| Model | HKI250-033NB |
| Output | direct voltage/current | 3.3V-75A |
| voltage range | 2.5~4.5V |
| current range | 0~75A |
| stabilized voltage precision | ±3% |
| ripple | ＜50mVp-p |
| Input | least efficiency | 74% |
| voltage range | 180-264VAC |
| surge current | Cold-boot＜100A/230VAC |
| Protection | overvoltage | 5.5V-6.5V |
| overcurrent | 82.5-100A |
| short circuit | When the output terminal is short-circuited, the power supply cannot be damaged, cannot catch fire, and can automatically recover after the short-circuit is eliminated |
| Environment | operating temperature | -20～+65℃，0～90﹪RH，no condensation（please refer to derating curve） |
| reserving temperature | -40～+85℃，0～95﹪RH，no condensation |
| Safety | vibration | 10～500HZ,5G 10 min/cycle，60 min/X,Y,Z directions |
| safety standard | GB4943，IEC60950-1 approved |
| electromagnetic compatibility standard | EN55022 Class A, GB9254 Class A,EN61000-4-2,3,4,5,6,8,11 , EN61000-3-2，3 |
| Withstand voltage | I/P-O/P：3KVAC I/P-FG: 2KVAC O/P-FG: 0.5KVAC |
| Other | dimensions | 215*115*30mm |
| package | 16pcs/13kg |
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