LM317LID Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The LM317LID is a positive adjustable linear voltage regulator IC manufactured by Texas Instruments, designed for applications requiring adjustable output voltage regulation up to 100mA. This device is classified as a Power Management (PMIC) component and is currently in Last Time Buy status, indicating limited availability from the original manufacturer. The LM317LID is packaged in 8-SOIC surface mount configuration with tube packaging. Due to its Last Time Buy status, identifying functionally equivalent substitute parts with active production status is essential for design continuity and long-term supply chain reliability.

Substiute Parts

LM317LID

Texas InstrumentsIn Stock: 2081LM317LID Datasheet

Current PartRFQ

LM317LIDR

Texas InstrumentsIn Stock: 10194LM317LIDR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LM317LID is determined by strict equivalence across the following critical parameters:

• Output configuration (Positive)
• Output type (Adjustable)
• Number of regulators (1)
• Voltage specifications: Input Max 38V, Output Min 1.2V, Output Max 32V
• Current output rating (100mA)
• Quiescent current (2.5 mA)
• PSRR performance (80dB ~ 65dB at 120Hz)
• Protection features (Over Current, Over Temperature, Short Circuit)
• Operating temperature range (-40°C ~ 125°C)
• Package type (8-SOIC)
• Compliance certifications (ROHS3, MSL 1)

The LM317LIDR is identified as a manufacturer-recommended substitute based on identical electrical specifications and package configuration. The primary distinction is packaging format: the LM317LID is supplied in tube packaging with Last Time Buy status, while the LM317LIDR is supplied in Cut Tape (CT) & Digi-Reel® format with Active product status.

Parameter Comparison

Engineering Selection Recommendations

The LM317LIDR is a direct electrical and mechanical equivalent to the LM317LID. Both devices share identical electrical specifications, pin configuration, and package dimensions. The LM317LIDR is the preferred selection for new designs and ongoing production due to its Active product status, ensuring continued availability and supply chain stability. The LM317LID, currently in Last Time Buy status, should be phased out in favor of the LM317LIDR to avoid future supply constraints.

Both parts maintain full compliance with ROHS3 regulations and carry MSL 1 rating, indicating no moisture sensitivity restrictions. The substitution is direct with no design modifications required. The only consideration is packaging format: the LM317LIDR is supplied in industry-standard Cut Tape and Digi-Reel® formats, which are compatible with automated assembly processes and standard component handling procedures.

Frequently Asked Questions (FAQ)

Q: Can the LM317LIDR be used as a direct replacement for the LM317LID in existing designs?

A: Yes. The LM317LIDR is electrically and mechanically identical to the LM317LID. Both devices have the same pin configuration, electrical performance, and 8-SOIC package dimensions. No circuit modifications are required for substitution.

Q: What is the difference between the LM317LID and LM317LIDR?

A: The primary difference is packaging format and product status. The LM317LID is supplied in tube packaging and is in Last Time Buy status. The LM317LIDR is supplied in Cut Tape (CT) and Digi-Reel® formats and maintains Active product status with ongoing manufacturing support.

Q: Are there any compliance or certification differences between these parts?

A: No. Both the LM317LID and LM317LIDR are ROHS3 compliant, carry identical MSL 1 ratings, and meet the same environmental and regulatory standards.

Q: Why should I transition from LM317LID to LM317LIDR?

A: The LM317LID is in Last Time Buy status, indicating limited remaining inventory and no future production. The LM317LIDR maintains Active status with continuous manufacturing availability, ensuring long-term supply chain reliability for production and future design iterations.

Q: Are the electrical specifications identical between LM317LID and LM317LIDR?

A: Yes. Both parts have identical voltage ratings (38V input max, 1.2V to 32V output adjustable range), current output (100mA), quiescent current (2.5 mA), PSRR performance (80dB ~ 65dB at 120Hz), and protection features (Over Current, Over Temperature, Short Circuit).

Q: Can I use LM317LIDR in automated assembly processes?

A: Yes. The LM317LIDR is supplied in Cut Tape (CT) and Digi-Reel® formats, which are standard packaging options for automated surface mount assembly equipment.