Recom Switching Regulator, Through Hole, 9V dc Output Voltage 28V dc, 500 mA Output Current, 1 Outputs

RS stock no.:: 166-8977
Mfr. Part No.:: R-78E9.0-0.5
Manufacturer:: Recom

Recom Switching Regulator, Through Hole, 9V dc Output Voltage 28V dc, 500 mA Output Current, 1 Outputs

Image representative of range

Subtotal (1 tube of 42 units)*

R 2 729,08

(exc. VAT)

R 3 138,44

(inc. VAT)

FREE delivery for orders over R 1,500.00

Temporarily out of stock

Shipping from 12 October 2026

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

Tube(s)	Per Tube	Per unit*
1 +	R 2,729.08	R 64.978

*price indicative

RS stock no.:: 166-8977
Mfr. Part No.:: R-78E9.0-0.5
Manufacturer:: Recom

Specification

Technical data sheets

Legislation and Compliance

Product Details

Find similar products by selecting one or more attributes.

Select all	Attribute	Value
	Brand	Recom
	Output Voltage 1	9V dc
	Product Type	Switching Regulator
	Output Current	500mA
	Mount Type	Through Hole
	Number of Outputs	1
	Power	4.5W
	Efficiency	94%
	Ripple and Noise	50mV Pk-Pk
	Maximum Operating Temperature	85°C
	Minimum Operating Temperature	-40°C
	Series	R-78E-0.5
	Package Type	SIP
	Line Regulation	±0.5 %
	Weight	2g
	Width	8.5mm
	Depth	10.4mm
	Length	11.6mm
	Standards/Approvals	REACH
	Maximum Input Voltage	28V dc
	MTBF	2182000h
	Load Regulation	±1 %
	Minimum Input Voltage	12V

	Select all
	Brand Recom
	Output Voltage 1 9V dc
	Product Type Switching Regulator
	Output Current 500mA
	Mount Type Through Hole
	Number of Outputs 1
	Power 4.5W
	Efficiency 94%
	Ripple and Noise 50mV Pk-Pk
	Maximum Operating Temperature 85°C
	Minimum Operating Temperature -40°C
	Series R-78E-0.5
	Package Type SIP
	Line Regulation ±0.5 %
	Weight 2g
	Width 8.5mm
	Depth 10.4mm
	Length 11.6mm
	Standards/Approvals REACH
	Maximum Input Voltage 28V dc
	MTBF 2182000h
	Load Regulation ±1 %
	Minimum Input Voltage 12V

Datasheet

COO (Country of Origin):: TW

RECOM Switching Regulator, 9V DC Output Voltage, 12 to 28V DC Input Voltage - R-78E Series - R-78E9.0-0.5

This switching regulator from RECOM adapts supply voltages to suit your PCB-mounted devices. Its step-down switching function works with input voltages between 12 and 28V DC, so it's compatible with many power sources. The device's precise line regulation of ±0.5% means it provides a stable 9V DC output voltage, so you GET a reliably smoothed electrical supply. For system safety, this regulator comes with integrated short-circuit protection. This feature means it resets itself automatically after electrical faults, so you can restart your machines quickly.

Features & Benefits

• Compact dimensions of 11.6 (W) x 10.4 (H) x 8.5mm (D) for a small footprint on your PCB

• Simple through-hole mounting makes installation easy

• Low maximum ripple voltage of 50mV reduces electrical noise

• Works at temperatures between -40°C and +85°C to suit demanding industrial conditions

Applications

• Video cameras

• Television displays

• Radio communication systems

• Automotive industry

Do I need to install a heatsink with this switching regulator?

No, you don't need a heatsink to use this switching regulator safely. Thanks to its maximum efficiency rate of 94%, it doesn't generate enough heat to call for an external sink.