Dialight 5500205 LED Circuit Board Indicator - Equivalent & Substitute Parts

Part Overview

The Dialight 5500205 is a single green LED circuit board indicator featuring a 5mm diffused lens with domed top, designed for through-hole right-angle mounting. This component operates at 2.1V with a 20mA current rating and delivers 12.3mcd brightness at a 565nm peak wavelength. The part is classified as obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications. Substitute parts must maintain compatibility across electrical specifications, mechanical form factor, and mounting configuration to ensure direct replacement capability.

Substiute Parts

5500205

DialightIn Stock: 11865500205 Datasheet

Current PartRFQ

5500205F

DialightIn Stock: 53925500205F Datasheet

DirectRFQ

SSF-LXH400GD

Lumex Opto/Components Inc.In Stock: 855SSF-LXH400GD Datasheet

SimilarRFQ

WP73EK/GDA

KingbrightIn Stock: 1141WP73EK/GDA Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Dialight 5500205 is determined by the following critical parameters:

Primary Compatibility Criteria:

• Color: Green (565nm wavelength range)
• Configuration: Single LED element
• Current Rating: 20mA nominal
• Voltage Rating: 2.1V nominal
• Mounting Type: Through Hole, Right Angle
• Lens Size: 5mm form factor
• Viewing Angle: 60° minimum

Substitution Categories:

Direct Substitute (Identical Specifications): Parts that match all primary criteria with active product status and current manufacturing availability.

Functional Equivalent (Minor Parameter Variance): Parts that maintain electrical compatibility within acceptable tolerances while differing in secondary parameters such as lens style detail, millicandela rating, or packaging format. These parts perform the same circuit board indication function but may have slight dimensional or optical variations.

Cross-Manufacturer Alternative (Similar Function, Different Manufacturer): Parts from alternative manufacturers that satisfy the core electrical and mechanical requirements, enabling supply chain flexibility when primary substitutes are unavailable.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: Dialight 5500205F

The 5500205F is the recommended direct replacement for the obsolete 5500205. Both parts share identical electrical specifications (2.1V, 20mA, 12.3mcd, 565nm), configuration (single green LED), and mounting type (through-hole right-angle). The 5500205F maintains active product status with ROHS3 compliance and unlimited moisture sensitivity rating, ensuring long-term supply chain availability and regulatory alignment. This part requires no circuit redesign or board layout modification.

Secondary Equivalent: Lumex Opto/Components Inc. SSF-LXH400GD

The SSF-LXH400GD functions as an electrical equivalent with matching voltage (2.1V), current (20mA), wavelength (565nm), and mounting configuration. This part features a 4-wide LED configuration rather than single, making it suitable for applications requiring multiple indicator channels in a compact footprint. ROHS3 compliance and unlimited MSL rating are maintained. Physical form factor remains compatible with 5mm through-hole right-angle mounting.

Alternative Option: Kingbright WP73EK/GDA

The WP73EK/GDA provides functional equivalence with minor parameter deviations. Operating voltage is 2V (0.1V lower than 5500205), current rating is 25mA (5mA higher), and brightness is 30mcd (2.4x higher than original). Lens diameter is 4.80mm rather than 5mm, requiring verification of board layout clearance. Wavelength remains within green spectrum at 568nm. ROHS3 compliance and unlimited MSL rating apply. This option is suitable when higher brightness is beneficial and board space accommodates the slightly smaller lens diameter.

Frequently Asked Questions (FAQ)

Q: Can the 5500205F be used as a direct drop-in replacement for the obsolete 5500205?

A: Yes. The 5500205F maintains identical electrical specifications (2.1V, 20mA, 12.3mcd), single green LED configuration, and through-hole right-angle mounting. No circuit modifications are required. The primary difference is active product status and ROHS3 compliance, making it the preferred substitute.

Q: What is the key difference between the 5500205 and the SSF-LXH400GD?

A: The SSF-LXH400GD features a 4-wide LED configuration compared to the single LED in the 5500205. Electrical parameters (2.1V, 20mA, 565nm) remain identical. This configuration is suitable for applications requiring multiple indicator channels in a single component. Mounting type and form factor are compatible.

Q: Is the Kingbright WP73EK/GDA a suitable replacement?

A: The WP73EK/GDA provides functional equivalence with acceptable parameter variance. Voltage is 2V (0.1V lower), current is 25mA (5mA higher), and brightness is 30mcd (significantly higher). Lens diameter is 4.80mm instead of 5mm, requiring board layout verification. This option is suitable when higher brightness is acceptable and physical clearance permits the smaller lens diameter.

Q: What compliance certifications apply to the substitute parts?

A: All active substitute parts (5500205F, SSF-LXH400GD, WP73EK/GDA) carry ROHS3 compliance and REACH Unaffected status. Moisture Sensitivity Level is 1 (Unlimited) for all parts, indicating no special handling requirements during storage or assembly.

Q: Are there packaging differences between the main part and substitutes?

A: The 5500205 packaging is listed as dash (unspecified). The 5500205F is supplied in bulk packaging. The SSF-LXH400GD is supplied in tube packaging. The WP73EK/GDA packaging is unspecified. Verify packaging requirements with your procurement process, as this may affect order quantities and handling procedures.

Q: What is the wavelength tolerance for green LED substitution?

A: The main part specifies 565nm peak wavelength. Acceptable substitutes maintain green spectrum wavelengths between 565nm and 568nm. The WP73EK/GDA at 568nm remains within acceptable green spectrum range for visual indication applications.