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RECOM's R-78K-xx Series DC/DC Switching Regulators

Switching regulators - superior alternative to inefficient linear ones, offer up to 97% efficiency, eliminating the need for heat sinks, saving space and costs. RECOM's regulators integrate seamlessly, with pin-compatible replacements, wide input range, and accurate output voltage regulation, making them a cost-effective choice.

  • R-78K-0.5 Series - Cutting-edge switching regulator with high efficiency, wide input range, and cost-effective production. No heat-sink needed, operates from -40 to 90°C, and saves board space in a compact package.
  • R-78K-1.0 Series - Unleashing high efficiency up to 95%, this switching regulator delivers precision and wide-ranging capabilities. No heat-sink needed, operates from -40 to 90°C with minimal derating, and saves valuable board space in a sleek TO-220 compatible SIP3 package.
  • R-78K-2.0 Series - Elevate your power solutions with up to 96% efficiency, wide input range, and cost-effectiveness. No heat-sink needed, operates seamlessly from -40 to 90°C without derating, and preserves board space in a stylish TO-220 compatible SIP3 package.
  • R-78K-2.0(L) Series - Unmatched performance with fixed output options from 1.2V to 15V, reaching up to 96% efficiency. Horizontal mount for space-critical designs, no heatsink needed, and operating at +110°C max ensures reliability.
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89 Products

    R-78AA3.3-1.0SMD RECOM
    The R-78AA3.3-1.0SMD is an adjustable output, non-isolated buck DC/DC converter in an SMD package, providing a no ...
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    In Stock: 303
    Ships Immediately
    MANUFACTURER STOCK 207
    can ship 6/29/26
    On Order: 132
    can ship 7/6/26

    5
    $10.52
    33
    $9.15
    66
    $8.86
    132
    $8.73
    264
    $8.71
    R-78AA5.0-0.5SMD RECOM
    DC-DC Switching Regulator - 12 to 32VDC Input - 5VDC@0.5A Output - 10 Lead SMD
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    In Stock: 125
    Ships Immediately
    MANUFACTURER STOCK 1000
    can ship 6/29/26

    33
    $7.29
    66
    $7.22
    132
    $7.17
    264
    $7.14
    528
    $7.12
    R-78AA5.0-1.0SMD RECOM
    DC-DC Switching Regulator - 12 to 32VDC Input - 5VDC@1A Output - 10 Lead SMD
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    In Stock: 88
    Ships Immediately
    MANUFACTURER STOCK 207
    can ship 6/29/26

    5
    $10.27
    33
    $9.82
    66
    $9.46
    132
    $9.29
    264
    $9.06
    R-78B12-1.0 RECOM
    DC-DC Switching Regulator - 16 to 32VDC Input - 12VDC@1A Output - LM78xx Pin Compatable
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    MANUFACTURER STOCK 308
    can ship 6/29/26
    On Order: 494
    can ship 7/13/26

    5
    $11.28
    42
    $9.71
    84
    $9.55
    126
    $9.53
    252
    $9.50
    R-78B12-2.0 RECOM
    DC-DC Switching Regulator - 16 to 32VDC Input - 12VDC@2A Output - LM78xx Pin Compatable
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    In Stock: 491
    Ships Immediately
    MANUFACTURER STOCK 1000
    can ship 6/29/26

    5
    $10.61
    42
    $10.38
    84
    $10.28
    126
    $10.26
    252
    $10.23
    R-78B3.3-2.0 RECOM
    DC-DC Switching Regulator - 4.75 to 32VDC Input - 3.3VDC@2A Output - LM78xx Pin Compatable
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    In Stock: 676
    Ships Immediately
    MANUFACTURER STOCK 1000
    can ship 6/29/26
    On Order: 504
    can ship 7/6/26

    5
    $11.77
    42
    $9.83
    84
    $9.72
    126
    $9.68
    252
    $9.63
    R-78B5.0-1.0 RECOM
    The R-78B5.0-1.0 is a high-efficiency switching regulator in a SIP3 package that converts a 6.5V to 32V input to ...
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    In Stock: 415
    Ships Immediately
    MANUFACTURER STOCK 1000
    can ship 6/29/26
    On Order: 420
    can ship 7/6/26

    5
    $10.60
    42
    $8.94
    84
    $8.80
    126
    $8.78
    252
    $8.74
    R-78B5.0-1.0L RECOM
    DC-DC Switching Regulator - 6.5 to 32VDC Input - 5VDC@1A Output - LM78xx Pin Compatable /90° Bend
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    In Stock: 582
    Ships Immediately
    MANUFACTURER STOCK 1000
    can ship 6/29/26
    On Order: 840
    can ship 10/15/26

    5
    $11.01
    42
    $9.50
    84
    $9.33
    126
    $9.31
    252
    $9.29
    R-78B5.0-1.5 RECOM
    DC-DC Switching Regulator - 6.5 to 32VDC Input - 5VDC@1.5A Output - LM78xx Pin Compatable
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    In Stock: 88
    Ships Immediately
    MANUFACTURER STOCK 153
    can ship 6/29/26

    5
    $12.10
    42
    $9.58
    84
    $9.49
    126
    $9.47
    252
    $9.43
    R-78B5.0-1.5L RECOM
    The R-78B5.0-1.5L is a high-efficiency DC/DC switching regulator with 90° pins, providing a 5.0V, 1.5A output fro ...
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    In Stock: 478
    Ships Immediately
    MANUFACTURER STOCK 44
    can ship 6/29/26

    5
    $11.67
    42
    $11.35
    84
    $11.15
    126
    $11.12
    252
    $11.10