R-78K DC/DC Converters

RECOM Power R-78K DC/DC Converters are available in 0.5A, 1A, and 2A versions with fixed outputs of 1.2V, 1.5V, 1.8V, 2.5V, and 6.5V, depending on the model, as well as traditional outputs of 3.3V, 5V, 9V, 12V, and 15V. The R-78K-0.5, R-78K-1.0, and R-78K-2.0 series all offer a wide input voltage range of 4.5VDC to 36VDC with efficiency of up to 95% or 96% and no need for heatsinks. The R-78K units have an ambient operating temperature range of -40°C to +90°C, including versions with no derating. Protections include undervoltage lockout and short circuits with automatic recovery. These SIP3 converters can meet EN 55032 class B EMC specifications with a simple input filter.

Results: 34
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Description Datasheet Availability Pricing (JPY) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Isolation
Number of Outputs
Input Voltage, Min
Input Voltage, Max
Output Voltage-Channel 1
Output Current-Channel 1
Package / Case
Length
Width
Height
Industry
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Series
RECOM Power DC/DC Converters - Through Hole 4.5-36Vin 2.5Vout 1A
Datasheet
486In Stock
Min.: 1
Mult.: 1

Non-Isolated 1 Output 2.5 V 1 A SIP-3 11.5 mm (0.453 in) 7.55 mm (0.297 in) 10.2 mm (0.402 in) Industrial + 115 C - 40 C R-78K-1.0
RECOM Power DC/DC Converters - Through Hole 4.5-36Vin 3.3Vout 500mA
Datasheet
13,736In Stock
Min.: 1
Mult.: 1

Non-Isolated 1 Output 3.3 V 500 mA SIP-3 11.5 mm (0.453 in) 7.55 mm (0.297 in) 10.2 mm (0.402 in) Industrial + 115 C - 40 C R-78K-0.5
RECOM Power DC/DC Converters - Through Hole 4.5-36Vin 3.3Vout 1A
Datasheet
7,334In Stock
Min.: 1
Mult.: 1

Non-Isolated 1 Output 3.3 V 1 A SIP-3 11.5 mm (0.453 in) 7.55 mm (0.297 in) 10.2 mm (0.402 in) Industrial + 115 C - 40 C R-78K-1.0
RECOM Power DC/DC Converters - Through Hole 6.5-36Vin 5Vout 500mA
Datasheet
17,645In Stock
17,544Expected 10/5/2026
Min.: 1
Mult.: 1

Non-Isolated 1 Output 5 V 500 mA SIP-3 11.5 mm (0.453 in) 7.55 mm (0.297 in) 10.2 mm (0.402 in) Industrial + 115 C - 40 C R-78K-0.5
RECOM Power DC/DC Converters - Through Hole 6.5-36Vin 5Vout 1A
Datasheet
16,234In Stock
Min.: 1
Mult.: 1

Non-Isolated 1 Output 5 V 1 A SIP-3 11.5 mm (0.453 in) 7.55 mm (0.297 in) 10.2 mm (0.402 in) Industrial + 115 C - 40 C R-78K-1.0
RECOM Power DC/DC Converters - Through Hole 6.5-36Vin 5Vout 2A
Datasheet
4,515In Stock
Min.: 1
Mult.: 1

Non-Isolated 1 Output 5 V 2 A SIP-3 11.5 mm (0.453 in) 7.55 mm (0.297 in) 10.2 mm (0.402 in) Industrial + 115 C - 40 C R-78K-2.0
RECOM Power DC/DC Converters - Through Hole 2A 6.5-36Vin 5Vout
Datasheet
4,730In Stock
Min.: 1
Mult.: 1

Non-Isolated 1 Output 5 V 2 A SIP-3 11.5 mm (0.453 in) 8.5 mm (0.335 in) 17.5 mm (0.689 in) Industrial + 90 C - 40 C R-78K-2.0
RECOM Power DC/DC Converters - Through Hole 15-36Vin 12Vout 500mA
Datasheet
4,085In Stock
Min.: 1
Mult.: 1

Non-Isolated 1 Output 12 V 500 mA SIP-3 11.5 mm (0.453 in) 7.55 mm (0.297 in) 10.2 mm (0.402 in) Industrial + 115 C - 40 C R-78K-0.5
RECOM Power DC/DC Converters - Through Hole 15-36Vin 12Vout 1A
Datasheet
2,845In Stock
Min.: 1
Mult.: 1

Non-Isolated 1 Output 12 V 1 A SIP-3 11.5 mm (0.453 in) 7.55 mm (0.297 in) 10.2 mm (0.402 in) Industrial + 115 C - 40 C R-78K-1.0
RECOM Power DC/DC Converters - Through Hole 14-36Vin 12Vout 2A
Datasheet
1,548In Stock
946Expected 9/29/2026
Min.: 1
Mult.: 1

Non-Isolated 1 Output 12 V 2 A SIP-3 11.5 mm (0.453 in) 7.55 mm (0.297 in) 10.2 mm (0.402 in) Industrial + 115 C - 40 C R-78K-2.0
RECOM Power DC/DC Converters - Through Hole 2A 14-36Vin 12Vout
Datasheet
1,167In Stock
Min.: 1
Mult.: 1

Non-Isolated 1 Output 12 V 2 A SIP-3 11.5 mm (0.453 in) 8.5 mm (0.335 in) 17.5 mm (0.689 in) Industrial + 90 C - 40 C R-78K-2.0
RECOM Power DC/DC Converters - Through Hole 2A 18-36Vin 15Vout
Datasheet
411In Stock
Min.: 1
Mult.: 1

Non-Isolated 1 Output 15 V 2 A SIP-3 11.5 mm (0.453 in) 8.5 mm (0.335 in) 17.5 mm (0.689 in) Industrial + 90 C - 40 C R-78K-2.0
RECOM Power DC/DC Converters - Through Hole 4.5-36Vin 3.3Vout 2A
Datasheet
1,789In Stock
Min.: 1
Mult.: 1

Non-Isolated 1 Output 3.3 V 2 A SIP-3 11.5 mm (0.453 in) 7.55 mm (0.297 in) 10.2 mm (0.402 in) Industrial + 115 C - 40 C R-78K-2.0
RECOM Power DC/DC Converters - Through Hole 8-36Vin 6.5Vout 500mA
Datasheet
740In Stock
2,752On Order
Min.: 1
Mult.: 1

Non-Isolated 1 Output 6.5 V 500 mA SIP-3 11.5 mm (0.453 in) 7.55 mm (0.297 in) 10.2 mm (0.402 in) Industrial + 115 C - 40 C R-78K-0.5
RECOM Power DC/DC Converters - Through Hole 12-36Vin 9Vout 500mA
Datasheet
2,581In Stock
Min.: 1
Mult.: 1

Non-Isolated 1 Output 9 V 500 mA SIP-3 11.5 mm (0.453 in) 7.55 mm (0.297 in) 10.2 mm (0.402 in) Industrial + 115 C - 40 C R-78K-0.5
RECOM Power DC/DC Converters - Through Hole 12-36Vin 9Vout 1A
Datasheet
832In Stock
Min.: 1
Mult.: 1

Non-Isolated 1 Output 9 V 1 A SIP-3 11.5 mm (0.453 in) 7.55 mm (0.297 in) 10.2 mm (0.402 in) Industrial + 115 C - 40 C R-78K-1.0
RECOM Power DC/DC Converters - Through Hole 11-36Vin 9Vout 2A
Datasheet
337In Stock
Min.: 1
Mult.: 1

Non-Isolated 1 Output 9 V 2 A SIP-3 11.5 mm (0.453 in) 7.55 mm (0.297 in) 10.2 mm (0.402 in) Industrial + 115 C - 40 C R-78K-2.0
RECOM Power DC/DC Converters - Through Hole 2A 11-36Vin 9Vout
Datasheet
724In Stock
Min.: 1
Mult.: 1

Non-Isolated 1 Output 9 V 2 A SIP-3 11.5 mm (0.453 in) 8.5 mm (0.335 in) 17.5 mm (0.689 in) Industrial + 90 C - 40 C R-78K-2.0
RECOM Power DC/DC Converters - Through Hole 2A 4.5-36Vin 1.2Vout
Datasheet
94In Stock
Min.: 1
Mult.: 1

Non-Isolated 1 Output 1.2 V 2 A SIP-3 11.5 mm (0.453 in) 8.5 mm (0.335 in) 17.5 mm (0.689 in) Industrial + 90 C - 40 C R-78K-2.0
RECOM Power DC/DC Converters - Through Hole 4.5-36Vin 1.5Vout 500mA
Datasheet
87In Stock
86Expected 9/18/2026
Min.: 1
Mult.: 1

Non-Isolated 1 Output 1.5 V 500 mA SIP-3 11.5 mm (0.453 in) 7.55 mm (0.297 in) 10.2 mm (0.402 in) Industrial + 115 C - 40 C R-78K-0.5
RECOM Power DC/DC Converters - Through Hole 4.5-36Vin 1.8Vout 500mA
Datasheet
107In Stock
Min.: 1
Mult.: 1

Non-Isolated 1 Output 1.8 V 500 mA SIP-3 11.5 mm (0.453 in) 7.55 mm (0.297 in) 10.2 mm (0.402 in) Industrial + 115 C - 40 C R-78K-0.5
RECOM Power DC/DC Converters - Through Hole 4.5-36Vin 1.8Vout 1A
Datasheet
75In Stock
Min.: 1
Mult.: 1

Non-Isolated 1 Output 1.8 V 1 A SIP-3 11.5 mm (0.453 in) 7.55 mm (0.297 in) 10.2 mm (0.402 in) Industrial + 115 C - 40 C R-78K-1.0
RECOM Power DC/DC Converters - Through Hole 4.5-36Vin 1.8Vout 2A
Datasheet
45In Stock
Min.: 1
Mult.: 1

Non-Isolated 1 Output 1.8 V 2 A SIP-3 11.5 mm (0.453 in) 7.55 mm (0.297 in) 10.2 mm (0.402 in) Industrial + 115 C - 40 C R-78K-2.0
RECOM Power DC/DC Converters - Through Hole 18-36Vin 15Vout 500mA
Datasheet
334In Stock
215Expected 9/25/2026
Min.: 1
Mult.: 1

Non-Isolated 1 Output 15 V 500 mA SIP-3 11.5 mm (0.453 in) 7.55 mm (0.297 in) 10.2 mm (0.402 in) Industrial + 115 C - 40 C R-78K-0.5
RECOM Power DC/DC Converters - Through Hole 18-36Vin 15Vout 1A
Datasheet
327In Stock
Min.: 1
Mult.: 1

Non-Isolated 1 Output 15 V 1 A SIP-3 11.5 mm (0.453 in) 7.55 mm (0.297 in) 10.2 mm (0.402 in) Industrial + 115 C - 40 C R-78K-1.0