深圳市萬聯(lián)盛科技有限公司
專注于高品質(zhì)電阻器 - 豐富的生產(chǎn)研發(fā)管理團(tuán)隊
18617185077 彭生
0755-27606841
 |
1.Low temperature coefficient ,high precision ,and good high frequency performance .
低溫度系數(shù)、精度高、高頻性好。
2.Operating ambient temperature 使用環(huán)境溫度：-55°C ~+155°C
3.Film the metal in Vacuum ,the surface coating is resin with the good waterproof .
真空濺射金屬皮膜，涂層為環(huán)氧樹脂，防水性好。
4.Resistance tolerance 阻值誤差 : ±5%，±1%.
|
種類 Type |
定格電力 Rated power |
最高使用電壓 Maximum working voltage |
最高過負(fù)荷電壓 Maximum overload voltage |
絕緣耐電壓 Dielectric withstanding voltage |
阻值範(fàn)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 測試項目 |
Test Condition 測試條件 |
Performance 性能 |
| Temperature Coefficient 溫度系數(shù) |
The resistance value at normal temperature and normal temperature added 100°C, calculate per °C resistance value change rate. 在常溫及常溫+100°C時分別測量電阻值并計算每度的阻值變化。 |
10R以上：±100ppm/°C 10R以下：±300ppm/°C |
|
Short Time overload 短時間過負(fù)荷 |
2.5×rated voltage or Max. overload voltage(get the lower) for 5 seconds. 施加2.5倍額定電壓或最高負(fù)荷電壓（取較小者）5秒。 |
R≤±(0.5%R0+0.05Ω) |
|
Pulse overload 斷續(xù)過負(fù)荷 |
At 4×rated voltage or Max. pulse overload voltage(get the lower)cycle 10000±200times(1second on,25 seconds off). 4倍額定電壓或最高負(fù)荷斷續(xù)電壓（取較小者）測試1秒，停25秒，循環(huán)10000±200次。 |
R≤±(1%R0+0.05Ω) |
|
Resistance to soldering Heat 耐焊接熱 |
Immerge into the 350±10°C tin stove for 2~3seconds. 在350±10°C錫爐中浸入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錫爐中浸入2~3秒。 |
The soldering area is over 95% 焊錫面積覆蓋率達(dá)95%以上 |
| Temperature cycling 溫度循環(huán) |
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時放置30分鐘，然后在+25°C時放置10~15分鐘，然后再在+275°C時放置30分鐘，接著在+25°C時放置10~15分鐘，共循環(huán)5次。 |
R≤±(0.5%R0+0.05Ω) |
| Load life in humidity 耐濕負(fù)荷壽命 |
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. 在溫度為40±2°C，相對濕度為90~95%的恒溫恒濕箱中，施加額定電壓或最大工作電壓（取較小者）共1000小時（通電0.5小時，斷電0.5小時） |
R≤±(2%R0+0.05Ω) |
|
Load life in heat 耐濕負(fù)荷壽命 |
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. 在溫度為70±2°C的恒溫恒濕箱中，施加額定電壓或最大工作電壓（取較小者）共1000小時（通電0.5小時，斷電0.5小時） |
R≤±(2%R0+0.05Ω |
