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HomeProductsDiscrete Semiconductor ProductsTransistors - Bipolar (BJT) - SingleBD681STU
Fairchild Semiconductor
Image may be representation.
See specifications for product details.

BD681STU - Fairchild Semiconductor

Manufacturer Part Number
BD681STU
Manufacturer
Fairchild (onsemi)
Allelco Part Number
32D-BD681STU
ECAD Model
Parts Description
TRANS NPN DARL 100V 4A TO126-3
Detailed Description
Package
TO-225AA, TO-126-3
Data sheet
BD681STU.pdf
RoHs Status
ROHS3 Compliant
In stock: 4440

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Quantity

Specifications

BD681STU Tech Specifications
Fairchild Semiconductor - BD681STU technical specifications, attributes, parameters and parts with similar specifications to Fairchild Semiconductor - BD681STU

Product Attribute Attribute Value  
Manufacturer Fairchild (onsemi)  
Voltage - Collector Emitter Breakdown (Max) 100 V  
Vce Saturation (Max) @ Ib, Ic 2.5V @ 30mA, 1.5A  
Transistor Type NPN - Darlington  
Supplier Device Package TO-126-3  
Series -  
Power - Max 40 W  
Package / Case TO-225AA, TO-126-3  
Product Attribute Attribute Value  
Package Bulk  
Operating Temperature 150°C (TJ)  
Mounting Type Through Hole  
Frequency - Transition -  
DC Current Gain (hFE) (Min) @ Ic, Vce 750 @ 1.5A, 3V  
Current - Collector Cutoff (Max) 500µA  
Current - Collector (Ic) (Max) 4 A  
Base Product Number BD681  

Parts Introduction

Manufacturer Part Number

BD681STU

Manufacturer

Fairchild (onsemi)

Introduction

High-voltage, high-current Darlington transistor

Product Features and Performance

High voltage operation up to 100V

High current capability up to 4A

High DC current gain of 750 minimum

Low collector-emitter saturation voltage

Product Advantages

Suitable for high-power switching and amplification applications

Provides high current gain in a compact TO-126 package

Reliable performance in a wide temperature range up to 150°C

Key Technical Parameters

Voltage Collector Emitter Breakdown (Max): 100V

Current Collector (Ic) (Max): 4A

Current Collector Cutoff (Max): 500A

Vce Saturation (Max) @ Ib, Ic: 2.5V @ 30mA, 1.5A

DC Current Gain (hFE) (Min) @ Ic, Vce: 750 @ 1.5A, 3V

Quality and Safety Features

RoHS3 compliant

Packaged in rugged TO-126-3 case

Compatibility

Compatible with a wide range of electronic circuits and systems requiring high-voltage, high-current Darlington transistors

Application Areas

Motor control

Power supplies

Lighting and lamp drivers

Industrial and consumer electronics

Product Lifecycle

This product is currently available and not nearing discontinuation

Replacement or upgraded options may become available in the future as technology advances

Key Reasons to Choose This Product

High voltage and current handling capabilities

Excellent current gain for efficient power amplification

Reliable performance in harsh environments up to 150°C

Compact and rugged TO-126-3 package

RoHS3 compliance for use in modern electronic devices

Parts with Similar Specifications

The three parts on the right have similar specifications to Fairchild Semiconductor BD681STU

Product Attribute BD681STU BD681STU BD682STU BD682G
Part Number BD681STU BD681STU BD682STU BD682G
Manufacturer Fairchild Semiconductor onsemi Fairchild Semiconductor onsemi
Voltage - Collector Emitter Breakdown (Max) 100 V 100 V 100 V 100 V
Package Bulk Tube Bulk Bulk
Series - - - -
Vce Saturation (Max) @ Ib, Ic 2.5V @ 30mA, 1.5A 2.5V @ 30mA, 1.5A 2.5V @ 30mA, 1.5A 2.5V @ 30mA, 1.5A
Frequency - Transition - - - -
Base Product Number BD681 BD681 - BD682
Supplier Device Package TO-126-3 TO-126-3 TO-126-3 TO-126
Package / Case TO-225AA, TO-126-3 TO-225AA, TO-126-3 TO-225AA, TO-126-3 TO-225AA, TO-126-3
DC Current Gain (hFE) (Min) @ Ic, Vce 750 @ 1.5A, 3V 750 @ 1.5A, 3V 750 @ 1.5A, 3V 750 @ 1.5A, 3V
Mounting Type Through Hole Through Hole Through Hole Through Hole
Current - Collector (Ic) (Max) 4 A 4 A 4 A 4 A
Current - Collector Cutoff (Max) 500µA 500µA 500µA 500µA
Operating Temperature 150°C (TJ) 150°C (TJ) 150°C (TJ) -55°C ~ 150°C (TJ)
Power - Max 40 W 40 W 14 W 40 W
Transistor Type NPN - Darlington NPN - Darlington PNP - Darlington PNP - Darlington

Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

  1. Use your express account for shipment if you have one.
  2. Use our account for the shipment. Refer to the table below for the approximate charges.
(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
  2. Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.

Payment Support

The payment method can be chosen from the methods shown below: Wire Transfer (T/T, Bank Transfer), Western Union, Credit card, PayPal.

Your Faithful Supply Chain Partner -

Contact us if you have any questions.

  1. Phone
    +00852 9146 4856

Certifications & Memberships

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Fairchild Semiconductor

BD681STU

Fairchild Semiconductor
32D-BD681STU

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