Dialight 5511203F LED Circuit Board Indicator - Equivalent & Substitute Parts

Part Overview

The Dialight 5511203F is an LED Circuit Board Indicator (CBI) designed for low-current applications requiring visual status indication. This single yellow LED features a 3mm T-1 through-hole right-angle configuration with diffused, tinted lens for uniform light distribution. The component operates at 1.8V with 2mA current consumption, making it suitable for battery-powered and low-power circuit designs. The part is currently active in production with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts may be required due to inventory availability, supply chain optimization, or design revision requirements while maintaining identical electrical and mechanical specifications.

Substiute Parts

5511203F

DialightIn Stock: 8575511203F Datasheet

Current PartRFQ

5511207F

DialightIn Stock: 15575511207F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The Dialight 5511207F qualifies as a direct substitute for the 5511203F based on identical electrical and mechanical parameters. Substitution eligibility is determined by the following critical parameters:

• Electrical Specifications: Voltage rating (1.8V), current consumption (2mA), and millicandela output (1.6mcd) must match exactly
• Optical Characteristics: Color (yellow), wavelength peak (585nm), and viewing angle (60°) must be identical
• Physical Configuration: Lens type (diffused, tinted), lens style (round with domed top), lens size (3mm T-1), and mounting type (through hole, right angle) must be unchanged
• Compliance & Certifications: RoHS3 compliance and MSL 1 rating must be maintained

Both parts belong to the Dialight 551 series and share identical specifications across all provided parameters, establishing full interchangeability.

Parameter Comparison

Engineering Selection Recommendations

Both the 5511203F and 5511207F are active production parts manufactured by Dialight with full RoHS3 compliance and unlimited moisture sensitivity rating. Selection between these parts should be based on inventory availability and supply chain requirements rather than technical performance differences, as all electrical, optical, and mechanical specifications are identical.

The 5511207F currently maintains higher inventory levels (1529 pcs) compared to the 5511203F (805 pcs), making it a viable alternative for procurement planning and production scheduling. Both parts meet identical compliance requirements under ROHS3, REACH Unaffected status, and EAR99 export classification.

Frequently Asked Questions (FAQ)

Q: Are the 5511203F and 5511207F electrically interchangeable?

A: Yes. Both parts operate at identical voltage (1.8V) and current (2mA) ratings with matching millicandela output (1.6mcd), ensuring direct electrical compatibility in circuit designs.

Q: Do these parts have identical optical characteristics?

A: Yes. Both parts feature yellow color at 585nm peak wavelength with 60° viewing angle, diffused tinted lens type, and round domed top lens style. Optical performance is identical.

Q: Can I substitute the 5511207F for the 5511203F in existing PCB designs?

A: Yes. The 5511207F maintains identical physical dimensions (3mm T-1 through-hole right-angle mounting), allowing direct PCB footprint compatibility without design modification.

Q: Are both parts RoHS compliant?

A: Yes. Both the 5511203F and 5511207F are ROHS3 compliant with MSL 1 (unlimited) moisture sensitivity rating, meeting identical environmental and regulatory requirements.

Q: What is the primary reason to consider substitution?

A: Substitution is driven by inventory availability and supply chain optimization. The 5511207F offers higher stock levels while maintaining complete technical and compliance equivalence to the 5511203F.