Transistor

C5198 Datasheet PDF – 140V, 10A, NPN Transistor – Toshiba

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Transistor C5198 is a silicon NPN power transistor designed primarily for audio frequency power amplification and high-fidelity power output stages.

Part Number: 2SC5198

Function:  NPN Transistor ( Vceo = 140V min, Ic = 10A )

Package: TO-3PN Type

Manufacturer: Toshiba

See the preview image and the PDF file for more information.

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C5198 image

Description

This is 140V, 10A, Silicon NPN Triple Diffused Type Transistor.

The C5198 is a bipolar junction transistor (BJT) made by various electronics companies such as Toshiba and Sanyo. It is a NPN transistor that is typically used for audio amplification and switching applications. The 2SC5198 is commonly used in audio amplifier circuits, as well as in power amplifier stages and preamplifiers.

Features

  • Type: NPN Bipolar Junction Transistor
  • VCEO: 140V
  • IC: 10A
  • PC: 100W (Tc = 25°C)
  • Complementary Pair: 2SA1941 (PNP)
  • Construction: Triple Diffused (improves gain and ruggedness)

C5198 pinout

C5198 datasheet

Absolute Maximum Ratings (Ta= 25°C)

1. Collector-base voltage : VCBO = 140 V

2. Collector-emitter voltage : VCEO = 140 V

3. Emitter-base voltage : VEBO = 5 V

4. Collector current : IC = 10 A

5. Base current : IB = 1 A

6. Collector power dissipation  (Tc= 25°C) : PC = 100 W

7. Junction temperature : Tj  = 150 °C

Typical Usage Example

  • Used as output transistor in Class AB amplifier
  • Paired with 2SA1941 for complementary symmetry
  • Mounted on large heat sink for thermal stability

Design Notes (Critical Points)

  • Heat sinking is mandatory (100W dissipation capability)
  • Use emitter resistors (~0.22Ω) for current sharing and stability
  • Ensure proper biasing to avoid crossover distortion
  • Check SOA when used in linear region
  • Include protection circuits (speaker protection, overcurrent)

Typical Applications

  • Audio power amplifier output stages
  • Hi-Fi stereo amplifiers
  • High-current driver circuits
  • Linear power regulators
  • General-purpose power switching

Alternative / Equivalent Products

  • 2SC5200 (higher power variant)
  • TIP3055 (general-purpose alternative)
  • MJL3281A (high-end audio transistor)
  • 2SC2922 (premium audio grade)

C5198 Datasheet PDF

 

BDW53 Datasheet PDF – 45V, 4A, NPN Transistor, TO-220

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Part Number: BDW53

Function: 45V, 4A, NPN Silicon Power Darlington Transistor

Package: TO-220 Type

Manufacturer: Bourns, Inc

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BDW53 datasheet pdf

Description

The BDW53 is a 45V, 4A NPN Darlington power transistor designed for high-current switching and amplification applications, typically available in a TO-220 package. It features high current gain, strong thermal performance, and compatibility with complementary PNP devices in the BDW54 series. This device is commonly used in motor control, power regulators, and audio amplifier output stages.

Features

  • High current gain with minimum hFE of 750 at IC=1.5A
  • Power dissipation up to 40W at TC=25°C
  • Designed for complementary pairing with BDW54 series
  • Integrated Darlington configuration for high amplification

Pinout

BDW53 datasheet

Absolute Maximum Ratings (Tc = 25 °C)

Parameter Symbol Value Unit
Collector-Base Voltage VCBO 45 V
Collector-Emitter Voltage VCEO 45 V
Emitter-Base Voltage VEBO 5 V
Collector Current IC 4 A
Total Power Dissipation Ptot 40 W
Junction Temperature Tj 150 °C
Storage Temperature Tstg -55 to 150 °C

Design Notes

  • Due to Darlington configuration, expect higher VCE(sat) compared to single BJTs
  • Ensure proper heat sinking to maintain junction temperature within safe limits
  • Base drive requirements are lower due to high current gain but must be controlled to avoid overdrive
  • Consider switching speed limitations inherent to Darlington pairs
  • Include flyback diodes when driving inductive loads

Typical Circuit Usage

  • Low-side switching for motors and relays
  • Linear voltage regulator pass transistor stage
  • Audio amplifier output stage (class B or AB)
  • LED strip or high-current load drivers
  • Power control circuits with microcontroller interface

How to Choose This Part

  • Select when high current gain is required with minimal base drive
  • Suitable for applications below 45V and up to 4A load current
  • Prefer when thermal dissipation can be managed effectively
  • Use when complementary pairing with BDW54 is needed
  • Not ideal for high-speed switching applications due to slower response

Applications

  • Motor drivers and actuator control
  • Power supply regulation circuits
  • Audio amplification systems
  • Industrial control systems
  • Lighting control and LED drivers

Alternative / Equivalent Products

  • BDW54 (PNP complementary pair)
  • TIP122 (NPN Darlington transistor)
  • TIP120 (lower voltage alternative)
  • MJE800 series (power transistor alternatives)
  • 2N6284 (similar Darlington transistor)

 

Other data sheets are available within the file: BDW53A, BDW53B, BDW53C, BDW53D

BDW53 Datasheet PDF Download


BDW53 pdf