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Mean Well

Mean Well MHB75-24S12 DC-DC Converter - 75W - 18~36V in 12V out 6.25A

SKU MHB75-24S12
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Overview

MHB75-24S12 is the 12V output model of this series: rated power 75W, typical efficiency 88%.

Features

  • Half-brick size (2.28"×2.4"×0.5") with industry standard pin out
  • 2:1 wide input range
  • Protections: Short circuit / Over current / Over voltage / Over temperature
  • High efficiency up to 89%
  • 1500VDC I/O isolation
  • Built-in remote ON/OFF control
  • Built-in remote sense function
  • Trimming output ±10%
  • Five-sided shield metal case
  • Optional heat sinks for extended operating temperature
  • Output 3.3V/15V available
  • Approvals: UL / CUL / EAC / CE / UKCA
  • 3 years warranty

Specifications

MHB75-24S12Specifications from the official datasheet (2024-04-30 edition)

OUTPUT

DC VOLTAGE
12V
CURRENT RANGE
0 ~ 6.25A
RATED POWER
75W
RIPPLE & NOISE (max.)Note.2
100mVp-p
VOLTAGE ACCURACYNote.3
±1.0%
LINE REGULATION
±0.2%
LOAD REGULATION
±0.2%
SWITCHING FREQUENCY (Typ.)
400KHz for 12/24Vin, 300KHz for 48Vin
EXTERNAL TRIM ADJ. RANGE (Typ.)
±10%
EXTERNAL CAPACITIVE LOAD (max.)
10000uF

INPUT

RATED DC INPUT
24VDC
VOLTAGE RANGE
18 ~ 36VDC
SURGE VOLTAGE (100ms max.)
50VDC
UNDER VOLTAGE LOCKOUT
Power up: 17VDC, Power down: 16VDC
EFFICIENCY (Typ.)
88%
DC CURRENT FULL LOAD
3650mA
DC CURRENT NO LOAD
50mA
FILTER
Pi-network

PROTECTION

OUTPUT OVER CURRENT
110 ~ 150% rated output power Protection type : Over current limiting, recovers automatically after fault condition is removed
OUTPUT OVER VOLTAGE (Typ.)
115 ~ 140% rated output voltage Protection type : Output voltage clamp by TVS diode
OUTPUT SHORT CIRCUIT
Protection type : Can be continuous, recovers automatically after fault condition is removed
OVER TEMPERATURE
100℃±5℃of case temperature

FUNCTION

REMOTE CONTROL
Please refer to "Remote ON/OFF Control" for details

OPERATING

OUTPUT TRIMMING
±10%, Please refer to "External Output Trimming" for details

ENVIRONMENT

WORKING TEMPERATURE (Typ.)
-40 ~ +100℃ ; Thermal shutdown at 100℃±5℃of case temperature (please refer to "Thermal Curve")
WORKING HUMIDITY
0% ~ 95% RH max.
STORAGE TEMP., HUMIDITY
-55 ~ +105℃, 0 ~ 95% RH
TEMP. COEFFICIENT
±0.03%/℃ (0~60℃)

SAFETY & EMC

SAFETY STANDARDS
UL60950-1, EAC TP TC 020/2011(EAC TP TC 004 for 48Vin type only) approved
ISOLATION VOLTAGE
I/P-O/P:1500VDC, I/P-Case:1500VDC, O/P-Case:1500VDC
ISOLATION RESISTANCE
I/P-O/P:100M Ohms / 500VDC / 25℃/ 70% RH
EMC EMISSION
Compliance to BS EN/EN55032 (CISPR32) Class A with external components (please refer to "EMC Suggestion Circuit"), EAC TP TC 020
EMC IMMUNITY
Compliance to BS EN/EN61000-4-2,3,4,5,6,8; BS EN/EN55024, light industry level, criteria A, EAC TP TC 020

OTHERS

CASE MATERIAL
Aluminum
MTBF
1000K hrs typ. MIL-HDBK-217F (25℃)
DIMENSION
57.9*61*12.7mm (2.28"*2.40"*0.5") (L*W*H)
PACKING
95g ; 12pcs/EPE, 60pcs/5 per carton
Test conditions and notes4
  1. 1. All parameters NOT specially mentioned are measured at 12,24,48VDC input, rated load and 25℃ of ambient temperature.
  2. 2. Ripple & noise are measured at 20MHz of bandwidth by using a 12" twisted pair-wire terminated with a 1uF ceramic & 10uF tantalum capacitor across output.
  3. 3. The power supply need to connect "+Vout" to "+R.S" and "-Vout" to "-R.S".
  4. 4. The power supply is considered a component which will be installed into a final equipment. The final equipment must be re-confirmed that it still meets EMC directives. For guidance on how to perform these EMC tests, please refer to “EMI testing of component power supplies.”

Technical drawings

MHB75-24S12 M H B 7 5 series
M H B 7 5 series
MHB75-24S12 Remote ON/OFF Control
Remote ON/OFF Control
MHB75-24S12 +Vin
+Vin
MHB75-24S12 Output
Output
MHB75-24S12 Thermal Curve
Thermal Curve
MHB75-24S12 Case Heat Sink (Optional)
Case Heat Sink (Optional)
MHB75-24S12 Heatsink Assembly
Heatsink Assembly
MHB75-24S12 Packing
Packing

Downloads

FAQ

Can I use the MHB75-24S12 for 12V automation and control equipment?

This converter is designed for 12V constant-voltage loads and can provide up to 6.25A within a 75W rating. That makes it suitable for 12V automation, control, and embedded devices powered from an 18-36VDC input source.

Is the MHB75-24S12 a good match for 12V embedded systems in industrial enclosures?

It can be a good fit where the system requires a regulated 12V DC rail at up to 6.25A. The compact 61.0 × 57.9 × 12.7 mm package is also useful in dense equipment layouts or space-constrained industrial enclosures.

Can this 12V model be used for instrumentation or monitoring hardware?

For instrumentation or monitoring hardware that runs on 12V constant voltage, the 75W output and 6.25A current rating define the usable load range. Its -40°C to +100°C operating case temperature range supports demanding ambient conditions when derating or cooling is applied per the thermal curve.

Is the MHB75-24S12 suitable for outdoor equipment cabinets?

The stated operating range is -40°C to +100°C case temperature, with thermal shutdown at 100°C ±5°C, and derating or cooling is needed at higher ambients. However, no IP rating is listed in the specs, so outdoor cabinet suitability against water or dust ingress cannot be verified from this data alone.

How does the MHB75-24S12 differ from the other MHB75 output options?

Across the listed siblings, the output choices are 5V at 15A, 12V at 6.25A, and 24V at 3.13A, with each model rated at 75W. This specific version combines the 18-36VDC input range with the 12V, 6.25A output, while the sibling groups repeat those three outputs for 9-18VDC and 36-75VDC input ranges.

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Mean Well MHB75-24S12 DC-DC Converter - 75W - 18~36V in 12V out 6.25A
Mean Well

Mean Well MHB75-24S12 DC-DC Converter - 75W - 18~36V in 12V out 6.25A

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MHB75-24S12 is the 12V output model of this series: rated power 75W, typical efficiency 88%.

Features

  • Half-brick size (2.28"×2.4"×0.5") with industry standard pin out
  • 2:1 wide input range
  • Protections: Short circuit / Over current / Over voltage / Over temperature
  • High efficiency up to 89%
  • 1500VDC I/O isolation
  • Built-in remote ON/OFF control
  • Built-in remote sense function
  • Trimming output ±10%
  • Five-sided shield metal case
  • Optional heat sinks for extended operating temperature
  • Output 3.3V/15V available
  • Approvals: UL / CUL / EAC / CE / UKCA
  • 3 years warranty
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