Tri-M HESC104

3.3V, 5V, 12V & -12V Outputs Standard, Battery Charging, -40 to +85 Operation

Manufacturer: Tri-M Technologies
Tri-M HESC104

The HESC104 is a 60W DC-DC PC104 Power Supply that includes a flash-based microcontroller and a 4 amp charger for advanced power management and smart battery charging. Combined with a Tri-M standard battery pack or super cap module, the HESC104 can be used as an Uninterruptible Power Source (UPS) for a PC104 system. The HESC104 is designed for low noise embedded computer systems, has a wide input range of 6-40V (>6:1) and is ideal for battery or unregulated input applications. The HESC104 is specifically designed for the rugged demands of vehicular applications and has heavy-duty transient suppressors (5000W) that clamp the input voltage to safe levels while maintaining normal power supply operation. The +/-5V DC and +/-12V DC outputs are controlled by a constant off-time current-mode architecture regulator that provides excellent line and load transient response.

The HESC104 provides up to four stages of battery charging and can charge SLA, NiCd, and NiMh batteries and level two and three SMBus compatible batteries. Charge currents are up to 4A, and battery charging voltages are from 9.5 to 19.5V. The HESC104 has advanced power management functions that allow timed on/off control of the HESC104, notification of changes to main power and changes in the battery status. For example, the HESC104 can be programmed to power off the main outputs in 60 seconds and then turn them on again 12 hours later. In addition to smart charging and power supply management, the HESC104 can monitor up to 16 different temperatures using digital I²C digital temp sensors. The HESC104 is available as RoHS, is PC/104 compliant and -40°C to +85°C is standard.


  • High efficiency
  • Extended temperature operation
  • Rugged design
  • Power/OS
  • Smart charging
  • Clean and filtered power for the PC104 bus


Input6 to 40V DC
Output(s)+5V output 12.0A
+12V output 2.5A
-5V output 0.4A
-12V output 0.5A

Peak to Peak ripple* <20mV
Load Regulation** <60mV
Line Regulation** 40mV
Output Temp. Drift** <40mV
Output Ripple** 20mV
Quiescent Current*** 2mA
Soft Start 5V start up risetime = 10 msec
EfficiencyUp to 95%
BatteryCharge Current 0 A to 4.0 A
Charging Voltage 9.5V to 19.5V
OtherOpto-isolated on/off input (SD), allowing for remote control


ExpansionStandard 16 bit PC/104 interface
8-bit and 16-bit bus stack through headers are installed
Electrical6V to 40V DC - see above for more details
MechanicalDimensions: 90mm x 96mm (3.55" x 3.775"), standard PC/104 sized
Conformal CoatingOn request
TemperatureTemperature range (operation): -40°C to +85°C
Temperature range (storage): -40°C to +85°C
Weight6.56oz / 185.92g
MTBF155,201 hours (17.7 years)
Warranty1 Year



PC/104, In 6-40VDC, Out 60 Watt, +5V@12A, +12V@2.5A, -5V@400mA, -12V@500mA, (-40 to +85°C), No Bus

PC/104, In 6-40VDC, Out 60 Watt, +5V@12A, +12V@2.5A, -5V@400mA, -12V@500mA, (-40 to +85°C), ISA Bus
-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)
Tri-M HESC104 - order online
Recab UK
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