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The Traco Power TMSB 2-283 is a compact, enclosed AC/DC power module designed for direct PCB mounting via through-hole technology. This 2.5W converter offers dual outputs of 8.0 VDC at 250 mA and 3.3 VDC at 160 mA, with a combined maximum current of 250 mA. It accepts a universal input voltage range of 85–264 VAC and operates efficiently with a typical efficiency of 69%.
Key features include constant power characteristics, suitability for driving relays, solenoids, LEDs, and capacitive loads, and built-in short circuit and overload protection. The operating temperature range is -30°C to +70°C, with power derating above +60°C. Compliance with EMI standards EN 55022 Class B and FCC Level B is met. The module has an isolation voltage of 4242 VAC between input and output.
With its robust design and safety approvals including CB, CE, and cURus, the TMSB 2-283 is suitable for ITE (Commercial) and Household Appliances applications. Its dimensions are 34.2mm x 28.4mm x 14.8mm.
The input voltage range is 85-264 VAC or 120-370 VDC.
Output 1: 8.0 VDC at 250 mA. Output 2: 3.3 VDC at 160 mA. Combined output current maximum 250 mA.
Operating temperature range is -30°C to +70°C with power derating above +60°C at 2.0%/K.
The TMSB 2-283 is packaged in a 7-DIP through-hole module.
Input to output isolation voltage is 4242 VAC.
Calculated MTBF is greater than 500,000 hours at +25°C per MIL-HDBK-217F (ground benign).
The module provides continuous short circuit protection with automatic recovery.