LMV431AIMFX Equivalent & Substitute Parts

Part Overview

The LMV431AIMFX is a shunt voltage reference IC manufactured by Texas Instruments, classified as a Power Management (PMIC) component. This adjustable reference device operates with a minimum output voltage of 1.24V and maximum output voltage of 30V, 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 LMV431AIMFX carries a Last Time Buy product status, indicating discontinued production. This status necessitates identification of equivalent substitute parts to ensure design continuity and procurement availability for new production runs and field replacements.

Substiute Parts

LMV431AIMFX

Texas InstrumentsIn Stock: 54749LMV431AIMFX Datasheet

Current PartRFQ

LMV431AIMFX/NOPB

Texas InstrumentsIn Stock: 54914LMV431AIMFX/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LMV431AIMFX is determined by strict equivalence across the following critical parameters:

• Reference Type: Shunt
• Output Type: Adjustable
• Voltage - Output (Min/Fixed): 1.24V
• Voltage - Output (Max): 30V
• Current - Output: 15mA
• Tolerance: ±1%
• Current - Cathode: 80µA
• Operating Temperature Range: -40°C ~ 85°C (TA)
• Package / Case: TO-236-3, SC-59, SOT-23-3
• Mounting Type: Surface Mount

The LMV431AIMFX/NOPB qualifies as a direct substitute, maintaining identical electrical specifications and packaging. The TLV431AFTA represents an alternative from the same manufacturer family with equivalent functional parameters within the defined operating envelope.

Parameter Comparison

Engineering Selection Recommendations

The LMV431AIMFX/NOPB is the primary substitute for the LMV431AIMFX. Both parts are manufactured by Texas Instruments with identical electrical and mechanical specifications. The key distinction is product status: the original part is Last Time Buy while the /NOPB variant maintains Active status with current production availability. Both parts carry ROHS3 compliance and MSL Level 1 rating, ensuring regulatory and environmental compatibility.

The TLV431AFTA serves as an alternative substitute within the Texas Instruments reference IC family. This part maintains all critical electrical parameters and packaging requirements while offering Active product status. Selection between LMV431AIMFX/NOPB and TLV431AFTA should be based on procurement availability and inventory requirements, as both satisfy the functional and compliance specifications of the original part.

Frequently Asked Questions (FAQ)

Q: Can the LMV431AIMFX/NOPB be used as a direct replacement for the LMV431AIMFX?

A: Yes. The LMV431AIMFX/NOPB is a direct substitute with identical electrical specifications, output voltage range (1.24V to 30V), output current (15mA), tolerance (±1%), and SOT-23-3 packaging. The /NOPB designation indicates lead-free plating and Active product status.

Q: What is the difference between the LMV431AIMFX and LMV431AIMFX/NOPB?

A: The primary difference is product status. The LMV431AIMFX is Last Time Buy (discontinued), while the LMV431AIMFX/NOPB is Active with ongoing production. Electrical and mechanical specifications are identical.

Q: Is the TLV431AFTA compatible with designs using the LMV431AIMFX?

A: Yes. The TLV431AFTA maintains equivalent electrical specifications including adjustable output voltage (1.24V to 30V), 15mA output current, ±1% tolerance, and SOT-23-3 packaging. It is suitable for applications requiring shunt voltage reference functionality within the specified operating parameters.

Q: Are all three parts (LMV431AIMFX, LMV431AIMFX/NOPB, TLV431AFTA) pin-compatible?

A: Yes. All three parts use the SOT-23-3 package with identical pinout configuration, enabling direct PCB-level substitution without layout modifications.

Q: What compliance certifications apply to these substitute parts?

A: All three parts are ROHS3 compliant and carry Moisture Sensitivity Level 1 (Unlimited), indicating no moisture sensitivity restrictions during storage and handling.

Q: Which substitute part should be selected for new production designs?

A: For new production, select either the LMV431AIMFX/NOPB or TLV431AFTA, both carrying Active product status. Verify current procurement availability and lead times with your component supplier to determine the optimal selection.