Dialight 5912401102F LED Circuit Board Indicator - Equivalent & Substitute Parts

Part Overview

The Dialight 5912401102F is a Surface Mount, Right Angle LED Circuit Board Indicator featuring a single yellow diffused lens with square domed top configuration. Designed for 2V operation at 10mA, this component delivers 12.6mcd brightness with a 50° viewing angle and 586nm peak wavelength. The part is classified as Obsolete, necessitating identification of functionally equivalent alternatives for ongoing production and maintenance applications. Active substitute options maintain core electrical and mechanical compatibility while offering enhanced performance characteristics.

Substiute Parts

5912401102F

DialightIn Stock: 8895912401102F Datasheet

Current PartRFQ

5912401102NF

DialightIn Stock: 11455912401102NF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Dialight 5912401102F is determined by the following critical parameters:

Mandatory Compatibility Parameters:

• Voltage Rating: 2V (exact match required)
• Mounting Type: Surface Mount, Right Angle (exact match required)
• Configuration: Single (exact match required)
• Color: Yellow (exact match required)
• Series: 591 (same product family)

Allowable Variation Parameters:

• Current Rating: May increase from 10mA to 20mA (forward compatible)
• Millicandela Rating: May increase from 12.6mcd to 71mcd (enhanced brightness acceptable)
• Wavelength - Peak: May shift from 586nm to 591nm (within yellow spectrum tolerance)
• Viewing Angle: May decrease from 50° to 40° (narrower beam acceptable for most applications)
• Lens Style: May change from Square with Domed Top to Round with Domed Top (mechanical form factor variation)
• Lens Size: May change from unspecified to 2.85mm Dia (dimensional specification addition)

The substitute part 5912401102NF maintains all mandatory parameters while offering improved electrical performance and active product status.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: Dialight 5912401102NF

The 5912401102NF is the direct equivalent for the obsolete 5912401102F. Selection of this substitute is supported by:

• Product Status Alignment: The substitute is Active, ensuring long-term availability and supply chain continuity for production and field replacement applications.
• Regulatory Compliance: Both parts maintain ROHS3 Compliant and REACH Unaffected certifications, satisfying environmental and regulatory requirements.
• Electrical Compatibility: Identical 2V voltage rating and Surface Mount, Right Angle mounting configuration ensure direct circuit board integration without redesign.
• Performance Enhancement: The substitute delivers 71mcd versus 12.6mcd, providing superior brightness for improved visibility in indicator applications.
• Mechanical Considerations: Lens style change from square to round and specification of 2.85mm diameter represent form factor variations that may require mechanical clearance verification in confined mounting spaces.

For applications where the original 50° viewing angle is critical, the substitute's 40° narrower beam angle should be evaluated against specific visibility requirements. The increased current rating of 20mA versus 10mA allows operation at reduced forward voltage or with higher series resistance for power optimization.

Frequently Asked Questions (FAQ)

Q: Can the 5912401102NF directly replace the 5912401102F without circuit modification?

A: Yes, electrical substitution is direct. Both parts operate at 2V with Surface Mount, Right Angle configuration. However, the mechanical form factor change from square to round lens and the narrower 40° viewing angle versus 50° require verification that the new lens geometry fits the mounting aperture and that the reduced viewing angle meets application visibility requirements.

Q: What is the impact of the increased current rating (20mA vs. 10mA)?

A: The substitute's 20mA rating provides design flexibility. Existing circuits designed for 10mA operation will function correctly at reduced brightness. Alternatively, series resistance can be decreased to achieve higher brightness output while maintaining the same power supply voltage.

Q: Why does the wavelength differ between the two parts (586nm vs. 591nm)?

A: Both wavelengths fall within the yellow spectrum range for human perception. The 591nm wavelength of the substitute represents a slight shift toward the green-yellow boundary but remains visually yellow. This difference is imperceptible in typical indicator applications.

Q: Are there mechanical compatibility concerns with the lens style change?

A: The original part features a square lens with domed top; the substitute features a round lens with domed top at 2.85mm diameter. Physical clearance in the mounting area must be verified. Round lenses typically require less mounting space than square lenses of equivalent optical area.

Q: Does the narrower viewing angle (40° vs. 50°) affect functionality?

A: The substitute's 40° viewing angle is narrower, concentrating light output in a tighter beam. For applications requiring wide-angle visibility, this may be a limitation. For direct-view indicator applications with fixed observer positions, the narrower angle is typically acceptable and may provide improved brightness perception.

Q: Are both parts RoHS and REACH compliant?

A: Yes, both the 5912401102F and 5912401102NF are ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory standards for electronic components.