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Mean Well

Mean Well MHB100-48S12 DC-DC Converter - 100W - 36~75V in 12V out 8.3A

SKU MHB100-48S12
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Overview

MHB100-48S12 is the 12V output model of this series: rated power 100W, typical efficiency 89%.

Features

  • Half-brick size (2.28"X2.4"X0.5") 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

MHB100-48S12Specifications from the official datasheet (2024-04-30 edition)

OUTPUT

DC VOLTAGE
12V
CURRENT RANGE
0 ~ 8.3A
RATED POWER
100W
RIPPLE & NOISE (max.)Note.2
150mVp-p
VOLTAGE ACCURACYNote.3
±1.0%
LINE REGULATION
±0.2%
LOAD REGULATION
±0.2%
SWITCHING FREQUENCY (Typ.)
500KHz
EXTERNAL TRIM ADJ. RANGE (Typ.)
±10%
EXTERNAL CAPACITIVE LOAD (max.)
8300uF

INPUT

RATED DC INPUT
48VDC
VOLTAGE RANGE
36 ~ 75VDC
SURGE VOLTAGE (100ms max.)
100VDC
UNDER VOLTAGE LOCKOUT
Power up: 34VDC, Power down: 32.5VDC
EFFICIENCY (Typ.)
89%
DC CURRENT FULL LOAD
2445mA
DC CURRENT NO LOAD
50mA
FILTER
Pi-network

PROTECTION

OUTPUT OVER CURRENT
110 ~ 140% 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
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
900K 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 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

MHB100-48S12 MHB100 series
MHB100 series
MHB100-48S12 Remote ON/OFF Control
Remote ON/OFF Control
MHB100-48S12 +Vin
+Vin
MHB100-48S12 Output
Output
MHB100-48S12 Thermal Curve
Thermal Curve
MHB100-48S12 Case Heat Sink (Optional)
Case Heat Sink (Optional)
MHB100-48S12 Heatsink Assembly
Heatsink Assembly
MHB100-48S12 Packing
Packing

Downloads

FAQ

Can I use the MHB100-48S12 for 12V industrial monitoring or control hardware on a 36-75VDC source?

Yes, this converter accepts 36-75VDC input and provides a constant 12V output. With 8.3A output current and 100W total power, it fits 12V control, monitoring, and embedded equipment that stays within those limits.

Is this model suitable for powering 12V embedded systems in higher-voltage equipment?

It is suitable when the embedded system requires constant 12V and does not exceed 8.3A or 100W. The 36-75VDC input range makes it better matched to higher-input systems than the 24S input versions.

Can the MHB100-48S12 support 12V automation accessories and control electronics?

Yes, for 12V constant-voltage loads with a combined draw up to 8.3A and 100W. Its compact 61.0 x 57.9 x 12.7 mm package can also help in space-constrained industrial assemblies.

Does this converter work in very cold or hot environments, and is it outdoor-rated?

The specified operating range is -40°C to +100°C case temperature, with thermal shutdown at 100°C±5°C and derating or cooling per the thermal curve. No IP rating is provided in the listed specs, so direct outdoor exposure or water resistance is not established by this product data.

What are the main differences between the MHB100-48S12 and its sibling models?

The sibling list shows six 100W variants split across two input families. The 24S group includes 5V 20A, 12V 8.3A, and 24V 4.17A models, and the 48S group includes 5V 20A, 12V 8.3A, and 24V 4.17A models, with this unit being the 48S 12V 8.3A version.

Payment & Security

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Mean Well MHB100-48S12 DC-DC Converter - 100W - 36~75V in 12V out 8.3A
Mean Well

Mean Well MHB100-48S12 DC-DC Converter - 100W - 36~75V in 12V out 8.3A

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MHB100-48S12 is the 12V output model of this series: rated power 100W, typical efficiency 89%.

Features

  • Half-brick size (2.28"X2.4"X0.5") 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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