LM4132DMFX-2.5 Equivalent & Substitute Parts

Part Overview

The LM4132DMFX-2.5 is a Series Voltage Reference IC from Texas Instruments, providing a fixed 2.5V output with ±0.4% tolerance in a SOT-23-5 surface mount package. This part is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements. The LM4132DMFX-2.5 serves as a precision voltage reference in power management applications requiring stable DC voltage generation across industrial and commercial temperature ranges.

Substiute Parts

LM4132DMFX-2.5

Texas InstrumentsIn Stock: 2504LM4132DMFX-2.5 Datasheet

Current PartRFQ

LM4132DMFX-2.5/NOPB

Texas InstrumentsIn Stock: 971LM4132DMFX-2.5/NOPB Datasheet

DirectRFQ

LM4132DMF-2.5/NOPB

National SemiconductorIn Stock: 3779LM4132DMF-2.5/NOPB Datasheet

Parametric EquivalentRFQ

LM4132DQ1MFR2.5

Texas InstrumentsIn Stock: 883LM4132DQ1MFR2.5 Datasheet

Parametric EquivalentRFQ

LM4132DQ1MFT2.5

Texas InstrumentsIn Stock: 1018LM4132DQ1MFT2.5 Datasheet

Parametric EquivalentRFQ

MAX6037AAUK25+T

Analog Devices Inc./Maxim IntegratedIn Stock: 5028MAX6037AAUK25+T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LM4132DMFX-2.5 are classified based on electrical and mechanical parameter compatibility. The primary substitution criteria are:

Critical Parameters for Substitution:

• Fixed output voltage of 2.5V
• SOT-23-5 package / SC-74A case
• Surface mount mounting type
• Operating temperature range of -40°C ~ 125°C
• Input voltage range compatibility (2.9V ~ 5.5V minimum)

Substitution Categories:

Direct Manufacturer Equivalent: Parts with identical electrical specifications and packaging from the same manufacturer, differing only in packaging format (Tape & Reel vs. Bulk).

Parametric Equivalents: Parts meeting all critical electrical parameters (output voltage, tolerance, temperature coefficient, noise characteristics, input/output current ratings) and package specifications, sourced from the same or equivalent manufacturers.

Manufacturer Recommended Substitute: Parts from alternative manufacturers (Analog Devices Inc./Maxim Integrated) that meet or exceed the electrical performance requirements while maintaining package compatibility, though with different performance characteristics in specific parameters.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Identical Electrical Performance):

LM4132DMFX-2.5/NOPB is the primary direct substitute, offering identical electrical specifications with the advantage of Active product status and ROHS3 compliance. This part differs only in packaging format (Tape & Reel) and RoHS compliance status, making it suitable for new production runs requiring regulatory compliance.

LM4132DMF-2.5/NOPB provides parametric equivalence with identical electrical characteristics and is available in Bulk packaging. This option is suitable for applications where packaging format flexibility is required.

For Automotive and High-Reliability Applications:

LM4132DQ1MFR2.5 and LM4132DQ1MFT2.5 are automotive-grade equivalents with AEC-Q100 qualification, maintaining identical electrical specifications while meeting automotive industry standards. These parts are suitable for automotive and mission-critical applications requiring enhanced reliability qualification.

For Enhanced Performance Requirements:

MAX6037AAUK25+T from Analog Devices Inc./Maxim Integrated offers superior electrical performance with ±0.2% tolerance (compared to ±0.4%), significantly lower noise (14 µVp-p vs. 240 µVp-p), and extended input voltage range (2.7V minimum vs. 2.9V). However, this part has reduced output current capability (5 mA vs. 20 mA) and higher supply current consumption (275 µA vs. 100 µA). Selection of this part requires confirmation that the application's output current requirements do not exceed 5 mA.

Compliance Considerations:

The original LM4132DMFX-2.5 is RoHS non-compliant and obsolete. For new designs and production, LM4132DMFX-2.5/NOPB, LM4132DQ1MFR2.5, or LM4132DQ1MFT2.5 are recommended to meet ROHS3 compliance requirements.

Frequently Asked Questions (FAQ)

Q: Can LM4132DMFX-2.5/NOPB be used as a direct replacement for LM4132DMFX-2.5?

A: Yes. LM4132DMFX-2.5/NOPB is a direct electrical equivalent with identical specifications. The primary differences are packaging format (Tape & Reel vs. unspecified) and RoHS compliance status (ROHS3 Compliant vs. non-compliant). Both parts are suitable for identical circuit applications.

Q: What is the difference between the standard LM4132 variants and the automotive-grade LM4132DQ1 variants?

A: The LM4132DQ1MFR2.5 and LM4132DQ1MFT2.5 are automotive-grade versions with AEC-Q100 qualification, designed for automotive and high-reliability applications. Electrical specifications remain identical to standard versions. The automotive qualification ensures enhanced reliability testing and quality assurance suitable for mission-critical applications.

Q: Can MAX6037AAUK25+T replace LM4132DMFX-2.5 in all applications?

A: MAX6037AAUK25+T is a parametric equivalent with superior performance characteristics (lower tolerance and noise). However, it has reduced output current capability (5 mA vs. 20 mA). Substitution is valid only for applications requiring output current of 5 mA or less. Applications requiring the full 20 mA output current must use LM4132 variants.

Q: Are all substitute parts available in SOT-23-5 packaging?

A: Yes. All substitute parts listed are available in SOT-23-5 package format (SC-74A, SOT-753 case), ensuring mechanical and electrical compatibility with existing PCB designs.

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

A: The /NOPB suffix indicates "No Plumbum" (lead-free), denoting RoHS compliance. Parts with this suffix meet ROHS3 compliance requirements and are suitable for applications requiring regulatory compliance with environmental standards.

Q: Why does the original LM4132DMFX-2.5 have obsolete status?

A: The LM4132DMFX-2.5 is classified as obsolete, indicating it is no longer in active production. Active equivalents such as LM4132DMFX-2.5/NOPB are available for new designs and ongoing production requirements.

Q: What are the key parameters that determine substitution compatibility?

A: Substitution compatibility is determined by: fixed output voltage (2.5V), SOT-23-5 package format, surface mount mounting type, operating temperature range (-40°C ~ 125°C), and input voltage range compatibility (minimum 2.9V). Output current and tolerance specifications must be evaluated based on specific application requirements.