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TL431CD

The Texas Instruments TL431CD is an adjustable precision shunt regulator. It offers a programmable output voltage from Vref to 36V and a sink current capability from 1mA to 100mA.

✓ Total Stock: 43,321 pcs

$ Price Range: $1.32

TL431CD Available from 3 distributors

✓ Authorised

✓ Non-Authorised

Distributor		Stock	Pricing	MOQ	PKG	Lead Time	Date Code	On Order Quantity	On Order Delivery
Optech Co.,Limited ✓ Non-Authorised Inventory information	42,844 pcs On Request	42844 pcs	On Request	1	On Request	On Request	14+PB	On Request	On Request
Partservice ✓ Non-Authorised Inventory information	351 pcs On Request	351 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request
Speed Components Ltd ✓ Non-Authorised Inventory information	126 pcs On Request	126 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request

TL431CD Specifications Quick View

Most important parameters for selection – full specs in datasheet.

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Category	New Products
Manufacturer Name	Texas Instruments
Halogen Free	Halogen Free
Mounting Type	Surface Mount
Operating Temperature	0 to 70°C
Output Voltage	2.5 Vref V
Tape & Reel	2,500
Temperature Coefficient	50 ppm/°C

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TL431CD Description

Short technical summary and product information.

The Texas Instruments TL431CD is a three-terminal programmable shunt regulator diode. It operates as a low temperature coefficient zener, programmable from Vref (approximately 2.5V) up to 36V using two external resistors. This device exhibits a wide operating current range from 1.0 mA to 100 mA with a typical dynamic output impedance of 0.22 Ω.

Key features include a programmable output voltage up to 36V and a typical reference voltage tolerance of ±0.4% at 25°C for the B series. The TL431CD is temperature compensated for operation over its rated temperature range and offers low output noise voltage. It is available in an 8-pin SOIC package suitable for surface mounting.

This device is well-suited for applications such as digital voltmeters, power supplies, and operational amplifier circuitry. Its characteristics make it an excellent replacement for zener diodes, providing a stable reference from 5.0V logic supplies. The TL431CD can be used as either a positive or negative voltage reference.

TL431CD Quick Information

Product Type: Shunt Voltage Reference

Canonical Name: Texas Instruments TL431CD Adjustable Precision Shunt Regulator

Subcategory: Shunt Voltage References

TL431CD Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

Lead Free: Lead Free

TL431CD Estimated Pricing

Qty	Low	High
1+	$1.32	$1.32

Estimated market price range - modelled values for guidance only, not live distributor offers.

TL431CD Features

Programmable output voltage up to 36V.
Sink current capability from 1mA to 100mA.
Low dynamic output impedance of 0.22Ω.
Available in SOIC-8 package.
RoHS3 compliant.

TL431CD Applications

Used in adjustable power supplies.
Suitable for voltage regulation circuits.
Replacement for zener diodes.
Digital voltmeter applications.
Operational amplifier circuitry.

TL431CD FAQs

6 frequently asked questions generated from this part’s specifications.

What is the reference voltage tolerance of the TL431CD?

The typical reference voltage tolerance is ±0.4% at 25°C for the B-grade version.

What is the output voltage range of the TL431CD?

The output voltage is programmable from Vref (nominally 2.5V) up to 36V.

What is the operating temperature range of the TL431CD?

The device operates from 0°C to 70°C.

What package is the TL431CD available in?

The TL431CD is offered in an SOIC-8 surface-mount package.

What is the sink current capability of the TL431CD?

The sink current capability ranges from 1.0 mA to 100 mA.

What is the typical dynamic output impedance of the TL431CD?

The typical dynamic output impedance is 0.22 Ω.