Lead Free Fixed Resistors UNI ROYAL MFR0W4F2402A50 Metal Film Type for Electronic Circuit Performance
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Product Description
UNIROYAL ELECTRONICS INDUSTRY CO., LTD. - LEAD-FREE METAL FILM FIXED RESISTORS (MFR SERIES)
This document specifies the Lead-Free Metal Film Fixed Resistors manufactured by UNIOHM, designed for various electronic applications requiring precise resistance values and high reliability. The MFR series offers a wide range of power ratings, tolerances, and resistance values.
Product Attributes
- Brand: UNIROYAL ELECTRONICS INDUSTRY CO., LTD. (UNIOHM)
- Product Name: LEAD-FREE METAL FILM FIXED RESISTORS
- Part Name: MFR SERIES
- Origin: CHINA
- Material: Metal Film (Resistance layer), Ceramic (Body), Cold steel plated with copper/tin (End cap), Tin solder coated copper wire (Lead wire)
- Coating: Inflammable/Non-inflammable resin (Blue/Light Green/Deep Green)
- Marking: Color bands in accordance with JIS C 0802
- Certifications: Lead-Free
Technical Specifications
| Type | Power Rating | Dimensions (mm) D x L | Lead Diameter (mm) d0.05 | Body Length (mm) H3 | Max. Working Voltage (V) | Max. Overload Voltage (V) | Dielectric Withstanding Voltage (V) | Tolerance | Resistance Range |
| MF 1/8W | 1/8W | 1.90.3 x 3.30.3 | 0.45 | 28 | 200 | 400 | 400 | 1%, 2% | 10~1M |
| MF 1/8W | 1/8W | 1.90.3 x 3.30.3 | 0.45 | 28 | 200 | 400 | 400 | 5% | 1~1M |
| MF 1/4W | 1/4W | 2.20.3 x 6.51.0 | 0.54 | 28 | 250 | 500 | 500 | 1%, 2% | 10~1M |
| MF 1/4W | 1/4W | 2.20.3 x 6.51.0 | 0.54 | 28 | 250 | 500 | 500 | 5% | 1~1M |
| MF 1/2W | 1/2W | 3.00.6 x 9.51.0 | 0.54 | 28 | 350 | 700 | 700 | 1%, 2% | 10~1M |
| MF 1/2W | 1/2W | 3.00.6 x 9.51.0 | 0.54 | 28 | 350 | 700 | 700 | 5% | 1~1M |
| MF 1W | 1W | 4.50.6 x 11.51.0 | 0.65 | 28 | 500 | 1000 | 1000 | 1%, 2% | 51.1~1M |
| MF 1W | 1W | 4.50.6 x 11.51.0 | 0.65 | 28 | 500 | 1000 | 1000 | 5% | 1~1M |
| MF 2W | 2W | 5.00.6 x 15.51.0 | 0.70 | 28 | 500 | 1000 | 1000 | 1%, 2% | 51.1~1M |
| MF 2W | 2W | 5.00.6 x 15.51.0 | 0.70 | 28 | 500 | 1000 | 1000 | 5% | 1~1M |
| MF 3W | 3W | 6.00.6 x 17.51.0 | 0.75 | 28 | 500 | 1000 | 1000 | 1%, 2% | 51.1~1M |
| MF 3W | 3W | 6.00.6 x 17.51.0 | 0.75 | 28 | 500 | 1000 | 1000 | 5% | 1~1M |
| MF 1/4WS | 1/4W | 1.90.5 x 3.30.3 | 0.45 | 28 | 200 | 400 | 200 | 1%, 2% | 10~1M |
| MF 1/4WS | 1/4W | 1.90.5 x 3.30.3 | 0.45 | 28 | 200 | 400 | 200 | 5% | 1~1M |
| MF 0.4WSS | 0.4W | 1.90.5 x 3.30.3 | 0.45 | 28 | 200 | 400 | 200 | 1%, 2% | 10~1M |
| MF 0.4WSS | 0.4W | 1.90.5 x 3.30.3 | 0.45 | 28 | 200 | 400 | 200 | 5% | 1~1M |
| MF 1/2WSS | 1/2W | 2.20.5 x 6.50.5 | 0.54 | 28 | 250 | 500 | 250 | 1% | 10~1M |
| MF 1/2WSS | 1/2W | 2.20.5 x 6.50.5 | 0.54 | 28 | 250 | 500 | 250 | 2%, 5% | 1~1M |
| MF 1/2WS | 1/2W | 2.70.5 x 9.01.0 | 0.54 | 28 | 350 | 700 | 700 | 1%, 2% | 10~1M |
| MF 1/2WS | 1/2W | 2.70.5 x 9.01.0 | 0.54 | 28 | 350 | 700 | 700 | 5% | 1~1M |
| MF 0.6WS | 0.6W | 2.20.5 x 6.51.0 | 0.54 | 28 | 250 | 500 | 250 | 1% | 10~1M |
| MF 0.6WS | 0.6W | 2.20.5 x 6.51.0 | 0.54 | 28 | 250 | 500 | 250 | 2%, 5% | 1~1M |
| MF 1WS | 1W | 3.50.6 x 9.51.0 | 0.60 | 28 | 350 | 700 | 350 | 1%, 2%, 5% | 10~1M |
| MF 2WS | 2W | 4.00.6 x 11.51.0 | 0.65 | 28 | 500 | 1000 | 350 | 1%, 2%, 5% | 10~1M |
| MF 3WS | 3W | 5.00.6 x 15.51.0 | 0.70 | 28 | 500 | 1000 | 350 | 1%, 2%, 5% | 10~1M |
Specifications Summary
| Item | Limits | Test Method |
| Temperature Coefficient | 0.1% (15 PPM/Max.) 0.25% (25 PPM/Max.) 0.5% (50PPM/Max.) 1% (50PPM/Max.) 2% (100PPM/Max.) 5% (200PPM/Max.) | JIS-C-5201&5202 |
| Short-time overload | Resistance change rate is: (0.5%+0.05)Max. | 4.13 |
| Dielectric withstanding voltage | No evidence of flashover mechanical damage, arcing or insulation break down. | 4.7 |
| Pulse overload | Resistance change rate is: (1%+0.05) Max. | 4.28 |
| Resistance to soldering heat | Resistance change rate is: (1%+0.05) Max. | 4.18 |
| Resistance to solvent | No deterioration of protective coatings & markings | 4.29 |
| Terminal strength | No evidence of mechanical damage | 4.16 |
| Solderability | 95% coverage Min. | 4.17 |
| Temperature cycling | Resistance change rate is: (1%+0.05) Max. | 4.19 |
| Load life in humidity | Normal type: 1.5%; flame retardant type: 5% | 7.9 |
| Load life | Normal type: 1.5%; flame retardant type: 5% | 4.25.1 |
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Contact Person
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