Transistor BC238

Transistor BC238 NPN, 0.1A TO-92

Transistors

Reference: TRBC238

Part.No: BC238

€0.60

In Stock

Immediate Dispatch

The BC238 is a compact NPN Bipolar Junction Transistor (BJT) in a TO-92 package. Designed for small-signal amplification and low-power switching applications in consumer electronics, audio circuits, and hobby projects.

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Description
Product Details

BC238 Small Signal NPN Transistor - Reliable Switching & Amplification

The BC238 is a general-purpose NPN transistor well-suited for low-current applications. With its moderate voltage rating and compact TO-92 package, it is ideal for building pre-amplifier stages, logic-level drivers, and simple signal-switching circuits in breadboard prototypes and PCB designs.

Functions & Applications

Low-Voltage Operation: Vceo rating of 20V makes it ideal for battery-powered and 5V logic circuits.
Compact TO-92 Package: Through-hole design perfect for breadboarding and universal PCBs.
High Gain: Good hFE characteristics for reliable signal amplification.
Reliable Switching: Suitable for LED drivers and logic-level interfacing with microcontrollers.

Technical Specifications

Parameter	Value / Specification
Transistor Type	BJT (Bipolar Junction Transistor)
Polarity / Channel	NPN
Package / Case	TO-92
Collector-Emitter Voltage (Vceo)	20V
Max Collector Current (Ic)	100mA
Power Dissipation (Pd)	500mW
Mounting Type	Through-Hole (THT)

Frequently Asked Questions

Q: What is the difference between BC238 and BC547?
A: The BC238 has a lower Vceo rating (20V vs. 45V) and is optimized for lower-voltage applications. Both are NPN signal transistors with similar gain characteristics but different voltage classifications.

Q: Can I use BC238 to drive an LED?
A: Yes. Use a base resistor (typically 1–10 kΩ) to limit base current from your MCU pin. The collector current (up to 100mA) is sufficient to drive a single LED or small relay coil with appropriate protection.

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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