TL432ACDBVRG4 Equivalent & Substitute Parts

Part Overview

The TL432ACDBVRG4 is a shunt voltage reference IC manufactured by Texas Instruments, designed for precision voltage regulation applications. This adjustable reference provides a fixed output of 2.495V with a maximum rating of 36V and supports output currents up to 100 mA in a compact SOT-23-5 surface mount package. The device is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. Suitable alternatives must maintain compatibility across electrical specifications, package form factor, and thermal operating ranges.

Substiute Parts

TL432ACDBVRG4

Texas InstrumentsIn Stock: 1211TL432ACDBVRG4 Datasheet

Current PartRFQ

AS431BKTR-G1

Diodes IncorporatedIn Stock: 4229AS431BKTR-G1 Datasheet

MFR RecommendedRFQ

TL431AMFDT,215

NXP SemiconductorsIn Stock: 4125TL431AMFDT,215 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TL432ACDBVRG4 are qualified based on the following critical parameters that determine functional equivalence:

Electrical Compatibility Requirements:

• Reference Type: Shunt voltage reference
• Output Type: Adjustable
• Voltage - Output (Min/Fixed): 2.495V or 2.5V (within acceptable tolerance range)
• Voltage - Output (Max): 36 V
• Current - Output: 100 mA
• Tolerance: ±1%
• Package / Case: SC-74A, SOT-753 or equivalent SOT-23-5 form factor

Mechanical & Environmental Compatibility:

• Mounting Type: Surface Mount
• Supplier Device Package: SOT-23-5 or compatible pinout
• RoHS Status: ROHS3 Compliant

The identified substitute parts maintain these core specifications while offering extended operating temperature ranges and improved availability as active products.

Parameter Comparison

Engineering Selection Recommendations

AS431BKTR-G1 (Diodes Incorporated): This substitute maintains full electrical equivalence with the TL432ACDBVRG4 across all critical parameters. The device is currently in active production status, ensuring long-term availability. It offers an extended operating temperature range of -40°C to 125°C, providing superior thermal performance compared to the original part's 0°C to 70°C range. The AS431BKTR-G1 is supplied in Tape & Reel packaging and maintains ROHS3 compliance. The cathode current specification of 1 mA differs from the original 600 µA but remains within acceptable operating margins for shunt reference applications. MSL rating of 3 (168 Hours) requires standard moisture control during storage and assembly.

TL431AMFDT,215 (NXP Semiconductors): This substitute provides electrical equivalence with identical voltage output specifications (2.495V minimum) and current ratings (100 mA output, 600 µA cathode). The device is actively produced by NXP and offers an extended operating temperature range of -40°C to 125°C. It maintains ROHS3 compliance and MSL rating of 1 (Unlimited), matching the original part's moisture sensitivity profile. The package designation differs (TO-236AB versus SOT-23-5), requiring verification of PCB layout compatibility and pin assignment alignment before implementation.

Both substitutes are ROHS3 compliant and REACH unaffected, meeting regulatory requirements for the TL432ACDBVRG4 application space.

Frequently Asked Questions (FAQ)

Q: Can AS431BKTR-G1 directly replace TL432ACDBVRG4 in existing designs?

A: Yes, the AS431BKTR-G1 maintains electrical equivalence across all critical shunt reference parameters: 2.5V output (within ±1% tolerance of the 2.495V specification), 36V maximum rating, 100 mA output current, and SOT-23-5 package form factor. The extended operating temperature range (-40°C to 125°C) provides additional thermal margin. Verify PCB layout compatibility with the Tape & Reel packaging format.

Q: What is the difference between TL431AMFDT,215 and TL432ACDBVRG4 packages?

A: The TL431AMFDT,215 uses TO-236AB packaging (equivalent to SC-59 or SOT-23-3), while the TL432ACDBVRG4 uses SOT-23-5. Both are surface mount packages, but pinout and PCB footprint differ. Confirm pin assignment compatibility and PCB layout modifications before substitution.

Q: Why does AS431BKTR-G1 have a higher cathode current specification (1 mA vs. 600 µA)?

A: The cathode current specification represents the minimum operating current for the shunt reference. The AS431BKTR-G1's 1 mA specification is within acceptable operating margins for shunt voltage reference applications and does not compromise functional equivalence. Circuit design should accommodate this specification within the application's current budget.

Q: Are all three parts ROHS3 compliant?

A: Yes, all three parts—TL432ACDBVRG4, AS431BKTR-G1, and TL431AMFDT,215—are ROHS3 compliant and REACH unaffected, meeting regulatory requirements for electronic component applications.

Q: What is the significance of MSL rating differences between the substitutes?

A: The TL432ACDBVRG4 and TL431AMFDT,215 have MSL 1 (Unlimited), meaning no moisture sensitivity restrictions during storage. The AS431BKTR-G1 has MSL 3 (168 Hours), requiring standard moisture control measures during storage and assembly. Both ratings are standard for surface mount components and do not affect functional performance if proper handling procedures are followed.