Cosel CHS 504W Isolated DC-DC Converter PCB Mount, Vin 36 → 76 V dc, Vout 12V dc. Input Voltage Nominal: 48 V dc. Isolation Voltage: 500 V dc, 1000 V ac, 2250 V dc. Output Current: 42A. Package: DIP. Efficiency: 0.95. Minimum Temperature: -40°C. Maximum Temperature: +85°C. Load Regulation: ±12mV. Line Regulation: ±12mV. Length: 58.9mm. MPN: CHS5004812-B