BD681G

$1.41

Description：TRANS NPN DARL 100V 4A TO-126
Series：-

SKU:bd1458bbec66 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 DARL 100V 4A TO-126
Series：-
Mfr：onsemi
Package：Bulk
Transistor Type：NPN - Darlington
Current - Collector (Ic) (Max)：4:00 AM
Voltage - Collector Emitter Breakdown (Max)：100 V
Vce Saturation (Max) @ Ib, Ic：2.5V @ 30mA, 1.5A
Current - Collector Cutoff (Max)：500µA
DC Current Gain (hFE) (Min) @ Ic, Vce：750 @ 1.5A, 3V
Power - Max：40 W
Frequency - Transition：-
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

BD681G

Overview

The BD681G is a single NPN power Darlington transistor manufactured by onsemi. It features a monolithic configuration with an integrated antiparallel collector-emitter diode. The device supports a maximum DC collector current of 4 A and offers high linearity in hFE. Key voltage ratings include a collector-emitter breakdown voltage (VCEO) of 100 V, a collector-base voltage (VCBO) of 100 V, and an emitter-base voltage (VEBO) of 5 V. It operates within a temperature range of -55°C to +150°C and is housed in a TO-225AA through-hole package.

Feature Summary

Monolithic Darlington configuration with integrated antiparallel collector-emitter diode
High hFE linearity for improved signal fidelity
High transition frequency (fT) capability

Applications

Power switching applications requiring high gain
Linear amplifier circuits utilizing Darlington topology
Industrial control systems operating at elevated temperatures

Procurement Notes

Verify the specific suffix 'G' corresponds to the RoHS-compliant version as indicated by distributor listings. Confirm the package type is TO-225AA (CASE77) and ensure the manufacturer source is onsemi. Cross-reference the datasheet revision to confirm electrical characteristics match the required design specifications before finalizing procurement.

Selection Notes

Select this component when a high-current NPN switch with built-in flyback protection is needed. The integrated antiparallel diode simplifies circuit design for inductive loads. Ensure the thermal management strategy accommodates the TO-225AA package's dissipation capabilities under the specified 4 A load conditions.

Part Context

This part belongs to the BD681 series of bipolar power transistors. It utilizes planar base island technology for robust performance. The series includes both NPN and PNP variants with voltage ranges extending up to 400 V, catering to diverse power switching and amplification requirements in industrial and consumer electronics.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing pinouts and thermal constraints if considering alternative Darlington transistors from other manufacturers.

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.