. 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 |
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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 |
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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 |
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