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Diamond Point International

Tri-M HE104-75W - 75W Rugged PC104 Power Supply

5V, 12V & -12V Outputs Standard, -40 to +85 Operation


For applications requiring a DC-DC PC104 power converter that supplies up to 75W of power, Tri-M offers the HE104-75W. It is ideal for use on 12VDC and 24VDC mobile applications where power from a DC source (input) needs to be converted (output) to match the applications power requirements - generally an embedded computer.

Efficiency of the HE is over 90% - the higher efficiency means less heat is generated - and it is designed to operate in extended temperature applications where temperatures can be between -40°C and +85°C.

Input voltage spikes that go beyond the input voltage window (9VDC to 40VDC) are managed through transient suppressors that restrict the input voltage, while maintaining normal output power operation.

The HE104-75W is designed to minimize any generated noise or interference, allowing it to be used for airborne or ground vehicles that encounter EMI or RFI.


  • High efficiency
  • Extended temperature operation
  • Rugged design
  • Transient supression
  • Clean and filtered power for the PC/104 bus


Power Supply

Input6V to 40V DC
Output(s)5V output: 15A
12V output: 3A
-12V output: 0.5A

Load Regulation (5V output) < 60mV
Line Regulation (5V output) 40mV
Output temp. drift (5V output) < 40mV
Switching Frequency 312kHz
Output Ripple (5V output) < 20mV
Conducted Susceptibility (5V output) > 57db
EfficiencyUp to 90%


ExpansionStandard 16 bit PC/104 interface
8-bit and 16-bit bus stack through headers are installed
Electrical6 - 40VDC - see above for more details
MechanicalDimensions: 90mm x 96mm (3.55" x 3.775"), standard PC/104
Conformal CoatingOn request
TemperatureTemperature range (operation): -40°C to +85°C
Temperature range (storage): -40°C to +85°C
Weight6.08oz / 172.37g
MTBF28.4 years
Warranty1 Year

Ordering Details

BoardHE104-75W-N-PBF PC/104, In 6-40VDC, Out 75 Watt, +5V@15A, +12V@3A, -12V@500mA, (-40 to +85°C), No Bus
HE104-75W-PBF PC/104, In 6-40VDC, Out 75 Watt, +5V@15A, +12V@3A, -12V@500mA, (-40 to +85°C), ISA Bus
HE104+75W-PBF PC/104, In 6-40VDC, Out 75 Watt, +5V@15A, +12V@3A, -12V@500mA, (-40 to +85°C), ISA Bus, PCI Bus

-FON Forced On Option (factory installed)
-CH Add suffix for Humiseal conformal coating and epoxy (factory installed)
-CS Add suffix for Silicon conformal coating and epoxy (factory installed)
-CU Add suffix for Urethane conformal coating and epoxy (factory installed)
-NS Non-Stack Through Bus, modifies N (factory installed)
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