e Resistors | What Are the Special Series of Tian Er Resistors?

Overview of Ever Ohms Technology's Special Resistors

Tian Er Technology (EVER OHMS)'s special resistors are not a single product, but a systematic product matrix tailored for specific applications such as high power, high precision, and high reliability. The core idea is to solve harsh working conditions that ordinary resistors cannot handle by optimizing materials, processes, or structures based on general resistors.

Product Number Decoding: Understanding Specifications from Models

Tian Er resistor models follow a structured coding rule, allowing engineers to quickly interpret their core parameters. For example, CRH2512F5R10E04Z:

• Series Code (CRH): Indicates the product series, such as CRH for high-power thick-film resistors.
• Package Size (2512): Represents the imperial package size, such as 2512 (6.35mm x 3.2mm).
• Accuracy Code (F): Indicates resistance accuracy, such as F = ±1%, J = ±5%.
• Resistance Value Code (5R10): Identifies the nominal resistance value, with R representing the decimal point, such as 5.10Ω.
• Internal Code (E04Z): Manufacturer internal code, usually related to rated power, temperature coefficient, and packaging method.

Details of Special Series: Features, Applications, and Advantages

Below is an analysis of the main special resistor series of Tian Er:

High-Power Thick-Film Resistor Series (CRH, CUH, CHH)

• Core Characteristics and Product Numbers: Achieve significantly higher power handling capability than conventional resistors within standard packages. CRH series can reach 2W in 2512 package; CUH series reaches up to 3W; CHH series can go as high as 4W.
• Product Applications and Advantages: Mainly used in power modules, industrial power supplies, servo drives, LED drivers, and other scenarios requiring high power density. The advantage lies in solving the heat dissipation problem of high power in limited space.

Precision Thin-Film Resistor Series (TR, TQ)

• Core Characteristics and Product Numbers: Use vacuum sputtering technology, offering extremely high precision. TR series has a typical accuracy of ±0.1% and a temperature coefficient as low as ±15ppm/℃; TQ series is automotive-grade, with accuracy ranging from ±0.05% to ±1%, and a temperature coefficient as low as ±10ppm/℃.
• Product Applications and Advantages: Used in medical instruments, precision measurement equipment, and automotive control modules where high precision and stability are required. Its low noise and high long-term stability ensure accurate measurement and control.

Alloy Current Sensing Resistor Series (MA, MR, MRE, MU)

• Core Characteristics and Product Numbers: Made of alloy materials, offering ultra-low resistance values (as low as 0.3mΩ) and low temperature coefficients (TCR). MA series can reach 7W power; MRE series focuses on miniaturization, with packages as small as 0201.
• Product Applications and Advantages: Widely applied in BMS, motor drives, fast charging modules, and other scenarios requiring high-precision current sensing. Its low resistance value and low temperature drift ensure high-precision current sampling.

Sulfur-Resistant Resistor Series (ST, STH)

• Core Characteristics and Product Numbers: Effectively resist corrosion from sulfur-containing gases (such as car exhaust and industrial waste gas) through special materials and processes. Tian Er Technology obtained relevant patents in 2011.
• Product Applications and Advantages: Applied in industrial control, sensors, and automotive electronics that may be exposed to sulfur environments. The core advantage is significantly improving the long-term operational stability and lifespan of resistors in harsh environments.

Surge-Resistant Thick-Film Resistor Series (ERSS, ERSM, ERSP)

• Core Characteristics and Product Numbers: Designed specifically to withstand transient current surges (Surge) in circuits. ERSS is the flagship series, capable of withstanding multiple high-current impacts.
• Product Applications and Advantages: Applied in industrial and automotive electronics, power management, and other scenarios with high reliability requirements. It effectively prevents resistor damage due to surge shocks, ensuring circuit safety.

High-Voltage Resistor Series (HV, HVR, HR)

• Core Characteristics and Product Numbers: Designed for high-voltage circuits, capable of withstanding hundreds to thousands of volts. For example, the maximum operating voltage of the HR series can reach 800V.
• Product Applications and Advantages: Applied in power modules, high-voltage test equipment, high-voltage dividers, and discharge circuits. The advantage lies in stable and safe operation under high-voltage conditions.

Automotive-Grade Resistor Series (QR, QRH, QRW)

• Core Characteristics and Product Numbers: Meet the AEC-Q200 automotive-grade standards. Certified by IATF 16949 and other automotive industry quality management systems.
• Product Applications and Advantages: Applied in BMS, motor controllers, ECU, and almost all automotive electronic systems. High reliability and stability are the cornerstone of automotive electronics.

Market Positioning and Brand Strength

Tian Er Technology (EVER OHMS) was established in 1988, headquartered in Kaohsiung, Taiwan. After more than three decades of development, it has grown from a single resistor manufacturer into a comprehensive supplier of passive components with a full range of products.

• Market Positioning: Tian Er's market positioning can be summarized as "high-cost-performance import substitution". Its strategy is to match the performance of Japanese premium brands while providing more competitive prices and flexible customization services, thereby establishing strong influence in the high-end resistor field.
• Core Competitiveness: Its core competitiveness lies in special specification resistors, which account for 70%~80% of the company's revenue. The company's products have successfully entered the power modules of AI servers and the supply chain of GB200/GB300, playing an important role in emerging fields such as new energy and automotive electronics. Tian Er is also one of the few manufacturers capable of providing a "one-stop resistor solution" from general-purpose to high-end precision.

Tian Er resistors, through clear product series division, precisely respond to the strict demands of different industrial fields. Its special resistors are not only a reflection of technical strength but also the key to standing out among numerous resistor brands.