Description
The TL431 / TL431A is a versatile and highly stable programmable voltage reference ideal for use in power supply designs, Zener diode replacements, voltage monitoring circuits, and more.
With adjustable output from 2.5V to 36V, and sharp turn-on response, it’s the go-to solution for DIY electronics and professional power electronics.
Perfect for secondary-side regulation, adjustable power supplies, and switching-mode power supplies (SMPSs).
- Model: TL431 / TL431A – Programmable Shunt Regulator
- Output Voltage Range: Adjustable from 2.5V (Vref) to 36V
- Package Type: TO-92 (Through-Hole)
- Output Impedance: Typically 0.2Ω
- Sink Current Range: 1 mA to 100 mA
- Temperature Range: −40°C to +125°C
- Output Noise: Low ideal for precision analog circuits
- Sharp turn-on characteristic excellent Zener diode replacement
- Applications: Voltage reference, feedback regulation, power monitoring, comparator
What’s Included:
- 5x TL431 / TL431A TO-92 Voltage Reference ICs
Great For:
- Zener Diode Replacement in regulated circuits
- Adjustable Voltage Reference in DIY and commercial power supply projects
- Comparator Reference for analog applications
- Flyback SMPS Secondary Regulation
- Arduino & Microcontroller Power Regulation Prototyping
- Bench Power Supply Designs & Linear Regulator Projects
Usage Tips:
- Requires two external resistors to set the output voltage
- Use in place of fixed Zeners for more flexible voltage regulation
- Suitable for both positive and negative regulation circuits
- Compatible with breadboards and perfboards thanks to TO-92 package
