Recom, 3.3V dc Output Voltage

RS Stock No.:: 166-6621
Mfr. Part No.:: R-78AA3.3-0.5SMD
Brand:: Recom

Bulk discount available

Subtotal (1 tube of 33 units)*

Kr. 3 359,47

(exc. VAT)

Kr. 4 199,34

(inc. VAT)

FREE delivery for online orders over 500,00 kr

Temporarily out of stock

Shipping from 10 August 2026

Need more? Click ‘Check delivery dates’ to find extra stock and lead times.

Tube(s)	Per Tube	Per unit*
1 - 4	Kr. 3 359,47	Kr. 101,802
5 - 9	Kr. 3 258,68	Kr. 98,748
10 - 24	Kr. 3 157,90	Kr. 95,694
25 - 49	Kr. 3 057,11	Kr. 92,64
50 +	Kr. 2 956,32	Kr. 89,585

*price indicative

RS Stock No.:: 166-6621
Mfr. Part No.:: R-78AA3.3-0.5SMD
Brand:: Recom

Specifications

Technical Reference

Legislation and Compliance

Product Details

Find similar products by selecting one or more attributes.

Select all	Attribute	Value
	Brand	Recom
	Output Voltage 1	3.3V dc
	Width	9.6mm

	Select all
	Brand Recom
	Output Voltage 1 3.3V dc
	Width 9.6mm

Datasheet

COO (Country of Origin):: TW

RECOM Switching Regulator, Surface Mounting, Adjustable Output - R-78AA-0.5 Series - R-78AA3.3-0.5SMD

A calm port in a Storm – that's what you GET with this switching regulator from RECOM. It stabilises varying voltage inputs ranging from 4.75 to 32V DC to give you a steady 3.3V DC output that's safe for low-voltage components like LED lamps. As an added advantage, you can adjust the output between 3 and 5.5V to suit your system's needs. The unit comes with integrated ON/OFF controls, so you can keep a secure handle on its operation.

Features & Benefits

• Non-conductive plastic housing for impact resistance and prevention of electric shocks

• Continuous short-circuit protection with automatic recovery to ensure safe operation

• Broad operating temperature range between -40°C and +85°C for use in challenging settings

• Low ripple and noise rating of 30mV for smooth signal transmission

Applications

• Medical equipment

• Research laboratories

• Automotive manufacture

How do I mount this switching regulator?

For ease, you can surface-mount this regulator directly onto your equipment via vapour phase soldering.

How efficient is this switching regulator?

This device offers up to 91% efficiency, which means it loses next to nothing in heat, saving you the bother of installing a heatsink.

R78AAxx-0.5SMD Series

Replacement for R-78Axx-0.5SMD series

Non-isolated

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

Note

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.

Standards

EN-60950-1