BD437T

$0.24

Description：TRANS NPN 45V 4A TO-126
Series：-

SKU:05aa5e726935 Category: Single Bipolar Transistors Brand: onsemi

Consult the customer manager about the wholesale price.

consultation hotline：86-132-6715-2157

email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.

Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.

Product introduction

Product Detailed Parameters

Description：TRANS NPN 45V 4A TO-126
Series：-
Mfr：onsemi
Package：Tube
Transistor Type：NPN
Current - Collector (Ic) (Max)：4:00 AM
Voltage - Collector Emitter Breakdown (Max)：45 V
Vce Saturation (Max) @ Ib, Ic：800mV @ 300mA, 3A
Current - Collector Cutoff (Max)：100µA (ICBO)
DC Current Gain (hFE) (Min) @ Ic, Vce：85 @ 500mA, 1V
Power - Max：36 W
Frequency - Transition：3MHz
Operating Temperature：-55°C ~ 150°C (TJ)
Mounting Type：Through Hole
Package / Case：TO-225AA, TO-126-3
Supplier Device Package：TO-126
Grade：-
Qualification：-

Download product information

BD437T

Overview

The BD437T is an NPN epitaxial silicon power transistor manufactured by onsemi. It features a collector-emitter voltage (VCEO) of 45 V and a continuous collector current (IC) rating of 4 A. The device supports a maximum collector dissipation of 36 W at 25°C case temperature and operates with a junction temperature up to 150°C. Packaged in a TO-126 format, it provides a minimum DC current gain (hFE) of 30 at 2A and includes a complementary PNP counterpart.

Feature Summary

Designed for medium power linear and switching applications
Epitaxial silicon construction for reliable performance
Complementary pairing available with BD438 PNP transistor

Applications

Medium power linear circuits
Switching applications
Car-radio output stages

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and packing method. Confirm that the component meets RoHS compliance requirements for your region. Ensure the supplier source is authorized to prevent counterfeit parts. Validate that the part status matches your production timeline needs.

Selection Notes

Select this component when a 45 V NPN power transistor is required for medium power tasks. Consider the complementary BD438 if a matched pair is needed. Evaluate thermal management capabilities as the device dissipates significant heat. Verify that the TO-126 package fits the mechanical constraints of the design.

Part Context

This transistor belongs to the BD43x series, which includes BD433, BD435, and BD437 variants. These devices share similar physical packaging but differ in voltage ratings. The BD437 specifically targets the 45 V application range within this family of NPN epitaxial transistors.