FMMT624TA

FMMT624TA is a small‑signal transistor in the SOT‑23 package from the FMMT family (Fairchild/ON Semi). It’s intended for general‑purpose switching and low‑level amplification in compact, low‑power circuits. The “TA” suffix usually denotes a packaging/lot option (for example Tape & Reel) and RoHS/compliance details—check the exact datasheet for your supplier. The device exists in a polarity (NPN or PNP) variant; confirm which one you’re using and reference the pinout in the datasheet, as it varies by type. Typical uses include LED driving, level shifting, and small signal amplification in microcontroller or sensor interfaces. In operation, bias the base through a resistor, and connect emitter and collector according to the polarity and load. For exact electrical specs (Vceo, Ic, hFE, max power), always consult the specific FMMT624TA datasheet from the vendor.

FMMT624TA features (concise):
- Type: General-purpose NPN small-signal transistor
- Package: SOT-23, Tape and Reel (TA)
- Vce: 40 V
- Ic: up to about 200 mA
- Gain (hFE): typically high (about 100–300, varies with Ic)
- Saturation: low Vce(sat) at small to moderate Ic
- Temperature range: –55 °C to +150 °C
- Other: Pb-free, suitable for switching and amplification applications
Note: exact values (hFE band, Vce(sat), etc.) vary with operating conditions; refer to the datasheet for precise numbers.

- Pin count: 3 pins
- Function: Small-signal NPN transistor (general-purpose) in a SOT-23 package, used for switching and amplification.

- Manufacturer: ON Semiconductor (ON Semiconductor Corporation). The FMMT624TA is one of the small-signal transistors in their FMMT series; the brand comes from Fairchild Semiconductor, which ON Semiconductor acquired.
- What kind of company: ON Semiconductor is an American multinational semiconductor manufacturer that designs, manufactures, and sells a broad range of semiconductor components (transistors, diodes, ICs, sensors, power management, etc.) for various markets.

FMMT624TA is a small-signal NPN transistor in an SOT-23 package. Common applications:
- General-purpose switching and amplification in low-power, surface-mount circuits
- Signal conditioning for sensors and instrumentation
- Microcontroller I/O interfacing and level shifting
- Small-signal amplifier stages and audio preamps
- Biasing networks and driver stages for LEDs/relays in compact PCBs
- Consumer electronics and portable devices requiring a compact NPN transistor.

SOT-23 (3-pin) surface-mount package.