Metal Film Molded Resistor RESI MMFR6518B1K50V9 with Precision Laser Trimming and Low Temperature Coefficient
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Product Description
MMFR Precision Metal Film Molded Resistor
The MMFR series offers a superior solution for high-end manufacturing with its precision metal film construction. Utilizing 99.6% alumina ceramic cores and advanced metal film deposition technology, these resistors achieve precise resistance values through laser trimming. They are designed for applications demanding tight tolerances, low TCR, and high load life stability, making them ideal for precision instrumentation.
Product Attributes
- Brand: C&B Electronics
- Origin: Shenzhen, China
- Material: Precision Metal Film, 99.6% Alumina Ceramic Cores
- Certifications: IEC 60115-1
Technical Specifications
| Series | Size | Rated Power | Max. Operating Voltage | Operating Temperature | TCR | Resistance Tolerance | Max. Overload Voltage |
| MMFR3679 | 1/4W | 1.36W | 161V | -55~+155 | 100ppm/ | 0.16%, 0.2%, 0.5%, 1% | 161V |
| MMFR4821 | 1/2W | 1.6W | 211V | -55~+155 | 100ppm/ | 0.16%, 0.2%, 0.5%, 1% | 211V |
| MMFR6326 | 1W | 1.86W | 311V | -55~+155 | 100ppm/ | 0.16%, 0.2%, 0.5%, 1% | 311V |
| MMFR7629 | 2W | 2.1W | 411V | -55~+155 | 100ppm/ | 0.16%, 0.2%, 0.5%, 1% | 411V |
Dimensions & Packaging
| Size | L (mm) | D (mm) | d (mm) | Quantity Per Bulk |
| MMFR3679 | 3.61.5 | 1.70.16 | 1.70.16 | 1000pcs |
| MMFR4821 | 4.81.5 | 1.70.16 | 1.70.16 | 1000pcs |
| MMFR6326 | 6.31.5 | 1.90.16 | 1.90.16 | 1000pcs |
| MMFR7629 | 7.61.5 | 2.90.16 | 2.90.16 | 1000pcs |
Performance Test
| Performance Test | Test Method | Standards | Max. Change |
| Moisture Resistance | IEC 60115-1 5.3.15 | 0.16%+0.16 | |
| Insulation Resistance | IEC 60115-1 5.7 | 21111M, minimum | |
| Load Life | IEC 60115-1 5.3.6 | 0.16%+0.16 | |
| TCR | IEC 60115-1 5.9 | Within the nominal value range | |
| Resistance to Solder Heat | IEC 60115-1 5.29 | 0.16%+0.16 | |
| Short-Time Overload | IEC 60115-1 5.24 | 0.13% | |
| Resistance to Solvent | IEC 60115-1 5.41 | Clear marking, No visible damage | |
| Solderability | IEC 60115-1 5.28 | 60% coverage | |
| Dielectric Withstanding Voltage | IEC 60115-1 4.7 | No breakdown or flashover |
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Company
Beijing Silk Road Enterprise Management Services Co., Ltd.
Location
16 Floor, Unit B, Jiatai International Mansion, No 41, Dongsihuan Zhong Road, Chaoyang District, Beijing
Contact Person
Sellina