LM431CCM3X Equivalent & Substitute Parts

Part Overview

The LM431CCM3X is a shunt voltage reference IC manufactured by Texas Instruments, classified as a Power Management (PMIC) component. This adjustable reference provides a 2.5V to 37V output with ±0.6%/+0.4% tolerance in a SOT-23-3 surface mount package. The part is currently in Last Time Buy status, indicating end-of-life production. Identifying equivalent and substitute parts is necessary to ensure design continuity and maintain supply chain flexibility for ongoing production and maintenance applications.

Substiute Parts

LM431CCM3X

Texas InstrumentsIn Stock: 26973LM431CCM3X Datasheet

Current PartRFQ

LM431CCM3/NOPB

Texas InstrumentsIn Stock: 41254LM431CCM3/NOPB Datasheet

Parametric EquivalentRFQ

LM431CCM3X/NOPB

Texas InstrumentsIn Stock: 41364LM431CCM3X/NOPB Datasheet

Parametric EquivalentRFQ

AS431HMANTR-G1

Diodes IncorporatedIn Stock: 5000277AS431HMANTR-G1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LM431CCM3X is determined by the following critical parameters: reference type (shunt), output type (adjustable), voltage output range (2.5V minimum to 37V maximum), output current capability (100 mA), tolerance specification, temperature coefficient, package type (SOT-23-3), and operating temperature range.

Substitute parts are grouped into two categories:

Parametric Equivalents maintain identical electrical specifications across all key parameters, ensuring direct replacement without circuit modification. These parts are sourced from the same manufacturer (Texas Instruments) and differ only in packaging designation or product status.

Manufacturer-Recommended Alternatives provide functionally equivalent performance with minor parameter variations that remain within acceptable design margins. These alternatives may originate from different manufacturers and may exhibit improved specifications in certain areas (such as temperature coefficient or operating temperature range) while maintaining compatibility with the primary application requirements.

Parameter Comparison

Engineering Selection Recommendations

LM431CCM3/NOPB and LM431CCM3X/NOPB are direct parametric equivalents to the LM431CCM3X. Both parts are manufactured by Texas Instruments and maintain identical electrical specifications. These parts carry Active product status, ensuring continued availability and supply chain support. Both are ROHS3 compliant with MSL 1 rating, matching the original part's environmental specifications. Selection between these equivalents and the original LM431CCM3X should prioritize parts with Active status to avoid end-of-life supply constraints.

AS431HMANTR-G1 (Diodes Incorporated) is a manufacturer-recommended alternative that provides functional equivalence with enhanced performance characteristics. This part maintains the same output current (100 mA), package type (SOT-23-3), and RoHS3 compliance. Key differences include improved temperature coefficient (20ppm/°C versus 50ppm/°C), tighter tolerance (±0.5% versus -0.6%/+0.4%), extended operating temperature range (-40°C to 125°C versus 0°C to 70°C), and reduced cathode current (500 µA versus 1 mA). The AS431HMANTR-G1 carries Active product status and is suitable for applications requiring enhanced thermal stability or extended temperature operation. The MSL 3 rating requires controlled storage conditions (168 hours at 60% relative humidity and 30°C).

Frequently Asked Questions (FAQ)

Q: Can LM431CCM3/NOPB and LM431CCM3X/NOPB be used interchangeably with LM431CCM3X?

A: Yes. Both parts are parametric equivalents with identical electrical specifications, package type, and compliance certifications. The primary distinction is product status; LM431CCM3/NOPB and LM431CCM3X/NOPB are Active products, while LM431CCM3X is Last Time Buy. For new designs and ongoing production, Active status parts are preferred.

Q: What are the key differences between Texas Instruments LM431 variants and the Diodes Incorporated AS431HMANTR-G1?

A: The AS431HMANTR-G1 offers superior temperature coefficient performance (20ppm/°C versus 50ppm/°C), tighter tolerance specification (±0.5% versus -0.6%/+0.4%), and extended operating temperature range (-40°C to 125°C versus 0°C to 70°C). Output voltage range is slightly reduced (36V maximum versus 37V maximum). Cathode current is lower (500 µA versus 1 mA). All parts maintain 100 mA output current and SOT-23-3 packaging.

Q: Are there any handling or storage differences between these substitute parts?

A: LM431CCM3X, LM431CCM3/NOPB, and LM431CCM3X/NOPB all carry MSL 1 rating, indicating unlimited moisture sensitivity protection. The AS431HMANTR-G1 carries MSL 3 rating, requiring controlled storage at 60% relative humidity and 30°C for a maximum of 168 hours after packaging. Extended storage of AS431HMANTR-G1 parts requires reflow or baking procedures prior to assembly.

Q: Can the AS431HMANTR-G1 be used in applications designed for 0°C to 70°C operation?

A: Yes. The AS431HMANTR-G1 operating temperature range (-40°C to 125°C) encompasses the original specification range (0°C to 70°C). The part is fully compatible with designs specifying the narrower temperature range.

Q: What is the significance of the NOPB designation in part numbers?

A: NOPB indicates "No Plumbum" (lead-free) packaging, confirming RoHS3 compliance. All listed substitute parts carry this designation or equivalent RoHS3 certification.