Dialight 5501205 LED Circuit Board Indicator - Equivalent & Substitute Parts

Part Overview

The Dialight 5501205 is a 5mm yellow LED circuit board indicator designed for through-hole, right-angle mounting applications. This component features a diffused, tinted lens with a domed top and operates at 1.9V with a 2mA current rating, delivering 1.8mcd at a 50° viewing angle. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.

Substiute Parts

5501205

DialightIn Stock: 10465501205 Datasheet

Current PartRFQ

5501205F

DialightIn Stock: 22275501205F Datasheet

DirectRFQ

HLMP-4719-A00B2

Broadcom LimitedIn Stock: 9528HLMP-4719-A00B2 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the Dialight 5501205 are identified based on strict electrical and mechanical compatibility criteria. The following parameters define acceptable substitution:

Critical Parameters for Substitution:

• Color: Yellow
• Configuration: Single LED
• Current Rating: 2mA
• Mounting Type: Through Hole, Right Angle
• Lens Type: Diffused, Tinted
• Viewing Angle: 50°
• Voltage Rating: Within acceptable operating range (1.8V–1.9V)
• Millicandela Rating: Comparable brightness (1.8–2.1mcd)
• Wavelength - Peak: Yellow spectrum (565–583nm)

Grouping Logic:

Direct Substitute (5501205F): Identical electrical specifications and mounting configuration. Differs only in packaging (Bulk vs. standard) and product status (Active vs. Obsolete). Maintains all critical parameters including 1.9V voltage rating, 2mA current, 1.8mcd brightness, and 583nm peak wavelength.

Similar Substitute (HLMP-4719-A00B2): Functionally equivalent with minor parameter variations within acceptable engineering tolerances. Voltage rating is 1.8V (0.1V lower), peak wavelength is 565nm (18nm lower in the yellow spectrum), and millicandela rating is 2.1mcd (0.3mcd higher). All other critical parameters—current rating, mounting type, lens type, and viewing angle—remain identical.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (5501205F): The Dialight 5501205F is the primary substitute for the obsolete 5501205. Both parts share identical electrical specifications, mechanical configuration, and optical characteristics. The 5501205F is currently in active production status with ROHS3 compliance certification, making it the preferred choice for new designs and production continuity. Inventory availability (2172 pcs) supports immediate implementation.

For Cross-Manufacturer Substitution (HLMP-4719-A00B2): The Broadcom Limited HLMP-4719-A00B2 provides a functionally equivalent alternative when Dialight parts are unavailable. This part maintains compatibility across all critical mounting and optical parameters. The 0.1V lower voltage rating (1.8V vs. 1.9V) and 18nm wavelength shift (565nm vs. 583nm) remain within acceptable yellow LED spectrum tolerances. The slightly higher brightness rating (2.1mcd vs. 1.8mcd) may be advantageous in visibility-critical applications. ROHS3 compliance and unlimited MSL rating ensure regulatory alignment. High inventory availability (9501 pcs) supports supply chain flexibility.

Frequently Asked Questions (FAQ)

Q: Can the 5501205F be used as a direct drop-in replacement for the 5501205?

A: Yes. The 5501205F maintains identical electrical specifications (1.9V, 2mA), optical characteristics (1.8mcd, 50° viewing angle, 583nm wavelength), and mechanical configuration (through-hole, right-angle mounting, 5mm diffused tinted lens). The only differences are packaging format and active production status.

Q: What are the key differences between the Dialight 5501205F and the Broadcom HLMP-4719-A00B2?

A: Both parts share the same current rating (2mA), viewing angle (50°), lens type (diffused, tinted), and mounting configuration (through-hole, right-angle). The HLMP-4719-A00B2 operates at 1.8V (0.1V lower), has a peak wavelength of 565nm (18nm lower in the yellow spectrum), and delivers 2.1mcd brightness (0.3mcd higher). These variations remain within acceptable tolerances for yellow LED circuit board indicators.

Q: Is the voltage difference between 1.9V and 1.8V significant for circuit design?

A: The 0.1V difference is minor and typically accommodated by standard LED current-limiting resistor calculations. Both parts operate within the yellow LED forward voltage range and are compatible with standard 5V logic circuits using appropriate series resistors.

Q: Are both substitute parts RoHS and REACH compliant?

A: Yes. Both the Dialight 5501205F and Broadcom HLMP-4719-A00B2 are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component procurement.

Q: Which substitute should be selected for new designs?

A: The Dialight 5501205F is recommended as the primary choice due to identical specifications to the original part. The Broadcom HLMP-4719-A00B2 serves as a secondary option when Dialight availability is constrained, with full functional equivalence across all critical parameters.

Q: Does the higher brightness of the HLMP-4719-A00B2 (2.1mcd vs. 1.8mcd) affect circuit compatibility?

A: No. The brightness difference results from optical design variations and does not affect electrical circuit compatibility. Both parts operate at the same 2mA current rating and are suitable for identical circuit applications.