TIP122 Darlington Transistor
VAT inclusive; Computed calculations added locally.
Overview
The TIP122 Darlington Transistor is a popular NPN power transistor featuring a high current gain, making it useful when a small control signal needs to switch or control a higher-current load. Its Darlington configuration provides significantly higher gain than a conventional single transistor.
It is commonly used in Arduino and microcontroller projects, motor control circuits, relay drivers, LED applications, solenoid drivers, power switching, and general-purpose transistor circuits.
For makers, students, and electronics engineers, the TIP122 provides a practical solution for interfacing low-power control signals with loads that require more current than a microcontroller output can safely provide.
Note: Same Batch/Lot or Part Numbers are not guaranteed. Return at Change of mind for this reason is not accepted.
Customer Reviews
Share your verified purchase experience with the community.
Earn Loyalty Rewards
Get 50 Points for reviewing + bonus points when upvoted!
Want to share your experience?
Sign in to leave a verified review for this product.
New here? Create a free account
Verified Comments Listing
Product Technical Information
Technical Details
The TIP122 Darlington Transistor is an NPN Darlington power transistor designed for applications requiring high current gain and switching capability. It combines two transistor stages internally in a Darlington configuration, allowing a relatively small base current to control a significantly larger collector current.
This makes the TIP122 useful for interfacing microcontrollers and low-power control circuits with higher-current loads. It can be used in motor control, relay switching, solenoid control, lamp drivers, LED circuits, and other power-switching applications.
The TO-220 package makes the transistor convenient for through-hole PCB assembly and projects where additional thermal management may be required. For higher-power applications, an appropriate heatsink and proper circuit design should be considered.
Key Features
- NPN Darlington power transistor
- High current gain
- Suitable for power switching applications
- TO-220 through-hole package
- Useful for motor and relay driver circuits
- Suitable for solenoid and load control
- Can interface microcontroller outputs with suitable loads
- Useful for Arduino and DIY electronics projects
- Suitable for general-purpose transistor applications
Frequently Asked Questions
You May Also Like
What Engineers & Builders Say
Trusted by makers, robotics researchers, and DIY electronics enthusiasts across Bangladesh.
"The ESP32 DIY Ambilight Kit arrived within 24 hours in perfect packaging. Everything worked out of the box with flawless code support!"
Tanvir Ahmed
Robotics Engineer
"KathalTech is my go-to store for sensors, NodeMCU boards, and microcontrollers in Bangladesh. Highly reliable service and genuine components."
Nusrat Jahan
IoT Researcher
"Super fast delivery and great support. The pickup point option made it very convenient to collect my project parts after classes."
Sabbir Hossain
University Student & Hobbyist
Sign in with Google +100 PTS
Get 100 Welcome Points & track your orders seamlessly.