BC847C-QR

BC847C-QR is a general‑purpose NPN transistor in a SOT‑23 package. The “C” grade means high current gain (hFE typically about 420–800), suitable for modest amplification.
Key specs (typical): Vceo ~ 45 V, Ic up to 100 mA, low noise. The “QR” suffix denotes RoHS compliance with a standard tape‑and‑reel/SOT‑23 form; check the datasheet for exact packaging.
Pinout (SOT‑23, top view): pin 1 Emitter, pin 2 Base, pin 3 Collector (E–B–C).
Applications: general switching and signal amplification in consumer electronics, automotive, and other low‑power circuits.
Design notes: bias with a base resistor; for linear gain use Ib ≈ Ic/hFE. For saturation in switching, Ib ≈ Ic/10. Consider temperature derating.
Alternatives: BC847A/B/C (different gain ranges) or similar small‑signal NPN transistors (e.g., 2N3904) if the exact package or gain differs. Check the official datasheet for precise numbers.

Equivalents: BC847C-QR is the SOT-23 NPN transistor. Cross-refs include BC847C/B/A; BC846C/B/A (same family, similar specs); MMBT3904 (SMD version of 2N3904); and 2N3904 (through-hole if packaging allows).

BC847C-QR is a general‑purpose NPN transistor in SOT-23 with Tape & Reel (QR) packaging. Key features:
- NPN, general‑purpose switching/amplification
- SOT‑23 package; QR = tape & reel RoHS‑compliant
- Vceo: 45 V; Icmax: 100 mA
- High gain (hFE): ~420–800 (C‑grade) at Ic ≈ 2 mA
- Ft: typically around 200–300 MHz (high‑gain, fast switching)
- Vce(sat): ~0.2–0.3 V at Ic = 10 mA, Ib = 1 mA
- Temperature range: −55 °C to +150 °C
Suitable for small‑signal amplification and switching in compact, low‑power designs.

3 pins. It is a general‑purpose NPN bipolar transistor in SOT‑23 package. Pinout (left to right, flat face toward you): Pin 1 = Emitter, Pin 2 = Base, Pin 3 = Collector.

- Manufacturer: Nexperia (a Dutch multinational semiconductor company; originated from Philips Semiconductors and later the discrete-device business of NXP).
- What kind of company: A global semiconductor manufacturer that specializes in discrete devices (transistors, diodes), protection components, and related logic/passive products for automotive, industrial, and consumer markets.

BC847C-QR is a RoHS-compliant NPN general‑purpose transistor in a SOT‑23 package. Key specs: Vceo ~ 45 V, Ic up to 100 mA, high gain (C grade).
Common applications:
- Small‑signal amplification and buffering
- Switching and interfacing in microcontroller/logic circuits
- Drivers for relays, LEDs, and optocouplers
- Level shifting and compact analog front‑ends in portable/consumer electronics
Ideal for compact, low‑power analog/digital circuits where moderate current and voltages are needed.

SOT-23 surface-mount package; the “-QR” suffix indicates tape-and-reel packaging.