LIZ's thick film resistor product line covers a wide range of needs from basic circuits to high-end industrial applications with diverse series designs and high-performance features. The following provides a detailed analysis based on its core series classification, parameter characteristics, and application market:
1、 The main categories and series of thick film resistors
Lizhi thick film resistors are divided into the following core series based on their functions, resistance ranges, and special application requirements:
Surge resistant thick film resistor (RS series)
Parameter characteristics:
Resistance range: E24/E96 standard (e.g. 3.9K Ω± 1%).
Surge resistance: able to withstand instantaneous high voltage impact, with a maximum operating temperature of 155 ℃ and a power coverage of 0.25W to higher levels.
Temperature coefficient: ± 100ppm/℃ (typical value), insulation resistance>10G Ω, in compliance with RoHS standards.
Application scenarios:
Suitable for scenarios in power management, industrial equipment, and automotive electronics that require resistance to surge currents, such as power switch circuits, motor controllers, etc.
High voltage thick film resistor (RC series)
Parameter characteristics:
Voltage range: Supports high voltage from 500V to 10kV, with packaging sizes covering the entire series from 0603 to 2512.
Accuracy and temperature drift: accuracy ± 0.5%~5%, temperature coefficient 100-200ppm/℃.
Application scenarios:
Mainly used for power transmission equipment, photovoltaic inverters, and medical high-voltage equipment, meeting insulation performance and long-term stability requirements.
Low resistance thick film resistor (UR/LZI series)
Parameter characteristics:
Resistance range: ultra-low resistance (0.1m Ω~10m Ω) and low resistance (10m Ω~100m Ω), with an accuracy of ± 0.1%.
Power and packaging: Power levels range from 1/8W to 1W, supporting 0402~2512 packaging, with a temperature coefficient as low as ± 50ppm/℃.
Application scenarios:
Used for current detection, power management, and motor control, such as new energy vehicle BMS systems, industrial frequency converters, etc.
Wide electrode thick film resistor (RW series)
Parameter characteristics:
Electrode design: Wide electrode structure enhances heat dissipation capability, higher power density, and supports 0402~2512 packaging.
Anti welding crack: strengthened electrode process, suitable for high vibration environment.
Application scenarios:
Suitable for scenarios with high requirements for heat dissipation and mechanical strength, such as automotive electronics and industrial automation equipment.
LED specific thick film resistor (CR series)
Parameter characteristics:
Flexible circuit adaptation: electrode reinforcement design, supporting flexible circuit board applications, with a resistance range of 10 Ω~10K Ω and an accuracy of ± 1%~5%.
High temperature resistance characteristics: Operating temperature range of 55 ℃~125 ℃, in compliance with halogen-free environmental standards.
Application scenarios:
Mainly used for driving circuits in LED lighting (such as soft light strips), wearable devices, and flexible display screens.
2、 Comparison of core parameters and summary of characteristics
|Series | Resistance Range | Accuracy | Temperature Coefficient | Power Class | Package Size | Special Features|
|RS series (anti surge) | E24/E96 standard | ± 1%~5% | ± 100ppm/℃ | 0.25W~2W | 0402~2512 | Anti instantaneous high voltage, high insulation|
|RC series (high voltage) | high resistance value (megaohm level) | ± 0.5%~5% | ± 200ppm/℃ | adjustable according to packaging | 0603~2512 | high voltage resistance, low leakage current|
|UR series (low resistance) | 0.1m Ω~100m Ω | ± 0.1%~1% | ± 50ppm/℃ | 1/8W~1W | 0402~2512 | High precision, low TCR|
|RW series (wide electrode) | E24/E96 standard | ± 1%~5% | ± 100ppm/℃ | Adjust according to packaging | 0402~2512 | Excellent heat dissipation and resistance to mechanical stress|
|CR series (LED specific) | 10 Ω~10K Ω | ± 1%~5% | ± 100ppm/℃ | 1/8W~1/4W | 0805, 1206 | Flexible circuit adaptation, high temperature resistance|
3、 Application Market Analysis
Consumer Electronics
Core requirements: miniaturization, low power consumption, high-density design.
Adaptation series: CR series (LED lighting), UR series (power management), RS series (surge protection).
Typical applications: smartphone power module, smart home controller, wearable device sensor.
Automotive Electronics
Core requirements: high temperature resistance, vibration resistance, and high reliability.
Adaptation series: RW series (wide electrode heat dissipation), RS series (surge resistance), UR series (current detection).
Typical applications: car charger, BMS system, ECU control module.
Industrial automation
Core requirements: high power, corrosion resistance, and long lifespan.
Adaptation series: RS series (industrial power supply), RC series (high-voltage equipment), RW series (harsh environment).
Typical applications: frequency converters, PLC controllers, photovoltaic inverters.
Communication and medical equipment
Core requirements: high precision, low noise, and signal stability.
Adaptation series: UR series (precision testing), RC series (high-voltage insulation), CR series (signal conditioning).
Typical applications: 5G base station RF module, medical imaging equipment power supply.
4、 Future Trends and Competitive Strategies
Lizhi thick film resistors continue to consolidate their market position through miniaturized packaging (such as 0201 size), material innovation (low TCR alloy), and customized services (such as anti sulfurization and moisture-proof design). With the explosion of new energy vehicles, smart homes and other fields, the demand for low resistance, high-power series (UR, RW) will significantly increase. At the same time, stricter environmental regulations are driving the upgrade of lead-free processes, further aligning with global market trends.
Through technological iteration and market segmentation, Lizhi thick film resistors continue to lead in the high-performance and high reliability track, and are expected to explore new growth points in areas such as the Internet of Things and AI hardware in the future.