TLV431ACLPRE3 Equivalent & Substitute Parts

Part Overview

The TLV431ACLPRE3 is a shunt voltage reference IC manufactured by Texas Instruments, designed for adjustable voltage regulation applications. This component provides a fixed 1.24V output with adjustable capability up to 6V, delivering 15mA output current with ±1% tolerance. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. Substitute parts maintain functional compatibility while offering improved availability and extended operational specifications.

Substiute Parts

TLV431ACLPRE3

Texas InstrumentsIn Stock: 1070TLV431ACLPRE3 Datasheet

Current PartRFQ

TLV431AILPR

Texas InstrumentsIn Stock: 16435TLV431AILPR Datasheet

UpgradeRFQ

TS431AIZ-AP

STMicroelectronicsIn Stock: 1122TS431AIZ-AP Datasheet

MFR RecommendedRFQ

TS431AIZT

STMicroelectronicsIn Stock: 55282TS431AIZT Datasheet

MFR RecommendedRFQ

TS431IZ-AP

STMicroelectronicsIn Stock: 907TS431IZ-AP Datasheet

MFR RecommendedRFQ

TS431IZT

STMicroelectronicsIn Stock: 5126TS431IZT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following critical parameters: reference type (shunt), output type (adjustable), minimum output voltage (1.24V), maximum output voltage (6V), package type (TO-92-3), and RoHS compliance status. Substitute parts must maintain these core electrical and mechanical specifications to ensure functional compatibility within existing circuit designs.

The substitute parts are grouped into two categories based on output current and tolerance specifications:

Category 1 - Direct Electrical Match (15mA Output): TLV431AILPR maintains identical output current (15mA) and tolerance (±1%), with extended operating temperature range and improved product status (Last Time Buy vs. Obsolete).

Category 2 - Enhanced Performance (30mA Output): TS431AIZ-AP, TS431AIZT, TS431IZ-AP, and TS431IZT provide increased output current capability (30mA) with manufacturer-recommended status. These parts support higher current applications while maintaining voltage specifications and package compatibility. Tolerance variations (±1% or ±2%) and temperature coefficient specifications (100ppm/°C) are provided for design consideration.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications): TLV431AILPR is the primary substitute when output current requirements remain at 15mA and ±1% tolerance is specified. This part maintains Texas Instruments manufacturing continuity with improved product status (Last Time Buy) and extended operating temperature range (-40°C ~ 85°C), providing superior availability compared to the obsolete TLV431ACLPRE3.

For Enhanced Performance Applications: TS431AIZ-AP, TS431AIZT, TS431IZ-AP, and TS431IZT are manufacturer-recommended alternatives offering increased output current (30mA) with active product status. These STMicroelectronics parts provide extended operating temperature range (-40°C ~ 125°C) and are suitable for applications requiring higher current delivery or wider temperature operation. Selection between ±1% tolerance (TS431AIZ-AP, TS431AIZT) and ±2% tolerance (TS431IZ-AP, TS431IZT) depends on circuit accuracy requirements.

All substitute parts maintain ROHS3 compliance and identical package specifications (TO-92-3), ensuring mechanical and electrical compatibility with existing PCB designs. Packaging format selection (Cut Tape, Tape & Reel, or Tape & Box) should align with production volume and assembly requirements.

Frequently Asked Questions (FAQ)

Q: Can TS431 series parts directly replace TLV431ACLPRE3 in existing designs?

A: Yes, TS431 series parts are functionally compatible. All substitute parts maintain identical voltage specifications (1.24V minimum, 6V maximum), adjustable output type, shunt reference configuration, and TO-92-3 package format. The primary difference is increased output current capability (30mA vs. 15mA), which is backward compatible with circuits designed for 15mA operation.

Q: What is the difference between ±1% and ±2% tolerance variants?

A: Tolerance specification affects output voltage accuracy. ±1% tolerance (TS431AIZ-AP, TS431AIZT) provides tighter voltage regulation suitable for precision applications. ±2% tolerance (TS431IZ-AP, TS431IZT) offers broader acceptance bands and is appropriate for less stringent accuracy requirements. Circuit design specifications should determine tolerance selection.

Q: Why do substitute parts have lower cathode current (60µA vs. 80µA)?

A: Lower cathode current in substitute parts represents improved efficiency while maintaining functional performance. This parameter defines minimum operating current; circuits designed for 80µA operation remain compatible with 60µA parts.

Q: Are there packaging format differences between substitute parts?

A: Yes. TLV431AILPR is supplied in Cut Tape (CT) format. TS431AIZ-AP and TS431IZ-AP use Tape & Box (TB) packaging. TS431AIZT and TS431IZT use Tape & Reel (TR) packaging. All maintain identical TO-92-3 component specifications; packaging selection depends on production volume and assembly line requirements.

Q: What is the significance of "Last Time Buy" status for TLV431AILPR?

A: Last Time Buy status indicates this part remains available but production will cease. TLV431AILPR provides a transition path from obsolete TLV431ACLPRE3 with extended availability window. For long-term production, migration to active-status TS431 series parts is recommended.

Q: Do substitute parts require circuit modifications?

A: No circuit modifications are required. All substitute parts maintain identical electrical specifications for voltage output range, reference type, and output type. Increased output current capability in TS431 series is transparent to existing circuit designs and provides additional performance margin.