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Specifications
Type:
Metal Film Resistor
Resistance:
680Ω
Voltage-Supply(Max):
250V
Power(Watts):
250mW
Temperature Coefficient:
±100ppm/℃
Tolerance:
±1%
Operating Temperature:
-55℃~+155℃
Mfr. Part #:
MF1/4W-680Ω±1% T
Package:
Through Hole,D2.3xL6.5mm
Key Attributes
Model Number:
MF1/4W-680Ω±1% T
Product Description
Metal Film Fixed Resistor
This specification covers Metal Film Fixed Resistors manufactured by CHIAN CHIA ELECTRONIC(HU BEI)CO.,LTD, complying with RoHS environmental substance requirements. These resistors are designed for various applications requiring precise resistance values and reliability.
Product Attributes
- Brand: CHIAN CHIA ELECTRONIC
- Origin: CHIAN CHIA ELECTRONIC(HU BEI)CO.,LTD
- Material: Metal film resistor element, Ceramic core, Tinned iron cap, Epoxy resin finishing paint
- Color: Sky blue (for both Normal and Small size types)
- Certifications: RoHS
Technical Specifications
| Type | Rated Power | Max. Working Voltage | Max. Overload Voltage | Dielectric Withstanding Voltage | Resistance Range () | Operating Temperature Range |
| MF1/8W (Normal) | 0.125W | 150V | 300V | 300V | 1 ~1M | -55+155 |
| MF1/4W (Normal) | 0.25W | 250V | 500V | 350V | 1 ~10M | -55+155 |
| MF1/2W (Normal) | 0.5W | 300V | 700V | 400V | 1 ~10M | -55+155 |
| MF1W (Normal) | 1W | 350V | 800V | 450V | 1 ~10M | -55+155 |
| MF2W (Normal) | 2W | 500V | 800V | 450V | 1 ~10M | -55+155 |
| MF3W (Normal) | 3W | 500V | 800V | 500V | 1 ~10M | -55+155 |
| MF5W (Normal) | 5W | 500V | 1000V | 500V | 1 ~10M | -55+155 |
| MF1/4WS (Small) | 0.25W | 150V | 300V | 300V | 1 ~10M | -55+155 |
| MF1/2WS (Small) | 0.5W | 250V | 700V | 350V | 1 ~10M | -55+155 |
| MF1WS (Small) | 1W | 300V | 800V | 400V | 1 ~10M | -55+155 |
| MF2WS (Small) | 2W | 350V | 800V | 450V | 1 ~10M | -55+155 |
| MF3WS (Small) | 3W | 500V | 1000V | 450V | 1 ~10M | -55+155 |
| MF5WS (Small) | 5W | 500V | 1000V | 500V | 1 ~10M | -55+155 |
| Item | Performance | Test Methods (JIS C 5202) |
| Temperature Coefficient | Within 100PPM/ | Comply with 5.2 |
| Short time overload | Within (0.5%+0.05). No evidence of mechanical damage. | Comply with 5.5 (Rated voltage2.5 times, 5s) |
| Insulation Resistance | 104M or more. | Comply with 5.6 (DC 500V for 60 seconds) |
| Dielectric Withstanding Voltage | No evidence of flashover, arcing or insulation breakdown. | Comply with 5.7 (AC potential respectively for 60 seconds) |
| Terminal strength | No evidence of mechanical damage. | Comply with 6.1 (Tensile and Torsion strength tests) |
| Resistance to soldering heat | Within (0.5%+0.05). No evidence of mechanical damage. | Comply with 6.4 (35010, 31.0s) |
| Solderability | Covered with new solder by 95% at least. | Comply with 6.5 (Solder temp: 2555, Dipping time: 31.0s) |
| Resistance to solvent | No deterioration of protective coating and markings. | Comply with 6.9 (Ultrasonic bath in alcohol solvent for 3 minutes) |
| Temperature cycle | Within (1%+0.05). No evidence of mechanical damage. | Comply with 7.4 (5 cycles of -55 to +80) |
| Load life in humidity | Within (2%+0.05). | Comply with 7.9 (402, 90-95%RH, 1000h) |
| Load life | Within (2%+0.05). | Comply with 7.10 (703, 1000h) |
| Color | 1st Figure | 2nd Figure | 3rd Figure | Multiplier | Tolerance |
| Black | 0 | 0 | 0 | 100 | |
| Brown | 1 | 1 | 1 | 101 | 1% (F) |
| Red | 2 | 2 | 2 | 102 | 2% (G) |
| Orange | 3 | 3 | 3 | 103 | |
| Yellow | 4 | 4 | 4 | 104 | |
| Green | 5 | 5 | 5 | 105 | |
| Blue | 6 | 6 | 6 | 106 | |
| Violet | 7 | 7 | 7 | 107 | 0.1% (B) |
| Gray | 8 | 8 | 8 | 108 | 0.05% (A) |
| White | 9 | 9 | 9 | 109 | |
| Gold | 10-1 | 5% (J) | |||
| Silver | 10-2 |
| Type | I 2.0 | L 1.0 | D | d 0.05 | H 2.0 |
| MF1/8W / MF1/4WS | 60 | 3.2 | 1.80.5 | 0.40 | 27 |
| MF1/4W / MF1/2WS | 60 | 6.5 | 2.30.5 | 0.43 | 26 |
| MF1/2W / MF1WS | 60 | 9.0 | 3.20.5 | 0.50 | 26 |
| MF1W / MF2WS | 60 | 11.5 | 4.51.0 | 0.68 | 25 |
| MF2W | 73 | 11.5 | 4.51.0 | 0.68 | 31 |
| MF3W / MF3WS | 60 | 15.5 | 5.01.0 | 0.68 | 23 |
| MF3W / MF3WS | 81 | 15.5 | 5.01.0 | 0.68 | 33 |
| MF5W / MF5WS | 94 | 17.5 | 6.01.0 | 0.68 | 38 |
| MF5W | 94 | 24.5 | 8.01.0 | 0.68 | 35 |
2410121228_CCO-Chian-Chia-Elec-MF1-4W-680R-1--T_C119320.pdf
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