IR HiRel Product Families



M3GB hybrid DC-DC converter with 28 Vin and 12 Vout single output



Total Dose > 200 kRads(Si), typically usable to > 300 kRads(Si)

SEE Hardened to LET up to 82 MeV.cm2/mg

Internal EMI filter; Converter Capable of meeting MIL-STD-461C CE03

Low Weight, < 100 grams

Magnetically Coupled Feedback

18V to 50V DC Input Range

Up to 40W Output Power

Single and Dual Output Models

High Efficiency - to 83%

-55°C to +125°C Operating Temperature Range

100mOhms at 100VDC Isolation

Under-Voltage Lockout

Short Circuit and Overload Protection

Remote Sense on Single Output Models

Adjustable Output Voltage for all Models

Synchronization Input and Output

External Inhibit

Greater Than 7,000,000 hour MTBF


Total Dose kRad (Si)200
Total Output Power (W)40
Nominal Input Voltage28
Output Voltage (V)+ 12
IOUT (A)+ 3.34
Typical Efficiency (%)80
Operating Temperature85°C
DLA Drawing5962-03221
DLA QualifiedSMD
Qual LevelRadiation Hardened
Input Voltage Min (V)18
Max Operating Temperature125°C
Input Voltage Max (V)50
Base Part StatusActive
IOUT Single (A)+ 3.34
Output Voltage Single (V)+ 12

Part # M3GB2812S/EM

M3GB hybrid DC-DC converter with 28 Vin and 12 Vout single output

DescriptionPart NumberStatusStandard Pack Quantity
Engineering ModelM3GB2812S/EMACTIVE

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