VLRK31R1S2-GS18 Equivalent & Substitute Parts

Part Overview

The VLRK31R1S2-GS18 is a red 630nm LED indication component manufactured by Vishay Semiconductor Opto Division. This surface mount, bottom entry LED features a 2.1V forward voltage and 199mcd brightness rating in a 2-SMD Z-Bend package configuration. The part is currently listed as obsolete, which necessitates identification of equivalent substitute components for ongoing production and maintenance applications. Active equivalent parts maintain identical electrical and mechanical specifications while offering improved availability.

Substiute Parts

VLRK31R1S2-GS18

Vishay Semiconductor Opto DivisionIn Stock: 904VLRK31R1S2-GS18 Datasheet

Current PartRFQ

VLRK31R1S2-GS08

Vishay Semiconductor Opto DivisionIn Stock: 1405VLRK31R1S2-GS08 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the VLRK31R1S2-GS18 is determined by strict equivalence across the following critical parameters:

Electrical specifications: Dominant wavelength (630nm), peak wavelength (643nm), forward voltage (2.1V), and test current (20mA) must remain identical to ensure proper circuit operation and color consistency.

Optical characteristics: Millicandela rating (199mcd), viewing angle (120°), lens style (round with flat top), and lens size (2.40mm diameter) must match to preserve brightness and visibility performance in the application.

Mechanical compatibility: Mounting type (surface mount, bottom entry), package configuration (2-SMD Z-Bend), and physical dimensions (3.20mm L x 2.80mm W, 2.10mm max height) must be identical for PCB assembly compatibility.

Compliance and handling: RoHS3 compliance and MSL rating (2A, 4 weeks) must be maintained for regulatory and manufacturing process requirements.

The VLRK31R1S2-GS08 qualifies as a parametric equivalent substitute, differing only in packaging format (tape & reel versus bulk) and product status (active versus obsolete).

Parameter Comparison

Engineering Selection Recommendations

The VLRK31R1S2-GS08 is the direct parametric equivalent for the obsolete VLRK31R1S2-GS18. Both components share identical electrical, optical, and mechanical specifications. The primary distinction is product status: the GS08 variant is currently active with confirmed inventory availability (1324 pcs), whereas the GS18 is obsolete.

For new designs and production continuity, the VLRK31R1S2-GS08 is the appropriate selection. Both parts maintain ROHS3 compliance and identical MSL ratings, ensuring compatibility with existing manufacturing processes and regulatory requirements. The packaging format difference (tape & reel versus bulk) reflects standard industry practice for active components and does not affect electrical or mechanical performance.

Frequently Asked Questions (FAQ)

Q: Can the VLRK31R1S2-GS08 be used as a direct replacement for the VLRK31R1S2-GS18?

A: Yes. The GS08 is a parametric equivalent with identical electrical, optical, and mechanical specifications. The only differences are product status (active versus obsolete) and packaging format (tape & reel versus bulk).

Q: What is the significance of the packaging format difference?

A: The GS18 is supplied in bulk packaging, while the GS08 is supplied in tape & reel format. This reflects standard industry practice for active components and does not affect component performance or PCB assembly compatibility.

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

A: No. Both components are ROHS3 compliant and carry identical MSL ratings (2A, 4 weeks), ensuring compatibility with the same manufacturing and storage protocols.

Q: Why is the GS18 listed as obsolete?

A: Product obsolescence typically reflects manufacturer discontinuation decisions. The GS08 variant remains in active production with equivalent specifications.

Q: What parameters must remain identical for substitution?

A: Wavelength (630nm dominant, 643nm peak), forward voltage (2.1V), brightness (199mcd), viewing angle (120°), lens configuration (round with flat top, 2.40mm diameter), mounting type (surface mount, bottom entry), package type (2-SMD Z-Bend), and physical dimensions (3.20mm L x 2.80mm W, 2.10mm max height) must all match exactly.