LM2936M-3.0 Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The LM2936M-3.0 is a linear voltage regulator IC from Texas Instruments designed for positive fixed 3V output applications with 50mA current capacity in an 8-SOIC surface mount package. This device is classified as obsolete, making identification of suitable substitute parts essential for ongoing production and maintenance applications. The regulator provides integrated protection features including over-temperature, reverse polarity, and short-circuit protection, making it suitable for low-power fixed voltage supply circuits.

Substiute Parts

LM2936M-3.0

Texas InstrumentsIn Stock: 2259LM2936M-3.0 Datasheet

Current PartRFQ

LM2936M-3.0/NOPB

Texas InstrumentsIn Stock: 2100LM2936M-3.0/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LM2936M-3.0 is determined by strict equivalence across the following critical parameters:

• Output voltage configuration: Fixed 3V positive output
• Output current capacity: 50mA minimum
• Input voltage rating: 40V maximum
• Voltage dropout specification: 0.4V @ 50mA maximum
• Package type: 8-SOIC form factor with 0.154" (3.90mm) width
• Protection features: Over-temperature, reverse polarity, and short-circuit protection
• Operating temperature range: -40°C to 125°C junction temperature
• Quiescent current: 15 µA maximum
• PSRR performance: 60dB @ 120Hz minimum

The LM2936M-3.0/NOPB qualifies as a direct substitute based on identical electrical specifications and package configuration. The primary distinction between the main part and substitute is product status and compliance certification.

Parameter Comparison

Engineering Selection Recommendations

The LM2936M-3.0/NOPB serves as the direct functional equivalent to the obsolete LM2936M-3.0. All electrical parameters, output specifications, and package dimensions are identical. The substitute part is currently in active production status, ensuring availability for new designs and replacement applications.

For applications requiring RoHS compliance, the LM2936M-3.0/NOPB is ROHS3 compliant, whereas the original LM2936M-3.0 is non-compliant. This distinction is significant for regulated industries and export applications subject to environmental directives.

Both parts maintain identical thermal and electrical performance characteristics across the specified operating temperature range of -40°C to 125°C junction temperature. The 8-SOIC package footprint is consistent, allowing direct PCB layout compatibility without redesign.

Frequently Asked Questions (FAQ)

Q: Can the LM2936M-3.0/NOPB replace the LM2936M-3.0 in existing designs?

A: Yes. The LM2936M-3.0/NOPB is electrically and mechanically identical to the LM2936M-3.0. All output voltage, current, dropout, and protection specifications match exactly. The 8-SOIC package footprint is identical, enabling direct substitution without PCB modifications.

Q: What is the significance of the "/NOPB" suffix?

A: The "/NOPB" designation indicates lead-free (no-lead) plating on the component leads, consistent with RoHS3 compliance requirements. This affects material composition and environmental compliance status but does not alter electrical performance or package dimensions.

Q: Why is the original LM2936M-3.0 marked as obsolete?

A: Product obsolescence typically results from manufacturer discontinuation decisions. The LM2936M-3.0/NOPB represents the current production equivalent, incorporating modern compliance standards while maintaining full electrical and mechanical compatibility.

Q: Are there any thermal or performance differences between these parts?

A: No. Both parts operate identically across the -40°C to 125°C temperature range with identical quiescent current (15 µA), PSRR (60dB @ 120Hz), and dropout voltage (0.4V @ 50mA) specifications.

Q: What packaging options are available for the substitute part?

A: The LM2936M-3.0/NOPB is supplied in Tube packaging, whereas the original part packaging specification was not provided. Both use the 8-SOIC surface mount package form factor.