Tri-M HE104

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

Manufacturer: Tri-M Technologies
Tri-M HE104

The HE104 is a high efficiency, high-performance DC to DC 60 watt converter that supplies 5V, 12V, -12V (optional), -5V (optional) outputs. The HE104 is specifically designed for vehicular applications requiring low noise, has an ultrawide input range of 6-40V and is ideal for battery and unregulated input applications.

The input protection circuit includes an input filter, three heavy-duty transient suppressors (5000W), Mosfet reverse polarity protection and an active circuit surge stopper with Mosfet.

The HE104 5V output is a synchronous buck regulator design that provides outstanding line and load regulation and ripple noise below 20mV. The low noise design makes the HE104 ideal for use on aircraft and military applications or wherever EMI or RFI must be minimized.

The HE104 12V output is a synchronous boost regulator that converts the 5V rail up to 12V. This allows the main input to range from a low of 6V up to 40V while maintaining both 5V and 12V output within their specified levels.

The HE104 has an opto-isolated on/off input (SD), allowing for a remote signal between 6 and 40V to control the On/Off operation of the outputs. When jumper shunt JP2 is installed (default) the outputs will automatically turn on when main power is applied to CN1.

The HE104 is PC/104 compliant with a 16-bit PC/104 bus. All generated voltages are provided to the auxiliary power connector block CN2. A removable main input power plug allows the HE104 to be easily installed.

  • DC to DC converter for embedded applications
  • Three-stage with active transient surge stopper transient suppression on the input power supply
  • Operates from 6VDC to 40VDC input
  • PC/104 size and mounting holes
  • 60 maximum watt power supply output
  • 5V, 12V, -12V (optional) and -5V (optional)
  • Temperature range -40 to 85C (on heat spreader)
  • Opto-coupled 6 to 40V input for remote On/Off control
  • Reverse Polarity Protected


Input6V to 40V DC
Output(s)5V Output: 12A
12V Output: 2.5A
-5V Output: 400mA (option)
-12V Output 500mA (option)
Ripple: 20mV p-p (+5V line)
EfficiencyUp to 95%
OtherReverse polarity protection as standard (V11 onwards)
Opto-coupled 6 to 40V input for remote On/Off control.


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
MTBF29.6 years
Warranty1 Year



BoardHE104-512-16-PBF PC/104, In 6-40VDC, Out 60 Watt, +5V@12A, +12V@2.5A, (-40 to +85°C), PC/104 Bus
HE104-512-N-PBF PC/104, In 6-40VDC, Out 60 Watt, +5V@12A, +12V@2.5A, (-40 to +85°C), No Bus

-5H Add suffix for -5V output option for above.
-12H Add suffix for -12V output option for above.
-512H Add suffix for both -5V and -12V output options for above.
-T Add suffix for AC termination option **
-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)
** option is factory installed & configured, it can not be retrofitted into existing units

Note that the reverse polarity diode option is now standard on model V11

Example: For the HE104-512-16 fitted with the -512H and -CH coating options, the part number is:

Tri-M HE104 - order online
Recab UK
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