AP1086T15L-U Equivalent & Substitute Parts

Part Overview

The AP1086T15L-U is a linear voltage regulator IC manufactured by Diodes Incorporated, designed to deliver a fixed 1.5V output at 1.5A in a TO-220-3 package. This device is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity. The part provides positive fixed output regulation with integrated over-current and over-temperature protection suitable for through-hole mounting applications.

Substiute Parts

AP1086T15L-U

Diodes IncorporatedIn Stock: 9954AP1086T15L-U Datasheet

Current PartRFQ

LMS1587IT-1.5/NOPB

Texas InstrumentsIn Stock: 1246LMS1587IT-1.5/NOPB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AP1086T15L-U is determined by the following critical parameters:

• Fixed Output Voltage: 1.5V (exact match required)
• Package Configuration: TO-220-3 (mechanical and thermal compatibility)
• Output Current Capability: Minimum 1.5A (equal or greater)
• Input Voltage Range: Compatible with 12V maximum input
• Protection Features: Over-current and over-temperature protection
• Mounting Type: Through-hole configuration

The LMS1587IT-1.5/NOPB from Texas Instruments meets all substitution criteria. This part maintains the identical fixed output voltage and package type while providing enhanced current capability (3A vs. 1.5A) and active product status.

Parameter Comparison

Engineering Selection Recommendations

The LMS1587IT-1.5/NOPB is the direct substitute for the AP1086T15L-U based on the following engineering criteria:

• Electrical Compatibility: Identical 1.5V fixed output voltage and TO-220-3 package ensure pin-for-pin compatibility without PCB modifications.
• Current Capability: The 3A output current of the LMS1587IT-1.5/NOPB exceeds the 1.5A requirement, providing design margin and thermal headroom.
• Product Lifecycle: The LMS1587IT-1.5/NOPB maintains active product status with ongoing manufacturer support, addressing the obsolescence of the original AP1086T15L-U.
• Regulatory Compliance: Both parts are ROHS3 compliant and REACH unaffected, maintaining compliance requirements.
• Thermal Performance: The extended operating temperature range of the TI device (-40°C to 125°C versus 0°C to 125°C) provides additional operational flexibility.

Frequently Asked Questions (FAQ)

Q: Can the LMS1587IT-1.5/NOPB directly replace the AP1086T15L-U without PCB modifications?

A: Yes. Both devices use the TO-220-3 package with identical pinout and electrical characteristics for the 1.5V fixed output. No PCB layout changes are required.

Q: What is the significance of the higher 3A current rating on the LMS1587IT-1.5/NOPB?

A: The LMS1587IT-1.5/NOPB provides 3A output current versus the 1.5A of the AP1086T15L-U. This higher rating does not affect compatibility; it provides additional design margin and reduces thermal stress in the application.

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

A: The LMS1587IT-1.5/NOPB specifies a dropout voltage of 1.3V at 3A and quiescent current of 7 mA. These parameters are within typical linear regulator specifications and do not impact functional substitution for applications designed around the original 1.5A part.

Q: Why is the AP1086T15L-U marked as obsolete?

A: The obsolete status indicates that Diodes Incorporated has discontinued this product line. The LMS1587IT-1.5/NOPB from Texas Instruments provides equivalent functionality with active manufacturer support.

Q: Are both parts RoHS compliant?

A: Yes. Both the AP1086T15L-U and LMS1587IT-1.5/NOPB are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements.

Q: What is the package compatibility between these regulators?

A: Both parts use the TO-220-3 through-hole package. This identical package ensures mechanical fit, thermal interface compatibility, and electrical pin correspondence without design modifications.