Dialight 5500207 LED Circuit Board Indicator - Equivalent & Substitute Parts

Part Overview

The Dialight 5500207 is a 5mm green LED circuit board indicator designed for through-hole, right-angle mounting applications. This component features a diffused lens with domed top, operating at 2.1V with 20mA current consumption and 12.3mcd brightness output. The part is classified as obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications. Active alternatives from other manufacturers provide compatible electrical and mechanical characteristics suitable for direct replacement in circuit board designs.

Substiute Parts

5500207

DialightIn Stock: 10915500207 Datasheet

Current PartRFQ

5500207F

DialightIn Stock: 52905500207F Datasheet

DirectRFQ

H178CGD

Bivar Inc.In Stock: 5341H178CGD Datasheet

SimilarRFQ

SSF-LXH100GD

Lumex Opto/Components Inc.In Stock: 34173SSF-LXH100GD Datasheet

SimilarRFQ

WP1503CB/GD

KingbrightIn Stock: 3260WP1503CB/GD Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Dialight 5500207 is determined by the following critical parameters:

Primary Compatibility Criteria:

• Color: Green
• Wavelength - Peak: 565nm (±3nm tolerance acceptable)
• Configuration: Single
• Current Rating: 20mA
• Voltage Rating: 2.1V to 2.2V (0.1V tolerance acceptable)
• Lens Type: Diffused
• Lens Style: Round with Domed Top
• Lens Size: 5mm, T-1 3/4
• Mounting Type: Through Hole, Right Angle

Secondary Considerations:

• Millicandela Rating: 12.3mcd minimum (higher values acceptable for brightness-critical applications)
• Viewing Angle: 60° (45° acceptable for narrower beam applications)
• Product Status: Active preferred for ongoing availability
• RoHS Compliance: ROHS3 Compliant

The substitute parts listed below meet these criteria and are classified as either direct equivalents or functionally similar alternatives suitable for circuit board indicator applications.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent - Dialight 5500207F: The 5500207F is the primary substitute for the obsolete 5500207. As a Dialight product with identical electrical specifications (2.1V, 20mA, 12.3mcd), this part provides direct functional equivalence. Active product status ensures ongoing availability. ROHS3 compliance supports modern manufacturing requirements. This part is suitable for direct replacement without circuit modifications.

Functionally Similar Alternatives:

Bivar Inc. H178CGD: Meets core electrical parameters (2.1V, 20mA) with compatible mechanical form factor (5mm, T-1 3/4, round domed top). Wavelength deviation (568nm vs. 565nm) is within acceptable tolerance for green LED applications. Increased brightness (25mcd) provides enhanced visibility. Viewing angle reduction to 45° may affect peripheral visibility in wide-angle applications. Mounting type specified as through-hole without explicit right-angle confirmation requires mechanical verification.

Lumex Opto/Components Inc. SSF-LXH100GD: Meets electrical specifications with 0.1V voltage increase (2.2V vs. 2.1V), acceptable within standard LED operating tolerances. Wavelength matches at 565nm. Tinted diffused lens and increased brightness (30mcd) provide enhanced optical characteristics. Right-angle mounting confirmed. Suitable for applications where increased brightness is beneficial.

Kingbright WP1503CB/GD: Meets electrical specifications with 0.1V voltage increase (2.2V vs. 2.1V). Wavelength matches at 565nm. Highest brightness output (50mcd) among alternatives. Tinted diffused lens provides color enhancement. Right-angle mounting confirmed. Suitable for applications requiring maximum brightness output within the 5mm green LED category.

All substitute parts carry ROHS3 compliance and MSL-1 rating, supporting compliance requirements equivalent to the original part.

Frequently Asked Questions (FAQ)

Q: Can the Dialight 5500207F directly replace the obsolete 5500207? A: Yes. The 5500207F is a direct equivalent with identical electrical specifications (2.1V, 20mA, 12.3mcd) and mounting configuration. No circuit modifications are required.

Q: What is the significance of the wavelength difference between 565nm and 568nm? A: The 3nm difference between the Bivar H178CGD (568nm) and the original 5500207 (565nm) falls within standard green LED wavelength tolerance. Both produce visually identical green light suitable for circuit board indicator applications.

Q: Why do some substitute parts have higher millicandela ratings? A: The SSF-LXH100GD (30mcd) and WP1503CB/GD (50mcd) provide increased brightness compared to the original 12.3mcd specification. Higher brightness is acceptable for direct replacement and beneficial in applications where enhanced visibility is required. Circuit current limiting resistors may require adjustment if the original design was optimized for the lower brightness of the 5500207.

Q: What is the difference between diffused and diffused, tinted lenses? A: Both lens types scatter light to provide wide viewing angles. Tinted diffused lenses (SSF-LXH100GD, WP1503CB/GD) incorporate color enhancement for more saturated green appearance. Standard diffused lenses (5500207, 5500207F, H178CGD) provide neutral green output. Both are functionally equivalent for circuit board indicator applications.

Q: Is the 0.1V voltage difference between 2.1V and 2.2V significant? A: No. The 0.1V difference between the original 2.1V specification and substitute parts rated at 2.2V falls within standard LED operating tolerance. Circuit designs using current-limiting resistors accommodate this variation without performance degradation.

Q: Does the H178CGD mounting type difference affect compatibility? A: The H178CGD is specified as through-hole without explicit right-angle confirmation, while the original 5500207 specifies through-hole, right-angle. Mechanical verification of the H178CGD mounting orientation is required before selection for applications where right-angle orientation is critical to PCB layout.

Q: Are all substitute parts RoHS compliant? A: Yes. All substitute parts listed (5500207F, H178CGD, SSF-LXH100GD, WP1503CB/GD) are ROHS3 compliant, meeting modern manufacturing and environmental standards.

Q: What packaging options are available? A: The 5500207F is supplied in bulk packaging. The H178CGD is supplied in tray packaging. The SSF-LXH100GD and WP1503CB/GD are supplied in bulk packaging. Packaging selection depends on production volume and handling requirements.