深圳市万联盛科技有限公司
专注于高品质电阻器 - 丰富的生产研发管理团队
18617185077 彭生
0755-27606841
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1.Low temperature coefficient ,high precision ,and good high frequency performance .
低温度系数、精度高、高频性好。
2.Operating ambient temperature 使用环境温度：-55°C ~+155°C
3.Film the metal in Vacuum ,the surface coating is resin with the good waterproof .
真空溅射金属皮膜，涂层为环氧树脂，防水性好。
4.Resistance tolerance 阻值误差 : ±5%，±1%.
|
種類 Type |
定格電力 Rated power |
最高使用電壓 Maximum working voltage |
最高過負荷電壓 Maximum overload voltage |
絕緣耐電壓 Dielectric withstanding voltage |
阻值範圍(Ω) Resistance Range(Ω) |
| MF1/8W | 0.125W | 150V | 300V | 300V | 1Ω~1MΩ |
| MF1/4W | 0.25W | 250V | 500V | 350V | 1Ω~10MΩ |
| MF1/2W | 0.5W | 300V | 700V | 400V | 1Ω~10MΩ |
| MF1W | 1W | 350V | 800V | 450V | 1Ω~10MΩ |
| MF2W | 2W | 500V | 800V | 450V | 1Ω~10MΩ |
| MF3W | 3W | 500V | 800V | 500V | 1Ω~10MΩ |
| MF5W | 5W | 500V | 1000V | 500V | 1Ω~10MΩ |
| 種 類 Type | 尺 寸 Dimensions | |||
| L | ψD | ψd±0.05 | l±2.0 | |
| MF1/8W | 3.2±1.0 | 1.8±0.5 | 0.40 | 29 |
| MF1/4W | 6.5±1.0 | 2.3±0.5 | 0.41 | 27 |
| MF1/2W | 9.0±1.0 | 3.2±0.5 | 0.50 | 26 |
| MF1W | 11.5±1.0 | 4.5±1.0 | 0.60 | 25 |
| 11.5±1.0 | 4.5±1.0 | 0.60 | 30 | |
| MF2W | 15.5±1.0 | 5.0±1.0 | 0.60 | 23 |
| 15.5±1.0 | 5.0±1.0 | 0.60 | 33 | |
| MF3W | 17.5±1.5 | 6.0±1.0 | 0.65 | 32 |
| 17.5±1.5 | 6.0±1.0 | 0.65 | 38 | |
| MF5W | 24.5±1.5 | 8.0±1.0 | 0.70 | 35 |
|
Test Item 测试项目 |
Test Condition 测试条件 |
Performance 性能 |
| Temperature Coefficient 温度系数 |
The resistance value at normal temperature and normal temperature added 100°C, calculate per °C resistance value change rate. 在常温及常温+100°C时分别测量电阻值并计算每度的阻值变化。 |
10R以上：±100ppm/°C 10R以下：±300ppm/°C |
|
Short Time overload 短时间过负荷 |
2.5×rated voltage or Max. overload voltage(get the lower) for 5 seconds. 施加2.5倍额定电压或最高负荷电压（取较小者）5秒。 |
R≤±(0.5%R0+0.05Ω) |
|
Pulse overload 断续过负荷 |
At 4×rated voltage or Max. pulse overload voltage(get the lower)cycle 10000±200times(1second on,25 seconds off). 4倍额定电压或最高负荷断续电压（取较小者）测试1秒，停25秒，循环10000±200次。 |
R≤±(1%R0+0.05Ω) |
|
Resistance to soldering Heat 耐焊接热 |
Immerge into the 350±10°C tin stove for 2~3seconds. 在350±10°C锡炉中浸入2~3秒。 |
R≤±(0.5%R0+0.05Ω) |
|
Solderability 可焊性 |
Immerge into the 245±3°C tin stove for 2~3seconds. 在260±5°C锡炉中浸入2~3秒。 |
The soldering area is over 95% 焊锡面积覆盖率达95%以上 |
| Temperature cycling 温度循环 |
At -55°C for 30 min. ,then at+25°C for 10~15°C,then at +125°C for 30 min., then at +25°C for 10~15 min., total 5cycles. 在-55°C时放置30分钟，然后在+25°C时放置10~15分钟，然后再在+275°C时放置30分钟，接着在+25°C时放置10~15分钟，共循环5次。 |
R≤±(0.5%R0+0.05Ω) |
| Load life in humidity 耐湿负荷寿命 |
Overload rated voltage or Max. working voltage(get the lower) for 1000 hours(1.5hours on and 0.5 hours off) at the 40±2°C and 90~95% relative humidity. 在温度为40±2°C，相对湿度为90~95%的恒温恒湿箱中，施加额定电压或最大工作电压（取较小者）共1000小时（通电0.5小时，断电0.5小时） |
R≤±(2%R0+0.05Ω) |
|
Load life in heat 耐湿负荷寿命 |
Overload rated voltage or Max. working voltage(get the lower) for 1000 hours(1.5hours on and 0.5 hours off) at the 70±2°C. 在温度为70±2°C的恒温恒湿箱中，施加额定电压或最大工作电压（取较小者）共1000小时（通电0.5小时，断电0.5小时） |
R≤±(2%R0+0.05Ω |
