LM2940T-9.0 Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The LM2940T-9.0 is a linear voltage regulator IC from Texas Instruments designed for positive fixed 9V output applications with 1A current capacity in a TO-220-3 package. This device is classified as Last Time Buy, indicating discontinued production with limited availability. The LM2940T-9.0/NOPB serves as a direct functional equivalent with Active product status, making it the primary substitute for new designs and ongoing production requirements.

Substiute Parts

LM2940T-9.0

Texas InstrumentsIn Stock: 2523LM2940T-9.0 Datasheet

Current PartRFQ

LM2940T-9.0/NOPB

Texas InstrumentsIn Stock: 2085LM2940T-9.0/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LM2940T-9.0 is determined by strict equivalence across the following critical parameters:

• Fixed output voltage of 9V
• Output current rating of 1A
• Maximum input voltage of 26V
• Voltage dropout specification of 1V @ 1A
• TO-220-3 package configuration
• Identical protection feature set
• Operating temperature range of -40°C to 125°C

The LM2940T-9.0/NOPB meets all substitution criteria as a direct equivalent part with identical electrical and mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

The LM2940T-9.0/NOPB is the appropriate selection for applications currently using or requiring the LM2940T-9.0. The primary distinction between these parts is product lifecycle status: the original LM2940T-9.0 is Last Time Buy with limited inventory (2469 pcs), while the LM2940T-9.0/NOPB maintains Active status with current availability (2048 pcs). Both parts are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements. The /NOPB designation indicates lead-free plating, consistent with modern manufacturing standards. For new designs and production continuity, the LM2940T-9.0/NOPB is the recommended part selection.

Frequently Asked Questions (FAQ)

Q: What is the difference between LM2940T-9.0 and LM2940T-9.0/NOPB?

A: Both parts are electrically and mechanically identical with matching specifications across all critical parameters. The /NOPB designation indicates lead-free plating. The primary difference is product status: LM2940T-9.0 is Last Time Buy, while LM2940T-9.0/NOPB is Active.

Q: Can LM2940T-9.0/NOPB be used as a direct replacement for LM2940T-9.0?

A: Yes. The LM2940T-9.0/NOPB is a direct functional equivalent with identical output voltage, current rating, package type, and protection features. No circuit modifications are required.

Q: Are there any compatibility concerns with the TO-220-3 package?

A: No. Both parts use the identical TO-220-3 package configuration, ensuring mechanical and thermal compatibility in existing PCB layouts and thermal management designs.

Q: Do both parts meet current compliance standards?

A: Yes. Both the LM2940T-9.0 and LM2940T-9.0/NOPB are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic components.

Q: What protection features are included in these regulators?

A: Both parts include over current, over temperature, reverse polarity, and short circuit protection, providing comprehensive safeguarding for power supply applications.