The type 500AS / 500BA series of slab resistors provide excellent high voltage pulse and energy capability for applications where extra voltage and energy capability are required. Typical applications for 500AS / 500BA slab resistors are:
- High voltage power supply resistors
- High energy capacitor charge/discharge resistors
- Pulse test equipment resistors
- Radar/broadcast transmitter resistors
- Laser/imaging equipment resistors
| Operating temperature | -55°C to +230°C (-67 to 446°F) |
|---|---|
| Temperature coefficient | + 0.0 to -0.08 %/°C |
| Short time overload 1) | ±2% |
| Load life 2) | ±5% |
| Thermal shock 3) | ±3% |
| Moisture resistance 4) | ±5% |
Note: When required, type SP material can withstand short periods of use at red-heat conditions, i.e. up to 550-600°C (1031-1112°F)
1) Max. % change after 5 cycles - 10 times rated power, 5 seconds on, 90 seconds off
2) Max. % change after 1000 hrs. rated power 1-1/2 hours on; 1/2 hour off
3) Max. % change after 10 cycles -55 to +125°C (-67 to 257°F)
4)Max. % change when tested per MIL-STD-202, Method 103
| Density | 2.2-2.4 gm/cc |
|---|---|
| Specific heat | 0.22-0.24 cal/gm °C |
| Thermal conductivity | 0.003-0.006 cal/cm/°C/sec |
Power rating curves
Resistor surface temperature rise versus power
