| Cooling and case temperature |
Fanless free-air convection; operating case temperature −40°C to +85°C; maximum case temperature +85°C. These are case-temperature limits, not unconditional ambient full-load ratings. |
| Temperature/load conditions |
Horizontal installation: 100% load from −40°C through +60°C ambient, then derate to 65% at +70°C. The case-temperature graph permits 100% through +85°C and ends there. |
| Input/load derating |
At 60 Hz: 90 VAC permits 80% load, rising to 100% at 100 VAC and remaining at 100% through 295 VAC. |
| Lifetime conditions |
Catalog typical life expectancy exceeds 50,000 hours when the designated tc/TMP point is about 80°C or lower. The illustrated lifetime is about 50,000 h at 80°C and falls further as case temperature rises. Graph estimates are not an extension of the operating-temperature ratings. |
| Temperature coefficient |
±0.03%/°C from 0°C to +60°C. |
| Humidity and storage |
Working: 20–95% RH, non-condensing. Storage: −40°C to +80°C, 10–95% RH. |
| Altitude derating |
Above 2000 m, reduce allowable ambient temperature by 3.5°C per additional 1000 m for this fanless driver. |
| Vibration |
10–500 Hz, 5 G; 12 minutes per cycle, 72 minutes along each X, Y and Z axis. |
| MTBF reference |
4523.2 K hours minimum, Telcordia SR-332; 455.5 K hours minimum, MIL-HDBK-217F at 25°C. MTBF is distinct from service lifetime. |