LM217D2T Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The LM217D2T is a linear voltage regulator IC from STMicroelectronics designed for positive adjustable output applications. This component delivers 1.5A output current in a D2PAK surface mount package and operates across an input voltage range up to 40V with adjustable output from 1.2V to 37V. The LM217D2T is classified as obsolete, making identification of suitable substitutes necessary for ongoing production and maintenance applications. The substitute part LM217D2T-TR provides functional equivalence with active product status and identical electrical specifications.

Substiute Parts

LM217D2T

STMicroelectronicsIn Stock: 2142LM217D2T Datasheet

Current PartRFQ

LM217D2T-TR

STMicroelectronicsIn Stock: 1464LM217D2T-TR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LM217D2T is determined by strict equivalence across all electrical and mechanical parameters. The substitute part LM217D2T-TR qualifies as a direct equivalent based on the following criteria:

Electrical Parameter Equivalence:

• Identical output configuration (Positive)
• Identical output type (Adjustable)
• Identical voltage specifications: Input (Max) 40V, Output range 1.2V to 37V
• Identical current output rating: 1.5A
• Identical PSRR: 80dB ~ 65dB (120Hz)
• Identical protection features: Over Current and Over Temperature
• Identical operating temperature range: -25°C ~ 150°C

Mechanical Parameter Equivalence:

• Identical package type: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
• Identical mounting type: Surface Mount

Compliance Equivalence:

• Identical RoHS Status: ROHS3 Compliant
• Identical Moisture Sensitivity Level: 1 (Unlimited)
• Identical REACH Status: REACH Unaffected

The primary distinction between the main part and substitute is product status and packaging format. The LM217D2T-TR is active and available in Cut Tape (CT) and Digi-Reel® packaging, whereas the LM217D2T is obsolete.

Parameter Comparison

Engineering Selection Recommendations

The LM217D2T-TR is the direct substitute for the obsolete LM217D2T. Both components are manufactured by STMicroelectronics and share identical electrical and mechanical specifications across all rated parameters. The LM217D2T-TR maintains full compliance with ROHS3 and REACH requirements, ensuring regulatory equivalence.

The primary advantage of selecting LM217D2T-TR is its active product status, which ensures ongoing availability and supply chain continuity. The LM217D2T is classified as obsolete and subject to inventory depletion. The LM217D2T-TR is supplied in Cut Tape (CT) and Digi-Reel® packaging formats, providing flexibility for both manual and automated assembly processes.

For applications currently using the LM217D2T, direct substitution with LM217D2T-TR requires no circuit modifications, PCB layout changes, or thermal management adjustments. The D2PAK package footprint and pinout remain identical, enabling drop-in replacement at the component level.

Frequently Asked Questions (FAQ)

Q: Can LM217D2T-TR be used as a direct replacement for LM217D2T in existing designs?

A: Yes. The LM217D2T-TR is a direct substitute with identical electrical specifications, output configuration, voltage ratings, current capacity, protection features, and operating temperature range. The D2PAK package and pinout are identical, enabling direct PCB substitution without design modifications.

Q: What is the difference between LM217D2T and LM217D2T-TR?

A: The LM217D2T is classified as obsolete, while LM217D2T-TR is active. Both components share identical electrical and mechanical parameters. The LM217D2T-TR is supplied in Cut Tape (CT) and Digi-Reel® packaging, whereas the LM217D2T availability is limited due to obsolescence.

Q: Are there any compliance differences between the two parts?

A: No. Both the LM217D2T and LM217D2T-TR are ROHS3 compliant, REACH unaffected, and carry identical Moisture Sensitivity Level (MSL) ratings of 1 (Unlimited).

Q: What is the D2PAK package specification?

A: The D2PAK is a surface mount package designated as TO-263-3 with 2 leads plus a thermal tab. This package is suitable for applications requiring moderate current handling with integrated thermal management through the tab connection.

Q: Can the LM217D2T-TR handle the same voltage and current specifications as the original part?

A: Yes. The LM217D2T-TR is rated for identical specifications: maximum input voltage of 40V, adjustable output from 1.2V to 37V, and output current of 1.5A. PSRR performance at 80dB ~ 65dB (120Hz) is also identical.

Q: What protection features are included in the LM217D2T-TR?

A: The LM217D2T-TR includes Over Current and Over Temperature protection, identical to the original LM217D2T.

Q: Is the LM217D2T-TR suitable for the full operating temperature range of the original part?

A: Yes. The LM217D2T-TR operates across the identical temperature range of -25°C to 150°C.