TL431CDBVRE4 Equivalent & Substitute Parts

Part Overview

The TL431CDBVRE4 is a shunt voltage reference IC manufactured by Texas Instruments, designed for adjustable voltage regulation applications. This component operates as an adjustable reference with a 2.495V minimum output and supports up to 36V operation with ±2.2% tolerance. The part is currently classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements. Suitable alternatives maintain the same functional characteristics while offering improved availability and extended operating temperature ranges.

Substiute Parts

TL431CDBVRE4

Texas InstrumentsIn Stock: 1100TL431CDBVRE4 Datasheet

Current PartRFQ

TL431CL5T

STMicroelectronicsIn Stock: 4141TL431CL5T Datasheet

DirectRFQ

TL431IL5T

STMicroelectronicsIn Stock: 9222TL431IL5T Datasheet

UpgradeRFQ

AS431BKTR-G1

Diodes IncorporatedIn Stock: 4229AS431BKTR-G1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TL431CDBVRE4 is determined by the following critical parameters:

• Reference Type: Shunt (all substitutes must maintain shunt topology)
• Output Type: Adjustable (voltage reference must be user-adjustable)
• Voltage Range: 2.495V minimum to 36V maximum output capability
• Current Rating: 100 mA output current capacity
• Current - Cathode: 1 mA minimum cathode current
• Package: SOT-23-5 (SC-74A, SOT-753) surface mount configuration
• Compliance: ROHS3 compliant, REACH unaffected

Substitutes are classified into two categories: direct replacements with equivalent specifications and upgrades offering extended temperature ranges or improved tolerance characteristics while maintaining functional compatibility.

Parameter Comparison

Engineering Selection Recommendations

TL431CL5T (Direct Substitute): This STMicroelectronics part provides equivalent electrical specifications with identical voltage range, current capacity, and tolerance characteristics. Product status is active with 4100 units in stock. Operating temperature range matches the original specification (0°C ~ 70°C). Selection is appropriate for applications requiring direct pin-compatible replacement with maintained performance parameters.

TL431IL5T (Upgrade Substitute): This STMicroelectronics variant offers extended operating temperature range (-40°C ~ 105°C) compared to the original specification, enabling deployment in wider environmental conditions. Electrical specifications remain equivalent with 9200 units available. This option is suitable for designs requiring enhanced temperature performance while maintaining functional compatibility.

AS431BKTR-G1 (MFR Recommended Substitute): Manufactured by Diodes Incorporated, this part delivers superior tolerance specification (±1% versus ±2.2%) and extended operating temperature range (-40°C ~ 125°C). Temperature coefficient is specified at 20ppm/°C typical. All critical electrical parameters remain compatible. Moisture sensitivity level is MSL 3 (168 hours). This option is recommended for applications requiring improved accuracy and maximum temperature coverage. Stock availability is 4122 units.

All substitutes maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory compatibility with the original component.

Frequently Asked Questions (FAQ)

Q: Can TL431CL5T replace TL431CDBVRE4 in existing designs? A: Yes. TL431CL5T is a direct substitute with identical electrical specifications, voltage range, current capacity, tolerance, and SOT-23-5 package configuration. Operating temperature range is equivalent (0°C ~ 70°C).

Q: What is the primary advantage of TL431IL5T over the original part? A: TL431IL5T extends the operating temperature range to -40°C ~ 105°C, enabling operation in wider environmental conditions while maintaining all other electrical specifications.

Q: Why is AS431BKTR-G1 classified as MFR recommended? A: AS431BKTR-G1 offers improved tolerance (±1% versus ±2.2%), extended temperature range (-40°C ~ 125°C), and specified temperature coefficient (20ppm/°C typical). These enhancements provide superior performance while maintaining functional compatibility.

Q: Are all substitutes available in SOT-23-5 packaging? A: Yes. All listed substitutes use SC-74A, SOT-753 (SOT-23-5) surface mount packaging, ensuring mechanical and electrical compatibility with existing PCB layouts.

Q: What is the significance of MSL rating differences? A: TL431CDBVRE4, TL431CL5T, and TL431IL5T have MSL 1 (unlimited shelf life). AS431BKTR-G1 has MSL 3 (168-hour floor life after moisture exposure). MSL 3 components require controlled storage and handling procedures.

Q: Do all substitutes maintain ROHS3 compliance? A: Yes. All listed substitutes are ROHS3 compliant and REACH unaffected, matching the regulatory status of the original component.

Q: Can substitutes be used interchangeably in the same circuit? A: Yes, provided the application operating temperature range does not exceed 0°C ~ 70°C. For applications requiring extended temperature operation, TL431IL5T or AS431BKTR-G1 are required.