VLMD3105-GS18 Equivalent & Substitute Parts

Part Overview

The VLMD3105-GS18 is a red LED indication component manufactured by Vishay Semiconductor Opto Division, featuring a 648nm dominant wavelength and 20mcd luminous intensity. This part operates at 1.8V forward voltage with a 10mA test current and is housed in a 2-SMD, J-Lead package with a 2.40mm diameter round lens. The VLMD3105-GS18 is currently classified as obsolete. Due to its obsolete status and limited availability, identifying equivalent substitute parts with matching electrical and mechanical specifications is necessary for design continuity and procurement planning.

Substiute Parts

VLMD3105-GS18

Vishay Semiconductor Opto DivisionIn Stock: 1213VLMD3105-GS18 Datasheet

Current PartRFQ

VLMD3105-GS08

Vishay Semiconductor Opto DivisionIn Stock: 17390VLMD3105-GS08 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The VLMD3105-GS08 qualifies as a parametric equivalent to the VLMD3105-GS18 based on the following matching criteria:

Electrical Parameters:

• Wavelength - Dominant: 648nm (identical)
• Wavelength - Peak: 650nm (identical)
• Millicandela Rating: 20mcd (identical)
• Voltage - Forward (Vf) (Typ): 1.8V (identical)
• Current - Test: 10mA (identical)
• Viewing Angle: 120° (identical)

Mechanical Parameters:

• Lens Style: Round with Flat Top (identical)
• Lens Size: 2.40mm Dia (identical)
• Package / Case: 2-SMD, J-Lead (identical)
• Size / Dimension: 3.00mm L x 2.80mm W (identical)
• Height (Max): 1.85mm (identical)
• Mounting Type: Surface Mount (identical)

Compliance Parameters:

• RoHS Status: ROHS3 Compliant (identical)
• Moisture Sensitivity Level (MSL): 2A (4 Weeks) (identical)

The primary distinction between these parts is packaging format and product status. The VLMD3105-GS08 is supplied in Tape & Reel (TR) format and maintains Active product status, whereas the VLMD3105-GS18 is obsolete.

Parameter Comparison

Engineering Selection Recommendations

The VLMD3105-GS08 is the direct substitute for the obsolete VLMD3105-GS18. Both parts share identical electrical characteristics, mechanical dimensions, and compliance certifications. The VLMD3105-GS08 maintains Active product status and is available in higher quantities (17,300 pcs in stock versus 1,128 pcs for the main part), making it the appropriate selection for new designs and ongoing production requirements. Both parts meet ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment. The substitution is based on complete parametric equivalence across all specified electrical, mechanical, and environmental parameters.

Frequently Asked Questions (FAQ)

Q: Can the VLMD3105-GS08 be used as a direct replacement for the VLMD3105-GS18?

A: Yes. The VLMD3105-GS08 is a parametric equivalent with identical electrical specifications (648nm wavelength, 20mcd, 1.8V forward voltage, 10mA test current), mechanical dimensions (3.00mm L x 2.80mm W, 1.85mm height), and package configuration (2-SMD, J-Lead). The parts are functionally interchangeable in circuit design and PCB layout.

Q: What is the difference between these two part numbers?

A: The primary difference is packaging format and product lifecycle status. The VLMD3105-GS18 is supplied in standard packaging and is obsolete. The VLMD3105-GS08 is supplied in Tape & Reel (TR) format and maintains Active product status with significantly higher inventory availability.

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

A: No. Both parts are ROHS3 compliant, REACH unaffected, and share identical Moisture Sensitivity Level (MSL) ratings of 2A (4 Weeks).

Q: Which part should be specified for new designs?

A: The VLMD3105-GS08 should be specified for new designs due to its Active product status and higher availability. The VLMD3105-GS18 is obsolete and should not be used for new applications.

Q: Are the optical and thermal characteristics identical?

A: Yes. Both parts have identical viewing angles (120°), lens styles (Round with Flat Top), lens sizes (2.40mm diameter), and dominant/peak wavelengths (648nm/650nm).