VLMS31K1L2-GS18 Equivalent & Substitute Parts

Part Overview

The VLMS31K1L2-GS18 is a red 630nm LED indication component manufactured by Vishay Semiconductor Opto Division in a 2-SMD, J-Lead surface mount package. This part is classified as obsolete, making substitute components necessary for ongoing production and design requirements. The component delivers 13mcd luminous intensity with a 1.9V typical forward voltage and 120° viewing angle, suitable for indicator applications requiring discrete red LED functionality.

Substiute Parts

VLMS31K1L2-GS18

Vishay Semiconductor Opto DivisionIn Stock: 861VLMS31K1L2-GS18 Datasheet

Current PartRFQ

VLMS30K1L2-GS08

Vishay Semiconductor Opto DivisionIn Stock: 38255VLMS30K1L2-GS08 Datasheet

Parametric EquivalentRFQ

VLMS30K2L2-GS08

Vishay Semiconductor Opto DivisionIn Stock: 942VLMS30K2L2-GS08 Datasheet

Parametric EquivalentRFQ

VLMS31K1L2-GS08

Vishay Semiconductor Opto DivisionIn Stock: 9222VLMS31K1L2-GS08 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the VLMS31K1L2-GS18 is determined by the following critical parameters:

Mechanical Compatibility: Package type (2-SMD, J-Lead), physical dimensions (3.00mm L x 2.80mm W, 1.85mm max height), lens configuration (2.40mm diameter round with flat top), and surface mount mounting type must remain identical.

Optical Compatibility: Red color (630nm dominant wavelength) and 120° viewing angle must be maintained. Millicandela rating of 13mcd establishes the luminous intensity requirement.

Electrical Compatibility: Forward voltage (Vf) and test current parameters define circuit integration requirements. Substitutes must operate within acceptable voltage and current ranges for the application.

Regulatory Compliance: RoHS3 compliance and REACH unaffected status are mandatory for equivalent parts.

Three substitute parts meet these criteria:

1. VLMS31K1L2-GS08 — Identical electrical and optical specifications to the main part; differs only in packaging format (Tape & Reel vs. bulk); active product status.

2. VLMS30K1L2-GS08 — Lower forward voltage (1.8V vs. 1.9V) and lower test current (2mA vs. 10mA); maintains 13mcd, 630nm wavelength, and identical mechanical form factor; active product status.

3. VLMS30K2L2-GS08 — Lower forward voltage (1.8V vs. 1.9V) and lower test current (2mA vs. 10mA); slightly higher millicandela rating (14mcd vs. 13mcd); maintains 630nm wavelength and identical mechanical form factor; active product status.

Parameter Comparison

Engineering Selection Recommendations

VLMS31K1L2-GS08 is the direct functional equivalent to the obsolete VLMS31K1L2-GS18. Both parts share identical electrical specifications (1.9V forward voltage, 10mA test current), optical output (13mcd, 630nm wavelength), and mechanical form factor. The only difference is packaging format (Tape & Reel vs. bulk). This part maintains active product status with Vishay Semiconductor Opto Division and carries full RoHS3 compliance and REACH unaffected certification. This is the preferred substitute for direct replacement in existing designs.

VLMS30K1L2-GS08 and VLMS30K2L2-GS08 are parametric equivalents suitable for applications where lower forward voltage (1.8V) and lower test current (2mA) are acceptable. Both maintain the 630nm red wavelength, 120° viewing angle, and identical mechanical dimensions. VLMS30K2L2-GS08 provides slightly higher luminous intensity (14mcd vs. 13mcd). These parts are active products with full regulatory compliance. Selection between these variants depends on circuit design requirements for voltage and current parameters.

All three substitute parts maintain identical mechanical compatibility, ensuring direct PCB footprint compatibility with the obsolete VLMS31K1L2-GS18.

Frequently Asked Questions (FAQ)

Q: Can VLMS31K1L2-GS08 be used as a direct replacement for VLMS31K1L2-GS18?

A: Yes. VLMS31K1L2-GS08 is functionally identical to VLMS31K1L2-GS18 in all electrical, optical, and mechanical parameters. The difference is packaging format (Tape & Reel vs. bulk). Both operate at 1.9V forward voltage, 10mA test current, and deliver 13mcd at 630nm wavelength. PCB footprint and mounting requirements are identical.

Q: What is the difference between VLMS30K1L2-GS08 and VLMS30K2L2-GS08?

A: Both parts operate at 1.8V forward voltage and 2mA test current. The primary difference is millicandela rating: VLMS30K1L2-GS08 delivers 13mcd while VLMS30K2L2-GS08 delivers 14mcd. Both maintain 630nm dominant wavelength and identical mechanical form factor. Selection depends on luminous intensity requirements for the application.

Q: Can I use VLMS30 series parts (1.8V) in place of VLMS31 series parts (1.9V)?

A: VLMS30 series parts operate at lower forward voltage (1.8V vs. 1.9V) and lower test current (2mA vs. 10mA). Substitution is possible if circuit design accommodates these electrical parameter differences. All parts maintain identical mechanical compatibility and optical wavelength (630nm). Circuit validation is required to confirm voltage and current compatibility.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. VLMS31K1L2-GS08, VLMS30K1L2-GS08, and VLMS30K2L2-GS08 are all ROHS3 compliant and REACH unaffected. All parts carry identical regulatory certification status.

Q: What is the packaging difference between GS18 and GS08 variants?

A: GS18 indicates bulk packaging while GS08 indicates Tape & Reel (TR) packaging. Both variants contain identical components. Packaging selection depends on production volume and assembly process requirements. Electrical, optical, and mechanical specifications remain unchanged between packaging variants.

Q: Do all substitute parts have the same physical dimensions?

A: Yes. All substitute parts maintain identical mechanical specifications: 3.00mm length, 2.80mm width, 1.85mm maximum height, 2.40mm diameter round lens with flat top, and 2-SMD J-Lead package configuration. Direct PCB footprint compatibility is guaranteed across all parts.