VLMG31K1L2-GS18 Equivalent & Substitute Parts

Part Overview

The VLMG31K1L2-GS18 is a green surface-mount LED indicator manufactured by Vishay Semiconductor Opto Division. This 2-SMD, J-Lead component operates at 2.2V forward voltage with a dominant wavelength of 569nm and is designed for discrete indication applications. The part is currently active in production with ROHS3 compliance and REACH unaffected status. Substitute parts are identified to address inventory availability, lead time requirements, or specific application constraints while maintaining electrical and mechanical compatibility.

Substiute Parts

VLMG31K1L2-GS18

Vishay Semiconductor Opto DivisionIn Stock: 3972VLMG31K1L2-GS18 Datasheet

Current PartRFQ

VLMG3102-GS08

Vishay Semiconductor Opto DivisionIn Stock: 3885VLMG3102-GS08 Datasheet

Parametric EquivalentRFQ

VLMG3105-GS08

Vishay Semiconductor Opto DivisionIn Stock: 8339VLMG3105-GS08 Datasheet

Parametric EquivalentRFQ

VLMG31K1L2-GS08

Vishay Semiconductor Opto DivisionIn Stock: 9469VLMG31K1L2-GS08 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the VLMG31K1L2-GS18 are qualified based on the following critical parameters that determine functional and mechanical compatibility:

Electrical Parameters: Forward voltage (2.2V), test current (10mA), dominant wavelength (569nm), and peak wavelength (565nm) must remain constant across all substitutes to ensure circuit compatibility and color consistency.

Optical Parameters: Millicandela rating, viewing angle (120°), lens style (Round with Flat Top), and lens size (2.40mm Dia) define the optical performance envelope. Variations in millicandela rating within the substitute group reflect manufacturing tolerance ranges for the same optical design.

Mechanical Parameters: Package type (2-SMD, J-Lead), supplier device package (2-PLCC), physical dimensions (3.00mm L x 2.80mm W, 1.85mm Max Height), and mounting type (Surface Mount) must match exactly to ensure PCB layout compatibility and assembly process alignment.

Compliance Parameters: All substitutes maintain ROHS3 compliance, REACH unaffected status, and identical MSL rating (2A, 4 Weeks) to preserve supply chain and environmental requirements.

The three qualified substitutes—VLMG3102-GS08, VLMG3105-GS08, and VLMG31K1L2-GS08—meet all these criteria and are interchangeable within the specified electrical and mechanical constraints.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts maintain active product status with ROHS3 compliance and REACH unaffected designation, ensuring regulatory alignment with the main part. Selection among VLMG3102-GS08, VLMG3105-GS08, and VLMG31K1L2-GS08 is determined by inventory availability and lead time requirements.

VLMG31K1L2-GS08 is the primary substitute, sharing the identical base product number (VLMG31) and series designation with the main part. This part carries the highest inventory level (9441 Pcs) and represents the most direct functional equivalent.

VLMG3105-GS08 offers the second-highest inventory availability (8251 Pcs) with matching millicandela rating (13mcd) and identical electrical specifications.

VLMG3102-GS08 provides an alternative with slightly elevated millicandela rating (14.6mcd) and adequate inventory (3790 Pcs). The increased luminous intensity remains within the optical design envelope of the 2-PLCC package and does not affect circuit compatibility.

All parts are suitable for direct substitution in surface-mount applications requiring green LED indication at 2.2V forward voltage with 120° viewing angle and 2.40mm lens diameter.

Frequently Asked Questions (FAQ)

Q: Can VLMG3102-GS08 be used as a direct replacement for VLMG31K1L2-GS18?

A: Yes. VLMG3102-GS08 meets all electrical and mechanical compatibility requirements. The millicandela rating of 14.6mcd is slightly higher than the main part's 13mcd but operates within the same optical design parameters for the 2-PLCC package. Forward voltage, wavelength, viewing angle, and physical dimensions are identical.

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

A: The GS18 and GS08 designations refer to different tape reel configurations for surface-mount delivery. Both parts use identical 2-PLCC component packaging and are mechanically and electrically interchangeable. The designation reflects supply chain and handling specifications only.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. VLMG3102-GS08, VLMG3105-GS08, and VLMG31K1L2-GS08 are all ROHS3 compliant with REACH unaffected status, matching the main part's regulatory requirements.

Q: Do the substitute parts have the same moisture sensitivity level?

A: Yes. All substitute parts carry MSL rating 2A (4 Weeks), identical to the main part. Storage and handling requirements are equivalent across all four parts.

Q: Which substitute part should be selected for new designs?

A: VLMG31K1L2-GS08 is recommended for new designs due to matching base product number and series designation with the main part, ensuring long-term supply chain consistency. VLMG3105-GS08 and VLMG3102-GS08 are qualified alternatives when inventory or lead time constraints apply.

Q: Can these parts be mixed in the same PCB assembly?

A: Yes. All substitute parts are mechanically and electrically interchangeable. Mixed usage within a single assembly does not affect circuit performance or optical consistency, as all parts maintain identical forward voltage, wavelength, viewing angle, and lens specifications.