LM2936M-3.3 Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The LM2936M-3.3 is a linear voltage regulator IC from Texas Instruments designed for positive fixed 3.3V output applications with 50mA current capacity in an 8-SOIC surface mount package. This device is classified as Last Time Buy, indicating discontinued production status. Finding equivalent and substitute parts is necessary to ensure design continuity and maintain supply chain reliability for applications currently using this regulator.

Substiute Parts

LM2936M-3.3

Texas InstrumentsIn Stock: 4094LM2936M-3.3 Datasheet

Current PartRFQ

LM2936M-3.3/NOPB

Texas InstrumentsIn Stock: 2010LM2936M-3.3/NOPB Datasheet

DirectRFQ

LM2936QM-3.3/NOPB

Texas InstrumentsIn Stock: 2225LM2936QM-3.3/NOPB Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the LM2936M-3.3 is determined by strict equivalence across the following critical parameters:

• Fixed output voltage of 3.3V
• Output current capacity of 50mA
• Maximum input voltage of 40V
• Voltage dropout specification of 0.4V @ 50mA
• Quiescent current of 15 µA
• PSRR of 60dB (120Hz)
• Operating temperature range of -40°C ~ 125°C
• 8-SOIC package configuration
• Protection features: Over Temperature, Reverse Polarity, Short Circuit
• ROHS3 compliance

The substitute parts identified maintain identical electrical specifications and package requirements, with variations limited to packaging format (Tube vs. Bulk) and product status (Last Time Buy vs. Active).

Parameter Comparison

Engineering Selection Recommendations

LM2936M-3.3/NOPB is a direct substitute with identical electrical and mechanical specifications. This part is in Active product status, ensuring continued availability and supply chain stability. The primary difference is packaging format (Bulk vs. Tube), which does not affect electrical performance or PCB compatibility.

LM2936QM-3.3/NOPB is a parametric equivalent suitable for applications requiring automotive-grade components. This variant carries AEC-Q100 qualification and is specified for automotive applications. All electrical parameters remain identical to the main part. Selection of this variant is appropriate when automotive reliability standards or qualification requirements apply to the end application.

Both substitute parts maintain ROHS3 compliance and identical protection features, ensuring regulatory and functional compatibility with designs currently using the LM2936M-3.3.

Frequently Asked Questions (FAQ)

Q: Can LM2936M-3.3/NOPB be used as a direct replacement for LM2936M-3.3?

A: Yes. Both parts are electrically and mechanically identical. The /NOPB designation indicates lead-free plating. The only difference is packaging format (Bulk vs. Tube), which does not affect circuit performance or PCB assembly compatibility.

Q: What is the difference between LM2936M-3.3/NOPB and LM2936QM-3.3/NOPB?

A: Both parts have identical electrical specifications and package configuration. LM2936QM-3.3/NOPB is automotive-grade with AEC-Q100 qualification. Selection depends on application requirements: use the standard grade for general applications, or the automotive grade when AEC-Q100 compliance is specified.

Q: Are all three parts pin-compatible?

A: Yes. All three parts use the 8-SOIC package with identical pinout and electrical characteristics, ensuring direct PCB compatibility without layout modifications.

Q: Why is the LM2936M-3.3 marked as Last Time Buy?

A: Last Time Buy status indicates the manufacturer has discontinued this specific part number. Substitute parts LM2936M-3.3/NOPB and LM2936QM-3.3/NOPB remain in Active status and are recommended for new designs and ongoing production.

Q: Do all substitute parts meet the same compliance standards?

A: Yes. All three parts are ROHS3 compliant and REACH unaffected. LM2936QM-3.3/NOPB additionally carries AEC-Q100 automotive qualification.