SSF-LXH475ID LED Circuit Board Indicator Equivalent & Substitute Parts

Part Overview

The SSF-LXH475ID is a quad red LED circuit board indicator manufactured by Lumex Opto/Components Inc., configured as a 4-high assembly with diffused red lenses. This component is designed for through-hole, right-angle mounting applications requiring visual status indication. The part is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement planning. The component operates at 2.0V with a 30mA current rating and delivers 40mcd luminous intensity at a 60° viewing angle.

Substiute Parts

SSF-LXH475ID

Lumex Opto/Components Inc.In Stock: 1003SSF-LXH475ID Datasheet

Current PartRFQ

5680101111F

DialightIn Stock: 18115680101111F Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SSF-LXH475ID is determined by the following critical parameters:

Primary Matching Criteria:

• Configuration: 4-high LED assembly
• Color: Red (x 4)
• Wavelength: 635nm peak
• Mounting Type: Through Hole, Right Angle
• Viewing Angle: 60°
• Regulatory Compliance: ROHS3 Compliant, REACH Unaffected

Secondary Compatibility Factors:

• Voltage Rating: 2.0V nominal (tolerance range acceptable)
• Current Rating: 30mA nominal (lower current ratings acceptable with circuit design adjustment)
• Millicandela Rating: 40mcd (luminous intensity may vary within application requirements)
• Lens Configuration: Diffused red lens preferred for consistency

The substitute part 5680101111F from Dialight meets the primary matching criteria across configuration, color, wavelength, mounting type, and viewing angle. Variations in voltage (2.1V vs. 2.0V), current (10mA vs. 30mA), and millicandela rating (10mcd vs. 40mcd) represent design trade-offs that require circuit-level evaluation but do not preclude functional substitution in applications where these parameter differences are accommodated.

Parameter Comparison

Engineering Selection Recommendations

Substitution Feasibility:

The 5680101111F qualifies as a functional substitute for the SSF-LXH475ID based on matching configuration, color, wavelength, mounting type, viewing angle, and regulatory compliance status. Both components are ROHS3 compliant with MSL 1 rating and REACH unaffected status, ensuring equivalent environmental and regulatory standing.

Design Considerations:

The substitute part introduces three parameter variations that require circuit-level evaluation:

1. Voltage Differential (2.1V vs. 2.0V): The 5% increase in forward voltage requires verification that the driving circuit can accommodate this shift without exceeding maximum voltage ratings or reducing brightness below acceptable thresholds.

2. Current Reduction (10mA vs. 30mA): The substitute operates at one-third the current of the original part. Existing current-limiting resistor values must be recalculated to ensure proper LED operation and prevent over-driving or under-driving the substitute component.

3. Luminous Intensity Reduction (10mcd vs. 40mcd): The substitute delivers 75% lower brightness. Applications requiring the original 40mcd output specification cannot use this substitute without accepting reduced visual indication capability.

Product Status Advantage:

The 5680101111F is classified as active production status, ensuring long-term availability and supply chain stability compared to the obsolete SSF-LXH475ID.

Frequently Asked Questions (FAQ)

Q: Can the 5680101111F directly replace the SSF-LXH475ID without circuit modifications?

A: No. While the substitute shares the same configuration, color, wavelength, mounting type, and viewing angle, the differences in voltage rating (2.1V vs. 2.0V) and current rating (10mA vs. 30mA) require circuit recalculation. The current-limiting resistor value must be adjusted to accommodate the lower operating current of the substitute part.

Q: What is the impact of the 30mcd brightness difference between these parts?

A: The SSF-LXH475ID delivers 40mcd while the 5680101111F delivers 10mcd. This 75% reduction in luminous intensity may affect visibility in high-ambient-light environments. Applications where the original brightness specification is critical cannot use this substitute without accepting reduced visual indication performance.

Q: Are both parts compliant with the same regulatory standards?

A: Yes. Both the SSF-LXH475ID and 5680101111F are ROHS3 compliant, REACH unaffected, and carry MSL 1 (unlimited) moisture sensitivity ratings. They meet identical environmental and regulatory requirements.

Q: What is the significance of the different lens styles (Diffused vs. Round with Domed Top)?

A: The SSF-LXH475ID uses a diffused red lens while the 5680101111F uses a round lens with domed top. These different geometries produce different optical characteristics, including light distribution patterns and viewing angle performance. While both maintain a 60° viewing angle specification, the actual light distribution may differ in practice.

Q: Is the 5680101111F available in sufficient quantity for production use?

A: Yes. The 5680101111F is listed as active production status with 1701 pieces in current inventory, ensuring availability for ongoing procurement and production requirements.

Q: What mounting compatibility exists between these parts?

A: Both parts use through-hole, right-angle mounting configuration, ensuring mechanical compatibility with existing PCB layouts and mounting hardware designed for the SSF-LXH475ID.