Recom Switching Regulator, Through Hole, 3.3 V dc Output Voltage, 500 mA Output Current, 1 Outputs

RS Stock No.:: 166-8991
Mfr. Part No.:: R-78HB3.3-0.5L
Brand:: Recom

Recom Switching Regulator, Through Hole, 3.3 V dc Output Voltage, 500 mA Output Current, 1 Outputs

Bulk discount available

Subtotal (1 tube of 42 units)*

£496.80

(exc. VAT)

£596.16

(inc. VAT)

FREE delivery for orders over £50.00

In Stock

Plus 1 unit(s) shipping from 16 March 2026

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

Tube(s)	Per Tube	Per unit*
1 - 4	£496.80	£11.829
5 - 9	£481.90	£11.474
10 - 24	£466.99	£11.119
25 - 49	£452.09	£10.764
50 +	£437.18	£10.409

*price indicative

RS Stock No.:: 166-8991
Mfr. Part No.:: R-78HB3.3-0.5L
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	3.3 V dc
	Product Type	Switching Regulator
	Output Current	500mA
	Mount Type	Through Hole
	Number of Outputs	1
	Power	1.65W
	Efficiency	76%
	Ripple and Noise	20mV Pk-Pk
	Maximum Operating Temperature	85°C
	Minimum Operating Temperature	-40°C
	Series	R-78HB-0.5(L)
	Package Type	SIP
	Line Regulation	±1 %
	Depth	8.5mm
	Width	8.5 mm
	Standards/Approvals	EN 60950
	Weight	4g
	Length	11.5mm
	Maximum Input Voltage	72V dc
	Load Regulation	±0.6 %
	Minimum Input Voltage	9V
	MTBF	7395000h

	Select all
	Brand Recom
	Output Voltage 1 3.3 V dc
	Product Type Switching Regulator
	Output Current 500mA
	Mount Type Through Hole
	Number of Outputs 1
	Power 1.65W
	Efficiency 76%
	Ripple and Noise 20mV Pk-Pk
	Maximum Operating Temperature 85°C
	Minimum Operating Temperature -40°C
	Series R-78HB-0.5(L)
	Package Type SIP
	Line Regulation ±1 %
	Depth 8.5mm
	Width 8.5 mm
	Standards/Approvals EN 60950
	Weight 4g
	Length 11.5mm
	Maximum Input Voltage 72V dc
	Load Regulation ±0.6 %
	Minimum Input Voltage 9V
	MTBF 7395000h

Datasheet

COO (Country of Origin):: TW

RECOM Switching Regulator, 90° Pin,-40°C to +85°C Operating Temperature - R-78HB-0.5(L) Series - R-78HB3.3-0.5L

When you need to rein in a current supply that's too high for your electronic device, go for this switching regulator from RECOM. It takes a broad input voltage range between 9 and 72V DC and brings it down to a safe, lower level of 3.3V DC. The unit is pin-out compatible with linear regulators from the LM78XX range so you can dig out your legacy system and give it an upgrade. Thanks to its wide operating temperature range between -40°C and +85°C, this Durable regulator is up to the challenge in harsh conditions.

• Maximum ripple and noise of 60mVp-p for reduced electrical interference

• Non-conductive plastic body helps prevent electric shocks

• Mean time between failures of 7,395,000 hours for long-term performance

• Efficiency rating of 76% for minimal heat waste

• Pins come at a 90°-angle to easily lay flat in spaces with limited height

Applications

• Telecommunications equipment

• Laptops and desktops

• Robotics systems

• Lighting fixtures

What size is this regulator?

This switching regulator has Compact external dimensions of 11.5 (L) x 17.5 (W) x 8.5mm (D), so you'll find it easy to squeeze it onto your PCB.

R-78HBxx-0.5L Series

Non-isolated

Medical safety approval EN-60601-1-2

High efficiency switching regulator

High voltage input range, up to 72V

Thermal shutdown and continuous short circuit protection

Low ripple and noise

Low profile

Pin-out compatible with LM78XX Linear regulators

”L” version with 90° pins

Note

De-rate above 71°C operating temperature.
MTBF to MIL_HDBK 217F.

Standards

EN-55022, EN-55024, EN-60601-1-2, EN-60950-1