TLV431ILP Equivalent & Substitute Parts

Part Overview

The TLV431ILP is a shunt voltage reference IC with adjustable output, manufactured by Texas Instruments. It provides a precision 1.24V to 6V adjustable reference with ±1.5% tolerance and 15 mA output current capability in a through-hole TO-92-3 package. The device is classified as Last Time Buy, indicating production discontinuation. Identifying equivalent substitute parts is necessary to ensure design continuity and maintain supply chain reliability for applications requiring this reference voltage functionality.

Substiute Parts

TLV431ILP

Texas InstrumentsIn Stock: 823TLV431ILP Datasheet

Current PartRFQ

TLV431IDBZR

Texas InstrumentsIn Stock: 21506TLV431IDBZR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLV431ILP is determined by electrical parameter equivalence across the following criteria:

• Reference type (Shunt) and output type (Adjustable) must remain identical
• Voltage output range (1.24V minimum to 6V maximum) must be maintained
• Current output (15 mA) and cathode current (80 µA) specifications must match
• Tolerance (±1.5%) must be preserved
• Operating temperature range (-40°C ~ 85°C) must be supported
• RoHS3 compliance and REACH unaffected status must be maintained

The TLV431IDBZR shares all electrical specifications with the TLV431ILP. The primary difference is packaging: TLV431IDBZR uses surface-mount SOT-23-3 instead of through-hole TO-92-3. This substitution is valid only when circuit board layout and assembly process accommodate surface-mount technology.

Parameter Comparison

Engineering Selection Recommendations

The TLV431IDBZR is the active production equivalent to the TLV431ILP. Both devices maintain identical electrical specifications and regulatory compliance (ROHS3, REACH unaffected). Selection between these parts depends on circuit implementation:

• Use TLV431ILP for through-hole assembly processes or when existing PCB layouts require TO-92-3 package compatibility
• Use TLV431IDBZR for surface-mount assembly processes or new designs, as it is in active production status with higher inventory availability (21,400 units versus 741 units)

The transition from through-hole to surface-mount packaging does not affect electrical performance or functional compatibility within the circuit design.

Frequently Asked Questions (FAQ)

Q: Can TLV431IDBZR replace TLV431ILP in existing designs?

A: Electrical substitution is valid. The TLV431IDBZR provides identical voltage reference performance, output current, tolerance, and operating temperature range. Physical substitution requires PCB redesign to accommodate SOT-23-3 surface-mount package instead of TO-92-3 through-hole package.

Q: What are the key electrical parameters that define substitution compatibility?

A: Shunt reference type, adjustable output type, 1.24V to 6V output range, 15 mA output current, ±1.5% tolerance, and 80 µA cathode current must all be matched. Operating temperature range (-40°C ~ 85°C) and regulatory compliance (ROHS3, REACH unaffected) must also be maintained.

Q: Why is TLV431ILP marked as Last Time Buy?

A: Last Time Buy status indicates Texas Instruments has discontinued production of the TLV431ILP in TO-92-3 through-hole package. The TLV431IDBZR in SOT-23-3 surface-mount package is the active production alternative.

Q: Are there differences in moisture sensitivity between these parts?

A: TLV431ILP has moisture sensitivity level not applicable. TLV431IDBZR has MSL 1 (Unlimited), indicating superior moisture resistance for surface-mount applications.

Q: Can both parts be used interchangeably in the same circuit board?

A: No. These parts require different PCB layouts and assembly processes due to package differences. Through-hole and surface-mount components cannot occupy the same physical location on a circuit board.