SRP12_MIL-461/1275/705 DC-DC 12V~40V PSU

MIL-STD-461/1275/704  EMI Power Module , 12V to 40V Input, Extended Temp.-40 to 85°C


  • MIL-STD-704 & MIL-STD-1275 MIL-STD-461 & DO-160 Support
  • 12-40V DC-In, 150W , 12V Output up to 12.5 Amp
  • Input EMI filtering
  • Over-current, over-voltage and over-temperature protection
  • Design for reliability under demanding
  • MIL-STD-810G Thermal, Shock, Vibration,Humidity/EMI/EMC conditions
  • Operating temperature: -40 °C to 85 °C
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Technical Profile




MIL-STD-461/1275/704 power supply standards outline requirements for any military ground vehicle power supply. They can also be useful to civilian manufacturers of off-road vehicles and heavy equipment. Military vehicles employ a nominal 28 V power supply system and much of MIL-STD-1275 requires ensuring these systems are able to handle transient spikes and surges.



MIL-STD-1275/704 Power Supply with Voltage Transient Protections

SRP12 is designed with MIL-STD-1275/704, protecting against vehicle/aircrafts voltage surges, spikes and transients, and even electromagnetic interference. This characteristic is well suited for the strictest military requirement and deliver optimal performance in harsh conditions.
The GAIA Hi-Rel DC/DC CONVERTER it also provides under voltage Lockout (UVLO), Output over Current Protection (OCP), Output Overvoltage Protection (OVP) and Over Temperature Protection (OTP) to made stability and safety.

EMI/EMC compliance
GPUAbout DC/DC :
• Ultra wide input range 12-40 Vd
• 28Vdc input compliant with MIL-STD-704A/D/
• Industry standard quarter brick packag
• Power up to 150
• Wide temperature range : -40/+85°C baseplat
• High efficiency (typ. 86%-90%
• Soft star
• Galvanic isolation 1 500 VD
• Integrated LC EMI filte
• Synchronizabl
• Fully protected by independant securit
• Under voltage lock-ou
• Overvoltage protectio
• Current limitation protectio
• Overtemperature protectio
• No optocoupler for high reliabilit


About Transient Protection design :
The Module features 3 modes of operations as follow:
• Normal operation
Normal operation occurs in between the permanent input voltage of the DC/DC converter;
The LGDS-300 is then operating in steady transparency state.
• Power fail operation
The power fail operation occurs when the input bus drops below 9 Vdc low voltage limit ; an
undervoltage lock-out stops the LGDS-300.
O : 100V/50ms
• Transient operation
The LGDS-300 clamps input transient up to 80V/100ms or 100V/50ms.
The LGDS-300 series is compliant with the international input bus standards :
– MIL-STD-704A/D/E/F
– AECMA EN2282
– GAM-EG13B/AIR2021E
– DO160E cat A, B and Z
– MIL-STD-1275A/B/C/D


Voltage Input

12Vdc to 40Vdc

28Vdc input compliant with MIL-STD-704A/D/F


Voltage Output

150W, 12V @ 12.5 A

Ps. (Input 12V, workable with derating 114W)



Ripple: <300m

Line Regulation: <100 mV

Load Regulation: <100 mV

Efficiency: (typ. 86%-90%)


Dimension (W x D x H)

165 x 260 x 94 mm


2.8 Kg (6.17lbs)


Aluminum Alloy, Corrosion Resistant.


Anodic aluminum oxide (Color Iron gray)


Natural Passive Convection/Conduction. No Moving Parts

Ingress Protection


Connector Type

Amphenol TV07RW-11-54P