The table shows the characteristics of the bulk ceramic materials for non-inductive high power tubular resistors.
| Characteristic | Type SP | Type AS | Type A |
|---|---|---|---|
| Maximum operating temperature, °C (°F) |
350 (662) | 230 (446) | 230 (446) |
| Temperature coefficient: percent per °C, -55°C (-67°F) to max. rated temperature |
+0.2, -0.08 |
+0.0, -0.08 |
+0.0, -0.2 |
| Voltage coefficient: Max. percent per kilovolt per inch active length (overall length less termination) | 1.0 | 1.0 | - |
| Short time overload: max. percent change after 5 cycles 10 times rated power, 5 seconds on, 90 seconds off | 2.0 | 2.0 | - |
| Moisture resistance: max. percent change when tested per MIL-STD-202 Method 103 |
2.5 | 2.5 | 2.5 |