TLV431ACDBZRG4 Equivalent & Substitute Parts

Part Overview

The TLV431ACDBZRG4 is a shunt voltage reference IC manufactured by Texas Instruments, designed for adjustable output voltage regulation in power management applications. This component provides a fixed minimum output of 1.24V with a maximum output of 6V, delivering up to 15mA output current with ±1% tolerance. The device is packaged in SOT-23-3 (TO-236-3, SC-59) surface mount configuration.

The TLV431ACDBZRG4 is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives. Substitute parts must maintain compatibility across electrical specifications, mechanical packaging, and compliance certifications to ensure direct replacement capability in existing designs.

Substiute Parts

TLV431ACDBZRG4

Texas InstrumentsIn Stock: 6958TLV431ACDBZRG4 Datasheet

Current PartRFQ

TLV431ACDBZR

Texas InstrumentsIn Stock: 54051TLV431ACDBZR Datasheet

MFR RecommendedRFQ

TLV431AFTA

Diodes IncorporatedIn Stock: 181824TLV431AFTA Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TLV431ACDBZRG4 is determined by the following critical parameters:

Primary Compatibility Criteria:

• Reference Type: Shunt (functional equivalence)
• Output Type: Adjustable (circuit topology match)
• Voltage - Output (Min/Fixed): 1.24V (minimum threshold requirement)
• Package / Case: SOT-23-3 (mechanical and pin compatibility)
• Mounting Type: Surface Mount (assembly process compatibility)

Secondary Compatibility Criteria:

• Voltage - Output (Max): Must equal or exceed 6V
• Current - Output: Must equal or exceed 15mA
• Tolerance: ±1% or better
• RoHS Status: ROHS3 Compliant (regulatory requirement)

The identified substitute parts meet these criteria with the following considerations:

TLV431ACDBZR (Texas Instruments): Identical electrical specifications to the main part with active product status and expanded packaging options (Cut Tape and Digi-Reel).

TLV431AFTA (Diodes Incorporated): Meets all primary criteria with enhanced specifications including higher maximum output voltage (18V vs. 6V) and extended operating temperature range (-40°C ~ 125°C vs. 0°C ~ 70°C). Cathode current is 100µA versus 80µA.

Parameter Comparison

Engineering Selection Recommendations

TLV431ACDBZR is the primary recommended substitute. This part maintains identical electrical and thermal specifications to the discontinued TLV431ACDBZRG4 while offering active product status and improved supply chain availability. Both parts are manufactured by Texas Instruments and carry ROHS3 compliance with unlimited moisture sensitivity rating. The TLV431ACDBZR is available in expanded packaging formats (Cut Tape and Digi-Reel), facilitating procurement flexibility.

TLV431AFTA serves as a secondary alternative for applications requiring extended operating temperature range or higher maximum output voltage. Manufactured by Diodes Incorporated, this part exceeds the electrical requirements of the original specification with 18V maximum output versus 6V, and supports operation from -40°C to 125°C. The 100µA cathode current represents a minor increase from the 80µA specification. This part is suitable for designs where thermal or voltage headroom requirements exceed the original specification.

Both substitute parts maintain SOT-23-3 packaging compatibility, ensuring direct mechanical and electrical substitution without PCB redesign. Selection between TLV431ACDBZR and TLV431AFTA depends on application-specific thermal and voltage requirements.

Frequently Asked Questions (FAQ)

Q: Can TLV431ACDBZR directly replace TLV431ACDBZRG4 without circuit modification?

A: Yes. The TLV431ACDBZR provides identical electrical specifications including output voltage range (1.24V to 6V), output current (15mA), tolerance (±1%), and operating temperature (0°C to 70°C). Both parts use SOT-23-3 packaging with identical pinout. No circuit modification is required.

Q: What are the key differences between TLV431ACDBZR and TLV431AFTA?

A: The primary differences are maximum output voltage (6V vs. 18V), operating temperature range (0°C ~ 70°C vs. -40°C ~ 125°C), and cathode current (80µA vs. 100µA). Both maintain the same minimum output voltage (1.24V), output current (15mA), and tolerance (±1%). The TLV431AFTA is suitable for applications requiring extended thermal or voltage specifications.

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

A: Both substitute parts are available in SOT-23-3 (TO-236-3, SC-59) surface mount packaging. The TLV431ACDBZR offers additional packaging formats including Cut Tape and Digi-Reel options, providing procurement flexibility.

Q: Do the substitute parts maintain RoHS and compliance certifications?

A: Yes. Both TLV431ACDBZR and TLV431AFTA are ROHS3 compliant with MSL rating of 1 (Unlimited). Both carry REACH Unaffected status and EAR99 ECCN classification, matching the original part's regulatory profile.

Q: Which substitute should be selected for a new design?

A: For designs matching the original thermal and voltage specifications, TLV431ACDBZR is recommended due to identical electrical characteristics and active product status from the original manufacturer. For designs requiring extended temperature range or higher voltage capability, TLV431AFTA provides enhanced specifications while maintaining functional compatibility.