SQM Cement Resistor
Categories:水泥电阻 | 

·特点 Features:
1. Small size, easy to be used by PCBA;
2. Good performance to anti-heat, anti-insulation;
3. Low T.C.R., and low noise;
4. Good performance to anti-pulse;
5. Resistance range:0.1Ω~500KΩ;
6. Toleracne:±2%, ±5%, ±10%.
·Product Dimensions and voltage parameters

Rated power |
Resistance |
Dimensions(mm) |
Voltage(VAC) |
L±1.5 |
W±1 |
H±1 |
L1±0.5 |
D±0.1 |
Max. working voltage |
Max. overload voltage |
Insulation voltage |
3W |
0.1~500K |
25 |
12 |
8 |
5 |
0.8 |
150 |
250 |
1000 |
5W |
0.1~500K |
25 |
13 |
9 |
5 |
0.8 |
250 |
450 |
1000 |
7W |
0.1~500K |
39 |
13 |
9 |
5 |
0.8 |
350 |
550 |
1000 |
10W |
0.1~500K |
51 |
13 |
9 |
5 |
0.8 |
450 |
750 |
1000 |
10WS |
0.1~500K |
35 |
16 |
12 |
8 |
0.8 |
450 |
750 |
1000 |
15W/20W |
0.1~500K |
50 |
20 |
10 |
10 |
0.8 |
450 |
750 |
1000 |
·Rated Power Derating Curve

·Product Electrical Performance
Test Item |
Test Condition |
Performance |
T.C.R. |
The resistance change rate by the environment temperature change |
±350PPM/℃ |
Overload in short time |
10 times rated power to the resistor for 5S |
△R≤±(2%R±0.05Ω) |
Insulation resistance |
DC500V, R>100MΩ |
△R≤±(0.5%R±0.05Ω) |
Voltage proof |
Load the insulation voltage to the resistor for 30S |
Leakage current < 2mA |
Solderability |
245±5℃, 5±0.5S |
≥95% |
Soldering Heat |
350±5℃, 3S±0.5S |
△R/R≤±0.5% |
Body robustness |
Central part pressurizing force:10N, 10seconds |
No damage |
Terminal robustness |
Pressurizing force: 20N, 10 seconds |
No damage |
Noninflammabilit |
16 times rated power for 5min |
No flame |