TLV431BCLPRE3 Equivalent & Substitute Parts

Part Overview

The TLV431BCLPRE3 is a shunt voltage reference IC manufactured by Texas Instruments, designed for adjustable voltage regulation applications. This component operates with a fixed output voltage of 1.24V and supports output voltages up to 6V with ±0.5% tolerance and 15mA output current capability. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity.

Substiute Parts

TLV431BCLPRE3

Texas InstrumentsIn Stock: 1030TLV431BCLPRE3 Datasheet

Current PartRFQ

TLV431BILPR

Texas InstrumentsIn Stock: 2169TLV431BILPR 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 for the TLV431BCLPRE3 is determined by the following critical parameters:

Electrical Compatibility Requirements:

• Reference Type: Shunt (must match)
• Output Type: Adjustable (must match)
• Voltage - Output (Min/Fixed): 1.24V (must match)
• Voltage - Output (Max): 6V (must match)
• Package / Case: TO-226-3, TO-92-3 (TO-226AA) Formed Leads (must match)
• Mounting Type: Through Hole (must match)

Allowable Variations:

• Current - Output: May exceed 15mA (higher current capability is acceptable)
• Tolerance: May be tighter than ±0.5% (±1% or ±2% acceptable for applications not requiring ±0.5% precision)
• Operating Temperature: May exceed 0°C ~ 70°C range (wider temperature range acceptable)
• Current - Cathode: May differ from 100µA (device-specific characteristic)
• Product Status: Active or Last Time Buy preferred over Obsolete
• Packaging Format: Cut Tape (CT), Tape & Box (TB), or Tape & Reel (TR) acceptable

Parameter Comparison

Engineering Selection Recommendations

Tier 1 - Direct Upgrade (Texas Instruments): TLV431BILPR is the primary upgrade path from TLV431BCLPRE3. Both parts maintain identical electrical specifications (1.24V output, 15mA current, ±0.5% tolerance) and package configuration. TLV431BILPR offers extended operating temperature range (-40°C ~ 85°C) and Last Time Buy status, providing better long-term availability than the obsolete original part.

Tier 2 - Cross-Manufacturer Substitutes (STMicroelectronics): TS431AIZ-AP and TS431AIZT are manufacturer-recommended alternatives from STMicroelectronics. Both maintain core electrical compatibility (1.24V output, 6V maximum, TO-92-3 package) with enhanced specifications: 30mA output current (double the original), ±1% tolerance, and extended operating temperature to -40°C ~ 125°C. These parts carry Active product status, ensuring long-term availability. TS431AIZT is supplied in Tape & Reel format for high-volume applications, while TS431AIZ-AP is supplied in Tape & Box format.

Tier 3 - Relaxed Tolerance Alternatives (STMicroelectronics): TS431IZ-AP and TS431IZT provide the same core functionality with ±2% tolerance specification. These parts are suitable for applications where ±0.5% precision is not required. TS431IZT offers the highest inventory availability (5071 pcs) in Cut Tape format.

All substitute parts maintain ROHS3 compliance and REACH Unaffected status, matching the regulatory profile of the original component.

Frequently Asked Questions (FAQ)

Q: Can TS431 series parts directly replace TLV431BCLPRE3? A: Yes. TS431AIZ-AP, TS431AIZT, TS431IZ-AP, and TS431IZT are electrically compatible substitutes. All maintain the 1.24V fixed output voltage, 6V maximum output, and TO-92-3 package configuration. The primary differences are increased output current capability (30mA vs. 15mA), tolerance specifications, and extended operating temperature ranges.

Q: What is the tolerance difference between TLV431BILPR and TS431 alternatives? A: TLV431BILPR maintains ±0.5% tolerance matching the original TLV431BCLPRE3. TS431AIZ-AP and TS431AIZT offer ±1% tolerance, while TS431IZ-AP and TS431IZT offer ±2% tolerance. Select based on application precision requirements.

Q: Are there packaging format differences between substitutes? A: Yes. TLV431BILPR is supplied in Cut Tape (CT) format. TS431AIZ-AP and TS431IZ-AP are supplied in Tape & Box (TB) format. TS431AIZT and TS431IZT are supplied in Tape & Reel (TR) and Cut Tape (CT) formats respectively. All maintain identical electrical and mechanical compatibility.

Q: What is the operating temperature range difference? A: TLV431BCLPRE3 operates 0°C ~ 70°C. TLV431BILPR extends this to -40°C ~ 85°C. All STMicroelectronics TS431 variants operate -40°C ~ 125°C, providing superior thermal performance for extended-range applications.

Q: Why does TS431 series have higher output current (30mA vs. 15mA)? A: The TS431 series represents an enhanced design generation with improved current delivery capability. This higher rating is backward compatible and does not affect applications designed for 15mA operation.

Q: Which substitute offers the best long-term availability? A: TS431AIZT and TS431IZT carry Active product status with the highest inventory levels (55,200 pcs and 5,071 pcs respectively), ensuring sustained availability. TLV431BILPR is Last Time Buy status, indicating limited future availability.