2SC5508-T2B-A

2SC5508-T2B-A is a small-signal NPN silicon transistor in a surface-mount (T2B‑A) package. It belongs to the 2SC family and is intended for RF/high-frequency amplification and switching.
Key points:
- Type: NPN BJT for RF/small-signal use
- Package: SMD variant designated by T2B‑A (specific footprint and RoHS status depend on the manufacturer)
- Performance: designed for high frequency operation (high ft) suitable for RF front‑ends; provides gain with low noise in the VHF/UHF region
- Applications: RF amplifiers, buffer stages, mixers and downconverters, VCO/PLL front-ends in wireless gear
Important: exact electrical specs (Vce, Ic, hFE, ft), power dissipation, and package outline must be taken from the supplier’s datasheet for 2SC5508‑T2B‑A. If you’d like, I can help locate the current datasheet and pull the specific figures.

There’s no widely published direct cross‑reference for 2SC5508‑T2B‑A. Common substitutes to consider (verify specs and pinout before use): BC550(C) (low‑noise NPN), 2N3904/MMBT3904 (general‑purpose NPN), and 2SC3356 (low‑noise small‑signal NPN). Always compare Vce, Ic(max), hFE, noise, fT and package/pinout against the 2SC5508 datasheet before substituting.

2SC5508-T2B-A features:
- NPN silicon transistor in T2B-A package
- High-speed switching suitable for drivers and switching regulators
- Low Vce(sat) for efficient operation
- High DC current gain
- Capable of handling moderate Ic and Vce ratings (verify exact values on datasheet)
- Wide operating temperature range
- Tape-and-reel packaging for automatic insertion (RoHS-compliant variant)
Note: exact voltage/current ratings and hFE vary by lot; please consult the datasheet for precise specs.

Pin count: 3 (SOT‑23 package).
Function: NPN small‑signal bipolar transistor for amplification/switching. Typical SOT‑23 pin assignment (confirm with the manufacturer datasheet) is: pin 1 = Base, pin 2 = Emitter, pin 3 = Collector.

Manufacturer: Toshiba (Toshiba Electronic Devices & Storage Corporation), a Japanese multinational electronics and semiconductor company.
What kind of company: A leading global manufacturer of electronic components and devices, including transistors, diodes, ICs, memory, and other semiconductor products.

2SC5508-T2B-A is a general-purpose NPN transistor. Common application areas include:
- RF small-signal amplification (VHF/UHF front-end)
- Mixer/oscillator stages in communications receivers
- IF/detector amplifier stages
- Switching/driver roles in consumer electronics (mobile/cordless phones, remotes, set-top boxes)
- General purpose small-signal amplification in audio/video equipment
Note: Check the datasheet for exact electrical specs and the available package (T2B-A) to ensure suitability for your design.

TO-92 style, three-lead plastic package (through-hole).