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Device Package: TO-270BB
(2 related parts in total)
- The TO-270BB, also known as the TO-3P(N), is a widely recognized and robust through-hole power semiconductor package. It holds a respected position in the industry as a workhorse for medium-to-high power applications, prized for its excellent thermal and electrical performance.
- This package features a distinctive, rugged black plastic body with a large, integral metal tab for heatsinking. It typically has three leads (collector, base, emitter for transistors) with a standard lead pitch. It is designed for through-hole mounting, where the metal tab is mechanically fastened to an external heatsink, often with an insulating washer.
- Engineers select the TO-270BB for its superior thermal dissipation capability compared to smaller plastic packages. Its robust construction handles high currents and power levels reliably, making it ideal for applications where durability and heat management are critical.
- Typical ICs housed in this package include power transistors, IGBTs, and high-current voltage regulators. It is commonly found in end-products like power supplies, motor drives, audio amplifiers, and industrial control systems.
- For PCB layout, ensure adequate creepage and clearance distances due to high voltages. The mounting hole for the tab must be properly sized and insulated. Soldering requires sufficient heat due to the large thermal mass of the leads and tab, but the through-hole design is generally straightforward.
- Compared to the similar TO-247 package, the TO-270BB is slightly larger with a more robust tab, offering marginally better thermal performance but requiring more board space. The TO-247 is often chosen for a more compact design where the highest power levels are not required.
| Mfr.Part# | Description | Manufacturer | In Stock | Operation |
|---|---|---|---|---|
| MRFE6VP5150GNR1,528 | RF Mosfet 50 V 100 mA 1.8MHz ~ 600MHz 26.1dB 150W TO-270 WB-4 Gull | NXP Semiconductor | 9,277 | Add to BOM |
| MRF8P9040GNR1 | MOSFET transistor designed for high frequency RF applications | NXP Semiconductor | 9,544 | Add to BOM |
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