LT Y87S-P2S1-35-0-10-R18-Z Equivalent & Substitute Parts

Part Overview

The LT Y87S-P2S1-35-0-10-R18-Z is a SIDELED green surface-mount LED with a dominant wavelength of 532nm, designed for indication and lighting applications. This component features a 2-SMD flat lead package with a 120° viewing angle and right-angle mounting configuration. The part is classified as obsolete, necessitating identification of active equivalent components to maintain design continuity and ensure supply chain availability for new production and replacement applications.

Substiute Parts

LT Y87S-P2S1-35-0-10-R18-Z

ams-OSRAM USA INC.In Stock: 879LT Y87S-P2S1-35-0-10-R18-Z Datasheet

Current PartRFQ

LT Y1SG-BACB-35-1-20-R18-Z

ams-OSRAM USA INC.In Stock: 6985LT Y1SG-BACB-35-1-20-R18-Z Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete LT Y87S-P2S1-35-0-10-R18-Z is based on the following critical parameters:

Color and Wavelength Compatibility: Both the main part and substitute operate in the green spectrum. The main part specifies 532nm (523nm ~ 541nm), while the substitute operates at 523nm dominant wavelength, placing it within the acceptable green LED range for indication applications.

Mounting Configuration: Both components utilize surface-mount, right-angle mounting, ensuring mechanical compatibility with existing PCB layouts designed for the original part.

Viewing Angle: Both parts maintain a 120° viewing angle, preserving optical performance characteristics in the application.

Regulatory Compliance: Both components are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Package Type: Both utilize 2-SMD packages, though the main part uses flat leads while the substitute uses J-leads. This represents a package variant within the same SMD family.

The substitute part LT Y1SG-BACB-35-1-20-R18-Z is an active product from the same manufacturer, providing continuity for applications requiring green LED indication with equivalent optical and mechanical characteristics.

Parameter Comparison

Engineering Selection Recommendations

The LT Y1SG-BACB-35-1-20-R18-Z serves as the active equivalent for the obsolete LT Y87S-P2S1-35-0-10-R18-Z. Selection of this substitute is supported by the following engineering factors:

Product Status Transition: The substitute is an active product with current manufacturing support, ensuring long-term availability and supply chain stability compared to the obsolete main part.

Regulatory Compliance: Both components maintain ROHS3 compliance and REACH unaffected status, satisfying current environmental regulations without requiring design modifications.

Optical Characteristics: The substitute's 523nm dominant wavelength falls within the green spectrum range of the main part (523nm ~ 541nm), providing equivalent visual indication performance.

Mechanical Compatibility: Both components feature surface-mount, right-angle mounting with 120° viewing angles, enabling direct substitution in existing PCB designs with minimal layout modifications.

Electrical Parameter Differences: The substitute operates at a lower forward voltage (2.85V versus 3.4V) and higher test current (20mA versus 10mA). Circuit designs must accommodate these electrical differences through appropriate current-limiting resistor adjustments to maintain proper LED operation and brightness levels.

Frequently Asked Questions (FAQ)

Q: Can the LT Y1SG-BACB-35-1-20-R18-Z directly replace the LT Y87S-P2S1-35-0-10-R18-Z without PCB modifications?

A: The substitute maintains the same surface-mount, right-angle mounting configuration and 120° viewing angle. However, the lead style differs (J-lead versus flat lead), requiring verification of PCB pad compatibility. Additionally, the electrical characteristics differ, necessitating circuit adjustments for proper operation.

Q: What electrical circuit adjustments are required when substituting this part?

A: The substitute operates at 2.85V forward voltage compared to 3.4V for the main part, and the test current is 20mA versus 10mA. Current-limiting resistor values must be recalculated based on the supply voltage and desired LED current to maintain proper brightness and prevent component damage.

Q: Are both parts compliant with current environmental regulations?

A: Yes. Both the main part and substitute are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic components.

Q: What is the difference between the packaging formats?

A: The main part is supplied in Cut Tape (CT) format, while the substitute is supplied in Tape & Reel (TR) format. This affects handling, storage, and automated assembly processes but does not impact component functionality.

Q: Do both parts have the same wavelength specification?

A: The main part specifies 532nm with a range of 523nm to 541nm. The substitute specifies 523nm dominant wavelength, which falls within the acceptable green LED range and the main part's specified range, ensuring color consistency for indication applications.

Q: What is the difference in moisture sensitivity between these parts?

A: The main part has MSL 2 (1 Year), while the substitute has MSL 4 (72 Hours). The substitute requires more stringent moisture control during storage and handling, with a shorter shelf life before reflow soldering.