■ 外型尺寸 | 型号 | 250℃下额定功率(W)带散热板 | 外形尺寸(mm) | 重量(g) | | 电 阻 体 | 标准散热板(铝) | Amax | B | Lmax | Hmax | C | l | l1 | M | N | Ф1 | Ф2 | 表面积cm2 | 厚度(mm) | | RX24 | 5 | 155 | 16 | 36.5 | 8 | 8.5 | 11.4 | 12 | 4.4 | 1.5 | 1.5 | 2.2 | 415 | 1 | 3 | | 10 | 19.5 | 21 | 40.5 | 10 | 11.2 | 14 | 16 | 5 | 2 | 2 | 2.5 | 415 | 6 | | 20 | 27 | 27 | 48.0 | 13 | 14.3 | 18.3 | 20 | 7 | 2 | 2 | 3.5 | 535 | 11 | | 30 | 34 | 29 | 55.0 | 15.5 | 16.3 | 25 | 22 | 7.3 | 2 | 2 | 3.5 | 535 | 18 | | 50 | 50 | 29 | 71 | 15.5 | 16.3 | 40 | 22 | 7.3 | 2 | 2 | 3.5 | 995 | 30 | | 75 | 65.5 | 48 | 86.5 | 26 | 27 | 23.5 | 37 | 11.5 | 3.5 | 3 | 4.4 | 995 | 3 | 90 | | 100 | 98 | 48 | 119 | 26 | 27 | 35 | 37 | 11.5 | 3.5 | 3 | 4.4 | 995 | 160 | | 150 | 130 | 48 | 151 | 26 | 27 | 35 | 37 | 11.5 | 3.5 | 3 | 4.4 | 995 | 240 | | RXG24 | 75 | 65.5 | 48 | 93.5 | 26 | 27 | 23.5 | 37 | 11.5 | 3.5 | M3 | 4.4 | 995 | 90 | | 100 | 98 | 48 | 126 | 26 | 27 | 35 | 37 | 11.5 | 3.5 | M3 | 4.4 | 995 | 160 | | 150 | 130 | 48 | 158 | 26 | 27 | 52 | 37 | 11.5 | 3.5 | M3 | 4.4 | 995 | 240 | | 200 | 92 | 73 | 132 | 45 | 46.5 | 35 | 58 | 21 | 5 | M6 | 5.5 | 3750 | 420 | | 250 | 112 | 73 | 152 | 45 | 46.5 | 45 | 58 | 21 | 5 | M6 | 5.5 | 4765 | 480 | | 300 | 130 | 73 | 170 | 45 | 46.5 | 51 | 58 | 21 | 5 | M6 | 5.5 | 5780 | 580 | | 500 | 204 | 73 | 244 | 45 | 46.5 | 87 | 58 | 21 | 5 | M6 | 5.5 | 8500 | 970 |
■ 主要技术指标 | 型 号 | 额定功率(W) | 阻值范围(Ω) | 阻值允许偏差(%) | 温度系数 (×10-6/℃) | 绝缘电压(V) | 最高过负荷电压(V) | | 带散热板 | 不带散热板 | | RX24 | 5 | 3 | 0.01Ω～1KΩ | F(±1%) D(±5%) | ±100 ±50 | 1000 | 1500 | | 10 | 8 | 0.01Ω～1.5KΩ | | 20 | 12.5 | 0.01Ω～7.5KΩ | | 30 | 15 | 0.01Ω～10KΩ | | 50 | 20 | 0.01Ω～15KΩ | | RXG24 | 75 | 45 | 0.01Ω～20KΩ | 2000 | 3000 | | 100 | 50 | 0.01Ω～24KΩ | | 150 | 55 | 0.01Ω～30KΩ | | 200 | 55 | 0.01Ω～36KΩ | | 250 | 60 | 0.01Ω～39KΩ | | 300 | 75 | 0.01Ω～47KΩ | | 500 | 200 | 0.01Ω～51KΩ |
■主要检验项目、试验方法及性能要求 | 检验项目 | 性能要求 | 试验方法 | | 电阻温度系数 | ≤±100(×10-6/℃) | -55℃/+20℃ 20℃/+125℃ | | 引出端强度 | R≤±(1%R+0.05Ω) | 拉力40N | | 耐电压 | 无击穿或飞弧 | 交流电压，其峰值为绝缘电压的1.42倍，1min | | 可焊性 | 焊料能自由流动并与引线润湿 | 235±5℃ 2±0.5s | | 耐焊接热 | ΔR≤±(1%R+0.05Ω) | 260±5℃ 10±1s | | 过载 | ΔR≤±(1%R+0.05Ω) | 5倍额定功率 5s | | 温度快速变化 | ΔR≤±(1%R+0.05Ω) | -55℃/+125℃ 5次循环 | | 振动 | ΔR≤±(1%R+0.05Ω) | 10～500Hz 98m/s2 | | 表面温升 | ≤275℃ | VR | | 耐脉冲 | ΔR≤±(0.2%R+0.05Ω) | MIL-STD-202 100g,6毫秒10次 | | 长期负荷 | ΔR≤±(1%R+0.05Ω) | +25±2℃ VR 1000h | | 稳态湿热 | ΔR≤±(1%R+0.05Ω) | +40±2℃ 湿度95～93% 240h |
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