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Part Number: BC141

Function: NPN silicon AF medium power amplifier

Package: TO-39

Manufacturer: Multicomp

Image and Pinouts:

BC141 datasheet

Description

The BC141 is an NPN silicon medium-power transistor designed for audio frequency (AF) amplification and general-purpose switching applications. Housed in a TO-39 metal package, it offers good thermal performance and reliability, making it suitable for linear amplification stages and moderate power switching circuits.

Features

NPN silicon transistor for medium power applications
Suitable for AF (audio frequency) amplification
Capable of switching and linear operation
Robust TO-39 metal package for improved heat dissipation
Reliable performance in industrial and consumer circuits

Absolute Maximum Ratings (Ta = 25°C)

Parameter	Symbol	Value	Unit
Collector-Base Voltage	V_CBO	60	V
Collector-Emitter Voltage	V_CEO	100	V
Emitter-Base Voltage	V_EBO	7	V
Collector Current	I_C	1	A
Power Dissipation	P_D	0.8	W
Junction Temperature	T_J	150	°C
Storage Temperature	T_STG	-65 ~ +200	°C

Typical Circuit Usage

Audio amplifier driver stages
Pre-amplifier and small signal amplification
General-purpose switching circuits
Relay or low-power load drivers
Signal conditioning stages

How to Choose This Part

Select for medium-power analog amplification up to 1A collector current
Verify voltage ratings match circuit requirements
Consider thermal design due to relatively low power dissipation
Evaluate gain (hFE) requirements depending on application
Compare with modern plastic-packaged alternatives for cost-sensitive designs

Applications

Audio frequency amplifiers
Industrial control circuits
Signal amplification systems
General-purpose electronic circuits
Consumer electronics

Alternative / Equivalent Products

BC107 / BC108 – Lower power small signal transistors
BD139 – Higher power NPN transistor
2N2219 – TO-39 NPN transistor with similar characteristics
2N3053 – Medium power NPN switching transistor
MPSA06 – General-purpose NPN transistor

BC141 Datasheet PDF Download

Other data sheets are available within the file: BC140, BC140-10, BC140-16, BC140-6

Description

This is DC-AC Inverter Control IC. BD9893F is a specialized electronic component designed to control and manage the operation of a DC to AC power inverter. DC-AC inverters are devices that convert direct current (DC) power into alternating current (AC) power. They are commonly used in various applications, such as uninterruptible power supplies (UPS), solar inverters, motor drives, and portable electronic devices.

Features

Single-channel push-pull inverter control architecture

Lamp current and voltage feedback regulation

Soft-start function for controlled startup sequencing

Short-circuit protection with timer latch mechanism

Integrated overvoltage protection

Under Voltage Lock Out (UVLO)

Standby mode selectable via control pin

BURST mode operation using PWM and DC input

2 page

Design Notes

Optimize transformer design to match push-pull switching characteristics

Carefully route feedback lines to minimize noise and ensure stable regulation

External timing components define soft-start and protection delay behavior

Ensure proper heat dissipation under continuous inverter operation

Use stable DC input filtering to maintain consistent BURST mode performance

How to Choose This Part

Select for push-pull inverter designs requiring integrated protection features

Suitable for applications needing accurate lamp current feedback

Consider when BURST mode efficiency at light load is important

Ideal for compact designs with minimal external component count

Applications

LCD and CCFL backlight inverters

DC-AC conversion modules

Industrial display power supplies

Portable electronic inverter systems

Alternative / Equivalent Products

BD9893FV

BD9897FS

OZ9938

FAN7316

BD9893F PDF Datasheet

Pinout

BC141 Datasheet PDF – 60V, NPN Transistor, TO-39