TMRM03-High Precision Metal Film Resistor Mold Type
Structure and Manufacturing
- Material Selection: High-stability special alloys, such as nickel-chromium alloys, are typically used as the resistive material. These alloys exhibit excellent heat resistance and stability. The ceramic rods are generally made of ceramics with a high alumina content, which possess high thermal conductivity to enhance heat dissipation capabilities.
- Manufacturing Process: A uniform metal alloy film is formed on the ceramic rod using vacuum deposition technology. Subsequently, precision processing methods like laser etching are employed to create spiral grooves on the film, allowing for precise control of the resistance value and achieving high-precision resistance regulation.
Performance Characteristics
- High Precision: The precision can reach up to ±0.01% or even higher. For instance, the UPR series mold-type ultra-high precision metal film resistors from Thunder Precision Resistor Co., Ltd. boast a precision of ±0.01%.
- Low Temperature Coefficient: The temperature coefficient is usually lower than ±5ppm/ºC, and in some cases, it can even reach ±1ppm/ºC. This means that the resistance value changes very little under different temperature environments.
- Excellent Voltage Stability: It demonstrates minimal resistance drift even when subjected to long-term voltage application, ensuring stable performance in various circuit operating conditions.
- High Reliability: The mold-type packaging provides robust protection, enhancing the resistor's resistance to mechanical stress, moisture, and chemical corrosion, thus extending its service life in harsh environments.
Feature:
High stability
High frequency performance
Low TCR
Excellent high precision of ±0.01%~±0.25%
Appliacation: Entertainment system, Testing and measuring equipment, Meter/Instruments system
Part number:
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| Produce Code TMRM03: High Precision Metal Film Resistor Mold Type |
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Resistance Value Code: Four digits: The first three digits are Significant figures and the fourth one denotes number of zeros.1201=1.2K Ω |
Tolerance T=±0.01% Q=±0.02% A=±0.05% B=±0.1% C=± 0.25% |
Rated Power: One digits: 1= 1W 2= 1/2W 3=3/4W 4= 1/4W 8= 1/8W |
Packaging T:tape&reel B:bulk |
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