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TL431BCDBZR Breakout
SHUNT REGULATOR ADJUST 2.5-36V SOT23-3
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Design a Custom BoardAbout This Component
Precision programmable shunt regulator with 0.5% voltage tolerance and adjustable output from 2.5V to 36V using two external resistors. Features 0.2Ω output impedance, 1-100mA sink current capability, and stable operation across -40°C to 125°C. Ideal for on-board regulation, power supplies, and as a Zener diode replacement in industrial power applications.
Package: SOT-23-3 · 3 pins
Why does this need a breakout?
SOT-23's tiny 0.95mm pin pitch and compact form factor make hand-soldering tedious and prone to bridging errors. A breakout board breaks out the three pins to standard 0.1" spacing for breadboard prototyping, eliminating the need for specialized soldering equipment and enabling fast circuit iteration with transistors, diodes, and small-signal components.
Component specifications
ELECTRICAL CHARACTERISTICS
| Manufacturer | Texas Instruments |
| Part Number | TL431BCDBZR |
| Package | SOT-23-3 |
| Pin Count | 3 |
| Current - Output | 100 mA |
| Output Type | Adjustable |
| Voltage - Output (Max) | 36 V |
| Voltage - Output (Min/Fixed) | 2.495V |
What's Included
BILL OF MATERIALS
- 1x TL431BCDBZR soldered onto breakout PCB
- Pin headers pre-soldered (2.54mm / 0.1" pitch)
- All IC pins broken out to 2.54mm headers
Breakout Board Design
PCB SPECIFICATIONS
WIDTH
< 0.9" (straddles breadboard)
PITCH
2.54mm standard
SOLDER
Lead-free, reflow assembled
FINISH
FR4, lead-free HASL