NPN Transistor – 40 V, 0.2 A (200 mA)

This is a small through‑hole NPN bipolar junction transistor (BJT) in a TO‑92‑3 package, commonly used as a switch or amplifier in low‑to‑medium‑power circuits. It can handle up to about 40 V across the collector–emitter and a continuous collector current of roughly 200 mA (0.2 A), with a power dissipation around 625 mW.

Key specs (typical)

• Type: NPN bipolar (BJT) transistor
• Voltage: Up to 40 V collector–emitter voltage (VCE)
• Current: Around 200 mA continuous collector current
• Speed / gain: Typical transition frequency about 300 MHz, suitable for simple switching and basic analog amplification
• Package: Through‑hole TO‑92‑3, three‑pin (base, collector, emitter) leaded package for breadboarding or PCBs

Typical uses

• Small‑signal switching (turning LEDs, relays, or low‑power loads on/off with a microcontroller).
• Basic amplifier stages in audio or sensor circuits.

Note: Exact part number (e.g., 2N3904, BC547, etc.) and detailed curves may vary by vendor; always check the datasheet for the specific transistor marked on the body.
Disclaimer: The images shown are for illustration purposes only and may not be an exact match.