SSL-LX4073ID Equivalent & Substitute Parts

Part Overview

The SSL-LX4073ID is a red diffused LED indicator manufactured by Lumex Opto/Components Inc., designed for through-hole mounting applications requiring discrete 2V radial configuration. This component is classified as obsolete, necessitating identification of active equivalent parts to maintain design continuity and ensure supply chain availability. The part delivers 40 millicandela output with a 60-degree viewing angle and operates at 20mA test current.

Substiute Parts

SSL-LX4073ID

Lumex Opto/Components Inc.In Stock: 926SSL-LX4073ID Datasheet

Current PartRFQ

WP1503ID

KingbrightIn Stock: 2603WP1503ID Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SSL-LX4073ID is determined by strict alignment of the following parameters:

Critical Matching Parameters:

• Color: Red
• Lens Transparency: Diffused
• Millicandela Rating: 40mcd
• Voltage - Forward (Vf): 2V
• Current - Test: 20mA
• Viewing Angle: 60°
• Mounting Type: Through Hole
• Configuration: Standard
• Package / Case: Radial
• RoHS Status: ROHS3 Compliant

The WP1503ID manufactured by Kingbright satisfies all critical parameters required for direct substitution. Both components share identical electrical characteristics (2V forward voltage, 20mA test current, 40mcd output, 60-degree viewing angle) and mechanical mounting specifications (through-hole radial configuration). The primary distinction is physical form factor: the SSL-LX4073ID features a 4.80mm diameter lens with 7.20mm maximum height, while the WP1503ID utilizes a 5mm diameter T-1 3/4 lens package with 8.60mm maximum height. This dimensional difference requires PCB layout verification prior to implementation.

Parameter Comparison

Engineering Selection Recommendations

The WP1503ID is the qualified substitute for SSL-LX4073ID applications. Selection is based on the following engineering criteria:

Product Status Alignment: The SSL-LX4073ID is obsolete; the WP1503ID maintains active production status, ensuring long-term supply chain continuity and component availability.

Regulatory Compliance: Both components maintain ROHS3 compliance and REACH unaffected status, satisfying environmental and regulatory requirements for new designs and legacy system maintenance.

Electrical Equivalence: Identical forward voltage (2V), test current (20mA), luminous intensity (40mcd), and viewing angle (60°) ensure functional interchangeability in circuit applications without modification to drive circuitry or current-limiting resistor values.

Mechanical Compatibility Consideration: The WP1503ID exhibits increased physical dimensions (5mm lens diameter, 8.60mm height versus 4.80mm and 7.20mm respectively). PCB layout verification is required to confirm clearance and mounting hole compatibility. Lens diameter increase may affect optical performance in constrained mechanical enclosures.

Wavelength Variance: Peak wavelength differs by 8nm (635nm to 627nm). Both values remain within the red spectrum range and produce visually equivalent color perception under standard illumination conditions.

Frequently Asked Questions (FAQ)

Q: Can WP1503ID directly replace SSL-LX4073ID without circuit modification?

A: Yes. Electrical parameters are identical (2V forward voltage, 20mA test current, 40mcd output). No resistor or drive circuit changes are required. Physical form factor differences require PCB layout verification.

Q: What is the primary reason for substitution?

A: SSL-LX4073ID is classified as obsolete. WP1503ID is an active production component from Kingbright, providing assured supply availability and long-term design support.

Q: Are there dimensional constraints I should consider?

A: Yes. WP1503ID is larger: 5mm lens diameter (versus 4.80mm) and 8.60mm maximum height (versus 7.20mm). Confirm PCB mounting hole spacing and mechanical clearance in your enclosure design before implementation.

Q: Do both components meet current environmental standards?

A: Yes. Both SSL-LX4073ID and WP1503ID are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: Is the wavelength difference (635nm to 627nm) significant?

A: No. The 8nm variance remains within the red spectrum and produces no perceptible color difference in visual indication applications. Both wavelengths are classified as red LEDs.

Q: What packaging formats are available?

A: SSL-LX4073ID is supplied in bulk packaging. WP1503ID is also available in bulk packaging, matching the original component's distribution format.

Q: Are moisture sensitivity levels equivalent?

A: Yes. Both components carry MSL rating 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.