8mm opaque objects (metal, plastic, paper, label) OMRON Automation (China) Co., Ltd.

III. Core Electrical Parameters (With Leads)  Power Supply: DC 5–24V ±10%, Ripple ≤10% OMRON Automation (China) Co., Ltd.  Consumption Current: ≤12mA OMRON Automation (China) Co., Ltd.  Output: oNPN: Open Collector, 100mA max, Residual Voltage ≤0.8V OMRON Automation (China) Co., Ltd. oPNP: Open Collector, 50mA max, Residual Voltage ≤1.3V OMRON Automation (China) Co., Ltd.  Response Speed: ≤1ms, Response Frequency ≥1kHz (Typical 3kHz) OMRON Automation (China) Co., Ltd.  Indicator Light: Red LED, Illuminated (Type A / Type R Shielded Illuminated) OMRON Automation (China) Co., Ltd.  Protection: IP50 (Wire Type), Dust and Splash Proof; Connector Type IP40  Ambient Temperature: −25℃～+55℃ (Operating), −30℃～+80℃ (Storage) OMRON Automation (China) Co., Ltd.  Protection: Reverse Connection, Short Circuit, Load Short Circuit Protection

IV. Features of Wired (WR) 1.3 Direct 3-conductor wiring: Brown = V+, Blue = GND, Black = OUT, no plug required, quick wiring.

2. Flex-resistant wire: suitable for frequent movement/vibration scenarios, with less risk of core breakage.
3. Integrated protective cover: The connection between the wire and the shell is reinforced to prevent oil and water ingress, ensuring a longer lifespan.
4. Small size (approximately 2.3g): Fix with M3 screws, align the slot and install.
5. Main functions: 1. Object presence/absence detection: presence/absence of paper, labels, workpieces, and stoppers.
6. In place / Limit / Home: equipment limit, home positioning, material level monitoring.
7. High-speed counting/speed measurement: With the rotating shield, it has a 1kHz response, suitable for assembly lines and motor speed measurement.
8. Broken wire/stall alarm: Detection of broken wires, materials, and chains, as well as stalls.
9. Door status/safety protection: Small equipment door switch, safety door interlock.

VI. Wiring Instructions (3-Wire, with Leads) Table Color | Function | Wiring | Brown | Power + | DC5–24V | Positive | Blue | Power− | 0V/GND | Black | Output | OUT | NPN→Connect load to GND; PNP→Connect load to V+ | NPN Wiring Example: Black→PLC Input Point→PLC COM (24V−).
PNP wiring example: Black wire → PLC input point → PLC COM (24V+).

VII. Typical Applications  Office equipment: paper detection and paper feeding synchronization for printers/copiers.
Industrial automation: assembly line workpiece counting, position detection, limit switches.
Home appliances / vending machines: product detection, material level, door status.
Electronic equipment: core in place, tape/floppy disk position detection.

1. Model and Brand: EE SX670 – 674, a classic U-groove transmission type photoelectric switch belonging to the EE SX67 series, used for non-contact detection of object presence, positioning, or counting.
   II. Core Operating Principle: One side of the interior is equipped with a 940nm infrared LED emitter, while the other side features a photosensitive transistor receiver, forming a U-shaped light slot (with a slot width of 5mm).
   When there is no object: Infrared light directly reaches the receiving end, outputting ON (light-on).
   When an object is inserted into the slot, the light beam is blocked, and the output is OFF (light-blocking and disconnected); it can be switched to light-blocking ON / light-entering OFF mode.
   Detection object: opaque objects (metal, plastic, paper, etc.) with a size of ≥2×0.8mm.
   III. Key electrical parameters: Power supply: DC 5–24V (wide voltage compatibility).
   Output: NPN open collector, maximum load 100mA.
   Response speed: ≤1ms, response frequency 1kHz, suitable for high-speed counting.
   Operating temperature: -25℃ to +85℃.
   Protection level: IP40 (connector type) / IP50 (conductor type), dust and splash proof.
   Indicator light: The red light is on when light enters, facilitating debugging.
   IV. Main functions 1. Object presence detection: Detect whether there is an object (such as paper, label, workpiece) inside the U-shaped slot.
2. In-place/limit detection: equipment limit, origin positioning, material level detection.
3. Counting and speed measurement: Cooperate with the blocking plate to achieve high-speed counting and motor speed monitoring.
4. Broken wire/stall detection: Alarm for broken material/stall of conveyor belts, wires, and chains.
5. Automatic door/limit control: door switching and safety protection detection for small equipment.
   V. Structure and Wiring  Structure: U-shaped slot, 5mm wide; connector type (4 pins) or wire lead-out type (3 wires: V+, GND, OUT).
   Wiring: oV+: Connect to the positive terminal of DC 5–24V.
   oGND: Connect to the negative terminal of the power supply.
   OUT: NPN output, connect load (relay, PLC input) to GND.
   VI. Typical application scenarios for office equipment: presence or absence of paper, paper feed detection for printers/copiers.
   Industrial control equipment: assembly line workpiece counting, in-place detection, limit switch.
   Home appliances / vending machines: product detection, material level monitoring, door status detection.
   Electronic equipment: Tape/floppy disk in place, core position detection.
6. Characteristics and Advantages: Non-contact detection: no mechanical wear, long lifespan, and high reliability.
   High-speed response: 1kHz frequency, suitable for dynamic detection.
   Wide voltage supply: DC5–24V, compatible with most control systems.
   Strong anti-interference capability: infrared light, built-in voltage regulation and short circuit protection.
   Easy to install: small size (about 2.3g), fixed with M3 screws, just align the slot.
7. Common Model Differences (EE-SX67 Series) EE-SX670: NPN output, standard type, with switchable light-on/light-off.
   EE‑SX670P: PNP output, compatible with PLC positive input.
   EE‑SX671/672: Different slot widths/installation dimensions, suitable for narrow slots or special installations.

Packaging and miniaturization: SMD thick film resistors (primarily 0402/0603/0805) are preferred, suitable for high-density layout of robot circuit boards (due to limited internal space, power boards/main control boards are mostly miniaturized PCBs). For high-power modules (power supplies/motors), 2512/1206 power-type SMDs can be selected to replace plug-in resistors, further saving space.

Power and Temperature Resistance: The main control/sensing module should be chosen for low power (1/16~1/8W), while the power supply/drive module should be selected for medium to high power (0.5~3W). The temperature range should meet the requirements of -40℃~+125℃, accommodating the temperature variation environment of restaurant air-conditioned rooms (low temperature) and motor/power supply heating (high temperature).

Accuracy and temperature drift (TCR): For conventional control/current limiting, a precision of 5%/1% is sufficient; the sensing and detection module is the core, requiring a high precision of 0.1% to 0.5% coupled with low TCR (±25/±50ppm/℃) to avoid resistance drift due to temperature/vibration, which could lead to incorrect obstacle avoidance decisions and inaccurate food weight detection.

Vibration resistance and adhesion: Select resistors with high adhesion and thick film technology (where the thick film layer is tightly bonded to the ceramic substrate), meeting the IEC mechanical vibration standards (generally ≥10g acceleration), suitable for bumps and wheelset vibrations during robot travel, to prevent the resistor film from peeling off and sudden changes in resistance value.

Environmental protection: For the high humidity, oil fume, and slightly corrosive environment of restaurants, the resistance needs to meet moisture resistance (above IP40) and salt spray resistance (48 hours). It should be combined with the overall conformal coating treatment of the circuit board to prevent oxidation of the resistance pins and moisture-induced failure of the film layer.

3. Compared to other resistors, thick-film resistors have core advantages that make them suitable for food delivery robots. Food delivery robots are commercial mass-produced equipment with high requirements for “cost + reliability + production efficiency”. Compared to thin-film resistors and carbon film resistors, thick-film resistors are the most suitable choice, with five core advantages:

High cost-effectiveness and suitable for large-scale production: The thick film resistor technology is mature and the production cost is low (far lower than that of thin film resistors), meeting the bulk procurement needs of food delivery robot manufacturers. Each robot requires approximately 50 to 200 resistors, and the low cost can significantly control the overall BOM cost of the robot.

High power density and strong adaptability to miniaturization: Thick-film resistors, with ceramic as their substrate, exhibit excellent heat dissipation. In the same package, their power output significantly surpasses that of carbon-film resistors (for instance, a 0805 thick-film resistor can achieve 1W, whereas a carbon-film resistor can only manage 0.25W). This makes them an ideal fit for the miniaturized layout of robot circuit boards.

High reliability and adaptability to mobile working conditions: The thick film layer is made of high-temperature sintered metal ceramic slurry, featuring high mechanical strength and resistance to vibration/impact. Unlike carbon film resistors, which are prone to wear and resistance drift, this film layer can meet the long-term operational requirements of high-load mobile robots (commercial robots require trouble-free operation for ≥10,000 hours).

Compatible with automated production and enhancing production line efficiency: The chip thick-film resistors are perfectly compatible with the fully automated SMT chip mounting process. The circuit boards of the meal delivery robots are all produced through large-scale SMT, eliminating the need for additional production line adjustments and significantly improving production efficiency.

Stable electrical performance and small temperature/load drift: Compared to carbon film resistors, thick film resistors exhibit smaller drift in resistance with temperature and load, ensuring long-term stability of the circuit and avoiding issues such as power overcurrent, motor stall, and sensor misjudgment caused by resistor drift.

4. Precautions for Practical Applications: High-power modules require enhanced heat dissipation: The 1~3W power-type thick-film resistors on the power board and motor drive board should be kept away from heating components (such as MOSFETs and chips) on the PCB. If necessary, copper sheets can be placed under the resistors to dissipate heat and prevent overheating and burnout of the resistors.

Separate selection and control of sensing modules: High-precision thick-film resistors for obstacle avoidance and weight detection require separate incoming inspection to avoid the inclusion of resistors with unqualified precision, which could lead to the failure of the robot’s core detection functions (such as collisions with people and food falling).

Coordinating with circuit board three-proofing treatment: The oil fumes and water vapor in the restaurant environment are the main causes of resistor failure. The robot’s circuit board needs to be sprayed with three-proofing paint (moisture-proof, salt spray-proof, and mold-proof) to cover the film layer and pins of the thick-film resistor, thereby enhancing the overall protection level.

Avoid exceeding specifications: It is strictly prohibited to use low-power thick-film resistors in high-power circuits of power supplies/drivers. Otherwise, the resistors may instantly heat up and burn out, causing short circuits on the circuit board and robot shutdown.

With the continuous increase of new energy vehicle charging power, the demand for high-power, high-reliability resistors in charging equipment continues to grow. The MP100W series high-power resistors (Model: MP100W 15.0R 5%) from INFEIMI, with 100W rated power, 15Ω resistance and ±5% precision, have become the core choice for bleeder and snubber circuits in charging modules.

Adopting square package and efficient heat dissipation design, this product can withstand instantaneous high current impact, adapt to extreme working environments from -40℃ to 125℃, and is widely used in DC fast charging piles, on-board OBC (on-board charger) and other scenarios. With 13 years of R&D experience in semiconductor power devices, INFEIMI provides stable and efficient resistor solutions for the new energy charging field, helping the industry develop efficiently.

In high-frequency and high-efficiency scenarios such as industrial power supplies and photovoltaic energy storage, non-inductive, high-stability power resistors are core components to ensure system safety. The MHP20S series non-inductive thick film resistors (Model: MHP20S 0R33 F) launched by INFEIMI, with TO-220 package, 0.033Ω low resistance and ±1% high precision, have become an ideal choice for current sampling and overcurrent protection circuits.

Adopting advanced thick film technology, this product can operate stably in a wide temperature range from -55℃ to 155℃. The low inductance design effectively reduces high-frequency switching interference and improves system energy efficiency. At the same time, the 20W rated power and compact package can meet the dual requirements of space and performance for industrial equipment and energy storage modules, and support customized resistance values to provide customers with flexible solutions.

With the rapid growth of the new energy vehicle market, the demand for high-precision, high-reliability power devices in Battery Management Systems (BMS) is increasingly urgent. INFEIMI (Shenzhen Jiading Industrial)’s 20W-100W non-inductive thick film resistor series, with its low inductance, high power density and high temperature resistance, has become an ideal choice for sampling and protection circuits in new energy vehicle BMS.

Our non-inductive thick film resistors adopt TO-220/TO-247 packages, which can operate stably in extreme environments from -55℃ to 155℃. The 1% high-precision error can accurately collect battery voltage and current data, providing reliable protection for battery safety. At the same time, the full series supports customized resistance and power specifications, which can quickly adapt to BMS design requirements of different vehicle models, helping automakers shorten R&D cycles and enhance product competitiveness.