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The TDK Corporation SCS4028 is an open-frame AC-DC power supply designed for ITE (Commercial) applications. It delivers 40W of power under convection cooling and up to 55W with forced air. The unit accepts a wide AC input range of 85-265 VAC and features a single 28V output with adjustable output capability.
Key electrical specifications include 70% efficiency at full load and nominal AC line, with a hold-up time of 20ms. Protection features include overcurrent protection with automatic recovery and overvoltage protection on the main output. The operating temperature range is 0°C to 70°C, with derating required above 50°C.
Mechanically, the SCS4028 has a compact size of 5.00" L x 3.00" W x 1.00" H and is designed for chassis mounting. It meets global safety agency approvals including UL60950-1, CSA60950-1, IEC/EN60950-1, and carries the CE Mark. Surge immunity is rated to EN61000-4 level 3, and EMI performance meets FCC Class B and EN55022 B standards.
The SCS4028 provides a single output of 28V DC.
The SCS4028 is rated at 40W with convection cooling and 55W with forced air cooling.
The AC input range is 85-265 VAC at 47-63 Hz.
The operating temperature range is 0°C to 70°C with linear derating to 50% load from 50°C to 70°C.
The SCS4028 is approved to UL60950-1, CSA60950-1, IEC/EN60950-1, and carries CE Mark.
The SCS4028 is an open frame converter measuring 3 x 5 x 1 inches (127.0 x 76.2 x 25.4 mm) for chassis mounting.