LM4132DMF-2.5 Equivalent & Substitute Parts

Part Overview

The LM4132DMF-2.5 is a Series Voltage Reference IC with fixed 2.5V output, ±0.4% tolerance, and 20 mA output current in SOT-23-5 surface mount packaging. This part is classified as obsolete by Texas Instruments. Due to its obsolete status, identifying parametrically equivalent and functionally compatible alternatives is essential for design continuity and procurement planning.

Key Parameters

Parameter	Value
Output Voltage (Fixed)	2.5V
Output Current	20 mA
Tolerance	±0.4%
Temperature Coefficient	20 ppm/°C
Noise (0.1Hz to 10Hz)	240 µVp-p
Input Voltage Range	2.9V ~ 5.5V
Supply Current	100 µA
Operating Temperature	-40°C ~ 125°C
Package	SOT-23-5 (SC-74A)
Mounting Type	Surface Mount

Substitute Part Grouping Explanation

Substitute parts for the LM4132DMF-2.5 are grouped based on strict parametric equivalence across the following critical parameters:

Fixed output voltage of 2.5V
Output current capability of 20 mA or greater
Tolerance of ±0.4% or better
Temperature coefficient of 20 ppm/°C or lower
Input voltage range compatibility (2.9V ~ 5.5V minimum)
SOT-23-5 package compatibility
Operating temperature range of -40°C ~ 125°C

Parts meeting these criteria are classified as parametric equivalents and can be directly substituted in applications where the LM4132DMF-2.5 was originally specified.

Parameter Comparison

Part Number	Manufacturer	Output Voltage	Output Current	Tolerance	Temp Coeff	Input Range	Supply Current	Package	Product Status	RoHS Status
LM4132DMF-2.5	Texas Instruments	2.5V	20 mA	±0.4%	20 ppm/°C	2.9V ~ 5.5V	100 µA	SOT-23-5	Obsolete	Non-compliant
LM4132DMF-2.5/NOPB	National Semiconductor	2.5V	20 mA	±0.4%	20 ppm/°C	2.9V ~ 5.5V	100 µA	SOT-23-5	Active	Not specified
LM4132DMFX-2.5/NOPB	Texas Instruments	2.5V	20 mA	±0.4%	20 ppm/°C	2.9V ~ 5.5V	100 µA	SOT-23-5	Active	ROHS3 Compliant
LM4132DQ1MFR2.5	Texas Instruments	2.5V	20 mA	±0.4%	20 ppm/°C	2.9V ~ 5.5V	100 µA	SOT-23-5	Active	ROHS3 Compliant
LM4132DQ1MFT2.5	Texas Instruments	2.5V	20 mA	±0.4%	20 ppm/°C	2.9V ~ 5.5V	100 µA	SOT-23-5	Active	ROHS3 Compliant
MAX6037AAUK25+T	Analog Devices Inc./Maxim Integrated	2.5V	5 mA	±0.2%	25 ppm/°C	2.7V ~ 5.5V	275 µA	SOT-23-5	Active	ROHS3 Compliant

Engineering Selection Recommendations

For direct replacement of the obsolete LM4132DMF-2.5, the following active alternatives are available:

Primary Recommendations (Identical Parametric Match):

LM4132DMFX-2.5/NOPB: Active status, ROHS3 compliant, tape & reel packaging
LM4132DQ1MFR2.5: Active status, ROHS3 compliant, AEC-Q100 automotive qualified, tape & reel packaging
LM4132DQ1MFT2.5: Active status, ROHS3 compliant, AEC-Q100 automotive qualified, tape & reel packaging

Alternative Option (Enhanced Performance):

MAX6037AAUK25+T: Active status, ROHS3 compliant, improved tolerance (±0.2%), lower noise characteristics. Note: Output current is 5 mA versus 20 mA; suitable only for applications not requiring the full 20 mA output current.

For applications requiring automotive-grade components, LM4132DQ1MFR2.5 and LM4132DQ1MFT2.5 are qualified to AEC-Q100 standards. For general industrial applications, LM4132DMFX-2.5/NOPB provides full parametric equivalence with active product status and RoHS compliance.

Frequently Asked Questions (FAQ)

Q: Can I directly substitute LM4132DMFX-2.5/NOPB for the obsolete LM4132DMF-2.5?

A: Yes. Both parts share identical electrical parameters: 2.5V fixed output, 20 mA output current, ±0.4% tolerance, 20 ppm/°C temperature coefficient, and SOT-23-5 packaging. The primary difference is product status (active versus obsolete) and RoHS compliance (ROHS3 compliant).

Q: What is the difference between LM4132DQ1MFR2.5 and LM4132DQ1MFT2.5?

A: Both parts are parametrically identical with AEC-Q100 automotive qualification. The difference lies in packaging format: MFR indicates tape & reel with one reel configuration, while MFT indicates tape & reel with an alternative reel configuration. Electrical performance and compatibility are equivalent.

Q: Can I use MAX6037AAUK25+T as a substitute?

A: MAX6037AAUK25+T is parametrically compatible for output voltage (2.5V), tolerance (±0.2%, which is superior), and package (SOT-23-5). However, the output current is 5 mA versus 20 mA for the LM4132DMF-2.5. This part is suitable only if your application does not require the full 20 mA output current capability.

Q: Are all substitute parts RoHS compliant?

A: LM4132DMFX-2.5/NOPB, LM4132DQ1MFR2.5, LM4132DQ1MFT2.5, and MAX6037AAUK25+T are all ROHS3 compliant. LM4132DMF-2.5/NOPB RoHS status is not specified in the provided data.

Q: Which substitute should I choose for a new design?

A: For new designs, select from active products with ROHS3 compliance: LM4132DMFX-2.5/NOPB for general applications, or LM4132DQ1MFR2.5/LM4132DQ1MFT2.5 for automotive applications requiring AEC-Q100 qualification.

Q: Is the SOT-23-5 package identical across all parts?

A: Yes. All listed parts use the SOT-23-5 package (SC-74A designation), ensuring mechanical and electrical compatibility in PCB layouts and socket designs.

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