LM4132DMFX-3.3 Equivalent & Substitute Parts

Part Overview

The LM4132DMFX-3.3 is a Series Voltage Reference IC with fixed 3.3V output, ±0.4% tolerance, and 20 mA output current in SOT-23-5 surface mount packaging. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The LM4132DMFX-3.3/NOPB represents the direct successor with active product status, while parametric equivalents from Texas Instruments and manufacturer-recommended alternatives from Analog Devices Inc./Maxim Integrated provide additional options based on specific application requirements.

Substiute Parts

LM4132DMFX-3.3

Texas InstrumentsIn Stock: 2210LM4132DMFX-3.3 Datasheet

Current PartRFQ

LM4132DMFX-3.3/NOPB

Texas InstrumentsIn Stock: 690LM4132DMFX-3.3/NOPB Datasheet

DirectRFQ

LM4132DMF-3.3/NOPB

Texas InstrumentsIn Stock: 1257LM4132DMF-3.3/NOPB Datasheet

Parametric EquivalentRFQ

LM4132DQ1MFR3.3

Texas InstrumentsIn Stock: 1230LM4132DQ1MFR3.3 Datasheet

Parametric EquivalentRFQ

LM4132DQ1MFT3.3

Texas InstrumentsIn Stock: 9053LM4132DQ1MFT3.3 Datasheet

Parametric EquivalentRFQ

MAX6037AAUK33+T

Analog Devices Inc./Maxim IntegratedIn Stock: 3575MAX6037AAUK33+T Datasheet

MFR RecommendedRFQ

MAX6037BAUK33+T

Analog Devices Inc./Maxim IntegratedIn Stock: 1044MAX6037BAUK33+T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the LM4132DMFX-3.3 is determined by the following critical parameters: fixed 3.3V output voltage, SOT-23-5 package compatibility, surface mount mounting type, and operating temperature range of -40°C to 125°C. Parts are grouped into three categories:

Direct Manufacturer Equivalent (LM4132DMFX-3.3/NOPB): Identical electrical specifications and packaging. Differs only in product status (active vs. obsolete) and RoHS compliance level.

Parametric Equivalents (LM4132DMF-3.3/NOPB, LM4132DQ1MFR3.3, LM4132DQ1MFT3.3): All Texas Instruments LM4132 variants maintain identical output voltage, tolerance, temperature coefficient, noise characteristics, input voltage range, supply current, and operating temperature. Differences include packaging format (Tape & Reel vs. Cut Tape) and automotive qualification (AEC-Q100) for DQ1 variants.

Manufacturer-Recommended Alternatives (MAX6037AAUK33+T, MAX6037BAUK33+T): Analog Devices Inc./Maxim Integrated MAX6037 series provides 3.3V fixed output in SOT-23-5 packaging with improved tolerance (±0.2% and ±0.3% respectively) and lower noise characteristics, though with reduced output current (5 mA vs. 20 mA) and higher supply current (275µA vs. 100µA).

Parameter Comparison

Engineering Selection Recommendations

For direct replacement of the obsolete LM4132DMFX-3.3, the LM4132DMFX-3.3/NOPB is the primary choice, offering identical electrical performance with active product status and ROHS3 compliance. This part maintains all original specifications including 20 mA output current and 100µA supply current.

The parametric equivalents LM4132DMF-3.3/NOPB and LM4132DQ1MFT3.3 provide identical electrical characteristics with active status and full RoHS compliance. The LM4132DQ1MFR3.3 and LM4132DQ1MFT3.3 variants include AEC-Q100 automotive qualification, suitable for applications requiring automotive-grade components.

The MAX6037AAUK33+T and MAX6037BAUK33+T from Analog Devices Inc./Maxim Integrated are manufacturer-recommended alternatives with superior tolerance specifications (±0.2% and ±0.3% respectively) and significantly lower noise performance (19µVp-p vs. 310µVp-p). However, these parts are limited to 5 mA output current compared to the 20 mA capability of the LM4132 series. Selection of MAX6037 variants is appropriate only when application load current requirements do not exceed 5 mA.

All substitute parts share identical SOT-23-5 packaging, surface mount mounting type, and -40°C to 125°C operating temperature range, ensuring PCB layout compatibility.

Frequently Asked Questions (FAQ)

Q: Can the LM4132DMFX-3.3 be directly replaced with LM4132DMFX-3.3/NOPB?

A: Yes. The LM4132DMFX-3.3/NOPB is the direct successor with identical electrical specifications, package, and pinout. The primary difference is product status (active vs. obsolete) and RoHS compliance certification level.

Q: What is the difference between LM4132DMF-3.3/NOPB and LM4132DQ1MFT3.3?

A: Both parts are parametric equivalents with identical output voltage, current, tolerance, temperature coefficient, and noise characteristics. The LM4132DQ1MFT3.3 includes AEC-Q100 automotive qualification and is available in Cut Tape & Digi-Reel packaging, while LM4132DMF-3.3/NOPB is available in standard Tape & Reel format.

Q: Can MAX6037AAUK33+T replace the LM4132DMFX-3.3?

A: Partial compatibility exists. The MAX6037AAUK33+T provides 3.3V output in identical SOT-23-5 packaging with superior tolerance (±0.2%) and lower noise. However, output current is limited to 5 mA versus 20 mA for the LM4132. Substitution is valid only if application load current does not exceed 5 mA.

Q: Are all substitute parts RoHS compliant?

A: The original LM4132DMFX-3.3 is RoHS non-compliant. All substitute parts listed (LM4132DMFX-3.3/NOPB, LM4132DMF-3.3/NOPB, LM4132DQ1MFR3.3, LM4132DQ1MFT3.3, MAX6037AAUK33+T, MAX6037BAUK33+T) are ROHS3 compliant.

Q: What packaging options are available for LM4132 variants?

A: LM4132 variants are available in Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel formats. All maintain SOT-23-5 package specification. Packaging selection does not affect electrical performance or pinout compatibility.

Q: Is automotive qualification available for the LM4132 series?

A: Yes. The LM4132DQ1MFR3.3 and LM4132DQ1MFT3.3 variants include AEC-Q100 automotive qualification. Standard LM4132DMFX-3.3/NOPB and LM4132DMF-3.3/NOPB do not carry automotive certification.