TLV431BCDBVRG4 Equivalent & Substitute Parts

Part Overview

The TLV431BCDBVRG4 is a shunt voltage reference IC with adjustable output from Texas Instruments, designed for precision voltage regulation applications. This part operates with a fixed output voltage of 1.24V to 6V, ±0.5% tolerance, and 15mA output current in a SOT-23-5 surface mount package. The device is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and design requirements.

Substiute Parts

TLV431BCDBVRG4

Texas InstrumentsIn Stock: 1006TLV431BCDBVRG4 Datasheet

Current PartRFQ

TLV431BCDBVR

Texas InstrumentsIn Stock: 3675TLV431BCDBVR Datasheet

MFR RecommendedRFQ

TLV431BE5TA

Diodes IncorporatedIn Stock: 3447TLV431BE5TA Datasheet

DirectRFQ

TS431AILT

STMicroelectronicsIn Stock: 21726TS431AILT Datasheet

MFR RecommendedRFQ

TS431AIYLT

STMicroelectronicsIn Stock: 18817TS431AIYLT Datasheet

MFR RecommendedRFQ

TS431BILT

STMicroelectronicsIn Stock: 9608TS431BILT Datasheet

MFR RecommendedRFQ

TS431BIYLT

STMicroelectronicsIn Stock: 2205TS431BIYLT Datasheet

MFR RecommendedRFQ

TS431ILT

STMicroelectronicsIn Stock: 56209TS431ILT Datasheet

MFR RecommendedRFQ

TS431IYLT

STMicroelectronicsIn Stock: 2611TS431IYLT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the TLV431BCDBVRG4 is determined by the following critical parameters:

• Reference Type: Shunt voltage reference
• Output Type: Adjustable
• Voltage Output Range: 1.24V minimum, 6V maximum
• Tolerance: ±0.5%
• Package: SOT-23-5 surface mount
• Current Output: Minimum 15mA capability
• Current Cathode: 100µA nominal

Substitute parts are grouped into two categories:

Category 1: Direct Electrical Equivalents (Same Specifications) Parts with identical electrical specifications, output voltage range, tolerance, and current ratings. These provide pin-for-pin compatibility with no circuit modifications required.

Category 2: Enhanced Performance Substitutes (Improved Specifications) Parts with superior specifications including higher output current, extended temperature range, or improved tolerance. These are backward compatible but offer additional design margin and extended operating conditions.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: TLV431BCDBVR

The TLV431BCDBVR from Texas Instruments is the direct active equivalent. It maintains identical electrical specifications (6V output, 15mA current, ±0.5% tolerance) and package format (SOT-23-5). The only difference is packaging format (Cut Tape & Digi-Reel versus Tape & Reel). This part is ROHS3 compliant and carries active product status, ensuring long-term availability and supply chain stability.

Secondary Recommendation: TS431BILT or TS431BIYLT

The TS431BILT and TS431BIYLT from STMicroelectronics provide enhanced specifications with doubled output current (30mA versus 15mA) and extended operating temperature range (-40°C to 125°C versus 0°C to 70°C). Both maintain ±0.5% tolerance and SOT-23-5 package compatibility. The TS431BIYLT includes AEC-Q100 automotive qualification. These parts are suitable for applications requiring higher current delivery or extended temperature operation.

Alternative for Extended Voltage Range: TLV431BE5TA

The TLV431BE5TA from Diodes Incorporated extends the maximum output voltage to 18V while maintaining ±0.5% tolerance and 15mA output current. This part operates across -40°C to 125°C and is packaged in SOT-25. Selection of this part requires verification of PCB layout compatibility due to package variation.

Tolerance Trade-off Options: TS431AILT or TS431ILT

The TS431AILT provides ±1% tolerance with 30mA output current and extended temperature range. The TS431ILT offers ±2% tolerance with identical current and temperature specifications. These parts are suitable for applications where tighter tolerance is not critical and higher current capability is beneficial.

Frequently Asked Questions (FAQ)

Q: Can TLV431BCDBVR directly replace TLV431BCDBVRG4?

A: Yes. The TLV431BCDBVR is electrically identical with matching output voltage (6V), current (15mA), tolerance (±0.5%), and package (SOT-23-5). The difference is packaging format (Cut Tape & Digi-Reel versus Tape & Reel). No circuit modifications are required.

Q: What is the difference between TS431BILT and TS431BIYLT?

A: Both parts are electrically identical with ±0.5% tolerance, 30mA output current, and SOT-23-5 package. The TS431BIYLT includes AEC-Q100 automotive qualification and is designated for automotive applications. Select TS431BIYLT for automotive designs requiring qualification compliance.

Q: Can I use TS431AILT as a substitute if my circuit only requires 15mA?

A: Yes. The TS431AILT provides 30mA output current, which exceeds the 15mA requirement. However, tolerance is ±1% versus the original ±0.5%. Verify that ±1% tolerance is acceptable for your voltage reference application before selection.

Q: Is TLV431BE5TA compatible with existing PCB layouts?

A: The TLV431BE5TA uses SOT-25 package versus the SOT-23-5 of the original part. While both are 5-pin packages, pin spacing and footprint differ. PCB layout verification is required before substitution.

Q: What is the advantage of TS431BIYLT over TLV431BCDBVR?

A: The TS431BIYLT provides doubled output current (30mA versus 15mA), extended operating temperature (-40°C to 125°C versus 0°C to 70°C), and AEC-Q100 automotive qualification. These enhancements provide additional design margin and extended operational capability. Electrical specifications (±0.5% tolerance, 6V output) remain equivalent.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance status, matching the original TLV431BCDBVRG4 environmental compliance requirement.

Q: Which substitute offers the best availability?

A: The TS431ILT from STMicroelectronics shows the highest inventory level (56,192 pieces) among active parts. The TLV431BCDBVR provides the closest electrical match with 3,600 pieces in stock.