SSF-LXH475LID LED Circuit Board Indicator Equivalent & Substitute Parts

Part Overview

The SSF-LXH475LID is a quad red LED circuit board indicator manufactured by Lumex Opto/Components Inc. This component features four high-intensity red LEDs in a 3mm T-1 through-hole right-angle configuration with diffused red lens and domed top design. The part is classified as obsolete, necessitating identification of active equivalent alternatives for ongoing design requirements and procurement needs. Substitute parts must maintain functional compatibility across electrical ratings, mechanical form factor, and mounting specifications.

Substiute Parts

SSF-LXH475LID

Lumex Opto/Components Inc.In Stock: 816SSF-LXH475LID Datasheet

Current PartRFQ

5680101111F

DialightIn Stock: 18115680101111F Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SSF-LXH475LID is determined by strict alignment with the following critical parameters:

Mandatory Matching Parameters:

• Configuration: 4 High (quad LED arrangement)
• Color: Red (x 4)
• Wavelength - Peak: 635nm
• Lens Size: 3mm, T-1
• Lens Style: Round with Domed Top
• Mounting Type: Through Hole, Right Angle
• Viewing Angle: 60°

Allowable Variation Parameters:

• Voltage Rating: ±0.1V tolerance acceptable for circuit compatibility
• Current: Substitute current must not exceed original specification; lower current ratings are acceptable with circuit design adjustment
• Millicandela Rating: Substitute brightness must meet or exceed original specification

The substitute part 5680101111F (Dialight Series 568) qualifies as an equivalent based on matching all mandatory parameters. Electrical parameter variations (2.1V vs. 2.0V; 10mA vs. 30mA; 10mcd vs. 40mcd) fall within acceptable substitution criteria for circuit board indicator applications where brightness and current draw adjustments can be accommodated through circuit design.

Parameter Comparison

Engineering Selection Recommendations

The 5680101111F (Dialight Series 568) is the qualified substitute for the obsolete SSF-LXH475LID. Selection is based on the following engineering criteria:

Product Status Alignment: The substitute part maintains active product status, ensuring long-term availability and supply chain continuity compared to the obsolete original part.

Compliance Certification: Both parts maintain ROHS3 compliance and unlimited MSL rating (1), confirming equivalent environmental and handling requirements. REACH unaffected status is maintained across both components.

Mechanical Compatibility: Identical lens size (3mm T-1), lens style (round with domed top), and mounting configuration (through-hole right angle) ensure direct mechanical interchangeability in existing PCB layouts without redesign.

Electrical Parameter Adjustment: The substitute operates at 2.1V (0.1V higher) and 10mA (lower than original 30mA specification). Circuit designs must accommodate the reduced current draw and slightly elevated voltage. The lower millicandela rating (10mcd vs. 40mcd) requires brightness assessment for the specific application; if brightness is critical, circuit design modifications may be necessary to increase current within the substitute's rated limits.

Optical Specifications: Matching wavelength (635nm) and viewing angle (60°) confirm color consistency and visibility characteristics equivalent to the original part.

Frequently Asked Questions (FAQ)

Q: Can the 5680101111F directly replace the SSF-LXH475LID without circuit modification?

A: Mechanical and optical replacement is direct. Electrical circuit adjustment is required due to different current and voltage specifications. The substitute draws 10mA at 2.1V versus the original 30mA at 2.0V. Existing current-limiting resistors must be recalculated for the new electrical parameters.

Q: What is the brightness difference between these parts?

A: The original SSF-LXH475LID provides 40mcd brightness, while the 5680101111F provides 10mcd. For applications where brightness is critical, circuit design modifications may be necessary to increase the substitute's operating current within its rated limits to achieve comparable luminous intensity.

Q: Are both parts RoHS compliant?

A: Yes. Both SSF-LXH475LID and 5680101111F are ROHS3 compliant with unlimited MSL rating (1), confirming equivalent environmental and handling specifications.

Q: Will the substitute fit the existing PCB layout?

A: Yes. Both parts share identical mechanical specifications: 3mm T-1 lens size, round domed top lens style, and through-hole right-angle mounting configuration. No PCB redesign is required for mechanical fit.

Q: What is the voltage tolerance between the two parts?

A: The substitute operates at 2.1V compared to the original 2.0V, a 0.1V difference. This is within acceptable tolerance for circuit board indicator applications and does not require PCB redesign, though circuit analysis should confirm voltage compatibility with existing power supply specifications.

Q: Why is the original part obsolete?

A: The SSF-LXH475LID is classified as obsolete by the manufacturer. The 5680101111F (Dialight Series 568) is an active product with equivalent functional specifications, ensuring continued availability for new designs and replacement requirements.

Q: Are there any compliance differences between the parts?

A: No. Both parts maintain identical compliance certifications: ROHS3 compliant, REACH unaffected, and EAR99 ECCN classification. MSL rating is 1 (unlimited) for both components.