SPM series is
A series of energy-saving switching power modules with
built-in Switching Transformers
control Circuits and Switching Elements (FET)
High full-load efficiency reduces stand-by power requirements. Attaching the input noise filter, the input rectifier diode and the output smoothing capacitor externally enables the easy creation of power switching with high-efficiency , low standby power.
Most Suitable for 4W or less applications
Easy to design compact AC/DC due to small number of external components
Potential design evaluation time savings ; EMC, open/short circuit testing, etc.
Enables significant reduction in power consumption of no-load and light load
Unique Tamura design insures significant reduction in "buzz" under light conditions for lower noise level