LM4132DMFX-2.0 Equivalent & Substitute Parts

Part Overview

The LM4132DMFX-2.0 is a Series Voltage Reference IC from 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 identification of suitable alternatives essential for ongoing design support 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, serving applications requiring stable voltage reference generation in power management circuits.

Substiute Parts

LM4132DMFX-2.0

Texas InstrumentsIn Stock: 2438LM4132DMFX-2.0 Datasheet

Current PartRFQ

LM4132DMFX-2.0/NOPB

Texas InstrumentsIn Stock: 753LM4132DMFX-2.0/NOPB Datasheet

DirectRFQ

LM4132DMF-2.0/NOPB

Texas InstrumentsIn Stock: 984LM4132DMF-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 eligibility for the LM4132DMFX-2.0 is determined by the following critical parameters:

• Fixed output voltage of 2.048V
• SOT-23-5 package configuration (SC-74A, SOT-753)
• Surface mount mounting type
• Operating temperature range of -40°C to 125°C
• Series voltage reference topology

The substitute parts identified maintain these core electrical and mechanical specifications. Variations in tolerance, temperature coefficient, output current, supply current, and noise characteristics are documented to enable informed selection based on application requirements.

Parameter Comparison

Engineering Selection Recommendations

LM4132DMFX-2.0/NOPB and LM4132DMF-2.0/NOPB are direct parametric equivalents from Texas Instruments with Active product status. Both maintain identical electrical specifications to the obsolete LM4132DMFX-2.0 while offering ROHS3 compliance and Tape & Reel packaging for production environments. These parts are the primary recommendation for direct replacement in existing designs.

MAX6037AAUK21+T from Analog Devices Inc./Maxim Integrated is a manufacturer-recommended alternative with Active product status and ROHS3 compliance. This part delivers superior performance characteristics: ±0.2% tolerance (versus ±0.4%), significantly lower noise at 11µVp-p (0.1Hz to 10Hz), and additional noise specification of 25µVrms (10Hz to 10kHz). The trade-off is reduced output current (5 mA versus 20 mA) and increased supply current (275µA versus 100µA). Selection of this part is appropriate for applications requiring enhanced voltage reference accuracy and noise performance where the reduced output current and higher supply current are acceptable.

Frequently Asked Questions (FAQ)

Q: Can LM4132DMFX-2.0/NOPB directly replace the obsolete LM4132DMFX-2.0?

A: Yes. LM4132DMFX-2.0/NOPB is a direct equivalent with identical electrical and mechanical specifications. The primary differences are Active product status, ROHS3 compliance, and Tape & Reel packaging format.

Q: What is the difference between LM4132DMFX-2.0/NOPB and LM4132DMF-2.0/NOPB?

A: Both parts are parametric equivalents with identical electrical specifications and Active product status. The difference lies in packaging designation; both are supplied in Tape & Reel format and are suitable for production applications.

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

A: MAX6037AAUK21+T is appropriate when applications require tighter voltage tolerance (±0.2% versus ±0.4%) and lower noise performance (11µVp-p versus 190µVp-p in the 0.1Hz to 10Hz band). This part is suitable only when the reduced output current specification (5 mA versus 20 mA) and increased supply current (275µA versus 100µA) are compatible with circuit requirements.

Q: Are all substitute parts compatible with the SOT-23-5 package footprint?

A: Yes. All substitute parts use the SC-74A, SOT-753 package designation with SOT-23-5 supplier device package specification, ensuring mechanical and electrical compatibility with existing PCB layouts.

Q: What compliance considerations apply to part selection?

A: The obsolete LM4132DMFX-2.0 is RoHS non-compliant. Both LM4132DMFX-2.0/NOPB and LM4132DMF-2.0/NOPB offer ROHS3 compliance. MAX6037AAUK21+T also provides ROHS3 compliance. All parts are REACH Unaffected and classified as EAR99 for export control purposes.

Q: What is the operating temperature specification for each part?

A: LM4132DMFX-2.0, LM4132DMFX-2.0/NOPB, and LM4132DMF-2.0/NOPB operate across -40°C to 125°C (TJ). MAX6037AAUK21+T operates across -40°C to 125°C (TA). Both temperature specifications cover the same functional range.