Molded metal film resistor RESI MMFR2568B100RV9 with 0.25 watt power and 250 volt maximum working voltage
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Product Description
MMFR Precision Molded Metal Film Resistors
The MMFR series of precision molded metal film resistors offers high precision, low temperature coefficient, and excellent load life stability. Utilizing 96% alumina magnetic rods and precision metal film deposition technology with laser trimming, these resistors achieve target resistance values. They are ideal for electronic circuits requiring high accuracy in temperature coefficient and resistance stability, featuring a robust construction that minimizes PCB stress. Suitable for precision instruments and meters.
Product Attributes
- Brand: RESI (implied by markings)
- Origin: Shenzhen Kebu Electronics Co., Ltd.
- Material: 96% Alumina Magnetic Rod (core)
Technical Specifications
| Series | Size | Power (+70) | Resistance Range | Temperature Coefficient | Tolerance | Max. Working Voltage | Max. Overload Voltage | Operating Temperature Range | Dimensions (L x D) | Lead Diameter (d) | Packaging |
|---|---|---|---|---|---|---|---|---|---|---|---|
| MMFR2568 | 2568 | 0.25W | 10-1M | 5ppm/ | 0.05%, 0.1%, 0.5%, 1.0% | 250V | 500V | -50~+125 | 2.50.4 x 6.80.4 mm | 0.60.05 mm | 200pcs/bag |
| MMFR3710 | 3710 | 0.5W | 10-1M | 5ppm/ | 0.05%, 0.1%, 0.5%, 1.0% | 300V | 600V | -50~+125 | 3.70.4 x 10.00.4 mm | 0.60.05 mm | 100pcs/bag |
| MMFR5215 | 5215 | 0.75W | 10-1M | 5ppm/ | 0.05%, 0.1%, 0.5%, 1.0% | 350V | 700V | -50~+125 | 5.20.4 x 14.80.4 mm | 0.80.05 mm | 100pcs/bag |
| MMFR6518 | 6518 | 1.0W | 10-1M | 5ppm/ | 0.05%, 0.1%, 0.5%, 1.0% | 400V | 800V | -50~+125 | 6.50.4 x 18.30.4 mm | 0.80.05 mm | 100pcs/bag |
Performance Indicators
| Test Item | Test Method | Standard | Max. Value |
|---|---|---|---|
| Load Life | 702, 1000h, rated power or max. working voltage (min. of) | IEC 60115-1, 4.24 | 0.05% |
| Temperature Coefficient | Measurement point +85, reference point +25 | IEC 600115-1 4.7 | 5ppm/ |
| Soldering Heat Resistance | +2603, 101s, immersion 30.5mm | IEC 600115-1 4.6 | 0.05%+0.05 |
| Short-time Overload | 10x rated voltage or 2x max. working voltage (min. of), 5s | IEC 60115-1 4.25 | Within specified value |
| Solvent Resistance | Immersion in IPA for 5 minutes, with ultrasonic | IEC 60115-1 4.8 | 0.05%+0.05 |
| Solderability | 2355, 30.5s | IEC 60115-1 4.18 | 95% coverage, no visible damage |
| Damp Heat | 402, 90-95% RH, 56 days, 0.1x rated voltage or max. working voltage (min. of) | IEC60115-1 4.13 | 0.05%+0.05 |
| Dielectric Strength | AC voltage of max. overload voltage applied at approx. 100V/s between terminals, held for 60s | IEC 60115-1 4.30 | No breakdown or arcing |
| Insulation Resistance | 100V DC applied between terminals, held for 60s, then measure insulation resistance | IEC 60115-1 4.17 | 10000M min. |
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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