Product Images are shown for illustrative purposes only and may differ from actual product.

BD139 Power Transistor


Write a review | 2 reviews

  • Stock: 50

    Availability: InStock priceValidUntil: 2026-10-23

  • SKU: 352 | DAA193

Availability: InStock priceValidUntil: 2026-10-23

  • Rs. 9.00 (inc GST)
    Rs.7.63 + GST

    Qty :

GST Invoice: Available for all purchases; eligible for input tax credit.

Delivery: 2–8 days across India. No MOQ required.

Bulk Orders: Need a larger quantity or item not in stock? Email: dnatechindia [at] gmail.com

Import Service: We import a wide range of electronic components on request.

BD139 NPN Power Transistor for Audio Amplifiers

BD139 NPN Power Transistor designed for audio amplifiers with 80VDC voltage, 1.5ADC current, and 12.5W power dissipation.

The BD139 NPN Power Transistor for Audio Amplifiers is built for high-performance audio applications. It operates with a collector-emitter voltage of 80VDC and a collector current of 1.5ADC. This transistor is housed in a compact TO-126 plastic package, ensuring durability and reliability. Designed for audio amplifiers and drivers, it provides excellent current gain of 40, making it suitable for both complementary and quasi-complementary circuits.

This BD139 NPN Power Transistor can handle a maximum operating temperature of 150°C and a power dissipation of 12.5W. Its three-pin configuration allows for easy integration into various electronic projects. The transistor's robust design makes it ideal for applications where stability and performance are crucial.

Perfect for enthusiasts and professionals alike, the BD139 NPN Power Transistor is a vital component for audio systems and other electronic devices. Whether you are building a new amplifier or repairing an existing circuit, this transistor offers the reliability you need for optimal performance.

Explore the world of Diodes & Transistors with DNA. The BD139 from our trusted brand is essential for your audio applications. Check other Diodes & Transistors that we have in stock.

At DNA, we cater to all your electronic needs. If you cannot find specific parts, let us know. We can import them for you. Explore related items like Digital IC, Programmer, HMI Display, SMPS, MOSFET, and Development Module. Contact Us.

Features of BD139 NPN Power Transistor for Audio Amplifiers

  • Epitaxial planar design
  • High current gain of 40
  • Maximum collector-emitter voltage of 80VDC
  • Power dissipation of 12.5W
  • Compact TO-126 package

Specification of BD139 NPN Power Transistor for Audio Amplifiers

  • Collector Current: 1.5ADC
  • Operating Temperature Max: 150°C
  • Number of Pins: 3
  • Transistor Polarity: NPN

Applications of BD139 NPN Power Transistor for Audio Amplifiers

  • Audio amplifiers
  • Driver circuits
  • Electronic projects
  • Complementary circuits

Package Includes

  • 1 X BD139 NPN Power Transistor for Audio Amplifiers
Extra Information
Country of Origin China
Imported By ElectroSource Private Limited

Reviews (2)

Write a review

Note: HTML is not translated!
    Bad           Good
CAPTCHA verification code

Frequently Asked Questions

Do you provide a GST bills?
Yes we provide GST Bill by the name of DNA Solutions. You will receive a GST compliant invoice for your records. You can take GST benefit.
What is your return / replacement policy?
Returns/replacements depend on the item type and condition. If there’s an issue, contact us with photos/videos and we’ll guide you as per policy.
Where are you located / where do you ship from?
We’re based in Nashik, Maharashtra. All orders are dispatched from Nashik.
What payment methods do you accept?
We accept UPI, cards, netbanking, and other checkout options shown on the payment page.
Can you share a proforma invoice / quotation before I pay?
Yes — we can share a quotation/proforma invoice. Send: part number(s), quantity, your GSTIN (if applicable), billing name/address, and delivery PIN code.
If I order the same parts again later, will they match?
We try to maintain consistency, but supply can change. If matching lot/brand matters, tell us in advance and we’ll advise what’s available.
View all FAQs →

NEW Products

Product Page : New Products

Sensirion SCD30 CO2 Sensor 400-10000 ppm, Temp & RH, I2C Output

Sensirion SCD30 CO2 Sensor 400-10000 ppm, Temp & RH, I2C Output

Sensirion SCD30 CO2 Sensor 400-10000 ppm, I2C Output Sensirion SCD30 CO2 Sensor, 400-10000 ppm, Te..

Rs.1,961.75 (inc GST)
Rs.1,662.50 + GST

SKU: 9735 | DAI578
Stock: 10
ABS 50x52x35 mm IP65 Enclosure

ABS 50x52x35 mm IP65 Enclosure

ABS IP65 Enclosure 50x52x35 mm for Electronics -ABS-505235 is an IP65 rated ABS enclosure, 50x52x35..

Rs.178.18 (inc GST)
Rs.151.00 + GST

SKU: 2800 | DAE382
Stock: 5
0.56" Blue CA 7 Segment Display

0.56" Blue CA 7 Segment Display

Blue Common Anode 0.56 inch 7 Segment Display 0.56" Blue CA 7-Segment Display offers clear visibili..

Rs.21.24 (inc GST)
Rs.18.00 + GST

SKU: 3144 | DAE930
Stock: 10
DFrobot Gravity GP8600 DAC Module

DFrobot Gravity GP8600 DAC Module

Gravity GP8600 DAC Module for High-Resolution ControlGravity GP8600 DAC Module offers 16-bit high-re..

Rs.1,907.07 (inc GST)
Rs.1,616.16 + GST

SKU: 10881 | DAJ975
Stock: 2
Write review

Have You Seen

Product Page : Have You Seen

Meanwell DRC-60B AC - DC DIN Rail Power Supply

Meanwell DRC-60B AC - DC DIN Rail Power Supply

Meanwell DRC60-B SMPS 60W UPS Function Power SupplyDRC60-B: 60W power supply with UPS function, 12V/..

Rs.3,604.90 (inc GST)
Rs.3,055.00 + GST

SKU: 7521 | DAH100
Stock: 2
Nextion Enhanced NX3224K024 2.4" Touchscreen Display

Nextion Enhanced NX3224K024 2.4" Touchscreen Display

Nextion Enhanced 2.4" HMI Touch DisplayNextion NX3224K024 HMI Display with 16MB Flash, 3584 bytes RA..

Rs.2,847.00 (inc GST)
Rs.2,412.71 + GST

SKU: 1647 | DAB496
Stock: 34
XL2596 3.3Volts PWM Stepdown DC/DC Buck Converter IC

XL2596 3.3Volts PWM Stepdown DC/DC Buck Converter IC

XL2596 3.3Volts PWM Stepdown DC/DC Buck Converter XL2596 PWM Buck Converter, 3A output, 92% efficie..

Rs.46.14 (inc GST)
Rs.39.10 + GST

SKU: 7249 | DAF747
Stock: 150
ACS712 20 Ampere IC

ACS712 20 Ampere IC

ACS712 20 Ampere Current Sensor IC ACS712ELCTR-20A-T Current Sensor IC for AC/DC sensing; 20A max; ..

Rs.199.42 (inc GST)
Rs.169.00 + GST

SKU: 2325 | DAB900
Stock: 2
Write review

Related Products

Water Level Sensor Module

Water Level Sensor Module

Water Level Sensor Module Water Level Sensor Module for measuring water volume with DC 3-5V, ..

Rs.44.84 (inc GST)
Rs.38.00 + GST

SKU: 543 | DAA688
Stock: 30
EMO6 5 Pin Panel Socket (ELCOM)

EMO6 5 Pin Panel Socket (ELCOM)

ELCOM EMO-6 5 Pin Panel Mount Socket ELCOM EMO-6 is a 5 pin panel mount socket rated for 6A, 250VAC ..

Rs.53.10 (inc GST)
Rs.45.00 + GST

SKU: 3054 | DAE790
Stock: 0
Write review
AD5428YRUZ 8 Bit Digital to Analog Converter 2 20 TSSOP

AD5428YRUZ 8 Bit Digital to Analog Converter 2 20 TSSOP

AD5428YRUZ 8 Bit Digital to Analog Converter AD5428YRUZ Dual-channel DAC with 10 MHz bandwidth, 2.5V..

Rs.816.75 (inc GST)
Rs.692.16 + GST

SKU: 7952 | DAH678
Stock: 0