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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
    DC-DC Switching Regulator - 12 to 32VDC Input - 3.3VDC@1A Output - 10 Lead SMD
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    In Stock: 107
    Can Ship immediately 
    MANUFACTURER STOCK 837
    can ship 12/1/25

    5
    $10.26
    33
    $8.83
    66
    $8.60
    132
    $8.48
    264
    $8.44
    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: 109
    Can Ship immediately 
    MANUFACTURER STOCK 1000
    can ship 12/1/25

    5
    $8.85
    33
    $7.90
    66
    $7.51
    132
    $7.27
    264
    $7.23
    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: 86
    Can Ship immediately 
    MANUFACTURER STOCK 1000
    can ship 12/1/25

    5
    $16.36
    33
    $10.52
    66
    $10.09
    132
    $9.62
    264
    $9.49
    R-78B12-1.0 RECOM
    DC-DC Switching Regulator - 16 to 32VDC Input - 12VDC@1A Output - LM78xx Pin Compatable
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    In Stock: 247
    Can Ship immediately 
    MANUFACTURER STOCK 476
    can ship 12/1/25

    5
    $10.92
    42
    $9.78
    84
    $9.48
    126
    $9.44
    252
    $9.39
    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: 755
    Can Ship immediately 
    MANUFACTURER STOCK 1000
    can ship 12/1/25

    5
    $10.28
    42
    $10.03
    84
    $9.98
    126
    $9.93
    252
    $9.88
    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: 770
    Can Ship immediately 
    MANUFACTURER STOCK 1000
    can ship 12/1/25

    5
    $10.28
    42
    $10.03
    84
    $9.98
    126
    $9.93
    252
    $9.88
    R-78B5.0-1.0 RECOM
    DC-DC Switching Regulator - 6.5 to 32VDC Input - 5VDC@1A Output - LM78xx Pin Compatable
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    In Stock: 585
    Can Ship immediately 
    MANUFACTURER STOCK 1000
    can ship 12/1/25

    5
    $10.44
    42
    $8.89
    84
    $8.65
    126
    $8.53
    252
    $8.48
    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: 703
    Can Ship immediately 
    MANUFACTURER STOCK 1000
    can ship 12/1/25

    5
    $10.92
    42
    $9.18
    84
    $9.06
    126
    $9.02
    252
    $8.97
    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: 121
    Can Ship immediately 
    MANUFACTURER STOCK 1000
    can ship 12/1/25

    5
    $10.82
    42
    $10.50
    84
    $10.36
    126
    $10.31
    252
    $10.26
    R-78B5.0-1.5L RECOM
    DC-DC Switching Regulator - 6.5 to 32VDC Input - 5VDC@1.5A Output - LM78xx Pin Compatable /90° Bend
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    In Stock: 183
    Can Ship immediately 
    MANUFACTURER STOCK 1000
    can ship 12/1/25

    5
    $11.87
    42
    $10.79
    84
    $10.03
    126
    $9.98
    252
    $9.93