2SA1774TLR

2SA1774TLR is a PNP silicon bipolar transistor from the 2SA family (Japanese part numbering). It’s used as a general-purpose small-to-medium signal transistor for amplification and switching in audio, regulator circuits, and driver stages. The “TLR” suffix denotes a specific package/lead configuration variant (often RoHS-compliant) from certain manufacturers; the device type (PNP, BJT) remains the same. For exact electricals—Vce, Ic, current gain (hFE), power rating, and pinout—consult the datasheet for the TL R variant from your supplier, since ratings can vary by manufacturer. If replacing, match the PNP polarity and ensure similar voltage/current ratings and package compatibility; otherwise, choose an equivalent 2SA device with matching specs. In short: a PNP BJT used for general-purpose amplification and switching in small to medium power circuits; verify specifics in the datasheet.

2SA1774TLR features (concise):
- PNP silicon power transistor (2SA family)
- Tape & Reel (TLR) packaging for automated assembly
- High voltage and high current capable device, suitable for power amplification and switching
- Planar epitaxial construction for reliability and thermal stability
- Typically used in power amplifier stages, voltage regulators, and switching power supplies
- Complementary to 2SC-series NPN devices for push-pull or class-AB stages
- Needs proper heatsinking and biasing for best performance
Note: For exact electrical specs (Vceo, Ic, hFE, Pd, etc.), please refer to the specific datasheet for the TL/R version.

Three pins. It is a PNP bipolar junction transistor (2SA family) used for general-purpose amplification or switching in analog circuits. (Pinout varies by package; 2SA1774TLR is the PNP type.)

Manufacturer: Toshiba (Toshiba Corporation), specifically its semiconductor division (Toshiba Electronic Devices & Storage Corporation).
What kind of company: A Japanese multinational electronics and electrical equipment company, one of the world’s major manufacturers of semiconductors and electronic components.

2SA1774TLR is a PNP power transistor (Tape & Reel packaging). Common applications include:
- Audio power amplifier stages (driver/output)
- Linear regulator pass elements and voltage regulator circuits
- High-side switching in DC-DC converters and switching regulators
- General-purpose power-transistor use in consumer electronics and power-management circuits

TO-92 through-hole package; TLR indicates a RoHS lead-free variant.