Recom Switching Regulator, 4.75 → 32V dc Input, 3.3V dc Output, 500mA

  • RS Stock No. 166-6621
  • Mfr. Part No. R-78AA3.3-0.5SMD
  • Manufacturer Recom
Technical data sheets
Legislation and Compliance
RoHS Certificate of Compliance
COO (Country of Origin): TW
Product Details

R78AAxx-0.5SMD Series

Replacement for R-78Axx-0.5SMD series
High efficiency up to 97%
Adjustable output voltage
Wide input voltage range
Thermal shutdown and continuous short circuit protection
Remote On/Off control
UL94V-0 package material
SMD 10 pin package


Derate output when operating temperature above +71°C.
MTBF to MIL-HDBK 217F (+25°C).
Stk numbers 706-3922 and 706-3957 have fixed output voltages.



Attribute Value
Input Voltage 4.75 → 32V dc
Output Voltage 3.3V dc
Number of Outputs 1
Output Current 500mA
Power Rating 1.65W
Mounting Type Surface Mount
Package DIP
Minimum Temperature -40°C
Maximum Temperature +85°C
Efficiency 91%
MTBF 29253000h
Load Regulation ±1%
Line Regulation ±0.4%
Ripple And Noise 30mV Pk-Pk
Width 9.6mm
Depth 8.8mm
Weight 2.7g
Length 15.3mm
9 In Global stock for delivery within 4 - 6 working days
Price 1 Tube of 33
MYR 1,410.21
Per Tube
Per unit*
1 +
*price indicative