TL431IDBVRE4 Equivalent & Substitute Parts

Part Overview

The TL431IDBVRE4 is a shunt voltage reference IC with adjustable output, manufactured by Texas Instruments in SOT-23-5 surface mount packaging. This component functions as a precision voltage reference for power management applications, offering adjustable output from 2.495V to 36V with ±2.2% tolerance and 100mA output current capability.

The TL431IDBVRE4 is classified 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 IC.

Key Parameters

Parameter	Value
Reference Type	Shunt
Output Type	Adjustable
Voltage - Output (Min/Fixed)	2.495V
Voltage - Output (Max)	36V
Current - Output	100mA
Tolerance	±2.2%
Current - Cathode	1mA
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Package / Case	SC-74A, SOT-753
Supplier Device Package	SOT-23-5
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the TL431IDBVRE4 is determined by the following critical parameters:

Reference Type: Shunt
Output Type: Adjustable
Voltage Range: 2.495V minimum to 36V maximum
Output Current: 100mA
Tolerance: ±2.2% or better
Cathode Current: 1mA
Package: SOT-23-5 (SC-74A, SOT-753)
Mounting: Surface Mount
Compliance: ROHS3, REACH Unaffected

Substitute parts must maintain electrical compatibility across these parameters. Variations in tolerance, operating temperature range, and product status are documented but do not preclude substitution when the core electrical specifications align.

Parameter Comparison

Parameter	TL431IDBVRE4 (Main)	TL431IDBVR (MFR Recommended)	TL431IL5T (Upgrade)	AS431BKTR-G1 (MFR Recommended)
Manufacturer	Texas Instruments	Texas Instruments	STMicroelectronics	Diodes Incorporated
Product Status	Obsolete	Active	Active	Active
Reference Type	Shunt	Shunt	Shunt	Shunt
Output Type	Adjustable	Adjustable	Adjustable	Adjustable
Voltage - Output (Min/Fixed)	2.495V	2.495V	2.495V	2.5V
Voltage - Output (Max)	36V	36V	36V	36V
Current - Output	100mA	100mA	100mA	100mA
Tolerance	±2.2%	±2.2%	±2.21%	±1%
Current - Cathode	1mA	1mA	1mA	1mA
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 105°C	-40°C ~ 125°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	SC-74A, SOT-753	SC-74A, SOT-753	SC-74A, SOT-753	SC-74A, SOT-753
Supplier Device Package	SOT-23-5	SOT-23-5	SOT-23-5	SOT-23-5
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	3 (168 Hours)

Engineering Selection Recommendations

TL431IDBVR (Texas Instruments) is the manufacturer-recommended direct substitute. This part maintains identical electrical specifications and operating temperature range while offering active product status and improved supply availability. Packaging is available in Cut Tape and Digi-Reel formats.

TL431IL5T (STMicroelectronics) provides an upgrade path with extended operating temperature range (-40°C to 105°C) and equivalent tolerance performance. This part is actively manufactured and suitable for applications requiring broader temperature operation.

AS431BKTR-G1 (Diodes Incorporated) offers superior tolerance performance at ±1% and the widest operating temperature range (-40°C to 125°C). This part is actively produced and available in Tape & Reel packaging. The MSL rating of 3 requires adherence to 168-hour moisture exposure limits during storage and handling.

All substitute parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment with the original component.

Frequently Asked Questions (FAQ)

Q: Can TL431IDBVR be used as a direct replacement for TL431IDBVRE4?

A: Yes. TL431IDBVR is the manufacturer-recommended substitute with identical electrical specifications, tolerance, output voltage range, current ratings, and operating temperature range. Both are packaged in SOT-23-5 with identical pinout and mechanical dimensions.

Q: What is the difference between TL431IL5T and the original part?

A: TL431IL5T maintains the same electrical performance and tolerance but extends the operating temperature range to -40°C to 105°C compared to -40°C to 85°C. The manufacturer is STMicroelectronics rather than Texas Instruments. Tolerance is ±2.21%, functionally equivalent to ±2.2%.

Q: Why would AS431BKTR-G1 be selected over other substitutes?

A: AS431BKTR-G1 provides tighter tolerance (±1% versus ±2.2%) and the widest operating temperature range (-40°C to 125°C). Selection depends on application requirements for accuracy and thermal performance. The MSL-3 rating requires proper moisture control during storage.

Q: Are all substitutes pin-compatible?

A: Yes. All substitute parts use the SOT-23-5 package with identical pin configuration and mechanical footprint, enabling direct PCB replacement without layout modifications.

Q: What packaging options are available for each substitute?

A: TL431IDBVR is available in Cut Tape and Digi-Reel formats. TL431IL5T packaging details are not specified in the provided data. AS431BKTR-G1 is supplied in Tape & Reel packaging.

Q: Do all substitutes meet the same compliance standards?

A: Yes. All substitute parts are ROHS3 compliant and REACH unaffected, matching the original component's regulatory status.

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