TLV431ASNT1 Equivalent & Substitute Parts

Part Overview

The TLV431ASNT1 is a shunt voltage reference IC manufactured by onsemi, designed for adjustable voltage regulation applications. This component provides a fixed minimum output of 1.24V with a maximum output of 16V, delivering up to 20mA output current with ±1% tolerance. The part is currently classified as obsolete, making identification of suitable substitute components essential for ongoing design support and production continuity.

Substiute Parts

TLV431ASNT1

onsemiIn Stock: 6953TLV431ASNT1 Datasheet

Current PartRFQ

TLV431ASNT1G

onsemiIn Stock: 17181TLV431ASNT1G Datasheet

DirectRFQ

TLV431AE5TA

Diodes IncorporatedIn Stock: 20202TLV431AE5TA Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TLV431ASNT1 is determined by the following critical parameters:

• Reference Type: Shunt (must match)
• Output Type: Adjustable (must match)
• Voltage - Output (Min/Fixed): 1.24V (must match)
• Tolerance: ±1% (must match)
• Mounting Type: Surface Mount (must match)

Substitute parts may vary in the following parameters within acceptable engineering limits:

• Voltage - Output (Max): 16V or higher
• Current - Output: 20mA or higher
• Current - Cathode: 80µA or higher
• Operating Temperature: -40°C ~ 85°C or wider range
• Package / Case: SOT-23-5 or equivalent pinout-compatible packages
• RoHS Status: May differ from original

Parameter Comparison

Engineering Selection Recommendations

TLV431ASNT1G is the primary substitute for the obsolete TLV431ASNT1. Both parts are manufactured by onsemi with identical electrical specifications and package configurations. TLV431ASNT1G maintains active product status and achieves ROHS3 compliance, addressing regulatory requirements while preserving full functional compatibility. This part is available in higher inventory quantities (17,100 units) compared to the original.

TLV431AE5TA, manufactured by Diodes Incorporated, serves as an alternative substitute when onsemi sourcing is constrained. This part meets all critical substitution criteria with the following distinctions: maximum output voltage of 18V (exceeds the 16V requirement), slightly reduced output current of 15mA (versus 20mA), and extended operating temperature range to 125°C. The package configuration differs (SC-74A, SOT-753 versus SOT-23-5), requiring PCB layout verification for mechanical compatibility. This part also achieves ROHS3 compliance and maintains active product status with substantial inventory availability (20,129 units).

Frequently Asked Questions (FAQ)

Q: Can TLV431ASNT1G be used as a direct replacement for TLV431ASNT1?

A: Yes. TLV431ASNT1G is a direct substitute with identical electrical specifications, reference type, output type, voltage range, current ratings, tolerance, and package configuration. The primary difference is product status (active versus obsolete) and RoHS compliance improvement.

Q: What are the limitations of using TLV431AE5TA as a substitute?

A: TLV431AE5TA meets all critical electrical substitution criteria. The package differs (SC-74A/SOT-753 versus SOT-23-5), requiring verification of PCB footprint compatibility. Output current is rated at 15mA versus the original 20mA; applications requiring the full 20mA specification must be evaluated. The extended temperature range (-40°C to 125°C) provides additional operational margin.

Q: Are there any compliance differences between the main part and substitutes?

A: The original TLV431ASNT1 is RoHS non-compliant. Both substitute parts (TLV431ASNT1G and TLV431AE5TA) achieve ROHS3 compliance. All three parts maintain REACH Unaffected status and EAR99 export classification.

Q: Which substitute should be selected for new designs?

A: TLV431ASNT1G is recommended for new designs requiring onsemi sourcing. TLV431AE5TA is recommended when multi-source qualification is required or when extended temperature operation (-40°C to 125°C) is beneficial. Both parts are active products with established supply chains.

Q: Are package footprints interchangeable between TLV431ASNT1G and TLV431AE5TA?

A: No. TLV431ASNT1G uses SOT-23-5 (TSOT-23-5) packaging, while TLV431AE5TA uses SC-74A (SOT-753) packaging. PCB layout and footprint verification is required before substitution.