High stability precision metal film molded resistor RESI MMFR6518B13K0V9 with low TCR and strong moisture resistance
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Product Description
MMFR Precision Metal Film Molded Resistor
The MMFR series is a precision metal film molded resistor designed for high-end manufacturing and precision instrumentation applications. It offers tight tolerance, low TCR, and high load life stability, making it ideal for electronic circuits with stringent TCR and stability requirements. The resistors utilize 75% alumina ceramic cores with precision metal film deposition technology, achieving target resistance through laser trimming. The leaded structure minimizes PCB stress impact, and the series boasts strong moisture resistance.
Product Attributes
- Brand: C&B Electronics
- Origin: Shenzhen, China
- Material: Precision Metal Film on 75% Alumina Ceramic Cores
- Website: www.resistor.today
- Email: resi@cbeureka.com
- Tel: 86-755-29392062
Technical Specifications
| Series | Size | Rated Power | Max. Operating Voltage | Operating Temperature | TCR | Resistance Tolerance | Max. Overload Voltage | Dimensions (L x D x d) | Packaging Quantity Per Bulk |
| MMFR3679 | 1/4W | 1.33W | 150V | -55~+150 | 50ppm/ | 0.1%, 0.2%, 0.5%, 1% | 250V | 3.60.5 x 1.70.1 x 1.70.1 | 1000pcs |
| MMFR4821 | 1/2W | 1.6W | 250V | -55~+150 | 50ppm/ | 0.1%, 0.2%, 0.5%, 1% | 400V | 4.80.5 x 1.70.1 x 1.70.1 | 1000pcs |
| MMFR6326 | 1W | 1.86W | 350V | -55~+150 | 50ppm/ | 0.1%, 0.2%, 0.5%, 1% | 500V | 6.30.5 x 1.90.1 x 1.90.1 | 1000pcs |
| MMFR7629 | 2W | 2.1W | 500V | -55~+150 | 50ppm/ | 0.1%, 0.2%, 0.5%, 1% | 700V | 7.60.5 x 2.10.1 x 2.10.1 | 1000pcs |
Performance Test Summary
| Performance Test | Test Method | Standard | Max. Change |
| Moisture Resistance | IEC 60115-1 4.7 | 553, 90-96% RH for 67 days, 1.2xRCWV or the maximum operating voltage (the lower one) | 0.1%+0.1 |
| Insulation Resistance | IEC 60115-1 5.7 | Apply a DC voltage of 500V between the electrode and the substrate for 60s | 10,000M |
| Load Life | IEC 60115-1 5.1.6 | 1053, 1000h, RCWV or maximum operating voltage (the lower one) | 0.1%+0.1 |
| TCR | IEC 60115-1 5.9 | +150, +25 Ref. | Within the nominal value range |
| Resistance to Solder Heat | IEC 60115-1 5.2.9 | +35010, 3.50.5s, immersed 1.6mm of the body | 0.1%+0.1 |
| Short-Time Overload | IEC 60115-1 5.2.4 | 2.5x RCWV or 3x maximum operating voltage (the lower one) for 5s | 0.1% No visible damage |
| Resistance to Solvent | IEC 60115-1 5.4.1 | Immerse in IPA for 2 min with ultrasonic | Clear marking No visible damage |
| Solderability | IEC 60115-1 5.2.8 | 1555, 50.5s | 95% coverage |
| Dielectric Withstanding Voltage | IEC 60115-1 4.7 | Apply a AC voltage with an effective maximum overload voltage between the electrode and the substrate at a speed of approximately 200V/s, for 60s | No breakdown or flashover |
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Company
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Location
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Contact Person
Sellina