TL431V-TP Equivalent & Substitute Parts

Part Overview

The TL431V-TP is a Shunt Voltage Reference IC manufactured by Micro Commercial Co, classified as a Power Management (PMIC) component. This adjustable voltage reference operates with a fixed output of 2.5V and maximum output of 36V, delivering up to 100 mA with ±2% tolerance. The device is packaged in SOT-23 surface mount configuration.

The TL431V-TP is designated as Obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this reference voltage architecture.

Substiute Parts

TL431V-TP

Micro Commercial CoIn Stock: 916TL431V-TP Datasheet

Current PartRFQ

TL431KA-TP

Micro Commercial CoIn Stock: 1117TL431KA-TP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TL431V-TP is determined by the following critical parameters:

Electrical Compatibility Requirements:

• Reference Type: Shunt voltage reference architecture
• Voltage Output Range: Minimum 2.5V, Maximum 36V
• Current Output: 100 mA capability
• Current - Cathode: 1 mA minimum
• Tolerance: ±2% or better

Mechanical Compatibility Requirements:

• Package / Case: TO-236-3, SC-59, SOT-23-3
• Mounting Type: Surface Mount
• Supplier Device Package: SOT-23

Compliance Requirements:

• RoHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

The TL431KA-TP qualifies as a direct substitute based on matching electrical output specifications, identical package configuration, and equivalent compliance certifications. The substitute part maintains the same shunt reference architecture, output current capacity, cathode current specification, and physical form factor required for direct board-level replacement.

Parameter Comparison

Engineering Selection Recommendations

The TL431KA-TP is a qualified substitute for the obsolete TL431V-TP based on the following engineering criteria:

Electrical Equivalence: Both devices operate as shunt voltage references with identical maximum output voltage (36V) and output current capacity (100 mA). The TL431KA-TP provides superior tolerance performance (±0.5% versus ±2%), which represents an improvement in output voltage accuracy. The minimum output voltage specifications are functionally equivalent (2.495V versus 2.5V), remaining within acceptable design margins for typical shunt reference applications.

Package and Mechanical Compatibility: Both parts utilize identical SOT-23 surface mount packaging (TO-236-3, SC-59, SOT-23-3), enabling direct board-level substitution without PCB redesign or mechanical rework.

Compliance and Reliability: Both devices maintain ROHS3 compliance and Moisture Sensitivity Level 1 (Unlimited), ensuring equivalent environmental and regulatory qualification. The TL431KA-TP carries Active product status, providing long-term supply chain availability and manufacturing support compared to the Obsolete status of the TL431V-TP.

Extended Operating Range: The TL431KA-TP supports an extended operating temperature range (-40°C ~ 125°C) compared to the TL431V-TP (0°C ~ 70°C), providing additional thermal margin for demanding applications.

Frequently Asked Questions (FAQ)

Q: Can the TL431KA-TP directly replace the TL431V-TP without circuit modification?

A: Yes. Both devices share identical electrical output specifications (36V maximum, 100 mA output current, 1 mA cathode current), matching package configuration (SOT-23), and equivalent compliance certifications. Direct substitution is supported at the board level.

Q: What is the difference between "Adjustable" and "Programmable" output types?

A: The TL431V-TP features an Adjustable output type, while the TL431KA-TP features a Programmable output type. Both architectures function as shunt voltage references with the same electrical output range (2.5V to 36V). The programmable variant offers enhanced flexibility for applications requiring dynamic output voltage configuration.

Q: Does the improved tolerance of the TL431KA-TP (±0.5% versus ±2%) affect circuit compatibility?

A: No. The TL431KA-TP tolerance of ±0.5% is superior to the TL431V-TP tolerance of ±2%, representing improved output voltage accuracy. This enhancement maintains backward compatibility while providing tighter voltage regulation for precision applications.

Q: Are there packaging differences between these devices?

A: No. Both the TL431V-TP and TL431KA-TP utilize identical SOT-23 surface mount packaging (TO-236-3, SC-59, SOT-23-3). No PCB layout modifications are required for substitution.

Q: What is the significance of the TL431KA-TP extended operating temperature range?

A: The TL431KA-TP operates across -40°C ~ 125°C, compared to the TL431V-TP range of 0°C ~ 70°C. This extended range provides thermal margin for applications subject to extreme environmental conditions or high-temperature operating requirements.

Q: Is the TL431KA-TP available in the same packaging format as the TL431V-TP?

A: Yes. The TL431KA-TP is supplied in Tape & Reel (TR) packaging, maintaining the same SOT-23 component form factor as the TL431V-TP. Both devices are compatible with automated assembly processes.

Q: What compliance certifications apply to the TL431KA-TP?

A: The TL431KA-TP maintains ROHS3 compliance, Moisture Sensitivity Level 1 (Unlimited), and REACH Unaffected status. These certifications match or exceed the compliance profile of the TL431V-TP, ensuring equivalent regulatory qualification.