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Texas Instruments TL432ACPK — Analog & Data Acquisition

TL432ACPK Shunt Voltage Reference, 2.495V, ±1%, SOT-89-3

MPNTL432ACPK
Obsolete

Texas Instruments TL432 series adjustable shunt voltage reference, TL432ACPK, 2.495V min output, 100 mA output, ±1% tolerance, SOT-89-3 surface mount, 0°C to 70°C.

$0.1500Ref. price · indicative, final on quote
Texas Instruments TL432ACPK datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

TL432ACPK specifications
ParameterValue
Output typeAdjustable
MountingSurface Mount
Reference typeShunt
Voltage - output36 V
Voltage - output (Min (Fixed))2.495V
Output current100 mA
Current - cathode600 µA
Operating temperature0°C~70°C(TA)
PackageTape & Reel (TR); Cut Tape (CT)
Tolerance±1%
CaseTO-243AA

Product details

For new designs or volume production, an alternative should be qualified.

2.495 V adjustable shunt reference, 100 mA output

The minimum output voltage is 2.495 V, and the maximum is 36 V, set by two external resistors. Output current capability is 100 mA, with a cathode current of 600 µA minimum to maintain regulation. The ±1% tolerance on the reference voltage is adequate for general-purpose power supply feedback and voltage monitoring in commercial-temperature equipment.

SOT-89-3 package — footprint and thermal considerations

The TL432ACPK is supplied in a SOT-89-3 surface-mount package (also designated TO-243AA). This three-lead package has a large collector tab on the back that provides the primary thermal path to the PCB. At 100 mA output, the power dissipation can reach several hundred milliwatts depending on the programmed output voltage.

Commercial temperature grade limits application scope

It is not specified for industrial or automotive temperature ranges.

Frequently asked questions

What is the replacement for TL432ACPK?

No official successor part is listed by Texas Instruments for the TL432ACPK. A functionally similar alternative is the TL431 family, but the pinout differs — the TL432 uses a different pin arrangement (reference on pin 1, cathode on pin 2, anode on pin 3 in SOT-89-3) compared to the TL431. Verify the pinout against your PCB layout before substituting.

Can TL432ACPK replace TL431?

Not directly — the TL432ACPK and TL431 have different pinouts. The TL432 uses a pin configuration specific to the SOT-89-3 package (reference, cathode, anode), while the TL431 typically uses a different ordering. A PCB layout change or a pin-compatible variant would be required.

Where can I buy TL432ACPK?

Submit an RFQ for current availability and pricing — confirmation is provided at quote time.