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BU406 Transistor: Datasheet, Pinout, and Alternate Replacements
2024-11-19 967

The BU406 transistor, in a TO-220 package, is a high-speed silicon NPN transistor best possible for horizontal deflection in large CRT displays. Its efficient design ensures reliable performance, handling high currents and voltages with minimal power loss. Discover how the BU406 can enhance your electronic designs.

Catalog

1. Pin Configuration of the BU406 Transistor

2. Analysis of the BU406 CAD Model

3. Overview of BU406

4. Characteristics of BU406

5. Applications of BU406

6. BU406 Alternatives

7. Utilization for the BU406 Transistor

8. Advanced Safety Protocols for BU406

9. Manufacturer Overview

10. BU406 Packaging

11. Detailed Specifications

12. Comparable Components

BU406

Pin Configuration of the BU406 Transistor

Analysis of the BU406 CAD Model

Overview of BU406

The BU406 transistor excels in rapid switching, making it the best possible for horizontal deflection in CRT televisions, where timing ensures smooth operation and accurate image rendering. Its seamless integration with existing CRT systems and effective thermal management enhance its longevity and efficiency. Known for its speed and resilience under electrical stress, the BU406 supports reliable performance in demanding environments, contributing to the efficiency and durability of TV designs while advancing technological alteration.

Characteristics of BU406

Parameter	Specification
Package Type	TO-220
Transistor Type	NPN
Max Collector Current (IC)	7A
Max Collector-Emitter Voltage (VCE)	200V
Max Collector-Base Voltage (VCB)	400V
Max Emitter-Base Voltage (VBE)	5V
Max Collector Dissipation (Pc)	60 Watts
Max Transition Frequency (fT)	10 MHz
Max Storage & Operating Temperature	-65 to +150℃

Applications of BU406

TV's and CRT's Horizontal Deflection Circuits

The BU406 is basic in CRT horizontal deflection circuits, ensuring precise timing and smooth operation for accurate image rendering while handling high voltage and current demands.

High-Speed Switching

The BU406 excels in fast switching tasks, required for motor control, PWM circuits, and power supplies requiring precise timing and low switching losses.

High Voltage Applications

With its ability to handle high voltages, the BU406 is suitable for industrial equipment and power supply circuits, ensuring durability and reliability under electrical stress.

Audio Amplifiers

The BU406 supports efficient signal amplification in audio amplifiers, ensuring stable and distortion-free audio output for enhanced performance.

Humidifiers

Used in humidifiers, the BU406 controls power delivery efficiently, optimizing energy use and ensuring consistent device performance.

BU406 Alternatives

• BU407

• 2SD823

• 2SD1163

• 2SD1163A

• BU104P

• BU124

• BU406D

• BU408

Utilization for the BU406 Transistor

The BU406 transistor excels in high-voltage, quick-switching environments, reducing power losses with its low saturation voltage and enhancing efficiency in complex electronic systems. Initially recognized for its role in CRT televisions, the BU406 now supports diverse applications, including switching power supplies and energy management, enabling compact and efficient designs. Its effective thermal management and swift switching improve component reliability and longevity, making it a valuable solution for power control circuits facing heat regulation challenges.

Advanced Safety Protocols for BU406

To ensure reliable performance, the BU406 transistor must operate within specified limits, with a collector current below 560mA and a collector-emitter voltage under 160V, preventing overloading and circuit damage. Effective heat management, including the use of appropriately sized and positioned heatsinks, is required to enhance performance and lifespan. Employing thermal interface materials (TIMs) improves heat transfer efficiency, reducing thermal stress and maintaining structural integrity.

Manufacturer Overview

STMicroelectronics is a leading force in the semiconductor industry, renowned for driving alteration and advancing System-on-Chip (SoC) technology. By integrating multiple components into a single chip, ST enhances performance and streamlines operations, addressing market trends and future needs. The company’s solutions promote technology convergence, uniting disconnected systems to improve user experiences and support digital transformation across industries. Their alteration enhances reliability and efficiency in automotive, industrial, and consumer electronics, showcasing tangible benefits in improving operations and product features.

BU406 Packaging

DIM	Inches		Millimeters
DIM	Min	Max	Min	Max
A	0.57	0.62	14.48	15.75
B	0.38	0.415	9.65	10.3
C	0.16	0.19	4.07	4.83
D	0.045	0.081	1.14	2.06
F	0.125	0.165	3.18	4.19
G	0.1	0.126	2.54	3.2
H	0.095	0.105	2.42	2.67
J	0.018	0.024	0.46	0.61
K	0.495	0.52	12.7	14.27
L	0.045	0.082	1.15	2.08
N	0.1	0.12	2.54	3.04
Q	0.205	0.235	5.21	5.97
R	0.02	0.03	0.5	0.76
S	0.205	0.255	5.21	6.47
T	0.025	0.045	0.65	1.15
U	0.000	0.050	0.00	1.27
V	0.045	---	1.15	---
Z	---	0.080	---	2.04

Detailed Specifications

STMicroelectronics BU406 Technical Features, Characteristics, Parameters, and Components:

Type	Parameter
Mount	Through Hole
Mounting Type	Through Hole
Package / Case	TO-220-3
Number of Pins	3
Transistor Element Material	Silicon
Collector-Emitter Breakdown Voltage	200V
Number of Elements	1
Operating Temperature	150°C TJ
Packaging	Tube
JESD-609 Code	e3
Part Status	Obsolete
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Number of Terminations	3
ECCN Code	EAR99
Terminal Finish	Matte Tin (Sn)
Voltage - Rated DC	150V
Max Power Dissipation	60W
Current Rating	7A
Frequency	10MHz
Base Part Number	BU406
Pin Count	3
Element Configuration	Single
Power Dissipation	60W
Transistor Application	Switching
Gain Bandwidth Product	10MHz
Polarity/Channel Type	NPN
Transistor Type	NPN
Collector-Emitter Voltage (VCEO)	200V
Max Collector Current	7A
Current - Collector Cutoff (Max)	5mA
JEDEC-95 Code	TO-220AB
Vce Saturation (Max) @ Ib, Ic	1V @ 500mA, 5A
Transition Frequency	10MHz
Collector Base Voltage (VCBO)	400V
Emitter Base Voltage (VEBO)	6V
DC Current Gain-Min (hFE)	10
VCEsat-Max	1V
Turn Off Time-Max (toff)	750ns
Height	9.15mm
Length	10.4mm
Width	4.6mm
REACH SVHC	No SVHC
Radiation Hardening	No
RoHS Status	ROHS3 Compliant
Lead Free	Lead Free

Comparable Components

Part Number	BU406	BU407	BU406	BU406TU	KSD401G
Manufacturer	STMicroelectronics	ON Semiconductor	ON Semiconductor	ON Semiconductor	ON Semiconductor
Mount	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	TO-220-3	TO-220-3	TO-220-3	TO-220-3	TO-220-3
Collector Emitter Breakdown Voltage	200 V	200 V	200 V	150 V	150 V
Max Collector Current	7:00 AM	7:00 AM	7:00 AM	7:00 AM	2:00 AM
Transition Frequency	10 MHz	10 MHz	-	-	-
Collector Emitter Saturation Voltage	1 V	1 V	1 V	1 V	-
Power Dissipation	60 W	60 W	60 W	60 W	25 W
Max Power Dissipation	60 W	60 W	60 W	60 W	25 W

Datasheet PDF

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Frequently Asked Questions [FAQ]

1. What is the BU406?

The BU406 is a high-speed silicon NPN transistor housed in a Jedec TO-220 plastic package. It is specifically designed for horizontal deflection output stages in large-screen MTV receivers with 110° CRT displays.