SSL-LX305F4SYD Equivalent & Substitute Parts

Part Overview

The SSL-LX305F4SYD is a yellow diffused LED indicator in T-1 (3mm) through-hole package manufactured by Lumex Opto/Components Inc. This component is designed for discrete yellow LED indication applications with a forward voltage of 2V and brightness rating of 250 millicandela. The part maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when equivalent electrical and mechanical parameters align within acceptable tolerances for the intended application category.

Substiute Parts

SSL-LX305F4SYD

Lumex Opto/Components Inc.In Stock: 1242SSL-LX305F4SYD Datasheet

Current PartRFQ

SSL-LX3054SYD

Lumex Opto/Components Inc.In Stock: 6144SSL-LX3054SYD Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SSL-LX305F4SYD is determined by strict alignment of the following critical parameters:

Optical Parameters: Color (Yellow), lens transparency (Diffused), millicandela rating (250mcd), and peak wavelength (590nm) must remain constant across substitute parts.

Mechanical Parameters: Lens size (3mm, T-1), mounting type (Through Hole), and package configuration (Radial) must be identical.

Electrical Parameters: Forward voltage (Vf) and test current must fall within acceptable operating ranges for the application circuit. Variations in forward voltage up to ±0.1V are permissible when the substitute part maintains the same brightness rating and optical characteristics.

Compliance Parameters: RoHS3 compliance and MSL rating must be maintained or exceeded.

The substitute part SSL-LX3054SYD meets these criteria with a forward voltage of 2.1V (within tolerance of the 2V nominal specification) and identical optical and mechanical characteristics.

Parameter Comparison

Engineering Selection Recommendations

Both SSL-LX305F4SYD and SSL-LX3054SYD maintain Active product status with full ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Selection between these parts is based on circuit design requirements and forward voltage tolerance specifications.

The SSL-LX305F4SYD operates at a nominal forward voltage of 2V and is suitable for applications where lower voltage drop is required or where circuit design margins are tighter.

The SSL-LX3054SYD operates at a nominal forward voltage of 2.1V and provides an alternative when the substitute part's higher voltage specification aligns with circuit design parameters. The 0.1V difference is within typical LED manufacturing tolerances and does not affect optical output or brightness rating.

Both parts are identical in optical characteristics (250mcd, 590nm peak wavelength, 60° viewing angle, diffused yellow lens) and mechanical configuration (3mm T-1 through-hole radial package). The maximum height difference of 0.25mm (5.00mm versus 5.25mm) is negligible for standard through-hole PCB applications.

Selection should be based on forward voltage requirements of the specific circuit design and current availability from supplier inventory.

Frequently Asked Questions (FAQ)

Q: Can SSL-LX3054SYD be used as a direct replacement for SSL-LX305F4SYD?

A: Yes, SSL-LX3054SYD is a parametric equivalent substitute. Both parts share identical optical characteristics (250mcd brightness, 590nm wavelength, diffused yellow lens), mechanical configuration (3mm T-1 through-hole), and electrical test current (20mA). The forward voltage difference of 0.1V (2.1V versus 2V) is within acceptable tolerance for LED indicator applications and does not affect brightness or color output.

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

A: The forward voltage (Vf) difference of 0.1V between SSL-LX305F4SYD (2V) and SSL-LX3054SYD (2.1V) affects circuit design calculations for current-limiting resistor selection. Applications with tighter voltage margins should use the part matching the original specification. For most standard indicator applications, both parts operate within acceptable parameters.

Q: Are there any mechanical compatibility concerns?

A: Both parts use identical 3mm T-1 through-hole radial package configuration. The maximum height difference of 0.25mm (5.00mm versus 5.25mm) does not create mechanical interference in standard PCB layouts. Both parts fit standard LED mounting holes and clearances.

Q: Do both parts meet the same compliance standards?

A: Yes. Both SSL-LX305F4SYD and SSL-LX3054SYD are ROHS3 compliant, REACH unaffected, and carry MSL 1 (unlimited moisture sensitivity) rating. Both parts maintain identical environmental and regulatory compliance status.

Q: What packaging differences exist between these parts?

A: SSL-LX305F4SYD is supplied in standard packaging, while SSL-LX3054SYD is supplied in Bulk packaging. This difference affects order quantities and handling but does not impact component performance or electrical characteristics.

Q: Are the optical characteristics identical?

A: Yes. Both parts are yellow diffused LEDs with 250mcd brightness rating, 590nm peak wavelength, and 60° viewing angle. Optical output and color appearance are identical between the two parts.