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RX20 功率电阻 |
产品中心2008-12-5 |
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■ 外观尺寸及主要技术指标
额定功率(W) |
阻值范围(Ω) |
外 型 尺 寸(mm) |
阻值精度(%) |
温度系数 |
D±1 |
L1±3 |
L2±3 |
h±3 |
H±3 |
N±1 |
Ф±1 |
q±1 |
Q±1 |
15W |
0.12Ω~15KΩ |
16 |
50 |
68 |
20 |
40 |
6 |
3 |
4.5 |
15 |
±5% |
±250ppm |
20W |
0.12Ω~20KΩ |
20 |
52 |
78 |
26 |
52 |
6 |
3 |
5 |
20 |
30W |
0.12Ω~25KΩ |
20 |
75 |
100 |
26 |
52 |
6 |
3 |
5 |
20 |
40W |
0.12Ω~30KΩ |
20 |
75 |
100 |
26 |
52 |
6 |
3 |
5 |
20 |
50W |
0.3Ω~30KΩ |
28 |
90 |
100 |
26 |
52 |
9 |
3 |
5 |
20 |
75W |
0.3Ω~30KΩ |
28 |
140 |
166 |
30 |
65 |
9 |
4 |
6 |
27 |
100W |
0.5Ω~30KΩ |
20 |
165 |
195 |
26 |
52 |
6 |
3 |
5 |
20 |
0.5Ω~30KΩ |
28 |
170 |
200 |
30 |
65 |
9 |
4 |
6 |
27 |
0.5Ω~30KΩ |
40 |
90 |
122 |
46 |
90 |
10 |
5 |
6 |
40 |
150W |
0.5Ω~30KΩ |
28 |
215 |
241 |
30 |
65 |
9 |
4 |
6 |
27 |
200W |
0.5Ω~30KΩ |
28 |
267 |
290 |
30 |
65 |
9 |
4 |
6 |
27 |
0.5Ω~30KΩ |
40 |
160 |
192 |
46 |
90 |
10 |
5 |
6 |
39 |
250W |
0.5Ω~30KΩ |
40 |
180 |
212 |
46 |
90 |
10 |
5 |
6 |
39 |
0.5Ω~30KΩ |
40 |
200 |
235 |
46 |
90 |
10 |
5 |
6 |
39 |
300W |
0.5Ω~30KΩ |
40 |
267 |
300 |
46 |
90 |
10 |
5 |
6 |
39 |
350W |
0.5Ω~30KΩ |
40 |
330 |
360 |
46 |
90 |
10 |
5 |
6 |
39 |
400W |
0.5Ω~10KΩ |
40 |
330 |
360 |
46 |
90 |
10 |
5 |
6 |
39 |
500W |
0.5Ω~10KΩ |
50 |
300 |
338 |
45 |
90 |
10 |
5 |
6 |
49 |
750W |
0.5Ω~10KΩ |
50 |
330 |
368 |
45 |
90 |
10 |
5 |
6 |
49 |
1000W |
0.5Ω~10KΩ |
60 |
250 |
305 |
64 |
130 |
15 |
5 |
6 |
59 |
0.5Ω~10KΩ |
60 |
430 |
485 |
64 |
130 |
15 |
5 |
6 |
59 |
1500W |
0.5Ω~10KΩ |
70 |
300 |
360 |
76 |
145 |
15 |
5 |
8 |
69 |
2000W |
0.5Ω~8KΩ |
70 |
430 |
490 |
76 |
145 |
15 |
5 |
8 |
69 |
3000W |
0.5Ω~5KΩ |
80 |
250 |
350 |
90 |
155 |
15 |
5 |
8 |
80 |
5000W |
0.5Ω~5KΩ |
80 |
430 |
530 |
90 |
155 |
15 |
5 |
8 |
80 |
10KW |
0.5Ω~5KΩ |
100 |
430 |
600 |
130 |
365 |
30 |
8 |
10 |
100 |
■ 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 |
≤±250(×10-6/℃) |
-55℃/+20℃ 20℃/+125℃ |
引出端强度 |
R≤±(1%R+0.05Ω) |
拉力20N |
耐电压 |
无击穿或飞弧 |
2500V DC,1min |
可焊性 |
焊料能自由流动并与引出端浸润 |
235±5℃ 2±0.5s |
耐焊接热 |
ΔR≤±(1%R+0.05Ω) |
260±5℃ 10±1s |
短时过负荷 |
ΔR≤±(2%R+0.05Ω) |
10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 |
长期负荷 |
ΔR≤±(2%R+0.05Ω) |
+70±2℃ VR 1000h |
不燃性 |
不燃烧 |
1~6倍额定功率,5分钟 |
表面温升 |
≤350℃ |
施加额定功率 |
绝缘电阻值 |
1000MΩ |
1000V DC |
稳态湿热 |
ΔR≤±(2%R+0.05Ω) |
+40±2℃ 湿度95~98% 240h |
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