DC/DC Converters - Through Hole – Mouser United Kingdom

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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: £2.93
486In Stock

Mfr. Part No.
R-78K2.5-1.0

Mouser Part No
919-R-78K2.5-1.0

RECOM Power

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

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Datasheet

486In Stock

£2.93

£2.85

£2.82

£2.55

View

Min.: 1
Mult.: 1

Non-Isolated

1 Output

4.5 V

36 V

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 11-36Vin 9Vout 2A

R-78K9.0-2.0
RECOM Power
1: £4.37
397In Stock

Mfr. Part No.
R-78K9.0-2.0

Mouser Part No
919-R-78K9.0-2.0

RECOM Power

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

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Datasheet

397In Stock

£4.37

£4.29

£4.22

£3.82

View

Min.: 1
Mult.: 1

Non-Isolated

1 Output

4.5 V

36 V

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 4.5-36Vin 3.3Vout 500mA

R-78K3.3-0.5
RECOM Power
1: £2.37
15,424In Stock

Mfr. Part No.
R-78K3.3-0.5

Mouser Part No
919-R-78K3.3-0.5

RECOM Power

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

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Datasheet

15,424In Stock

£2.37

£2.28

£2.24

£1.93

View

Min.: 1
Mult.: 1

Non-Isolated

1 Output

4.5 V

36 V

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: £2.97
7,522In Stock

Mfr. Part No.
R-78K3.3-1.0

Mouser Part No
919-R-78K3.3-1.0

RECOM Power

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

Learn More

Datasheet

7,522In Stock

£2.97

£2.87

£2.82

£2.55

£2.50

Min.: 1
Mult.: 1

Non-Isolated

1 Output

4.5 V

36 V

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: £2.37
18,876In Stock
17,544Expected 04/09/2026

Mfr. Part No.
R-78K5.0-0.5

Mouser Part No
919-R-78K5.0-0.5

RECOM Power

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

Learn More

Datasheet

18,876In Stock

17,544Expected 04/09/2026

£2.37

£2.28

£2.24

£2.05

View

Min.: 1
Mult.: 1

Non-Isolated

1 Output

6.5 V

36 V

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: £2.93
17,004In Stock

Mfr. Part No.
R-78K5.0-1.0

Mouser Part No
919-R-78K5.0-1.0

RECOM Power

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

Learn More

Datasheet

17,004In Stock

£2.93

£2.85

£2.82

£2.49

View

Min.: 1
Mult.: 1

Non-Isolated

1 Output

4.5 V

36 V

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: £4.42
4,558In Stock

Mfr. Part No.
R-78K5.0-2.0

Mouser Part No
919-R-78K5.0-2.0

RECOM Power

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

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Datasheet

4,558In Stock

£4.42

£4.29

£4.22

£3.78

£3.69

Min.: 1
Mult.: 1

Non-Isolated

1 Output

4.5 V

36 V

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: £4.42
4,788In Stock

Mfr. Part No.
R-78K5.0-2.0L

Mouser Part No
919-R-78K5.0-2.0L

RECOM Power

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

Learn More

Datasheet

4,788In Stock

£4.42

£4.29

£4.22

£3.83

View

Min.: 1
Mult.: 1

Non-Isolated

1 Output

4.5 V

36 V

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: £2.37
4,262In Stock

Mfr. Part No.
R-78K12-0.5

Mouser Part No
919-R-78K12-0.5

RECOM Power

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

Learn More

Datasheet

4,262In Stock

£2.37

£2.28

£2.24

£2.03

£2.00

Min.: 1
Mult.: 1

Non-Isolated

1 Output

15 V

36 V

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: £2.97
3,222In Stock

Mfr. Part No.
R-78K12-1.0

Mouser Part No
919-R-78K12-1.0

RECOM Power

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

Learn More

Datasheet

3,222In Stock

£2.97

£2.87

£2.82

£2.51

Min.: 1
Mult.: 1

Non-Isolated

1 Output

15 V

36 V

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: £4.42
1,559In Stock
946Expected 28/08/2026

Mfr. Part No.
R-78K12-2.0

Mouser Part No
919-R-78K12-2.0

RECOM Power

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

Learn More

Datasheet

1,559In Stock

946Expected 28/08/2026

£4.42

£4.29

£4.22

£3.77

£3.68

Min.: 1
Mult.: 1

Non-Isolated

1 Output

14 V

36 V

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: £4.42
1,187In Stock

Mfr. Part No.
R-78K12-2.0L

Mouser Part No
919-R-78K12-2.0L

RECOM Power

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

Learn More

Datasheet

1,187In Stock

£4.42

£4.29

£4.22

£3.77

£3.68

Min.: 1
Mult.: 1

Non-Isolated

1 Output

14 V

36 V

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: £4.42
411In Stock

Mfr. Part No.
R-78K15-2.0L

Mouser Part No
919-R-78K15-2.0L

RECOM Power

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

Learn More

Datasheet

411In Stock

£4.42

£4.29

£4.22

£3.77

View

Min.: 1
Mult.: 1

Non-Isolated

1 Output

18 V

36 V

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: £4.54
1,827In Stock

Mfr. Part No.
R-78K3.3-2.0

Mouser Part No
919-R-78K3.3-2.0

RECOM Power

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

Learn More

Datasheet

1,827In Stock

£4.54

£4.37

£4.31

£3.78

£3.73

Min.: 1
Mult.: 1

Non-Isolated

1 Output

4.5 V

36 V

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 2A 4.5-36Vin 3.3Vout

R-78K3.3-2.0L
RECOM Power
1: £4.42
320In Stock
387Expected 18/09/2026

Mfr. Part No.
R-78K3.3-2.0L

Mouser Part No
919-R-78K3.3-2.0L

RECOM Power

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

Learn More

Datasheet

320In Stock

387Expected 18/09/2026

£4.42

£4.29

£4.22

£3.95

View

Min.: 1
Mult.: 1

Non-Isolated

1 Output

4.5 V

36 V

3.3 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 8-36Vin 6.5Vout 500mA

R-78K6.5-0.5
RECOM Power
1: £2.37
2,365In Stock

Mfr. Part No.
R-78K6.5-0.5

Mouser Part No
919-R-78K6.5-0.5

RECOM Power

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

Learn More

Datasheet

2,365In Stock

£2.37

£2.28

£2.24

£2.07

View

Min.: 1
Mult.: 1

Non-Isolated

1 Output

8 V

36 V

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: £2.37
2,607In Stock

Mfr. Part No.
R-78K9.0-0.5

Mouser Part No
919-R-78K9.0-0.5

RECOM Power

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

Learn More

Datasheet

2,607In Stock

£2.37

£2.28

£2.24

£2.17

View

Min.: 1
Mult.: 1

Non-Isolated

1 Output

12 V

36 V

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: £2.97
852In Stock

Mfr. Part No.
R-78K9.0-1.0

Mouser Part No
919-R-78K9.0-1.0

RECOM Power

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

Learn More

Datasheet

852In Stock

£2.97

£2.87

£2.82

£2.60

View

Min.: 1
Mult.: 1

Non-Isolated

1 Output

12 V

36 V

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 2A 11-36Vin 9Vout

R-78K9.0-2.0L
RECOM Power
1: £4.42
725In Stock

Mfr. Part No.
R-78K9.0-2.0L

Mouser Part No
919-R-78K9.0-2.0L

RECOM Power

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

Learn More

Datasheet

725In Stock

£4.42

£4.29

£4.22

£4.03

View

Min.: 1
Mult.: 1

Non-Isolated

1 Output

11 V

36 V

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: £4.42
94In Stock

Mfr. Part No.
R-78K1.2-2.0L

Mouser Part No
919-R-78K1.2-2.0L

RECOM Power

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

Learn More

Datasheet

94In Stock

£4.42

£4.29

£4.22

£3.99

View

Min.: 1
Mult.: 1

Non-Isolated

1 Output

4.5 V

36 V

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: £2.37
87In Stock
86Expected 18/09/2026

Mfr. Part No.
R-78K1.5-0.5

Mouser Part No
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 18/09/2026

£2.37

£2.28

£2.24

£2.17

View

Min.: 1
Mult.: 1

Non-Isolated

1 Output

4.5 V

36 V

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: £2.37
107In Stock

Mfr. Part No.
R-78K1.8-0.5

Mouser Part No
919-R-78K1.8-0.5

RECOM Power

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

Learn More

Datasheet

107In Stock

£2.37

£2.28

£2.24

£2.22

View

Min.: 1
Mult.: 1

Non-Isolated

1 Output

4.5 V

36 V

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: £2.97
77In Stock

Mfr. Part No.
R-78K1.8-1.0

Mouser Part No
919-R-78K1.8-1.0

RECOM Power

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

Learn More

Datasheet

77In Stock

£2.97

£2.87

£2.82

£2.76

View

Min.: 1
Mult.: 1

Non-Isolated

1 Output

4.5 V

36 V

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: £4.42
45In Stock

Mfr. Part No.
R-78K1.8-2.0

Mouser Part No
919-R-78K1.8-2.0

RECOM Power

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

Learn More

Datasheet

45In Stock

£4.42

£4.29

£4.22

£4.03

View

Min.: 1
Mult.: 1

Non-Isolated

1 Output

4.5 V

36 V

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: £2.37
384In Stock

Mfr. Part No.
R-78K15-0.5

Mouser Part No
919-R-78K15-0.5

RECOM Power

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

Learn More

Datasheet

384In Stock

£2.37

£2.28

£2.24

£1.98

View

Min.: 1
Mult.: 1

Non-Isolated

1 Output

4.5 V

36 V

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

R-78K DC/DC Converters

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