BD157STU

$0.11

Description：TRANS NPN 250V 0.5A TO-126-3
Series：-

SKU:9fd8cc919fc0 Category: Single Bipolar Transistors Brand: onsemi

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Product introduction

Product Detailed Parameters

Description：TRANS NPN 250V 0.5A TO-126-3
Series：-
Mfr：onsemi
Package：Tube
Transistor Type：NPN
Current - Collector (Ic) (Max)：500 mA
Voltage - Collector Emitter Breakdown (Max)：250 V
Vce Saturation (Max) @ Ib, Ic：-
Current - Collector Cutoff (Max)：100µA (ICBO)
DC Current Gain (hFE) (Min) @ Ic, Vce：30 @ 50mA, 10V
Power - Max：20 W
Frequency - Transition：-
Operating Temperature：-
Mounting Type：Through Hole
Package / Case：TO-225AA, TO-126-3
Supplier Device Package：TO-126-3
Grade：-
Qualification：-

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BD157STU

Overview

The BD157STU is a plastic medium power NPN silicon transistor manufactured by onsemi. It is designed for use in power output stages for television, radio, phonograph, and other consumer product applications. The device features thermopad construction to provide high power dissipation ratings for high reliability. It is suitable for transformerless, line-operated equipment.

Feature Summary

Plastic medium power NPN silicon transistor
Thermopad construction for high power dissipation
Suitable for transformerless, line-operated equipment

Applications

Power output stages for television
Power output stages for radio
Power output stages for phonograph
Consumer product applications

Procurement Notes

Verify the manufacturer marking matches onsemi or authorized licensees. Confirm the package type is TO-220AB with thermopad. Check for RoHS compliance status if required by specific application standards. Ensure the part number suffix STU corresponds to the correct tape and reel or tube packaging as specified in the official datasheet.

Selection Notes

Select this component when a medium power NPN transistor is required for audio or video output stages. Consider the thermopad thermal management requirements for the specific PCB layout. Verify that the voltage and current ratings meet the circuit demands of transformerless line-operated designs.

Part Context

The BD157 series includes complementary PNP transistors such as the BD167. These devices are part of a family designed for general-purpose power amplification in consumer electronics. The BD157STU specifically denotes the NPN variant in a through-hole package.

Replacement Considerations

Compatible substitutes include the BD135, BD165, and MJE340G from various manufacturers. Verify pinout compatibility and thermal resistance values before substitution.

How to buy

Online and offline orders are supported. If the item is available for online purchase, you can place it in the cart; for wholesale pricing, please contact our product manager for a quote.

Payment Method

Payment methods: T/T, WeChat Pay, credit cards, Google Pay, Apple Pay . Buyer covers shipping, fees, duties, and taxes; contact our product manager if you need a contract/procurement process.

Delivery time

In-stock items usually ship within 24 hours. Otherwise, shipment is arranged 1 to 2 days after the items arrive at our warehouse. Timing depends on destination and shipping method.

Freight calculation

Freight cost depends on destination, package size, and weight . We offer shipping options via DHL, FedEx, UPS, and TNT , and can ship using your freight account upon request.

Mode of Transportation

We ship via DHL, FedEx, UPS, and TNT. If you prefer a specific logistics provider, we can ship using your designated carrier.

Return and Refund

Returns are accepted within 60 days of invoice with RMA approval. Items must be resalable; original invoice and test report are required. No returns for customer errors.