rg40The RG40 is a solid-state, DC to DC switch-mode converter that converts an input DC voltage (27.5 VDC nominal) t o a regulated 13.75 VDC output voltage.

The RG40 meets the Federal Aviation Administration (FAA) technical standard order TSO-C71 (airborne static DC to DC electrical power converter - for air carrier aircraft).

Two or more RG40's may be paralleled (external diodes required) if additional power is required.



Input Voltage: 22 to 41 VDC (27.5 VDC nominal)
Input Current: 18.1 ADC at full load (nominal)
Output Voltage: 13.75 VDC
Output Current: 30.0 ADC at full load
Output Ripple: 13.75 mV
Efficiency: 80% (minimum)
Load Regulation: 1% Line, 1% Load, 1% Temperature
Load Transient
NL to FL condition: 4.0 Vp undershoot for 5.0 mSec. (nominal).

FL to NL condition: 2.0 Vp overshoot for 5.0 mSec. (nominal).

Overload Capacity: 110% of the rated output power for a period of two hours; 150% of the rated output power for a period of 5 minutes ( 1 min. at 70°C ambient temperature). Without damage or degradation, the converter will withstand a sustained short circuit and provide 200% of the rated output current for a period of one minute.
Protection Circuit
(Reverse Polarity):
The converter will trip a MIL-C-5809 25 ADC input circuit breaker in the event of reverse polarity input voltage connection.
Protection Circuit
(Shut Down):
The converter will shutdown under the following conditions:
  • Input voltage > 41 VDC
    (-3 VDC hysteresis)
  • Input voltage < 15 VDC
    (-2 VDC hysteresis)
  • Output voltage > 16 VDC
    (-2 VDC hysteresis)
  • Internal temperature > 100°C.
Temperature: -55°C to +71°C (-65°F to 160°F)
Altitude: 55,000 ft.
Size: 9.50" L x 6.9" W x 3.38" H. (mounting flange included)
Weight: 3.5 lbs.
Environmental: DO-160 Env. Cat F2XBB (LV) XXXXXXXXXXXX(ZA)XXX


Outline Drawing | External Wiring