VLMK31R2S2-GS18 Equivalent & Substitute Parts

Part Overview

The VLMK31R2S2-GS18 is a red 630nm LED indication component manufactured by Vishay Semiconductor Opto Division in the VLM.3 series. This discrete 2-SMD, J-Lead surface mount LED operates at 1.9V forward voltage with a 210mcd brightness rating and 120° viewing angle. The part is currently listed as obsolete, making identification of equivalent substitute components essential for ongoing production and maintenance applications. The VLMK31R2S2-GS08 serves as a parametric equivalent with identical electrical and mechanical specifications but maintains active product status with improved availability.

Substiute Parts

VLMK31R2S2-GS18

Vishay Semiconductor Opto DivisionIn Stock: 788VLMK31R2S2-GS18 Datasheet

Current PartRFQ

VLMK31R2S2-GS08

Vishay Semiconductor Opto DivisionIn Stock: 1171VLMK31R2S2-GS08 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The VLMK31R2S2-GS08 qualifies as a parametric equivalent to the VLMK31R2S2-GS18 based on strict alignment of the following critical parameters:

• Wavelength specifications (dominant 630nm, peak 643nm)
• Color classification (red)
• Lens transparency (clear)
• Brightness output (210mcd)
• Electrical characteristics (1.9V forward voltage, 20mA test current)
• Optical performance (120° viewing angle)
• Physical form factor (2-SMD, J-Lead package, 2.40mm round lens with flat top)
• Dimensional compatibility (3.00mm L x 2.80mm W, 1.85mm max height)
• Compliance certifications (ROHS3, MSL 2A)

The substitution is valid across all specified electrical, optical, and mechanical parameters. The primary distinction is packaging format and product lifecycle status.

Parameter Comparison

Engineering Selection Recommendations

The VLMK31R2S2-GS08 is the direct parametric substitute for the obsolete VLMK31R2S2-GS18. All electrical, optical, and mechanical specifications are identical. The VLMK31R2S2-GS08 maintains active product status with confirmed inventory availability (1102 pcs), ensuring supply chain continuity for applications currently using the VLMK31R2S2-GS18.

Both parts carry ROHS3 compliance and identical moisture sensitivity ratings, supporting equivalent handling and storage requirements. The substitution is valid for all circuit designs and PCB layouts without modification.

The primary operational difference is packaging format: the VLMK31R2S2-GS18 is supplied in bulk format, while the VLMK31R2S2-GS08 is supplied in Tape & Reel (TR) format. This distinction affects procurement and assembly processes but does not impact component performance or compatibility.

Frequently Asked Questions (FAQ)

Q: Can the VLMK31R2S2-GS08 replace the VLMK31R2S2-GS18 in existing designs?

A: Yes. All electrical, optical, and mechanical parameters are identical. No circuit modifications or PCB layout changes are required.

Q: What is the difference between bulk and Tape & Reel packaging?

A: Bulk packaging supplies components loose, while Tape & Reel (TR) packaging supplies components on continuous tape for automated assembly equipment. Both formats contain the same component with identical specifications.

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

A: No. Both parts carry ROHS3 compliance and identical MSL 2A (4 Weeks) moisture sensitivity ratings. Storage and handling procedures are equivalent.

Q: Why is the VLMK31R2S2-GS18 listed as obsolete?

A: Product lifecycle status reflects manufacturer discontinuation decisions. The VLMK31R2S2-GS08 remains in active production with equivalent specifications.

Q: Will the VLMK31R2S2-GS08 work with the same forward voltage and current specifications?

A: Yes. Both parts operate at 1.9V forward voltage with 20mA test current and deliver identical 210mcd brightness output.

Q: Are the physical dimensions identical?

A: Yes. Both parts use the 2-SMD, J-Lead package with 3.00mm L x 2.80mm W dimensions and 1.85mm maximum height. The 2.40mm diameter round lens with flat top is identical on both parts.