BD679AS

$0.99

Description：TRANS NPN DARL 80V 4A TO-126-3
Series：-

SKU:b86ec6571e0f Category: Single Bipolar Transistors Brand: onsemi

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Product introduction

Product Detailed Parameters

Description：TRANS NPN DARL 80V 4A TO-126-3
Series：-
Mfr：onsemi
Package：Bulk
Transistor Type：NPN - Darlington
Current - Collector (Ic) (Max)：4:00 AM
Voltage - Collector Emitter Breakdown (Max)：80 V
Vce Saturation (Max) @ Ib, Ic：2.8V @ 40mA, 2A
Current - Collector Cutoff (Max)：500µA
DC Current Gain (hFE) (Min) @ Ic, Vce：750 @ 2A, 3V
Power - Max：40 W
Frequency - Transition：-
Operating Temperature：150°C (TJ)
Mounting Type：Through Hole
Package / Case：TO-225AA, TO-126-3
Supplier Device Package：TO-126-3
Grade：-
Qualification：-

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BD679AS

Overview

The BD679AS is a complementary silicon power Darlington transistor manufactured by onsemi. It utilizes planar base island technology with a monolithic Darlington configuration. The device features an integrated antiparallel collector-emitter diode, good hFE linearity, and high fT frequency characteristics.

Feature Summary

Monolithic Darlington configuration
Integrated antiparallel collector-emitter diode
High transition frequency

Applications

Power switching applications requiring high current gain
Complementary output stages in audio or linear circuits

Procurement Notes

Verify the specific suffix AS against the official onsemi datasheet to confirm pinout and thermal specifications. Ensure the component meets RoHS compliance requirements for your assembly process. Cross-reference the ordering number with current onsemi documentation to account for any Fairchild Semiconductor integration naming changes.

Selection Notes

Select this component for applications necessitating high current drive capabilities within a compact monolithic structure. The integrated diode simplifies circuit design for inductive loads. Verify that the operating temperature range and power dissipation limits align with the system's thermal management strategy.

Part Context

This part belongs to onsemi's portfolio of complementary silicon power Darlington transistors. These devices are designed for robust performance in power handling scenarios. The product line emphasizes reliability through planar base island technology, offering consistent electrical characteristics across the manufacturing batch.

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.