开关稳压器是效率高达97%的高功率密度紧凑型稳压器。R78系列是替代78xx系列线性稳压器的3引脚THT产品，也是我们最受欢迎的产品之一。由于可以直接替代TO-220稳压器，因此在不需重新设计电路或安装散热器的情况下，传统电源板的效率可以从大约60%提升到90%以上。有线版本是专为提供本地稳压电源和短路保护设计的，无需任何外部组件或电路板。
SIP Switching Regulators
0.1–5A
| 系列 | 电流(A) | 输入电压（V） | 主输出电压（V） | 安装类型 | 封装类型 | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1 |
|
R-78HE-0.3
重点
| 0.3 | 6.5 - 72 | 5 | THT | SIP3 | |||
| 2 |
|
R-78CK-0.5
重点
| 0.5 | 5 - 40, 6.5 - 40, 15 - 40, 18 - 40 | 12, 15, 3.3, 5 | THT | SIP3 | |||
| 3 |
|
R-78K-0.5
重点
| 0.5 | 4.5 - 36, 6.5 - 36, 8 - 36, 12 - 36, 15 - 36, 18 - 36 | 1.5, 1.8, 12, 15, 2.5, 3.3, 5, 6.5, 9 | THT | SIP3 | |||
| 4 |
|
R-78K-1.0
重点
| 1 | 4.5 - 36, 6.5 - 36, 12 - 36, 15 - 36, 18 - 36 | 1.8, 12, 15, 2.5, 3.3, 5, 9 | THT | SIP3 | |||
| 5 |
|
R-78K-2.0
重点
| 2 | 4.5 - 36, 6.5 - 36, 11 - 36, 14 - 36, 18 - 36 | 1.2, 1.5, 1.8, 12, 15, 2.5, 3.3, 5, 9 | THT | SIP3 | |||
| 6 |
|
R-78S-0.1
| 0.1 | 0.65 - 1.3, 0.65 - 3.15, 0.65 - 3.3 | 1.8, 3.3, 3.6 | THT | SIP4 | |||
| 7 |
|
R-78HB-0.3
| 0.3 | 36 - 72 | 24 | THT | SIP3 | |||
| 8 |
|
R-78-0.5
| 0.5 | 4.75 - 30, 4.75 - 32, 6.5 - 32, 8 - 32, 11 - 32, 15 - 32, 18 - 32 | 1.5, 1.8, 12, 15, 2.5, 3.3, 5, 6.5, 9 | THT | SIP3 | |||
| 9 |
|
R-78E-0.5
| 0.5 | 6 - 28, 7 - 28, 12 - 28, 15 - 28, 18 - 28 | 12, 15, 3.3, 5, 9 | THT | SIP3 | |||
| 10 |
|
R-78HB-0.5
| 0.5 | 9 - 72, 14 - 72, 17 - 72, 20 - 72 | 12, 15, 3.3, 5, 6.5, 9 | THT | SIP3 | |||
| 11 |
|
R-6
| 1, 2 | 9 - 32, 11 - 32, 14 - 32 | 1.5 ‐ 3.6, 1.5 ‐ 4.5, 1.8 ‐ 6, 1.8 ‐ 9, 3.3 ‐ 15 | THT | SIP12 | |||
| 12 |
|
R-78-1.0
| 1 | 4.75 - 18, 6.5 - 18 | 1.8, 2.5, 3.3, 5 | THT | SIP3 | |||
| 13 |
|
R-78B-1.0
| 1 | 4.75 - 26, 4.75 - 32, 6.5 - 32, 9 - 32, 12 - 32, 16 - 32, 20 - 32 | 1.5, 1.8, 12, 15, 2.5, 3.3, 5, 6.5, 9 | THT | SIP3 | |||
| 14 |
|
R-78C-1.0
| 1 | 5 - 42, 7 - 42, 8 - 42, 12 - 42, 15 - 42, 18 - 42 | 1.8, 12, 15, 3.3, 5, 9 | THT | SIP3 | |||
| 15 |
|
R-78E-1.0
| 1 | 7 - 28, 8 - 28, 15 - 27 | 12, 3.3, 5 | THT | SIP3 | |||
| 16 |
|
R-78B-1.5
| 1.5 | 4.75 - 18, 6.5 - 18, 8 - 18 | 3.3, 5, 6.5 | THT | SIP3 | |||
| 17 |
|
R-7
| 2, 3, 4 | 4.5 - 28, 6.5 - 28, 8.5 - 28, 12 - 28, 15 - 28, 19 - 28 | 10 ‐ 14, 13 ‐ 17, 2.5 ‐ 5.5, 3 ‐ 5.5, 5 ‐ 7.5, 5 ‐ 8, 7 ‐ 11 | THT | SIP12 | |||
| 18 |
|
R-78B-2.0
| 2 | 4.75 - 32, 6.5 - 32, 11 - 32, 15 - 32, 18 - 32 | 1.2, 1.5, 1.8, 12, 15, 2.5, 3.3, 5, 9 | THT | SIP3 |
Frequently Asked Questions
SIP switching regulators are engineered for specialists requiring efficient, non-isolated voltage conversion in space-constrained through-hole designs. Primarily deployed in industrial controls, embedded systems, and battery-powered electronics, they are essential where minimizing thermal output and maximizing system efficiency are paramount. Their single-in-line format ensures seamless integration into both dense legacy and modern PCB layouts.
The primary advantage is efficiency. While linear regulators dissipate excess voltage as heat—often requiring large, expensive heatsinks—switching regulators convert the voltage with up to 97% efficiency. This drastically reduces thermal output, eliminates the need for heatsinks, and extends the life of surrounding components.
No, SIP switching regulators are non-isolated (the input and output share a common ground). They are intended for point-of-load (POL) conversion where galvanic isolation is not required. If your application requires protection from high-voltage transients or a separate ground, you should consider RECOM’s isolated DC/DC converters.
Yes, many SIP buck regulators are specifically engineered as pin-compatible upgrades for standard 78xx linear regulators. This allows specialists to enhance efficiency and modernize existing systems with minimal redesign overhead, leveraging drop-in compatible formats to accelerate development cycles.