SSL-LX308F4GD Equivalent & Substitute Parts

Part Overview

The SSL-LX308F4GD is an active green LED indication component manufactured by Lumex Opto/Components Inc. This through-hole mounted T-1 LED features a diffused lens with 30mcd brightness rating and operates at 2.2V forward voltage. The component is ROHS3 compliant and maintains unlimited moisture sensitivity rating (MSL 1). Finding equivalent substitute parts becomes necessary when managing supply chain continuity, inventory optimization, or when the primary manufacturer part experiences extended lead times or allocation constraints.

Substiute Parts

SSL-LX308F4GD

Lumex Opto/Components Inc.In Stock: 1015SSL-LX308F4GD Datasheet

Current PartRFQ

151031VS06000

Würth ElektronikIn Stock: 17598151031VS06000 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SSL-LX308F4GD are identified based on strict electrical, optical, and mechanical parameter matching. The substitution logic requires alignment across the following critical parameters:

Electrical Parameters: Forward voltage (Vf) of 2.2V and test current of 20mA must be maintained to ensure circuit compatibility without redesign.

Optical Parameters: Green color, diffused lens transparency, 30mcd brightness rating, 60° viewing angle, and peak wavelength in the 560-568nm range ensure functional equivalence in indication applications.

Mechanical Parameters: 3mm round lens with domed top, through-hole mounting configuration, and radial package type must match to enable direct board-level substitution without mechanical redesign.

Compliance Parameters: ROHS3 compliance and MSL 1 rating ensure regulatory and environmental compatibility.

The substitute part 151031VS06000 from Würth Elektronik meets all these criteria and is classified as a direct equivalent.

Parameter Comparison

Engineering Selection Recommendations

The 151031VS06000 from Würth Elektronik qualifies as a direct substitute for the SSL-LX308F4GD based on complete alignment of electrical, optical, and mechanical parameters. Both components are ROHS3 compliant and carry MSL 1 rating, ensuring regulatory and environmental compatibility.

The primary design consideration is the height differential: the Würth part measures 5.55mm maximum height compared to 7.75mm for the Lumex component. This 2.2mm reduction in height is mechanically favorable for applications with space constraints and does not compromise electrical or optical performance. The shorter profile may improve PCB layout flexibility without requiring circuit redesign.

Peak wavelength values (565nm for Lumex, 560nm for Würth) both fall within the standard green LED spectrum and produce visually equivalent indication in human perception. This minor wavelength difference does not affect functional compatibility in indication applications.

Selection between these parts should be based on availability, lead time, cost, and inventory management objectives rather than technical performance differences.

Frequently Asked Questions (FAQ)

Q: Can the 151031VS06000 be used as a direct replacement for SSL-LX308F4GD without PCB modifications?

A: Yes. Both components share identical electrical parameters (2.2V forward voltage, 20mA test current), optical specifications (30mcd, 60° viewing angle, diffused green lens), and through-hole radial mounting configuration. No circuit redesign is required.

Q: What is the significance of the height difference between these parts?

A: The Würth part is 2.2mm shorter (5.55mm vs 7.75mm). This dimensional difference is mechanically favorable and does not affect electrical or optical performance. Applications with height-constrained PCB layouts may benefit from the shorter profile.

Q: Are the wavelength values (565nm vs 560nm) functionally equivalent?

A: Yes. Both wavelengths fall within the standard green LED spectrum and produce visually identical green indication. The 5nm difference is imperceptible to human vision and does not affect application performance.

Q: Do both parts meet the same compliance standards?

A: Yes. Both SSL-LX308F4GD and 151031VS06000 are ROHS3 compliant, REACH unaffected, and carry MSL 1 (unlimited moisture sensitivity) rating. Regulatory and environmental compatibility is maintained.

Q: What parameters must remain constant when selecting a substitute?

A: Critical parameters for substitution are: green color, diffused lens, 30mcd brightness, 3mm round domed lens, 2.2V forward voltage, 20mA test current, 60° viewing angle, through-hole mounting, and radial package configuration. Deviation from any of these parameters requires application-specific validation.

Q: Can these parts be used interchangeably in existing inventory?

A: Yes. The electrical and optical equivalence permits interchangeable use in production and field applications. The shorter height of the Würth part may require verification in applications with tight vertical clearance constraints.