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Mean Well

Mean Well SKM50B-15 DC-DC Converter - 50W - 18~36V in 15V out 3.33A

SKU SKM50B-15
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Overview

SKM50B-15 is the 15V output model of this series: rated power 50W, typical efficiency 90%.

Features

  • 2"x1" compact size
  • 2:1 wide input range
  • High efficiency up to 92%
  • 1500VDC I/O isolation
  • Built-in remote ON/OFF control
  • Built-in trimming output
  • Comply with CE / FCC without external components
  • Protections: Short circuit / Overload / Input and Output Over voltage
  • Cooling by free air convection
  • Six-sided shield metal case
  • 100% burn-in test
  • Low cost / High reliability
  • Approvals: FCC / EAC / CE / UKCA
  • 2 years warranty

Specifications

SKM50B-15Specifications from the official datasheet (2024-08-02 edition)

OUTPUT

DC VOLTAGE
15V
CURRENT RANGE
0.33 ~ 3.33A
RATED POWER
50W
RIPPLE & NOISE (max.)Note.2
100mVp-p
LINE REGULATIONNote.3
±0.2%
LOAD REGULATIONNote.4
±0.5%
VOLTAGE ACCURACY
±2.0%
SWITCHING FREQUENCY
300KHz typ.
EXTERNAL CAPACITANCE LOAD (max.)
1000uF
EXTERNAL TRIM Adj. RANGE(Typ.)
-20 ~ +10%

INPUT

VOLTAGE RANGE
B: 18 ~ 36VDC
UNDER VOLTAGE SHUTDOWN
B: 16VDC
EFFICIENCY (Typ.)
90%
DC CURRENT Full load
2300mA
DC CURRENT No load
110mA
FILTER
Pi network
REMOTE CONTROL
Power ON : R.C ~ -Vin > 2.5V ~ 30VDC or open circuit ; Power OFF : R.C ~ -Vin < 0.5VDC or short
PROTECTION
Fuse recommended

PROTECTION (Note. 5)

OVER CURRENT
110% ~ 180% rated output power Protection type : Hiccup mode, recovers automatically after fault condition is removed
SHORT CIRCUIT
All output equipped with short circuit Protection type : Hiccup mode, recovers automatically after fault condition is removed
OVER VOLTAGE Input(Typ.)
>40 ~ 50VDC
OVER VOLTAGE Output(Typ.)
5Vo : 7V ~ 8.95V ; 12Vo : 15V ~ 19.2V ; 15Vo : 18V ~ 23.3V Protection type : Clamp by TVS diode

ENVIRONMENT

WORKING TEMP.
-40 ~ +75℃ (Refer to "Derating Curve")
CASE TEMP.
+115℃ max.
WORKING HUMIDITY
20% ~ 90% RH non-condensing
STORAGE TEMP., HUMIDITY
-55 ~ +125℃, 10 ~ 95% RH
TEMP. COEFFICIENT
±0.03% / ℃ (0 ~ 55℃)
VIBRATION
10 ~ 500Hz, 2G 10min./1cycle, period for 60min. each along X, Y, Z axes

SAFETY & EMC

SAFETY STANDARDS
EAC TP TC 020/2011 (EAC TP TC 004 for 48Vin type only) approved
WITHSTAND VOLTAGE
I/P-O/P:1.5KVDC
ISOLATION RESISTANCE
I/P-O/P: 100M Ohms / 500VDC / 25℃/ 70% RH
EMC EMISSIONNote.5
Compliance to BS EN/EN55032 Class A, FCC part 15 Class A without external components , EAC TP TC 020
EMC IMMUNITY
Compliance to BS EN/EN61000-4-2,3,4,5,6,8, light industry level, criteria A , EAC TP TC 020

OTHERS

MTBF
700Khrs min. MIL-HDBK-217F(25℃)
DIMENSION
50.8*25.4*13.7 mm or 2"*1"*0.54" inch (L*W*H)
PACKING
43g ; 10pcs/per tube, 320pcs/32 tube/per carton
Test conditions and notes6
  1. 1.All parameters are specified at normal input, rated load, 25℃ 70% RH ambient.
  2. 2.Ripple & noise are measured at 20MHz by using a 12" twisted pair terminated with a 0.1uf & 47uf capacitor.
  3. 3.Line regulation is measured from low line to high line at rated load.
  4. 4.Load regulation is measured from 10% to 100% rated load.
  5. 5.Consult MEAN WELL for deployment of Class B.
  6. 6.Please prevent the converter from operating in overload or short circuit condition for more than 30 seconds.

Technical drawings

SKM50B-15 Mechanical Specification
Mechanical Specification
SKM50B-15 Packing
Packing

Downloads

FAQ

Can I use the SKM50B-15 to power 15V industrial sensors or control modules from an 18-36VDC source?

Yes, this model is intended for constant-voltage 15V loads when the available input is 18-36VDC. It can supply up to 3.33A with a 50W power rating, which fits many compact industrial control and sensing applications within that load range.

Is the SKM50B-15 suitable for embedded equipment that needs a regulated 15V rail in a compact space?

It can be a practical fit for embedded systems that need a constant 15V output and stay within 3.33A and 50W. Its compact 50.8 × 25.4 × 13.7 mm size and 0.043 kg weight help where board or enclosure space is limited.

Can this converter be used in automation panels that start with 18-36VDC and need 15V output?

Yes, that matches the published operating range of this unit. It accepts 18-36VDC input and provides a constant 15V output up to 3.33A, so it is aligned with automation applications that need a stable 15V auxiliary rail within 50W.

Is the SKM50B-15 appropriate for 15V instrumentation or monitoring equipment?

It can be appropriate when the equipment requires constant-voltage 15V power and the total demand does not exceed 3.33A or 50W. The CE, FCC, and EAC certifications may also matter in regulated industrial or electronic environments.

How does the SKM50B-15 compare with other SKM50B models?

Within the SKM50B series, all listed siblings are 50W models. The SKM50B-05 provides 5V at 10A, the SKM50B-12 provides 12V at 4.17A, and the SKM50B-15 provides 15V at 3.33A. The main selection difference is the output voltage and corresponding current rating.

Can the SKM50B-15 be used in hot or cold industrial environments?

Its operating temperature range is -40°C to +75°C, so it is designed for a wide temperature span. The provided specs do not list an IP rating, so temperature capability is clear, but indoor versus exposed outdoor use should be judged separately from enclosure protection.

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Mean Well SKM50B-15 DC-DC Converter - 50W - 18~36V in 15V out 3.33A
Mean Well

Mean Well SKM50B-15 DC-DC Converter - 50W - 18~36V in 15V out 3.33A

Log in to see price

SKM50B-15 is the 15V output model of this series: rated power 50W, typical efficiency 90%.

Features

  • 2"x1" compact size
  • 2:1 wide input range
  • High efficiency up to 92%
  • 1500VDC I/O isolation
  • Built-in remote ON/OFF control
  • Built-in trimming output
  • Comply with CE / FCC without external components
  • Protections: Short circuit / Overload / Input and Output Over voltage
  • Cooling by free air convection
  • Six-sided shield metal case
  • 100% burn-in test
  • Low cost / High reliability
  • Approvals: FCC / EAC / CE / UKCA
  • 2 years warranty
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