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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-78K3.3-1.0 RECOM
    R-78K-1.0 Series Single Output 3.3 V 1 A Non Isolated DC/DC Converter - SIP-3
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    In Stock: 129
    Ships Immediately
    MANUFACTURER STOCK 1000
    can ship 12/5/25

    43
    $4.349
    86
    $4.273
    258
    $4.149
    516
    $4.135
    1,032
    $4.120
    R-78K5.0-1.0 RECOM
    R-78K-1.0 Series Single Output 5 V 1 A Non Isolated DC/DC Converter - SIP-3
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    In Stock: 860
    Ships Immediately
    MANUFACTURER STOCK 1000
    can ship 12/5/25
    On Order: 430
    can ship 12/22/25

    43
    $4.349
    86
    $4.273
    258
    $4.149
    516
    $4.135
    1,032
    $4.120
    R-78K9.0-1.0 RECOM
    R-78K-1.0 Series Single Output 9 V 1 A Non Isolated DC/DC Converter - SIP-3
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    In Stock: 129
    Ships Immediately
    MANUFACTURER STOCK 205
    can ship 12/5/25

    43
    $4.768
    86
    $4.572
    258
    $4.384
    516
    $4.243
    1,032
    $4.184
    R-78K12-2.0 RECOM
    R-78K-2.0 Series Single Output 12 V 2 A Non Isolated DC/DC Converter - SIP-3
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    In Stock: 301
    Ships Immediately
    MANUFACTURER STOCK 1000
    can ship 12/5/25

    43
    $6.585
    86
    $6.463
    129
    $6.324
    258
    $6.263
    516
    $6.232
    R-78K1.5-2.0 RECOM
    Non-Isolated DC/DC Converters 4.5-36Vin 1.5Vout 2A
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    In Stock: 43
    Ships Immediately
    MANUFACTURER STOCK 221
    can ship 12/5/25

    43
    $8.269
    86
    $7.703
    129
    $7.457
    258
    $7.105
    516
    $7.059
    R-78K15-2.0 RECOM
    R-78K-2.0 Series Single Output 15 V 2 A Non Isolated DC/DC Converter - SIP-3
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    In Stock: 167
    Ships Immediately
    MANUFACTURER STOCK 1000
    can ship 12/5/25

    43
    $6.571
    86
    $6.359
    129
    $6.244
    258
    $6.214
    516
    $6.182
    R-78K1.8-2.0 RECOM
    Non-Isolated DC/DC Converters 4.5-36Vin 1.8Vout 2A
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    In Stock: 43
    Ships Immediately
    MANUFACTURER STOCK 194
    can ship 12/5/25

    43
    $5.513
    86
    $5.406
    129
    $5.328
    258
    $5.221
    516
    $5.114
    R-78K2.5-2.0 RECOM
    Non-Isolated DC/DC Converters 4.5-36Vin 2.5Vout 2A
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    In Stock: 43
    Ships Immediately
    MANUFACTURER STOCK 660
    can ship 12/5/25

    43
    $8.300
    86
    $7.703
    129
    $7.457
    258
    $7.105
    516
    $7.059
    R-78K3.3-2.0 RECOM
    R-78K-2.0 Series Single Output 3.3 V 2 A Non Isolated DC/DC Converter - SIP-3
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    In Stock: 172
    Ships Immediately
    MANUFACTURER STOCK 1000
    can ship 12/5/25

    43
    $6.935
    86
    $6.741
    129
    $6.707
    258
    $6.674
    516
    $6.140
    R-78K5.0-2.0 RECOM
    R-78K-2.0 Series Single Output 5 V 2 A Non Isolated DC/DC Converter - SIP-3
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    In Stock: 430
    Ships Immediately
    MANUFACTURER STOCK 1000
    can ship 12/5/25

    43
    $6.570
    86
    $6.356
    129
    $6.247
    258
    $6.217
    516
    $6.186