Transistor BC431 NPN, 70V, 0.8A, TO-92

Transistor BC431 NPN, 0.8A TO-92

Transistors

Reference: TRBC431

Part.No: BC431

€0.80

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The BC431 is an NPN Bipolar Junction Transistor (BJT) in a TO-92 package, rated for 70V and 0.8A. Suited for medium-voltage switching and driver stages in general-purpose electronics.

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Description
Product Details

BC431 NPN Transistor - Medium Voltage Switching & Driving

The BC431 is an NPN transistor in a TO-92 package rated for 70V and 0.8A, offering higher voltage headroom than typical small-signal parts like the BC547. It's a good fit for driving relays, small motors or medium-voltage switching stages where extra breakdown margin is needed.

Functions & Applications

70V Breakdown Voltage: Extra headroom compared to standard small-signal transistors like BC547.
0.8A Collector Current: Enough capacity for small motors, relays and medium-load switching.
Standard TO-92 Package: Easy through-hole soldering for breadboard and prototyping use.
General-Purpose NPN: Usable both as a switch and as a signal amplifier in driver circuits.

Technical Specifications

Parameter	Value / Specification
Transistor Type	BJT (Bipolar Junction Transistor)
Polarity / Channel	NPN
Package / Case	TO-92
Collector-Emitter Voltage (Vceo)	70V
Max Collector Current (Ic)	0.8A
Mounting Type	Through-Hole (THT)

Frequently Asked Questions

Q: Can the BC431 drive a small 12V DC motor or relay directly?
A: Yes, as long as the load current stays below 0.8A (Ic). For inductive loads like motors or relay coils, add a flyback diode to protect the transistor.

Q: What is the complementary PNP part for BC431?
A: The BC461 is the complementary PNP transistor with matching voltage and current ratings.

Note: Price refers to one (1) piece. The component is shipped in bulk without individual packaging.

Transistor Type: BJT (Bipolar Junction Transistor)
Transistor Polarity / Channel: NPN
Transistor Case Style: TO-92

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