TL431AQDBVRDN Equivalent & Substitute Parts

Part Overview

The TL431AQDBVRDN is a shunt voltage reference IC in SOT-23-5 packaging, classified as a Power Management (PMIC) component. This part is designated as Last Time Buy, indicating end-of-life status. Due to this product status, identifying functionally equivalent substitute parts is essential for design continuity and procurement planning. The TL431AQDBVRDN serves as an adjustable shunt voltage reference with fixed output characteristics suitable for precision voltage regulation applications.

Substiute Parts

TL431AQDBVRDN

Texas InstrumentsIn Stock: 698TL431AQDBVRDN Datasheet

Current PartRFQ

TL431AQDBVRQ1

Texas InstrumentsIn Stock: 20195TL431AQDBVRQ1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the TL431AQDBVRDN is determined by the following critical parameters:

• Reference Type: Shunt voltage reference
• Output Type: Adjustable
• Output Voltage Range: 2.495V to 36V
• Output Current: 100 mA
• Tolerance: ±1%
• Package: SOT-23-5 (SC-74A, SOT-753)
• Compliance: ROHS3 Compliant, REACH Unaffected
• Operating Temperature: -40°C to 125°C

The substitute part TL431AQDBVRQ1 maintains identical electrical specifications and packaging, differing only in product status and availability. Both parts share the same base product number (TL431) and are manufactured by Texas Instruments.

Parameter Comparison

Engineering Selection Recommendations

The TL431AQDBVRQ1 is the direct substitute for the TL431AQDBVRDN. Both parts are ROHS3 compliant and REACH unaffected, meeting equivalent regulatory requirements. The primary distinction is product status: the TL431AQDBVRDN is Last Time Buy, while the TL431AQDBVRQ1 maintains Active status with significantly higher inventory availability (20,100 pcs vs. 627 pcs). For new designs or long-term production requirements, the TL431AQDBVRQ1 is the appropriate selection due to its active product lifecycle status and supply continuity.

Frequently Asked Questions (FAQ)

Q: Can TL431AQDBVRQ1 directly replace TL431AQDBVRDN in existing designs?

A: Yes. Both parts share identical electrical specifications, tolerance, operating temperature range, and SOT-23-5 packaging. No circuit modifications are required for substitution.

Q: What is the difference between these two part numbers?

A: The primary difference is product lifecycle status. TL431AQDBVRDN is Last Time Buy (end-of-life), while TL431AQDBVRQ1 is Active. Electrical performance and packaging are identical.

Q: Are there any compliance differences between the two parts?

A: No. Both parts are ROHS3 compliant and REACH unaffected, meeting identical regulatory standards.

Q: Why should I transition from TL431AQDBVRDN to TL431AQDBVRQ1?

A: The TL431AQDBVRDN is designated Last Time Buy, indicating limited future availability. TL431AQDBVRQ1 maintains active production status with substantially higher inventory levels, ensuring supply continuity for current and future production runs.

Q: Are the package designations SC-74A and SOT-753 equivalent to SOT-23-5?

A: Yes. SC-74A and SOT-753 are alternative designations for the same SOT-23-5 package form factor used in surface mount applications.