LM4132DMF-2.0 Equivalent & Substitute Parts

Part Overview

The LM4132DMF-2.0 is a Series Voltage Reference IC manufactured by Texas Instruments, delivering a fixed 2.048V output with ±0.4% tolerance in a SOT-23-5 surface mount package. This component is classified as obsolete, making equivalent and substitute parts necessary for new designs and production continuity. The part operates across a -40°C to 125°C temperature range with 20 mA output current capability and 100µA supply current, suitable for precision analog applications requiring stable voltage references.

Substiute Parts

LM4132DMF-2.0

Texas InstrumentsIn Stock: 3173LM4132DMF-2.0 Datasheet

Current PartRFQ

LM4132DMF-2.0/NOPB

Texas InstrumentsIn Stock: 984LM4132DMF-2.0/NOPB Datasheet

DirectRFQ

LM4132DMFX-2.0/NOPB

Texas InstrumentsIn Stock: 753LM4132DMFX-2.0/NOPB Datasheet

Parametric EquivalentRFQ

MAX6037AAUK21+T

Analog Devices Inc./Maxim IntegratedIn Stock: 3426MAX6037AAUK21+T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the LM4132DMF-2.0 is determined by the following critical parameters: fixed output voltage of 2.048V, output current capability, voltage tolerance, temperature coefficient, input voltage range, package type (SOT-23-5), and operating temperature range. Parts are grouped into three categories based on their relationship to the main part:

Direct Manufacturer Equivalent (LM4132DMF-2.0/NOPB): Identical electrical specifications with NOPB (No Lead/Halogen) designation and active product status, differing only in packaging format (Tape & Reel) and RoHS compliance level.

Parametric Equivalent (LM4132DMFX-2.0/NOPB): Same electrical performance as the direct equivalent with identical specifications, active status, and RoHS3 compliance.

Manufacturer Recommended Alternative (MAX6037AAUK21+T): Cross-manufacturer substitute from Analog Devices Inc./Maxim Integrated with identical 2.048V output and SOT-23-5 package, but with improved tolerance (±0.2%), lower noise characteristics, and different current specifications.

Parameter Comparison

Engineering Selection Recommendations

For new designs and production applications, LM4132DMF-2.0/NOPB or LM4132DMFX-2.0/NOPB are the primary substitutes, offering identical electrical performance to the obsolete LM4132DMF-2.0 with active product status and ROHS3 compliance. Both parts maintain the original 20 mA output current capability and ±0.4% tolerance specification.

MAX6037AAUK21+T serves as a manufacturer-recommended alternative when improved performance characteristics are acceptable. This part provides superior tolerance (±0.2%) and significantly lower noise (11µVp-p versus 190µVp-p), making it suitable for applications requiring enhanced precision. However, the reduced output current (5 mA versus 20 mA) and increased supply current (275µA versus 100µA) must be evaluated against circuit requirements. The input voltage range minimum increases from 2.448V to 2.5V, requiring verification in low-voltage supply applications.

All substitute parts maintain SOT-23-5 packaging compatibility, identical output voltage, and equivalent operating temperature ranges, ensuring direct PCB layout compatibility.

Frequently Asked Questions (FAQ)

Q: Can LM4132DMF-2.0/NOPB be used as a direct replacement for LM4132DMF-2.0?

A: Yes. Both parts deliver identical electrical specifications: 2.048V fixed output, ±0.4% tolerance, 20 mA output current, and SOT-23-5 package. The primary differences are packaging format (Tape & Reel for the NOPB variant) and RoHS compliance status (ROHS3 for the active part). The obsolete status of the original part makes the NOPB variant the recommended choice for production.

Q: What are the key differences between LM4132DMFX-2.0/NOPB and LM4132DMF-2.0/NOPB?

A: Both parts are electrically identical with the same 2.048V output, ±0.4% tolerance, 20 mA current, and temperature coefficient. The "X" designation in the part number indicates a different manufacturing process or qualification level, but all critical electrical parameters remain unchanged. Both are active products with ROHS3 compliance.

Q: When should MAX6037AAUK21+T be selected over the LM4132 variants?

A: Select MAX6037AAUK21+T when circuit design permits reduced output current (5 mA versus 20 mA) and higher supply current consumption (275µA versus 100µA) is acceptable. The superior tolerance (±0.2%) and dramatically lower noise (11µVp-p) make this part suitable for precision analog applications. Verify that the minimum input voltage requirement of 2.5V (versus 2.448V) is compatible with your supply rail.

Q: Are all substitute parts pin-compatible?

A: Yes. All parts use the SOT-23-5 package with identical pinout, enabling direct PCB replacement without layout modifications.

Q: What compliance certifications apply to each part?

A: LM4132DMF-2.0 is RoHS non-compliant. LM4132DMF-2.0/NOPB, LM4132DMFX-2.0/NOPB, and MAX6037AAUK21+T are all ROHS3 compliant. All parts are REACH unaffected and classified as EAR99 for export control purposes.

Q: Does the temperature coefficient difference between LM4132 (20ppm/°C) and MAX6037 (25ppm/°C) affect substitution?

A: The 5ppm/°C difference is minimal for most applications. Over the full -40°C to 125°C operating range (165°C span), this results in approximately 0.825mV maximum drift for the MAX6037 versus 0.66mV for the LM4132. Evaluate this against your circuit's voltage stability requirements.