I. 特点
- 金属板无感电阻器,又称MPR(美洲),BPR(日本),SLR(欧洲).该电阻元件采用精密合金材料,经特殊工艺制成片状电阻芯,通过高频片式陶瓷壳进行封装而成
- 低电感,低阻值(5m ohm 到 6.6 ohm),耐热性优,温度系数小,低杂音,负荷功率大,绝缘性高,不燃性
- 广泛应用于电视机,显示器,计算机周边设备,自动化控制系统,变频空调,电源设备,高档音响等电路中
II. 尺寸结构图

|
类型 |
尺寸(mm)
|
阻值范围
|
功率
|
A±1.0
|
B±1.0
|
C±0.5
|
H±1.0
|
h1±1.0
|
h2±1.0
|
P±1.0
|
E12 ±5%(J)
|
E12 ±10%(K)
|
MPR 26F |
2W |
8.5
|
13.0
|
5.0
|
13.0
|
8.0
|
4.0
|
10
|
0.005Ω~0.68Ω
|
0.005Ω~0.68Ω
|
MPR 36F |
3W |
13.0
|
14.0
|
5.0
|
13.0
|
8.0
|
4.0
|
10
|
0.005Ω~0.68Ω
|
0.005Ω~0.68Ω
|
MPR 56F |
5W |
18.0
|
14.0
|
5.0
|
13.0
|
8.0
|
4.0
|
10
|
0.005Ω~1.0Ω
|
10.005Ω~1.0Ω
|
MPR 28F |
2W |
8.5
|
26
|
5.0
|
13.0
|
8.0
|
4.0
|
20
|
0.005Ω~1.0Ω
|
0.005Ω~1.0Ω
|
MPR 38F |
3W |
13.0
|
26
|
5.0
|
13.0
|
8.0
|
4.0
|
20
|
0.01Ω~6.6Ω
|
0.01Ω~6.6Ω
|
MPR 58F |
5W |
18.0
|
26
|
5.0
|
13.0
|
8.0
|
4.0
|
20
|
0.01Ω~6.6Ω
|
0.01Ω~6.6Ω
|
MPR 108F |
10W |
17.0
|
26
|
5.0
|
13.0
|
8.0
|
4.0
|
20
|
0.01Ω~6.6Ω
|
0.01Ω~6.6Ω
|
MPR 22F |
2W+2W |
8.5
|
26
|
5.0
|
13.0
|
8.0
|
4.0
|
10
|
0.01Ω~6.6Ω
|
0.01Ω~6.6Ω
|
MPR 33F |
3W+3W |
13.0
|
26
|
5.0
|
13.0
|
8.0
|
4.0
|
10
|
0.01Ω~6.6Ω
|
0.01Ω~6.6Ω
|
MPR 55F |
5W+5W |
17.0
|
26
|
5.0
|
13.0
|
8.0
|
4.0
|
10
|
0.01Ω~6.6Ω
|
0.01Ω~6.6Ω
|
MPR 77F |
7W+7W |
20.0
|
26
|
5.0
|
13.0
|
8.0
|
4.0
|
10
|
0.01Ω~6.6Ω
|
0.01Ω~6.6Ω
| | |
III.降负荷曲线图和表面温升曲线图


|
IV. 标准阻值一览表
|
功率
|
阻 值 |
MPR 26F |
MPR 36F |
MPR 56F |
MPR 28F |
MPR 38F |
MPR 58F |
MPR 108F |
MPR 22F |
MPR 33F |
MPR 55F |
MPR 77F |
0.007 ohm |
* |
* |
* |
* |
* |
* |
* |
* |
* |
* |
* |
0.0075 ohm |
* |
* |
* |
* |
* |
* |
* |
* |
* |
* |
* |
0.008 ohm |
* |
* |
* |
* |
* |
* |
* |
* |
* |
* |
* |
0.01 ohm |
* |
* |
* |
* |
* |
* |
* |
* |
* |
* |
* |
0.011 ohm |
* |
* |
* |
* |
* |
* |
* |
* |
* |
* |
* |
0.012 ohm |
* |
* |
* |
* |
* |
* |
* |
* |
* |
* |
* |
0.015 ohm |
* |
* |
* |
* |
* |
* |
* |
* |
* |
* |
* |
0.02 ohm |
* |
* |
* |
* |
* |
* |
* |
* |
* |
* |
* |
0.022 ohm |
* |
* |
* |
* |
* |
* |
* |
* |
* |
* |
* |
0.025 ohm |
* |
* |
* |
* |
* |
* |
* |
* |
* |
* |
* |
0.03 ohm |
* |
* |
* |
* |
* |
* |
* |
* |
* |
* |
* |
0.033 ohm |
* |
* |
* |
* |
* |
* |
* |
* |
* |
* |
* |
0.039 ohm |
* |
* |
* |
* |
* |
* |
* |
* |
* |
* |
* |
0.047 ohm |
* |
* |
* |
* |
* |
* |
* |
* |
* |
* |
* |
0.050 ohm |
* |
* |
* |
* |
* |
* |
* |
* |
* |
* |
* |
0.068 ohm |
* |
* |
* |
* |
* |
* |
* |
* |
* |
* |
* |
0.070 ohm |
* |
* |
* |
* |
* |
* |
* |
* |
* |
* |
* |
0.082 ohm |
* |
* |
* |
* |
* |
* |
* |
* |
* |
* |
* |
0.0100 ohm |
* |
* |
* |
* |
* |
* |
* |
* |
* |
* |
* |
0.1200 ohm |
* |
* |
* |
* |
* |
* |
* |
* |
* |
* |
* |
0.0150 ohm |
* |
* |
* |
* |
* |
* |
* |
* |
* |
* |
* |
0.2000 ohm |
* |
* |
* |
* |
* |
* |
* |
* |
* |
* |
* |
0.2200 ohm |
* |
* |
* |
* |
* |
* |
* |
* |
* |
* |
* |
0.2500 ohm |
* |
* |
* |
* |
* |
* |
* |
* |
* |
* |
* |
0.2700 ohm |
* |
* |
* |
* |
* |
* |
* |
* |
* |
* |
* |
0.3000 ohm |
* |
* |
* |
* |
* |
* |
* |
* |
* |
* |
* |
0.3300 ohm |
* |
* |
* |
* |
* |
* |
* |
* |
* |
* |
* |
0.3900 ohm |
* |
* |
* |
* |
* |
* |
* |
* |
* |
* |
* |
0.4700 ohm |
* |
* |
* |
* |
* |
* |
* |
* |
* |
* |
* |
0.5600 ohm |
* |
* |
* |
* |
* |
* |
* |
* |
* |
* |
* |
0.6200 ohm |
* |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0.6800 ohm |
|
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0.8200 ohm |
|
|
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0.910 ohm |
|
|
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
1.000 ohm |
|
|
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
1.200 ohm |
|
|
|
0 |
* |
* |
* |
0 |
0 |
0 |
0 |
1.800 ohm |
|
|
|
0 |
* |
* |
* |
0 |
0 |
0 |
0 |
2.200 ohm |
|
|
|
|
* |
* |
* |
0 |
0 |
0 |
0 |
3.300 ohm |
|
|
|
|
* |
* |
* |
0 |
0 |
0 |
0 |
6.600 ohm |
|
|
|
|
|
0 |
0 |
0 |
0 |
0 |
0 |
备注: |
"*" 表示可供货
|
"0" 表示正在开发中,尚未供货 | | |
V. 电气特性
项目
|
性能要求
|
测试方法
|
温度系数
|
± 250ppm/℃
|
JIS5202-5.2 -55℃ 到 +155℃ T.C.R=(R2-R1)×10?6;/ R1 (T2-T1)(PPM/℃) R1:常温(T1)阻抗值; R2:常温+100℃(T2)阻抗值
|
短时间过负荷 |
ΔR≤±(2% R0+0.05Ω)
|
JIS5202-5.5 1W-3W: 5倍额定电压 5 秒 5W-20W:10倍额定电压 5 秒
|
耐电压
|
封装不可烧损,绝缘不可破坏
|
JIS5202-5.5 电阻两端导线 置于金属V型槽上依500V之电压规定加压60秒
|
直流阻抗值 |
J±5%,K±10%
|
室温 25℃ 测试点
|
绝缘阻抗值 |
1000MΩ M |
以DC 500V测试体于V型槽上之导线及其表面涂装印加60秒 |
热冲击 |
ΔR≤±(2% R0+0.05Ω) |
JIS5202-6.7 依下所规定之温度连续5次 步骤: 1.温度-55℃ 放置30秒 2.温度25℃ 放置5秒 3.温度85℃ 放置30秒 4.温度25℃ 放置5秒
|
耐湿寿命
|
ΔR≤±(3% R0+0.05Ω)
|
JIS5202-7.9 40±2°C, 90~95% RH 于恒湿箱中加额定直流电压测试1.5小时,停止0.5小时连续测试1000小时
|
耐温寿命
|
ΔR≤±(3% R0+0.1Ω)
|
JIS5202-7.10 70°C,于恒温箱中加额定电压测试1.5小时,停止0.5小时连续测试1000小时 | | | | |