DC/DC Converters - Through Hole

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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 4.5V_DC to 36V_DC 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.

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Part #

DC/DC Converters - Through Hole 4.5-36Vin 2.5Vout 1A

R-78K2.5-1.0
RECOM Power
1: S/15.22
471In Stock

Mfr. Part #
R-78K2.5-1.0

Mouser Part #
919-R-78K2.5-1.0

RECOM Power

DC/DC Converters - Through Hole 4.5-36Vin 2.5Vout 1A

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Datasheet

471In Stock

S/15.22

S/14.79

S/14.60

S/12.92

View

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

DC/DC Converters - Through Hole 4.5-36Vin 3.3Vout 500mA

R-78K3.3-0.5
RECOM Power
1: S/12.26
13,640In Stock

Mfr. Part #
R-78K3.3-0.5

Mouser Part #
919-R-78K3.3-0.5

RECOM Power

DC/DC Converters - Through Hole 4.5-36Vin 3.3Vout 500mA

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Datasheet

13,640In Stock

S/12.26

S/11.83

S/11.64

S/10.43

View

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

DC/DC Converters - Through Hole 4.5-36Vin 3.3Vout 1A

R-78K3.3-1.0
RECOM Power
1: S/15.38
7,291In Stock

Mfr. Part #
R-78K3.3-1.0

Mouser Part #
919-R-78K3.3-1.0

RECOM Power

DC/DC Converters - Through Hole 4.5-36Vin 3.3Vout 1A

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Datasheet

7,291In Stock

S/15.38

S/14.87

S/14.64

S/13.58

View

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

DC/DC Converters - Through Hole 6.5-36Vin 5Vout 500mA

R-78K5.0-0.5
RECOM Power
1: S/12.26
17,447In Stock
17,544Expected 10/12/2026

Mfr. Part #
R-78K5.0-0.5

Mouser Part #
919-R-78K5.0-0.5

RECOM Power

DC/DC Converters - Through Hole 6.5-36Vin 5Vout 500mA

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Datasheet

17,447In Stock

17,544Expected 10/12/2026

S/12.26

S/11.83

S/11.64

S/10.82

View

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

DC/DC Converters - Through Hole 6.5-36Vin 5Vout 1A

R-78K5.0-1.0
RECOM Power
1: S/15.38
16,168In Stock

Mfr. Part #
R-78K5.0-1.0

Mouser Part #
919-R-78K5.0-1.0

RECOM Power

DC/DC Converters - Through Hole 6.5-36Vin 5Vout 1A

Learn More

Datasheet

16,168In Stock

S/15.38

S/14.87

S/14.64

S/13.31

View

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

DC/DC Converters - Through Hole 6.5-36Vin 5Vout 2A

R-78K5.0-2.0
RECOM Power
1: S/22.89
4,500In Stock

Mfr. Part #
R-78K5.0-2.0

Mouser Part #
919-R-78K5.0-2.0

RECOM Power

DC/DC Converters - Through Hole 6.5-36Vin 5Vout 2A

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Datasheet

4,500In Stock

S/22.89

S/22.23

S/21.88

S/20.67

View

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

DC/DC Converters - Through Hole 2A 6.5-36Vin 5Vout

R-78K5.0-2.0L
RECOM Power
1: S/22.89
4,644In Stock

Mfr. Part #
R-78K5.0-2.0L

Mouser Part #
919-R-78K5.0-2.0L

RECOM Power

DC/DC Converters - Through Hole 2A 6.5-36Vin 5Vout

Learn More

Datasheet

4,644In Stock

S/22.89

S/22.23

S/21.88

S/20.32

S/20.20

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

DC/DC Converters - Through Hole 15-36Vin 12Vout 500mA

R-78K12-0.5
RECOM Power
1: S/12.26
4,074In Stock

Mfr. Part #
R-78K12-0.5

Mouser Part #
919-R-78K12-0.5

RECOM Power

DC/DC Converters - Through Hole 15-36Vin 12Vout 500mA

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Datasheet

4,074In Stock

S/12.26

S/11.83

S/11.64

S/10.67

S/10.47

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

DC/DC Converters - Through Hole 15-36Vin 12Vout 1A

R-78K12-1.0
RECOM Power
1: S/15.38
2,811In Stock

Mfr. Part #
R-78K12-1.0

Mouser Part #
919-R-78K12-1.0

RECOM Power

DC/DC Converters - Through Hole 15-36Vin 12Vout 1A

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Datasheet

2,811In Stock

S/15.38

S/14.87

S/14.64

S/13.55

S/13.23

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

DC/DC Converters - Through Hole 14-36Vin 12Vout 2A

R-78K12-2.0
RECOM Power
1: S/22.89
1,533In Stock
946Expected 10/6/2026

Mfr. Part #
R-78K12-2.0

Mouser Part #
919-R-78K12-2.0

RECOM Power

DC/DC Converters - Through Hole 14-36Vin 12Vout 2A

Learn More

Datasheet

1,533In Stock

946Expected 10/6/2026

S/22.89

S/22.23

S/21.88

S/19.58

View

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

DC/DC Converters - Through Hole 2A 14-36Vin 12Vout

R-78K12-2.0L
RECOM Power
1: S/22.89
1,142In Stock

Mfr. Part #
R-78K12-2.0L

Mouser Part #
919-R-78K12-2.0L

RECOM Power

DC/DC Converters - Through Hole 2A 14-36Vin 12Vout

Learn More

Datasheet

1,142In Stock

S/22.89

S/22.23

S/21.88

S/19.54

S/19.23

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

DC/DC Converters - Through Hole 2A 18-36Vin 15Vout

R-78K15-2.0L
RECOM Power
1: S/22.89
410In Stock

Mfr. Part #
R-78K15-2.0L

Mouser Part #
919-R-78K15-2.0L

RECOM Power

DC/DC Converters - Through Hole 2A 18-36Vin 15Vout

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Datasheet

410In Stock

S/22.89

S/22.23

S/21.88

S/20.75

View

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

DC/DC Converters - Through Hole 4.5-36Vin 3.3Vout 2A

R-78K3.3-2.0
RECOM Power
1: S/23.55
1,732In Stock

Mfr. Part #
R-78K3.3-2.0

Mouser Part #
919-R-78K3.3-2.0

RECOM Power

DC/DC Converters - Through Hole 4.5-36Vin 3.3Vout 2A

Learn More

Datasheet

1,732In Stock

S/23.55

S/22.69

S/22.34

S/21.06

View

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

DC/DC Converters - Through Hole 8-36Vin 6.5Vout 500mA

R-78K6.5-0.5
RECOM Power
1: S/12.26
735In Stock
2,752On Order

Mfr. Part #
R-78K6.5-0.5

Mouser Part #
919-R-78K6.5-0.5

RECOM Power

DC/DC Converters - Through Hole 8-36Vin 6.5Vout 500mA

Learn More

Datasheet

735In Stock

2,752On Order

S/12.26

S/11.83

S/11.64

S/11.05

View

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

DC/DC Converters - Through Hole 12-36Vin 9Vout 500mA

R-78K9.0-0.5
RECOM Power
1: S/12.26
2,571In Stock

Mfr. Part #
R-78K9.0-0.5

Mouser Part #
919-R-78K9.0-0.5

RECOM Power

DC/DC Converters - Through Hole 12-36Vin 9Vout 500mA

Learn More

Datasheet

2,571In Stock

S/12.26

S/11.83

S/11.64

S/10.86

View

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

DC/DC Converters - Through Hole 12-36Vin 9Vout 1A

R-78K9.0-1.0
RECOM Power
1: S/15.38
832In Stock

Mfr. Part #
R-78K9.0-1.0

Mouser Part #
919-R-78K9.0-1.0

RECOM Power

DC/DC Converters - Through Hole 12-36Vin 9Vout 1A

Learn More

Datasheet

832In Stock

S/15.38

S/14.87

S/14.64

S/13.51

View

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

DC/DC Converters - Through Hole 11-36Vin 9Vout 2A

R-78K9.0-2.0
RECOM Power
1: S/22.65
317In Stock

Mfr. Part #
R-78K9.0-2.0

Mouser Part #
919-R-78K9.0-2.0

RECOM Power

DC/DC Converters - Through Hole 11-36Vin 9Vout 2A

Learn More

Datasheet

317In Stock

S/22.65

S/22.23

S/21.88

S/20.16

View

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

DC/DC Converters - Through Hole 2A 11-36Vin 9Vout

R-78K9.0-2.0L
RECOM Power
1: S/22.89
724In Stock

Mfr. Part #
R-78K9.0-2.0L

Mouser Part #
919-R-78K9.0-2.0L

RECOM Power

DC/DC Converters - Through Hole 2A 11-36Vin 9Vout

Learn More

Datasheet

724In Stock

S/22.89

S/22.23

S/21.88

S/21.02

View

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

DC/DC Converters - Through Hole 2A 4.5-36Vin 1.2Vout

R-78K1.2-2.0L
RECOM Power
1: S/22.89
94In Stock

Mfr. Part #
R-78K1.2-2.0L

Mouser Part #
919-R-78K1.2-2.0L

RECOM Power

DC/DC Converters - Through Hole 2A 4.5-36Vin 1.2Vout

Learn More

Datasheet

94In Stock

S/22.89

S/22.23

S/21.88

S/20.75

S/18.10

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

DC/DC Converters - Through Hole 4.5-36Vin 1.5Vout 500mA

R-78K1.5-0.5
RECOM Power
1: S/12.26
87In Stock
86Expected 10/23/2026

Mfr. Part #
R-78K1.5-0.5

Mouser Part #
919-R-78K1.5-0.5

RECOM Power

DC/DC Converters - Through Hole 4.5-36Vin 1.5Vout 500mA

Learn More

Datasheet

87In Stock

86Expected 10/23/2026

S/12.26

S/11.83

S/11.64

S/11.29

View

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

DC/DC Converters - Through Hole 4.5-36Vin 1.8Vout 500mA

R-78K1.8-0.5
RECOM Power
1: S/12.26
107In Stock

Mfr. Part #
R-78K1.8-0.5

Mouser Part #
919-R-78K1.8-0.5

RECOM Power

DC/DC Converters - Through Hole 4.5-36Vin 1.8Vout 500mA

Learn More

Datasheet

107In Stock

S/12.26

S/11.83

S/11.64

S/11.48

View

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

DC/DC Converters - Through Hole 4.5-36Vin 1.8Vout 1A

R-78K1.8-1.0
RECOM Power
1: S/15.38
75In Stock

Mfr. Part #
R-78K1.8-1.0

Mouser Part #
919-R-78K1.8-1.0

RECOM Power

DC/DC Converters - Through Hole 4.5-36Vin 1.8Vout 1A

Learn More

Datasheet

75In Stock

S/15.38

S/14.87

S/14.64

S/14.36

View

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

DC/DC Converters - Through Hole 4.5-36Vin 1.8Vout 2A

R-78K1.8-2.0
RECOM Power
1: S/22.89
45In Stock

Mfr. Part #
R-78K1.8-2.0

Mouser Part #
919-R-78K1.8-2.0

RECOM Power

DC/DC Converters - Through Hole 4.5-36Vin 1.8Vout 2A

Learn More

Datasheet

45In Stock

S/22.89

S/22.23

S/21.88

S/20.90

View

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

DC/DC Converters - Through Hole 18-36Vin 15Vout 500mA

R-78K15-0.5
RECOM Power
1: S/12.26
334In Stock
215Expected 9/25/2026

Mfr. Part #
R-78K15-0.5

Mouser Part #
919-R-78K15-0.5

RECOM Power

DC/DC Converters - Through Hole 18-36Vin 15Vout 500mA

Learn More

Datasheet

334In Stock

215Expected 9/25/2026

S/12.26

S/11.83

S/11.64

S/10.43

View

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

DC/DC Converters - Through Hole 18-36Vin 15Vout 1A

R-78K15-1.0
RECOM Power
1: S/15.38
327In Stock

Mfr. Part #
R-78K15-1.0

Mouser Part #
919-R-78K15-1.0

RECOM Power

DC/DC Converters - Through Hole 18-36Vin 15Vout 1A

Learn More

Datasheet

327In Stock

S/15.38

S/14.87

S/14.64

S/13.66

View

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

R-78K DC/DC Converters

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