LMV431BCZ/NOPB Equivalent & Substitute Parts

Part Overview

The LMV431BCZ/NOPB is a shunt voltage reference IC manufactured by Texas Instruments, designed for adjustable voltage reference applications. This component operates with a fixed output of 1.24V and supports maximum output voltage up to 30V, delivering 15mA output current. The part is classified as obsolete, necessitating identification of active equivalent alternatives for new designs and ongoing production requirements.

Substiute Parts

LMV431BCZ/NOPB

Texas InstrumentsIn Stock: 1038LMV431BCZ/NOPB Datasheet

Current PartRFQ

LMV431AIZ/NOPB

Texas InstrumentsIn Stock: 2423LMV431AIZ/NOPB Datasheet

MFR RecommendedRFQ

LMV431CZ/NOPB

Texas InstrumentsIn Stock: 1207LMV431CZ/NOPB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LMV431BCZ/NOPB is determined by strict equivalence across the following critical parameters:

• Reference Type: Shunt voltage reference
• Output Type: Adjustable
• Voltage - Output (Min/Fixed): 1.24V
• Voltage - Output (Max): 30V
• Current - Output: 15mA
• Current - Cathode: 80µA
• Mounting Type: Through Hole
• Package / Case: TO-92-3

The substitute parts identified maintain identical electrical specifications for these core parameters. Variations in tolerance (±0.5% vs. ±1% vs. ±1.5%), operating temperature range, and product status are documented to enable informed selection based on application requirements.

Parameter Comparison

Engineering Selection Recommendations

The LMV431BCZ/NOPB is obsolete and should be replaced with active alternatives for new designs and production continuity.

LMV431AIZ/NOPB is the primary recommended substitute. This part maintains identical electrical and mechanical specifications while offering extended operating temperature range (-40°C ~ 85°C) and active product status. The tolerance specification of ±1% represents a relaxation from the original ±0.5%, suitable for applications where the tighter tolerance is not a functional requirement.

LMV431CZ/NOPB is an alternative substitute with identical operating temperature range to the original part (0°C ~ 70°C) and active product status. The tolerance specification of ±1.5% represents further relaxation from the original ±0.5%, applicable to designs with less stringent voltage reference accuracy requirements.

Both substitutes are ROHS3 compliant and maintain the same TO-92-3 package configuration, enabling direct mechanical and electrical replacement in existing circuit designs.

Frequently Asked Questions (FAQ)

Q: Can LMV431AIZ/NOPB directly replace LMV431BCZ/NOPB?

A: Yes. Both parts share identical electrical specifications for reference type, output voltage range, output current, cathode current, and package configuration. The primary differences are product status (active vs. obsolete), tolerance (±1% vs. ±0.5%), and operating temperature range (-40°C ~ 85°C vs. 0°C ~ 70°C). Direct substitution is electrically and mechanically compatible.

Q: What is the impact of tolerance differences between substitute parts?

A: The main part specifies ±0.5% tolerance, LMV431AIZ/NOPB specifies ±1%, and LMV431CZ/NOPB specifies ±1.5%. Applications requiring the original ±0.5% accuracy should evaluate whether the relaxed tolerance of substitute parts meets circuit performance requirements. Tolerance selection depends on downstream circuit sensitivity to voltage reference variations.

Q: Are all substitute parts available in the same package?

A: Yes. All parts are packaged in TO-92-3 (TO-226AA), enabling direct mechanical replacement without PCB layout modifications.

Q: Why is operating temperature range different between substitutes?

A: LMV431AIZ/NOPB extends the operating range to -40°C ~ 85°C, providing broader environmental coverage. LMV431CZ/NOPB maintains the original 0°C ~ 70°C range. Selection depends on the target application's thermal operating envelope.

Q: Are all substitute parts RoHS compliant?

A: Yes. All parts listed are ROHS3 compliant, meeting environmental and regulatory requirements for electronic component manufacturing and use.