VLMKE3400-GS18 Equivalent & Substitute Parts

Part Overview

The VLMKE3400-GS18 is a dual-color LED indicator from Vishay Semiconductor Opto Division, combining red (630nm) and yellow (588nm) light emission in a single 4-SMD, J-Lead surface mount package. This component is classified as obsolete, which necessitates identification of active equivalent parts to maintain design continuity and ensure supply chain availability for new production runs and field replacements.

Substiute Parts

VLMKE3400-GS18

Vishay Semiconductor Opto DivisionIn Stock: 1152VLMKE3400-GS18 Datasheet

Current PartRFQ

VLMKE3400-GS08

Vishay Semiconductor Opto DivisionIn Stock: 4474VLMKE3400-GS08 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the VLMKE3400-GS18 is determined by strict equivalence across the following critical parameters:

• Color Configuration & Wavelength: Red (630nm dominant, 643nm peak) and Yellow (588nm dominant, 590nm peak) independent dual-color operation
• Electrical Characteristics: Forward voltage of 1.9V (Red) and 2V (Yellow) at 20mA test current
• Optical Performance: 118mcd Red and 185mcd Yellow brightness at specified test conditions with 120° viewing angle
• Physical Form Factor: 4-SMD, J-Lead package (4-PLCC) with 2.40mm diameter round lens with flat top, clear transparency
• Mechanical Dimensions: 3.00mm L × 2.80mm W × 1.85mm H (max)
• Compliance & Regulatory: ROHS3 compliance, REACH unaffected status, EAR99 classification

The VLMKE3400-GS08 meets all these criteria and serves as the parametric equivalent for the obsolete VLMKE3400-GS18.

Parameter Comparison

Engineering Selection Recommendations

The VLMKE3400-GS08 is the direct parametric equivalent for the obsolete VLMKE3400-GS18. All electrical, optical, and mechanical specifications are identical. The primary differences are:

Packaging Format: The VLMKE3400-GS08 is supplied in Tape & Reel (TR) format, whereas the VLMKE3400-GS18 was supplied in bulk packaging. This difference does not affect component functionality or performance in circuit applications.

Moisture Sensitivity Level (MSL): The VLMKE3400-GS08 carries an MSL rating of 2A (4 weeks), which is superior to the VLMKE3400-GS18's MSL rating of 4 (72 hours). This improvement provides extended shelf life and reduced risk of moisture-induced failures during storage and handling.

Compliance & Regulatory Status: Both parts maintain ROHS3 compliance, REACH unaffected status, and EAR99 classification, ensuring regulatory continuity for applications subject to environmental and export control requirements.

Product Status: The VLMKE3400-GS08 is active and in production, ensuring long-term availability and supply chain stability compared to the obsolete VLMKE3400-GS18.

Frequently Asked Questions (FAQ)

Q: Can the VLMKE3400-GS08 be used as a direct replacement for the VLMKE3400-GS18 in existing designs?

A: Yes. The VLMKE3400-GS08 is electrically and mechanically equivalent to the VLMKE3400-GS18. All electrical characteristics (forward voltage, test current, brightness), optical properties (wavelength, viewing angle), and physical dimensions are identical. No circuit modifications are required.

Q: What is the difference between the GS18 and GS08 part number suffixes?

A: The suffix designates the packaging format and moisture sensitivity level. The GS18 was supplied in bulk packaging with MSL 4 rating. The GS08 is supplied in Tape & Reel format with improved MSL 2A rating. The core component specifications remain unchanged.

Q: Does the Tape & Reel packaging of the VLMKE3400-GS08 affect component performance?

A: No. Tape & Reel packaging is a standard format for surface mount components and does not alter electrical or optical performance. It is suitable for automated assembly processes and provides improved handling and storage efficiency.

Q: Is the improved MSL rating of the VLMKE3400-GS08 significant?

A: Yes. The MSL 2A rating (4 weeks) of the VLMKE3400-GS08 provides extended shelf life compared to the MSL 4 rating (72 hours) of the VLMKE3400-GS18. This reduces the risk of moisture absorption and associated reliability issues during storage and handling, particularly in humid environments.

Q: Are there any compliance or regulatory differences between the two parts?

A: No. Both the VLMKE3400-GS18 and VLMKE3400-GS08 maintain identical ROHS3 compliance, REACH unaffected status, and EAR99 classification. No additional compliance documentation or certifications are required when transitioning from the obsolete to the active part.

Q: What is the current availability status of the VLMKE3400-GS08?

A: The VLMKE3400-GS08 is active and in production with 4450 pieces in stock. The VLMKE3400-GS18 is obsolete with limited remaining inventory of 1122 pieces. New designs and production runs should specify the VLMKE3400-GS08 to ensure supply chain continuity.