High-voltage resistors
Flat and tubular ceramic high-voltage resistors from 0.25 W to 150 W, with withstanding voltages from 4 kV to 60 kV and resistance values from 1 Ω to 100 GΩ. Four series cover bleeder chains, voltage dividers, capacitor discharge and pulse loads — full manufacturer specification on every page.
RI80 leaded high-voltage resistors
Axial-leaded ceramic tube, 1 W to 30 W, up to 60 kV
RI82 flat (chip-style) high-voltage resistors
Flat ceramic body, 0.25 W to 100 W, up to 60 kV
HO-RI82 high-voltage bleeder resistors
Flat bleeder type, 0.25 W to 100 W, up to 40 kV
High-power tubular & bolt-mount resistors
Tubular and panel-mount bodies for high continuous dissipation
Construction
| Substrate | 96% Al2O3 alumina ceramic |
| Resistive element | Glass-glaze resistance film |
| Termination / leads | Tinned copper |
| Encapsulation | Resin |
| Operating medium | Air (see notes — rating improves substantially when oil-immersed or resin-potted) |
How to specify
- Give the working voltage and the continuous dissipation.
- Give the resistance value and the tolerance you need.
- Tell us the available length and the mounting type.
- For pulse duty, give the peak voltage and the pulse width.
Performance — common to all series
Test items, requirements and methods are identical across the range.
| Test item | Performance requirement | Test method |
|---|---|---|
| Solderability | Infiltration area ≥ 95% | Solder bath 235 ± 5 °C, 2 s |
| Terminal strength | ΔR ≤ ±(1%R + 0.05Ω) | 10 N, 30 s |
| Damp heat, steady state | ΔR ≤ ±(5%R + 0.1Ω) | 40 ± 2 °C, 93 ± 3%RH, 1000 h |
| Vibration | ΔR ≤ ±(1%R + 0.05Ω) | 10–500 Hz, 0.75 mm or 98 m/s², 6 h |
| Resistance to soldering heat | ΔR ≤ ±(1%R + 0.05Ω) | 260 ± 5 °C, 10 ± 1 s |
| Fast temperature change | ΔR ≤ ±(1%R + 0.05Ω) | −55 °C 30 min / 125 °C 30 min, 5 cycles |
| Endurance at 70 °C | ΔR ≤ ±(5%R + 0.1Ω) | 70 ± 2 °C, rated power, 1000 h |
| Short time overload | ΔR ≤ ±(1%R + 0.05Ω) | 1.5 VR, 5 s |
Have a BOM or a Gerber file?
Send it over — you get pricing, availability and a lead time, normally within one working day.