SSL-LX2579GIW Equivalent & Substitute Parts

Part Overview

The SSL-LX2579GIW is an active status dual-color LED indicator manufactured by Lumex Opto/Components Inc. This through-hole component combines green and red LED elements in a single rectangular 2×5mm diffused lens package with common cathode configuration. The part is classified as Active product status with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when equivalent electrical performance, mechanical compatibility, and regulatory compliance can be maintained across alternative manufacturers or packaging configurations.

Substiute Parts

SSL-LX2579GIW

Lumex Opto/Components Inc.In Stock: 806SSL-LX2579GIW Datasheet

Current PartRFQ

SSL-LX2579IGW

Lumex Opto/Components Inc.In Stock: 1912SSL-LX2579IGW Datasheet

Parametric EquivalentRFQ

WP119EGWT

KingbrightIn Stock: 1209WP119EGWT Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SSL-LX2579GIW are identified based on strict electrical and mechanical parameter equivalence. The substitution logic is organized into two categories:

Parametric Equivalent (Direct Substitute): SSL-LX2579IGW qualifies as a parametric equivalent because it maintains identical electrical specifications (2.1V forward voltage for both colors, 20mA test current, 8mcd green and 14mcd red brightness), identical mechanical dimensions (5.00mm × 2.00mm lens, 10.50mm maximum height), identical optical properties (110° viewing angle, diffused white lens, rectangle flat-top style), identical configuration (common cathode, 3-lead radial package), and identical regulatory compliance (ROHS3, REACH Unaffected, MSL 1). The only difference is packaging format (Bulk versus tape/reel), which does not affect functional or mechanical compatibility.

Similar Manufacturer Part (Functional Substitute): WP119EGWT from Kingbright qualifies as a functional substitute because it maintains compatibility across the critical parameters that determine circuit-level substitutability: common cathode configuration, 3-lead radial package, identical lens dimensions (5.00mm × 2.00mm), identical mounting type (through-hole), identical viewing angle (110°), identical lens style (rectangle flat-top diffused white), identical maximum height (10.50mm), identical test current (20mA for both colors), and identical regulatory compliance (ROHS3, REACH Unaffected, MSL 1). Minor variations exist in forward voltage (2.2V green vs. 2.1V green; 2.0V red vs. 2.1V red) and brightness ratings (9mcd green vs. 8mcd green; 10mcd red vs. 14mcd red), which remain within acceptable tolerance ranges for indicator applications and do not prevent functional substitution in standard circuit designs.

Parameter Comparison

Engineering Selection Recommendations

SSL-LX2579IGW Selection Criteria: SSL-LX2579IGW is the primary substitute when component availability or supply chain requirements necessitate an alternative to SSL-LX2579GIW. Both parts maintain identical electrical and mechanical specifications with no functional differences. Selection of SSL-LX2579IGW is appropriate for applications where packaging format (bulk versus tape/reel) does not impose constraints. Both parts carry Active product status, ROHS3 compliance, and REACH Unaffected certification, ensuring equivalent regulatory standing for industrial and commercial applications.

WP119EGWT Selection Criteria: WP119EGWT from Kingbright is suitable for applications where forward voltage tolerance and brightness variation fall within acceptable design margins. The forward voltage differential (0.1V maximum for green, 0.1V maximum for red) and brightness variation (1mcd green, 4mcd red) are typical for indicator applications and do not compromise functional performance in standard circuit designs. WP119EGWT maintains identical mechanical compatibility, mounting configuration, and regulatory compliance. Selection of WP119EGWT is appropriate when Lumex supply is constrained and Kingbright availability provides supply chain advantage. Both parts carry Active product status and equivalent compliance certifications.

Compliance Verification: All three parts (SSL-LX2579GIW, SSL-LX2579IGW, WP119EGWT) maintain ROHS3 compliance and REACH Unaffected status, confirming suitability for regulated markets including European Union applications. MSL 1 (Unlimited) rating across all parts indicates no moisture sensitivity constraints during storage, handling, or assembly processes.

Frequently Asked Questions (FAQ)

Q: Can SSL-LX2579IGW be used as a direct replacement for SSL-LX2579GIW?

A: Yes. SSL-LX2579IGW is a parametric equivalent with identical electrical specifications (2.1V forward voltage for both green and red LEDs, 20mA test current, 8mcd green and 14mcd red brightness), identical mechanical dimensions (5.00mm × 2.00mm lens, 10.50mm maximum height), and identical configuration (common cathode, 3-lead radial through-hole package). The only difference is packaging format. No circuit modifications are required.

Q: What are the key differences between SSL-LX2579GIW and WP119EGWT?

A: The primary differences are manufacturer (Lumex versus Kingbright) and minor electrical variations. WP119EGWT has forward voltage of 2.2V for green (versus 2.1V) and 2.0V for red (versus 2.1V). Brightness ratings differ: WP119EGWT provides 9mcd green and 10mcd red compared to 8mcd green and 14mcd red for SSL-LX2579GIW. Mechanical dimensions, mounting type, lens configuration, and viewing angle are identical. These variations are within acceptable tolerance ranges for indicator applications.

Q: Are all three parts compatible with the same PCB footprint?

A: Yes. All three parts (SSL-LX2579GIW, SSL-LX2579IGW, WP119EGWT) share identical mechanical specifications: 5.00mm × 2.00mm lens dimensions, 10.50mm maximum height, 3-lead radial through-hole package configuration, and rectangle flat-top lens style. PCB footprints and lead spacing are identical across all three parts.

Q: Do forward voltage differences between SSL-LX2579GIW and WP119EGWT affect circuit design?

A: Forward voltage differences of 0.1V (green) and 0.1V (red) are typical within LED indicator applications and do not require circuit redesign for standard current-limiting resistor configurations. If the original design uses a fixed current-limiting resistor, the voltage drop across the resistor will adjust slightly to maintain approximately 20mA test current. For precision applications requiring exact voltage specifications, verify that the 0.1V variation falls within design tolerance before substitution.

Q: What is the significance of the common cathode configuration?

A: Common cathode configuration means all three parts share a single cathode lead, with separate anode leads for green and red LEDs. This configuration determines circuit connection topology and is identical across SSL-LX2579GIW, SSL-LX2579IGW, and WP119EGWT. Substitution between these parts does not require changes to cathode connection or anode drive circuitry.

Q: Are there any supply chain or inventory considerations for these substitutes?

A: SSL-LX2579GIW has 738 pieces in stock, SSL-LX2579IGW has 1882 pieces in stock, and WP119EGWT has 1133 pieces in stock. SSL-LX2579IGW and WP119EGWT offer higher inventory availability. Selection may be influenced by delivery timeline requirements and supply chain strategy.

Q: Do all three parts meet the same regulatory requirements?

A: Yes. All three parts (SSL-LX2579GIW, SSL-LX2579IGW, WP119EGWT) are ROHS3 compliant, REACH Unaffected, and carry MSL 1 (Unlimited) moisture sensitivity rating. Regulatory compliance is equivalent across all three parts for applications requiring EU market certification or equivalent standards.

Q: What is the difference between "Parametric Equivalent" and "Similar Manufacturer" classifications?

A: Parametric Equivalent (SSL-LX2579IGW) maintains identical electrical and mechanical specifications with no functional differences—only packaging format differs. Similar Manufacturer (WP119EGWT) maintains functional compatibility with minor variations in forward voltage and brightness that remain within acceptable tolerance ranges for indicator applications. Both classifications support substitution; the distinction clarifies the degree of specification matching.