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product guide |
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| Type RH & SH - High Resistance & High Voltage Resistors |
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Types RH and SH are ceramic tubes coated with ceramic film, sintered at a high temperature, and then are helical cut to the exact resistance required. Using this method, resistors can be manufactured to high resistance values, however the resistor becomes inductive due to the helical method of cutting.
Compared to conventional film resistors, these resistors have a much larger allowable injection energy capacity (joules) and higher voltage characteristics.
Typical Applications:
Surge absorber, SR element protection, electric field intensity regulator, capacitor charger, high voltage equipment loader, charging resistor for impulse generator, high voltage and high resistance circuits |
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| RH & SH CHARACTERISTICS: |
| Tolerance: 5, 10, & 20% |
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Load service life (500 hrs rated load): ±5% max. |
| Working temperature: -55°C to +180°C |
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Short time overload test: ±2% max. |
| Temperature coefficient: -0.17%/°C max. |
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Max. operating temperature: 200°C |
Withstand voltage (1.2x50 µ sec):
2.5 kV/cm max (RH) 5.0 kV/cm max (SH)
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Bulk density: 2.2~2.7 |
| Refer to USAGE PAGE for optimum performance of this resistor. |
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| RH STANDARD SPECIFICATIONS |
| Type No. |
40°C
Rated
Power
(W) |
Dimensions (mm) |
Max.
Voltage
(kV) |
Resistance
Value
Range ( ) |
Allowable
Injection
Energy (joule) |
| dia. D |
dia. d |
L |
L1 |
| RH5 |
5 |
8.5±0.5 |
- |
60±2.0 |
38±2 |
1.5 |
50k~20M |
9 |
| RH10 |
10 |
14±0.5 |
8 |
80±1.5 |
10±2 |
2.5 |
50k~20M |
18 |
| RH20 |
20 |
20±1.0 |
14 |
100±1.5 |
13±2 |
3.0 |
50k~20M |
32 |
| RH30 |
30 |
20±1.0 |
14 |
150±1.5 |
15±2 |
4.5 |
50k~20M |
52 |
| RH40 |
40 |
20±1.0 |
14 |
200±1.5 |
15±2 |
6.5 |
50k~20M |
75 |
| RH70 |
70 |
25±1.2 |
17 |
250±2.0 |
22±2 |
8.5 |
50k~20M |
113 |
| RH80 |
80 |
25±1.2 |
17 |
300±2.0 |
22±2 |
10.0 |
50k~20M |
140 |
RH5 will be supplied with lead wires.
RH10 thru RH80 will be supplied with caps or terminals.
SH10 thru SH80 supplied with caps only. |
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