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20W Single output minisize power supply switching power supply 12v 24V

WeHo’s MSF-20 series Power supply is a mini type enclosed power supply which serves as a high price-to-performance power supply solution for various industrial applications.

In addition to the high efficiency up to 80%,the design of metallic mesh case enhances the heat dissipation of MS that the whole series operates from -10℃ through 50℃ under air convection without a fan.

White cap over the connectors for security setting of dust-proof protection for electrical shock

And we make transformers and power inductors by pure coppers all by ourselves,

weho Stocks each month: common models 150000 sets, quick delivery;

No Load power consumption lower than 2W

Long Life Long reliability and High Efficiency

Miniature Size, Full  range AC 85-264v input

High Operating Temperature up to 60 ℃

100% full load burn-in test

Size: 97*58*25mm (L * W * H)

MODEL MSF-20-5 MSF-20-12 MSF-20-24
DC VOLTAGE 5V 12V 24V
RATED CURRENT 4A 2A 1A
CURRENT RANGE 0 ~ 4A 0 ~ 2A 0 ~ 1A
RATED POWER 20W 20W 20W
RIPPLE & NOISE (max.) 50mVp-p 50mVp-p 100mVp-p
VOLTAGE ADJ.RANGE 4.75 ~ 5.5V 10.8 ~ 13.2V 21.6 ~ 26.4V
VOLTAGE TOLERANCE ±2.0% ±1.0% ±1.0%
LINE REGULATION ±0.5% ±0.5% ±0.5%
LOAD REGULATION ±1.0% ±0.5% ±0.5%
SETUP, RISE, HOLD TIME 200ms, 100ms, 30ms at full load
VOLTAGE RANGE 85 ~ 264VAC
FREQUENCY RANGE 47 ~ 63Hz
EFFICIENCY (Typ.) 68% 71% 75%
AC CURRENT 0.5A/115VAC 0.25A/230VAC
INRUSH CURRENT (max.) COLD START 15A/115VAC 30A/230VAC
LEAKAGE CURRENT <0.5mA/240VAC
OVERLOAD 105 ~ 135% rated output power
Protection type : Constant current limiting, recovers automatically after fault condition is reoved
WORKING TEMP. -10 ~ +60ºC (Refer to output load derating curve)
WORKING HUMIDITY 20 ~ 90% RH non-condensing
STORAGE TEMP., HUMIDITY -20 ~ +85ºC , 10 ~ 95% RH
TEMP. COEFFICIENT ±0.02%/ºC (0 ~ 50ºC)
VIBRATION 10 ~ 500Hz, 2G 10min./1cycle, 60min. each along X, Y, Z axes
SAFETY STANDARDS Design refer to UL1012
WITHSTAND VOLTAGE I/P-O/P:1.5KVAC I/P-FG:1.5KVAC O/P-FG:0.5KVAC
ISOLATION RESISTANCE I/P-O/P, I/P-FG, O/P-FG:100M Ohms/500VDC
EMI CONDUCTION & RADIATION Design refer to FCC Part15 J Conduction Class B
MTBF 522.1K hrs min. MIL-HDBK-217F (25ºC)
DIMENSION 97*58*25mm (L*W*H)

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