VLMK3102-GS18 Equivalent & Substitute Parts

Part Overview

The VLMK3102-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 new designs and ongoing production requirements. The component delivers 39mcd luminous intensity with a 120° viewing angle, suitable for standard LED indication applications requiring red wavelength output.

Substiute Parts

VLMK3102-GS18

Vishay Semiconductor Opto DivisionIn Stock: 763VLMK3102-GS18 Datasheet

Current PartRFQ

VLMD31M2P1-GS08

Vishay Semiconductor Opto DivisionIn Stock: 3118VLMD31M2P1-GS08 Datasheet

Parametric EquivalentRFQ

VLMK3102-GS08

Vishay Semiconductor Opto DivisionIn Stock: 18835VLMK3102-GS08 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute components for the VLMK3102-GS18 are identified based on strict electrical and mechanical parameter alignment. The primary substitution criteria are:

• Package type: 2-SMD, J-Lead configuration
• Mounting method: Surface mount
• Physical dimensions: 3.00mm L x 2.80mm W, 1.85mm maximum height
• Lens specifications: Round with flat top, 2.40mm diameter, clear transparency
• Electrical performance: Red color, 39mcd luminous intensity, 120° viewing angle
• Compliance: ROHS3 compliant, MSL 2A (4 Weeks)

Two substitute parts meet these criteria and are available from the same manufacturer with active product status.

Parameter Comparison

Engineering Selection Recommendations

VLMK3102-GS08 is the direct functional equivalent to the obsolete VLMK3102-GS18. Both components share identical electrical specifications (1.9V forward voltage, 630nm dominant wavelength) and mechanical dimensions. The VLMK3102-GS08 is available in active product status with significantly higher inventory (18,790 pcs) compared to the original part. This substitute maintains full compatibility with existing designs without circuit modification.

VLMD31M2P1-GS08 provides an alternative red LED indication solution with comparable performance characteristics. The primary difference is a slightly higher dominant wavelength (648nm versus 630nm) and lower forward voltage (1.8V versus 1.9V). This part is also in active product status with substantial inventory availability (3,068 pcs). Selection of this substitute requires circuit evaluation to confirm voltage compatibility and acceptable wavelength variation for the application.

Both substitute parts carry ROHS3 compliance and identical MSL ratings, ensuring environmental and regulatory compatibility with the original component.

Frequently Asked Questions (FAQ)

Q: Can VLMK3102-GS08 be used as a direct replacement for VLMK3102-GS18?

A: Yes. The VLMK3102-GS08 is electrically and mechanically identical to the VLMK3102-GS18. Both components feature 1.9V forward voltage, 630nm dominant wavelength, 39mcd luminous intensity, and identical 2-SMD J-Lead package dimensions. The primary difference is product status (active versus obsolete) and packaging format (tape & reel versus bulk).

Q: What is the wavelength difference between VLMK3102-GS08 and VLMD31M2P1-GS08?

A: VLMK3102-GS08 has a dominant wavelength of 630nm with peak wavelength of 643nm. VLMD31M2P1-GS08 has a dominant wavelength of 648nm with peak wavelength of 650nm. This 18nm difference in dominant wavelength may affect color perception in applications where specific red hue is critical.

Q: Are there voltage differences between the substitute parts?

A: VLMK3102-GS08 maintains the original 1.9V forward voltage specification. VLMD31M2P1-GS08 operates at 1.8V forward voltage. Circuit designs with fixed current sources are unaffected by this difference. Designs using series resistors require recalculation to maintain proper LED current.

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

A: Yes. All three components share identical dimensions: 3.00mm length, 2.80mm width, and 1.85mm maximum height. The 2-SMD J-Lead package configuration and 2.40mm diameter round lens with flat top are consistent across all parts.

Q: What packaging formats are available for these substitutes?

A: VLMK3102-GS18 is supplied in bulk packaging. Both substitute parts (VLMK3102-GS08 and VLMD31M2P1-GS08) are available in tape & reel (TR) format, which is standard for high-volume production environments.

Q: Are all parts RoHS compliant?

A: Yes. VLMK3102-GS18, VLMK3102-GS08, and VLMD31M2P1-GS08 are all ROHS3 compliant with identical moisture sensitivity level (MSL) ratings of 2A (4 Weeks).