Texas Instruments TL431CPG4 adjustable shunt voltage reference, 8-DIP through-hole package, output range 2.495 V to 36 V, ±2.2% tolerance, 100 mA cathode current, 1 mA minimum cathode current, 0°C to 70°C operating temperature.
| Parameter | Value |
|---|---|
| Output type | Adjustable |
| Mounting | Through Hole |
| Reference type | Shunt |
| Voltage - output | 36 V |
| Voltage - output (Min (Fixed)) | 2.495V |
| Output current | 100 mA |
| Current - cathode | 1 mA |
| Operating temperature | 0°C~70°C(TA) |
| Package | Tube |
| Tolerance | ±2.2% |
| Case | 8-DIP (0.300\", 7.62mm) |
The 8-DIP (0.300", 7.62 mm) through-hole package suits prototyping, legacy board repairs, and designs where SMT reflow is not practical.
The reference can sink up to 100 mA continuous cathode current, which is enough to bias an optocoupler LED in a feedback loop or drive a small load directly.
Yes, the TL431CPG4 and TL431CD share the same pinout — both are standard three-terminal shunt references. The difference is the package: the CPG4 is an 8-pin DIP (through-hole), while the CD is an 8-pin SOIC (surface-mount).