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Suggested alternative: HE104: 60W (same power, improved performance)

The HE104-DX is a 60 Watt PC/104 DC-DC rugged power supply. The HE104-DX is specifically designed for the rugged requirements of vehicular applications and has heavy-duty transient suppressors (3000W) on both main and secondary inputs) that clamp the input voltage to safe levels, while maintaining normal power supply operation.

The HE104-DX is a state-of-the-art Mosfet based design that provides outstanding line and load regulation with efficiencies up to 95 percent. Organic Semiconductor Capacitors provide filtering that reduces ripple noises below 20mV. The low noise design makes the HE104-DX ideal for use aboard aircraft or military applications or wherever EMI or RFI must be minimized. The HE104-DX has a wide input range of 6 - 40V DC (>6:1). The +5V, +12V, -5V and -12V DC outputs are controlled by a constant frequency architecture regulator that provides excellent line and load transient response. The HE104-DX is also available in a low cost, +5V and +12V output only configuration, the HE104-DXL.

The HE104-DX is a compact design measuring 3.55" x 3.775" x 0.9" and has an operating temperature of -40° to +85°C. The HE104-DX is available from stock and is now RoHS compliant.


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


Electrical Specifications

  • 5V output* 12A
  • 12V output 2.5A
  • -5V output 400 mA
  • -12V output 500 mA

Input Voltage

  • 6 to 40VDC


  • Size (W x L x H)**** 3.55” x 3.75” x 0.55”
  • Weight 6.08 oz/172.37 grams
  • Temperature Range -40 to +85°C

Performance Characteristics

  • Peak to Peak ripple* <20mV
  • Load Regulation** <60mV
  • Line Regulation** 40mV
  • Output Temp. Drift** <40mV
  • Output Ripple** 20mV
  • Quiescent Current*** 2mA
  • Efficiency up to 95%


File Type Description
he104_dx_spec.pdf Spec Sheet HE104-DX Spec Sheet
he104_dxl_spec.pdf Spec Sheet HE104-DXL Spec Sheet
he104_dx_man.pdf User Guide HE104-DX Manual
HE104_DX-mtbf.pdf MTBF MTBF - HE104-DX

Ordering Info

Part Number Description
HE104-DX-N-PBF PC/104, In 6-40VDC, Out 60 Watt, +5V@12A, +12V@2.5A, -5V@400mA, -12V@500mA, (-40 to +85°C), No Bus
HE104-DX-PBF PC/104, In 6-40VDC, Out 60 Watt, +5V@12A, +12V@2.5A, -5V@400mA, -12V@500mA, (-40 to +85°C), ISA Bus
HE104-DXL-N-PBF PC/104, In 6-40VDC, Out 60 Watt, +5V@12A, +12V@2.5A, (-40 to +85°C), No Bus
HE104-DXL-PBF PC/104, In 6-40VDC, Out 60 Watt, +5V@12A, +12V@2.5A, (-40 to +85°C), ISA Bus
Accessories and Options
CH Humiseal conformal coating and epoxy
CON-HE104-DX-KIT Replacement Connector Kit for HE104-DX power supplies
CON-HE104-DXL-KIT Replacement Connector Kit for HE104-DXL power supplies
CS Silicon conformal coating and epoxy
CU Urethane conformal coating and epoxy
NS Non-Stack Through Bus, modifies N
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Tri-M Technologies Inc.
208 – 31510 Gill Avenue
Mission, BC, Canada  V4S 0A1

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