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Mean Well

Mean Well MHB75-12S12 DC-DC Converter - 75W - 9~18V in 12V out 6.25A

SKU MHB75-12S12
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Overview

MHB75-12S12 is the 12V output model of this series: rated power 75W, typical efficiency 87%.

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

MHB75-12S12Specifications 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
12VDC
VOLTAGE RANGE
9 ~ 18VDC
SURGE VOLTAGE (100ms max.)
25VDC
UNDER VOLTAGE LOCKOUT
Power up: 8.8VDC, Power down: 8VDC
EFFICIENCY (Typ.)
87%
DC CURRENT FULL LOAD
7200mA
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

MHB75-12S12 M H B 7 5 series
M H B 7 5 series
MHB75-12S12 Remote ON/OFF Control
Remote ON/OFF Control
MHB75-12S12 +Vin
+Vin
MHB75-12S12 Output
Output
MHB75-12S12 Thermal Curve
Thermal Curve
MHB75-12S12 Case Heat Sink (Optional)
Case Heat Sink (Optional)
MHB75-12S12 Heatsink Assembly
Heatsink Assembly
MHB75-12S12 Packing
Packing

Downloads

FAQ

Can I use the MHB75-12S12 to power 12V automation devices from a 12V battery or DC source?

This unit accepts 9-18V input and provides a constant 12V output, which fits 12V-class DC systems that need regulated output. It is rated for 75W and can supply up to 6.25A at 12V.

Is this converter a fit for 12V embedded control hardware in industrial or vehicle-mounted equipment?

It is suitable for 12V electronics that operate within a 75W load envelope and need constant-voltage output. The converter provides up to 6.25A at 12V from a 9-18V input range.

Can the MHB75-12S12 be used for 12V instrumentation or monitoring modules in harsh temperature environments?

The stated operating range is -40°C to +100°C case temperature, with thermal shutdown at 100°C ±5°C, so derating or cooling is needed per the thermal curve in hot conditions. It also provides constant 12V output with up to 6.25A available.

Would this work for compact 12V subsystems where size and weight matter?

The unit measures 61.0 × 57.9 × 12.7 mm and weighs 95 g, which supports use in compact equipment. Its electrical rating is 75W with constant 12V output up to 6.25A from a 9-18V input.

Can I use this converter in an outdoor or exposed location?

The specs list an operating range of -40°C to +100°C case temperature, with thermal shutdown at 100°C ±5°C, but they do not include an IP rating. Based on the provided data, temperature capability is specified, while exposed outdoor suitability is not.

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Mean Well MHB75-12S12 DC-DC Converter - 75W - 9~18V in 12V out 6.25A
Mean Well

Mean Well MHB75-12S12 DC-DC Converter - 75W - 9~18V in 12V out 6.25A

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MHB75-12S12 is the 12V output model of this series: rated power 75W, typical efficiency 87%.

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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