TLV431BCDBZRG4 Equivalent & Substitute Parts

Part Overview

The TLV431BCDBZRG4 is a shunt voltage reference IC manufactured by Texas Instruments, designed for adjustable output voltage regulation in power management applications. This component features an adjustable output range from 1.24V to 6V with ±0.5% tolerance and a maximum cathode current of 100 µA. The part is currently classified as obsolete, making identification of active equivalent alternatives essential for ongoing design support and procurement continuity.

Substiute Parts

TLV431BCDBZRG4

Texas InstrumentsIn Stock: 1473TLV431BCDBZRG4 Datasheet

Current PartRFQ

TLV431BCDBZR

Texas InstrumentsIn Stock: 35169TLV431BCDBZR Datasheet

MFR RecommendedRFQ

TLV431BFTA

Diodes IncorporatedIn Stock: 105284TLV431BFTA Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TLV431BCDBZRG4 are identified based on the following critical electrical and mechanical parameters:

Core Substitution Criteria:

• Reference Type: Shunt (required match)
• Output Type: Adjustable (required match)
• Voltage - Output (Min/Fixed): 1.24V (required match)
• Current - Output: 15 mA (required match)
• Tolerance: ±0.5% (required match)
• Current - Cathode: 100 µA (required match)
• Package / Case: TO-236-3, SC-59, SOT-23-3 (required match)
• Mounting Type: Surface Mount (required match)

Allowable Parameter Variations:

• Voltage - Output (Max): May exceed 6V (higher maximum voltage is acceptable for designs operating within 6V)
• Operating Temperature: May exceed 0°C ~ 70°C range (wider temperature range is acceptable)
• Product Status: Active status preferred over obsolete
• Manufacturer: Alternative manufacturers acceptable if all electrical and mechanical parameters align

Parameter Comparison

Engineering Selection Recommendations

TLV431BCDBZR (Texas Instruments): This part is the direct manufacturer equivalent with identical electrical specifications and operating temperature range. It maintains active product status, ensuring long-term availability and supply chain stability. This is the primary recommended substitute for the obsolete TLV431BCDBZRG4.

TLV431BFTA (Diodes Incorporated): This alternative meets all core electrical and mechanical substitution criteria. The maximum output voltage specification of 18V exceeds the original 6V rating, which is acceptable for applications operating within the 6V design envelope. The extended operating temperature range of -40°C ~ 125°C provides additional thermal margin beyond the original 0°C ~ 70°C specification. This part is suitable for designs requiring broader temperature performance or extended voltage headroom.

Both substitute parts maintain ROHS3 compliance and unlimited moisture sensitivity rating, ensuring regulatory and environmental compatibility with the original design.

Frequently Asked Questions (FAQ)

Q: Can TLV431BCDBZR be used as a direct replacement for TLV431BCDBZRG4?

A: Yes. The TLV431BCDBZR is electrically and mechanically identical to the TLV431BCDBZRG4. All critical parameters including output voltage range (1.24V to 6V), tolerance (±0.5%), output current (15 mA), cathode current (100 µA), and package type (SOT-23-3) are matched. The primary difference is product status: TLV431BCDBZR is active, while TLV431BCDBZRG4 is obsolete.

Q: What is the difference between TLV431BCDBZR and TLV431BFTA?

A: Both parts share identical core electrical specifications (1.24V minimum output, ±0.5% tolerance, 15 mA output current, 100 µA cathode current) and package type (SOT-23-3). The TLV431BFTA differs in two parameters: maximum output voltage (18V versus 6V) and operating temperature range (-40°C ~ 125°C versus 0°C ~ 70°C). The TLV431BFTA is manufactured by Diodes Incorporated rather than Texas Instruments.

Q: Is the higher maximum voltage rating of TLV431BFTA (18V) a concern for designs using 6V?

A: No. The higher maximum voltage specification of the TLV431BFTA does not affect designs operating within the 6V envelope. The adjustable output range remains 1.24V to 6V when configured for such applications. The higher rating provides additional design flexibility without compromising performance in existing circuits.

Q: Are both substitute parts available in the same packaging options?

A: Yes. Both TLV431BCDBZR and TLV431BFTA are supplied in SOT-23-3 surface mount packages with Cut Tape (CT) and Digi-Reel® packaging options available.

Q: Do the substitute parts maintain the same compliance certifications?

A: Yes. Both TLV431BCDBZR and TLV431BFTA are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited), matching the original TLV431BCDBZRG4 specifications.