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Part Number: BDW53

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

Package: TO-220 Type

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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 I_C=1.5A
Power dissipation up to 40W at T_C=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	V_CBO	45	V
Collector-Emitter Voltage	V_CEO	45	V
Emitter-Base Voltage	V_EBO	5	V
Collector Current	I_C	4	A
Total Power Dissipation	P_tot	40	W
Junction Temperature	T_j	150	°C
Storage Temperature	T_stg	-55 to 150	°C

Design Notes

Due to Darlington configuration, expect higher V_CE(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

Part Number: T315HW07-V8, T315HW07 V8

Function: 32.0 inch Color TFT-LCD Module

Outline Dimension : 735.4(H) x 433.0 (V) x 20.9(D)

Manufacturer: AUO Optronics Corp

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Description

This specification applies to the 32.0 inch Color TFT-LCD Module T315HW07-V8. This LCD module has a TFT active matrix type liquid crystal panel 1,920×1,080 pixels, and diagonal size of 32.0 inch. This module supports 1,920×1,080 mode. Each pixel is divided into Red, Green and Blue sub-pixels or dots which are arranged in vertical stripes. Gray scale or the brightness of the sub-pixel color is determined with a 8-bit gray scale signal for each dot. The T315HW07-V8 has been designed to apply the 8-bit 2 channel LVDS interface method. It is intended to support displays where high brightness, wide viewing angle, high color saturation, and high color depth are very important.

T315HW07-V8 Board

Specification

1. Active Screen Size : 32.00 inch

2. Display Area : 698.40(H) x 392.85(V) mm

3. Outline Dimension : 735.4(H) x 433.0 (V) x 20.9(D) mm D: front bezel to T-con cover

4. Driver Element : a-Si TFT active matrix

5. Bezel Opening : 705.4(H) x 400 (V) mm

6. Display Colors : 8 bit, 16.7M Colors

7. Number of Pixels : 1,920×1,080 Pixel

8. Pixel Pitch 0.36375 : (H) x 0.36375 (W) mm

9. Pixel Arrangement : RGB vertical stripe

10. Display Operation Mode : Normally Black

11. Surface Treatment : Anti-Glare, 3H Haze=2%