TL431ACDBVRG4 Equivalent & Substitute Parts

Part Overview

The TL431ACDBVRG4 is a shunt voltage reference IC with adjustable output, manufactured by Texas Instruments. This component is classified as obsolete, which necessitates identification of equivalent and substitute parts for ongoing design support and procurement. The TL431ACDBVRG4 operates as an adjustable shunt regulator suitable for precision voltage reference applications in power management circuits. Equivalent parts maintain identical electrical and mechanical specifications, while substitute parts offer compatible performance within defined parameter tolerances.

Substiute Parts

TL431ACDBVRG4

Texas InstrumentsIn Stock: 6384TL431ACDBVRG4 Datasheet

Current PartRFQ

TL431ACDBVR

Texas InstrumentsIn Stock: 78193TL431ACDBVR Datasheet

MFR RecommendedRFQ

TL431AIL5T

STMicroelectronicsIn Stock: 4462TL431AIL5T Datasheet

UpgradeRFQ

AS431BKTR-G1

Diodes IncorporatedIn Stock: 4229AS431BKTR-G1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TL431ACDBVRG4 is determined by strict equivalence of the following critical parameters:

• Reference Type: Shunt
• Output Type: Adjustable
• Voltage - Output (Min/Fixed): 2.495V or 2.5V
• Voltage - Output (Max): 36 V
• Current - Output: 100 mA
• Tolerance: ±1%
• Package / Case: SC-74A, SOT-753
• Supplier Device Package: SOT-23-5
• Mounting Type: Surface Mount
• RoHS Status: ROHS3 Compliant

Substitute parts are grouped into two categories: MFR Recommended equivalents from the original manufacturer (Texas Instruments) and cross-manufacturer alternatives that maintain electrical compatibility within the specified parameter range. All substitute parts listed maintain the same functional classification as Power Management (PMIC) shunt voltage reference ICs.

Parameter Comparison

Engineering Selection Recommendations

The TL431ACDBVRG4 is classified as obsolete. Direct replacement with the TL431ACDBVR is recommended as the primary equivalent, as it maintains identical electrical specifications and operating temperature range while offering active product status and significantly higher inventory availability (78,100 units in stock versus 6,320 units for the obsolete part).

The TL431AIL5T from STMicroelectronics provides an upgrade path with extended operating temperature range (-40°C to 105°C versus 0°C to 70°C), making it suitable for applications requiring broader thermal performance. This part maintains all critical electrical parameters and ROHS3 compliance.

The AS431BKTR-G1 from Diodes Incorporated offers the widest operating temperature range (-40°C to 125°C) and is suitable for demanding thermal environments. The minimum output voltage specification of 2.5V (versus 2.495V) represents a negligible deviation within the ±1% tolerance band. Cathode current specification of 1 mA differs from the main part's 600 µA specification; this parameter variation must be evaluated against specific circuit requirements. Moisture sensitivity level MSL-3 requires controlled storage conditions (168 hours maximum exposure at 85°C/85% RH).

All substitute parts maintain ROHS3 compliance, REACH unaffected status, and identical package specifications (SC-74A, SOT-753, SOT-23-5).

Frequently Asked Questions (FAQ)

Q: Can TL431ACDBVR be used as a direct replacement for TL431ACDBVRG4?

A: Yes. The TL431ACDBVR is electrically and mechanically identical to the TL431ACDBVRG4, with matching voltage output range (2.495V to 36V), current output (100 mA), tolerance (±1%), operating temperature (0°C to 70°C), and package specifications (SOT-23-5). The primary difference is product status: TL431ACDBVR is active with higher inventory availability.

Q: What is the difference between TL431AIL5T and TL431ACDBVRG4?

A: The TL431AIL5T maintains identical electrical specifications but extends the operating temperature range to -40°C to 105°C. Cathode current is specified at 700 µA versus 600 µA. The manufacturer is STMicroelectronics rather than Texas Instruments. Both parts are ROHS3 compliant and use the same SOT-23-5 package.

Q: Is AS431BKTR-G1 compatible with TL431ACDBVRG4?

A: The AS431BKTR-G1 is functionally compatible for shunt voltage reference applications. Key differences include: minimum output voltage of 2.5V (within ±1% tolerance of 2.495V specification), cathode current of 1 mA (versus 600 µA), extended operating temperature range (-40°C to 125°C), and MSL-3 moisture sensitivity requiring controlled storage. These parameters must be evaluated against specific circuit design requirements.

Q: Are all substitute parts available in SOT-23-5 package?

A: Yes. All substitute parts listed—TL431ACDBVR, TL431AIL5T, and AS431BKTR-G1—are available in SOT-23-5 package (SC-74A, SOT-753 case designation) with surface mount mounting type, ensuring mechanical compatibility with existing PCB designs.

Q: What is the significance of product status (Obsolete vs. Active)?

A: Product status indicates manufacturing and support availability. The TL431ACDBVRG4 is obsolete, meaning Texas Instruments no longer manufactures this part. Substitute parts with Active status (TL431ACDBVR, TL431AIL5T, AS431BKTR-G1) are currently manufactured and supported, ensuring long-term procurement availability and technical support.

Q: Do all substitute parts meet ROHS3 compliance?

A: Yes. All substitute parts listed—TL431ACDBVR, TL431AIL5T, and AS431BKTR-G1—are ROHS3 compliant and REACH unaffected, meeting environmental regulatory requirements equivalent to the original TL431ACDBVRG4.