Dialight 5500405 LED Circuit Board Indicator - Equivalent & Substitute Parts

Part Overview

The Dialight 5500405 is a 5mm red LED circuit board indicator designed for through-hole, right-angle mounting applications. It features a diffused lens with domed top, rated at 2V and 20mA, with a peak wavelength of 635nm and 12.3mcd brightness. The part is currently obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications requiring compatible red LED indicators with similar electrical and mechanical specifications.

Substiute Parts

5500405

DialightIn Stock: 9695500405 Datasheet

Current PartRFQ

5500405F

DialightIn Stock: 27995500405F Datasheet

DirectRFQ

WP73EK/IDA

KingbrightIn Stock: 1005WP73EK/IDA Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the Dialight 5500405 are classified into two categories based on compatibility with the specified electrical and mechanical parameters:

Direct Manufacturer Substitute (5500405F): This part maintains identical specifications across all critical parameters including voltage rating (2V), current (20mA), wavelength (635nm), brightness (12.3mcd), lens size (5mm, T-1 3/4), lens type (diffused), lens style (round with domed top), mounting type (through hole, right angle), and viewing angle (60°). The primary difference is packaging format (bulk) and active product status, making it a direct functional equivalent.

Similar Manufacturer Substitute (WP73EK/IDA by Kingbright): This part shares the same color (red), lens style (round with domed top), mounting type (through hole, right angle), and viewing angle (60°). However, it operates at different electrical parameters (1.9V voltage, 30mA current), has a different lens size (4.80mm vs. 5mm), different wavelength (617nm vs. 635nm), and different brightness rating (20mcd vs. 12.3mcd). This part functions as a similar indicator but with modified electrical characteristics and physical dimensions.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement: The Dialight 5500405F is the primary substitute for the obsolete 5500405. Both parts maintain identical electrical specifications (2V, 20mA), optical characteristics (635nm wavelength, 12.3mcd brightness), and mechanical form factor (5mm T-1 3/4 lens, through-hole right-angle mounting). The 5500405F carries active product status and ROHS3 compliance, making it suitable for new designs and production continuity. No circuit modifications are required for this substitution.

For Alternative Selection: The Kingbright WP73EK/IDA presents an alternative when the direct substitute is unavailable. This part requires circuit design evaluation due to differences in voltage rating (1.9V vs. 2V), current consumption (30mA vs. 20mA), lens size (4.80mm vs. 5mm), and optical output (20mcd vs. 12.3mcd, 617nm vs. 635nm wavelength). The higher brightness and current consumption may necessitate resistor value adjustments in current-limiting circuits. Physical board layout compatibility must be verified due to the 0.2mm reduction in lens diameter.

Frequently Asked Questions (FAQ)

Q: Can the Dialight 5500405F be used as a direct drop-in replacement for the 5500405?

A: Yes. The 5500405F maintains identical electrical ratings (2V, 20mA), optical specifications (635nm, 12.3mcd), and mechanical dimensions (5mm T-1 3/4 through-hole right-angle). No circuit modifications are required.

Q: What are the key differences between the Dialight 5500405 and the Kingbright WP73EK/IDA?

A: The Kingbright part operates at 1.9V instead of 2V, draws 30mA instead of 20mA, has a smaller lens diameter (4.80mm vs. 5mm), produces higher brightness (20mcd vs. 12.3mcd), and has a different peak wavelength (617nm vs. 635nm). These differences require circuit evaluation before substitution.

Q: Does the Kingbright WP73EK/IDA require circuit modifications?

A: Yes. The lower voltage rating (1.9V vs. 2V) and higher current consumption (30mA vs. 20mA) may require adjustment of current-limiting resistor values. The smaller lens size (4.80mm vs. 5mm) must be verified for mechanical compatibility with the PCB layout and housing.

Q: Are both substitute parts RoHS compliant?

A: The Dialight 5500405F is ROHS3 compliant. The Kingbright WP73EK/IDA is also ROHS3 compliant. Both parts are REACH unaffected with MSL rating of 1 (unlimited).

Q: What is the inventory status of these parts?

A: The obsolete Dialight 5500405 has 955 pieces in stock. The active Dialight 5500405F has 2726 pieces available. The Kingbright WP73EK/IDA has 952 pieces in stock.

Q: Can the Kingbright part be used in existing designs without modification?

A: Physical compatibility requires verification due to the 0.2mm lens diameter difference. Electrical compatibility requires circuit analysis due to voltage and current rating differences. Direct substitution without evaluation is not recommended.