BD139 NPN Bipolar Medium Power Transistor (BJT) 80V 1.5A TO-126 Package

Quality electronics from The Engineer Store, Bengaluru. Fast shipping, 7-day warranty on manufacturing defects, expert support.

Key Specifications

Parameter	Value
Transistor Type	NPN Bipolar Junction Transistor (BJT)
Maximum Collector-Emitter Voltage (Vce)	80V
Maximum Collector Current (Ic)	1.5A
Package Type	TO-126 (3-pin, through-hole)
Power Classification	Medium Power
Origin	Original/Authentic
Warranty	7-day warranty on manufacturing defects
Technical Support	Email & WhatsApp 24/7

Why Choose BD139 from The Engineer Store?

100% Authentic Components - Sourced directly from authorized distributors with verification

Fast Delivery - 1-5 day shipping, 7-8 day delivery from Bengaluru warehouse

Expert Technical Support - 24/7 assistance via email and WhatsApp

Competitive Pricing - Best rates with bulk discounts available

Quality Assured - Every unit tested before dispatch

Common Applications

• Audio Amplifiers - Driver and output stages
• Power Switching - Relay and solenoid control circuits
• Motor Control - PWM and speed control applications
• LED Drivers - High-brightness LED switching
• Industrial Control - AC/DC load switching
• Consumer Electronics - Power supply circuits and inverters

Project Ideas

DIY Electronics Projects

• Build hobby amplifiers and audio circuits
• Create relay control modules
• Design LED driver circuits

Professional Applications

• Industrial automation and control systems
• Commercial power supply design
• Professional audio equipment

Learning & Education

• Perfect for electronics students and hobbyists
• Ideal for skill development and experimentation
• Great for prototyping and circuit design courses

What's Included

BD139 Transistor (1 piece or quantity ordered)

Technical datasheet and pinout diagram

Quick start guide

Support contact information

Technical Highlights

• Reliable Performance - Proven design used in countless applications worldwide
• Easy Integration - Standard TO-126 package fits most PCB layouts
• Cost-Effective - Excellent value for medium-power switching applications
• Wide Availability - Compatible with most circuit designs and schematics

Frequently Asked Questions

Is the BD139 100% authentic?

Yes, absolutely. All components are sourced from authorized distributors and verified for authenticity before dispatch. We provide authentication certificates upon request.

What warranty coverage is included?

Every BD139 comes with a 7-day warranty on manufacturing defects covering manufacturing defects. Defective units can be replaced free of charge.

How fast can I receive this?

Standard delivery is 1-5 business days to most locations across India from our Bengaluru warehouse. Express shipping options are also available.

Do you provide technical support?

Yes! Our technical team is available 24/7 via email and WhatsApp to answer questions, provide datasheets, and assist with circuit design.

What's your return policy?

We offer a 7-day return policy on defective items with full refund or replacement at no extra cost. applicable on manufacturing defects only.

Are bulk discounts available?

Yes! Orders of 10 or more units qualify for wholesale pricing. Contact us for a custom quote.

Can I use BD139 in my existing circuit design?

BD139 is a standard medium-power NPN transistor. If your design calls for an 80V/1.5A NPN BJT in TO-126 package, it's a direct fit. Consult the datasheet for pin compatibility.

Is this suitable for beginners?

Yes! BD139 is widely used in educational projects and is perfect for learning electronics. We provide full documentation and support to help you get started.

Order Now

Fast Shipping Authentic Quality Expert Support

For bulk orders, custom quotes, or technical assistance, contact us anytime!

Buy BD139 NPN Bipolar Medium Power Transistor (BJT) 80V 1.5A TO-126 Package Online in India

Purchase the BD139 NPN Bipolar Medium Power Transistor (BJT) 80V 1.5A TO-126 Package online at The Engineer Store - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on BD139 NPN Bipolar Medium Power Transistor (BJT) 80V 1.5A TO-126 Package with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.

Looking to buy BD139 NPN Bipolar Medium Power Transistor (BJT) 80V 1.5A TO-126 Package at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.