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Made in the USA

Model: 3721-D12

3721-D12

15 Watt Hybrid DC-DC Converter

Features

Completely self contained Thick Film Hybrid DC-DC Converter
For MIL-STD 704/1275 applications
No External Filter Caps required
Fully Isolated design
Inhibit-not function
Power on soft start
Short Circuit protection
Fully hermetic package
Fully Isolated design with magnetically coupled feedback
No Optocouplers

Specifications

Input: 28 VDC
Input Range (Continuous): 15 VDC to 50 VDC
Input Range (Full Power): 18 VDC to 50 VDC
Transient Survival Voltage: 80 VDC
Isolation Input to Case: 500 VDC
Isolation Input to Output: 500 VDC
Isolation Output to Case: 100 VDC
Storage Temp: -55 °C to +150 °C
Shock: 50 G's
Acceleration: 500 G's
Vibration: 30 G's
Weight: 65 gms typical

Environment

Grade I:
Full Output Power at Tcase = 85°C
Minimum Output Power at Tcase = -55°C
Linearly derates to zero at Tcase = 115
TID up to kRad(Si)
No SEE up to 60MeV*cm2/mg
Grade M:
Full Output Power at Tcase = 85°C
Minimum Output Power at Tcase = -55°C
Linearly derates to zero at Tcase = 115
TID up to kRad(Si)
No SEE up to 60MeV*cm2/mg
Grade E:
Full Output Power at Tcase = 125°C
Minimum Output Power at Tcase = -55°C
Linearly derates to zero at Tcase = 135
TID up to kRad(Si)
No SEE up to 60MeV*cm2/mg

Dual Output Devices

Parameters Conditions 3721-D12 (15W)
MIN TYP MAX
Output Voltage (FLD) — +11.76
-11.76		 +12.0
-12.0		 +12.24
-12.24
Output current Vin min — Vin max ±0.025mA - ±0.25A
Efficiency Pout = max rated load 77% 81% -
Line regulation Pout = max rated load
Vin min — Vin max		 - ±120mV ±240mV
Load regulation Pout = 10% to F.L. - ±240mV ±360mV
Output ripple F.L. BW 2 MHz
mVpp		 - 120 240

Pinout Table

3721-DXX
Pin-1: + input
Pin-2: + output
Pin-3: + output ret
Pin-4: - output
Pin-5: N/C
Pin-6: case
Pin-7: input ret
Pin-8: + input

Case Styles

Part Number Designator Case Style Pin Count Mounting Step File
F – 12 Pin Case Style 3 12 Solder Sealed Flanged PCB Mount View PDF