Product Overview
UNI-ROYAL's MF Series Precision Metal Film Fixed Resistors are designed for applications requiring high precision and stability. These resistors feature a vacuum-deposited metal film on a Nichrome resistive element, offering superior moisture protection and stable performance in various environments. They are compliant with RoHS directives and halogen-free requirements, making them suitable for a wide range of electronic applications.
Product Attributes
- Brand: UNI-ROYAL
- Origin: China
- Material: Nichrome resistive element, Metal Film
- Certifications: RoHS compliant, Halogen free
Technical Specifications
| Type | Wattage | Tolerance | Resistance Range | TCR (PPM/) | Max Working Voltage (V) | Max Overload Voltage (V) | Dielectric Withstanding Voltage (V) |
|---|---|---|---|---|---|---|---|
| MF 1/8W | 1/8W | 1% | 10~1M | 50 | 200 | 400 | 200 |
| MF 1/8W | 1/8W | 2% | 10~1M | 100 | 200 | 400 | 200 |
| MF 1/8W | 1/8W | 5% | 1~1M | 200 | 200 | 400 | 200 |
| MF 1/4WS | 1/4W-S | 1% | 10~1M | 50 | 200 | 400 | 200 |
| MF 1/4WS | 1/4W-S | 2% | 10~1M | 100 | 200 | 400 | 200 |
| MF 1/4WS | 1/4W-S | 5% | 1~1M | 200 | 200 | 400 | 200 |
| MF 0.4WSS | 0.4W-SS | 1% | 10~1M | 50 | 200 | 400 | 200 |
| MF 0.4WSS | 0.4W-SS | 2% | 10~1M | 100 | 200 | 400 | 200 |
| MF 0.4WSS | 0.4W-SS | 5% | 1~1M | 200 | 200 | 400 | 200 |
| MF 1/4W | 1/4W | 1% | 10~1M | 50 | 250 | 500 | 250 |
| MF 1/4W | 1/4W | 2% | 1~1M | 100 | 250 | 500 | 250 |
| MF 1/4W | 1/4W | 5% | 1~1M | 200 | 250 | 500 | 250 |
| MF 1/2WS | 1/2W-S | 1% | 10~1M | 50 | 250 | 500 | 250 |
| MF 1/2WS | 1/2W-S | 2% | 1~1M | 100 | 250 | 500 | 250 |
| MF 1/2WS | 1/2W-S | 5% | 1~1M | 200 | 250 | 500 | 250 |
| MF 0.6WS | 0.6W-S | 1% | 10~1M | 50 | 250 | 500 | 250 |
| MF 0.6WS | 0.6W-S | 2% | 1~1M | 100 | 250 | 500 | 250 |
| MF 0.6WS | 0.6W-S | 5% | 1~1M | 200 | 250 | 500 | 250 |
| MF 1/2W | 1/2W | 1% | 10~1M | 50 | 350 | 700 | 250 |
| MF 1/2W | 1/2W | 2% | 10~1M | 100 | 350 | 700 | 250 |
| MF 1/2W | 1/2W | 5% | 1~1M | 200 | 350 | 700 | 250 |
| MF 1WS | 1W-S | 1% | 10~1M | 50 | 350 | 700 | 250 |
| MF 1WS | 1W-S | 2% | 10~1M | 100 | 350 | 700 | 250 |
| MF 1WS | 1W-S | 5% | 1~1M | 200 | 350 | 700 | 250 |
| MF 1W | 1W | 1% | 51.1~1M | 50 | 500 | 1000 | 350 |
| MF 1W | 1W | 2% | 51.1~1M | 100 | 500 | 1000 | 350 |
| MF 1W | 1W | 5% | 1~1M | 200 | 500 | 1000 | 350 |
| MF 2WS | 2W-S | 1% | 51.1~1M | 50 | 500 | 1000 | 350 |
| MF 2WS | 2W-S | 2% | 51.1~1M | 100 | 500 | 1000 | 350 |
| MF 2WS | 2W-S | 5% | 51.1~1M | 200 | 500 | 1000 | 350 |
| MF 2W | 2W | 1% | 51.1~1M | 50 | 500 | 1000 | 350 |
| MF 2W | 2W | 2% | 51.1~1M | 100 | 500 | 1000 | 350 |
| MF 2W | 2W | 5% | 1~1M | 200 | 500 | 1000 | 350 |
| MF 3WS | 3W-S | 1% | 51.1~1M | 50 | 500 | 1000 | 350 |
| MF 3WS | 3W-S | 2% | 51.1~1M | 100 | 500 | 1000 | 350 |
| MF 3WS | 3W-S | 5% | 51.1~1M | 200 | 500 | 1000 | 350 |
| MF 3W | 3W | 1% | 51.1~1M | 50 | 500 | 1000 | 500 |
| MF 3W | 3W | 2% | 51.1~1M | 100 | 500 | 1000 | 500 |
| MF 3W | 3W | 5% | 1~1M | 200 | 500 | 1000 | 500 |
Performance Specification
| Characteristic | Limits | Test Method |
|---|---|---|
| Temperature Coefficient | Natural resistance changes per temp. Degree centigrade R2-R1 106 / R1(t2-t1) (PPM/) | Reference 6.0 |
| Short-time overload | R/R (0.5%+0.05 ),with no evidence of mechanical damage | 4.13 |
| Dielectric withstanding voltage | No evidence of flashover mechanical damage, arcing or insulation break down. | 4.7 |
| Pulse overload | R/R (1%+0.05),with no evidence of mechanical damage | 4.28 |
| Resistance to soldering heat | R/R (1%+0.05 ) with no evidence of mechanical damage | 4.18 |
| Resistance to solvent | No deterioration of protective coatings & markings | 4.29 |
2508141745_UNI-ROYAL-MF006FF4701A50_C18724308.pdf
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