Dialight 5552009 LED Circuit Board Indicator - Equivalent & Substitute Parts

Part Overview

The Dialight 5552009 is a single red LED circuit board indicator designed for 5V applications with 1mA current consumption. This component features a 2.00mm diameter round domed lens, clear optical properties, and right-angle through-hole mounting for PCB integration. The part is classified as obsolete, making identification of suitable substitutes essential for ongoing production and maintenance applications. The primary substitute maintains functional compatibility while offering improved availability and updated compliance status.

Substiute Parts

5552009

DialightIn Stock: 7335552009 Datasheet

Current PartRFQ

5552009F

DialightIn Stock: 17035552009F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution compatibility for the Dialight 5552009 is determined by the following critical parameters:

• Voltage Rating: Both parts operate at 5V, ensuring direct circuit compatibility
• Color & Wavelength: Red 650nm specification maintained across all substitutes
• Lens Configuration: Identical 2.00mm diameter round domed clear lens
• Mounting Type: Through-hole right-angle mounting preserved for PCB integration
• Viewing Angle: 40° viewing angle maintained for consistent optical performance
• Configuration: Single LED configuration consistent across all parts

The substitute part 5552009F shares all critical mechanical and optical parameters with the main part. Current rating differences (1mA vs. 10mA) and millicandela variations reflect design iterations within the same product family and do not prevent functional substitution in circuit applications where the higher current rating is accommodated by the design.

Parameter Comparison

Engineering Selection Recommendations

The Dialight 5552009F serves as the active production substitute for the obsolete 5552009. Selection between these parts should be based on the following criteria:

Use 5552009F when:

• New designs or production runs require active component availability
• RoHS3 compliance is mandated by application or regulatory requirements
• Circuit design accommodates 10mA current consumption
• Long-term supply chain continuity is required

Use 5552009 when:

• Existing inventory stock is available and sufficient for application needs
• Legacy system maintenance requires exact part matching
• RoHS non-compliance is acceptable within application constraints

Both parts maintain identical mechanical form factor, optical properties, and 5V voltage rating, ensuring PCB-level compatibility without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can the 5552009F directly replace the 5552009 in existing circuits?

A: Yes, from a mechanical and optical standpoint. The 5552009F maintains identical lens size, mounting configuration, and viewing angle. However, the circuit must accommodate the higher 10mA current rating of the substitute. Verify that current-limiting resistor values are appropriate for the 10mA specification.

Q: What is the significance of the different millicandela ratings?

A: The 5552009 is rated at 9mcd while the 5552009F is rated at 0.6mcd. This difference reflects the brightness output at their respective current ratings. The 5552009F operates at higher current (10mA) but produces lower brightness per unit current. Application brightness requirements must be evaluated independently.

Q: Are there compliance differences between these parts?

A: Yes. The 5552009 is RoHS non-compliant, while the 5552009F is ROHS3 compliant. For applications subject to RoHS directives or customer requirements, the 5552009F is the appropriate selection.

Q: Does the packaging differ between these parts?

A: The 5552009 packaging is unspecified in available data, while the 5552009F is supplied in bulk packaging. Confirm packaging requirements with your procurement specifications.

Q: Are both parts from the same manufacturer?

A: Yes, both are manufactured by Dialight and belong to the 555 series, confirming product family continuity and design compatibility.