Equivalent & Substitute Parts for Dialight 6551105104F

Part Overview

The Dialight 6551105104F is an LED panel indicator designed for AC applications at 120V with 5mA current consumption. This component features a red lamp color, round flat-top lens style, and 0.50" (12.70mm) round panel cutout dimensions. The part utilizes solder lug termination for direct circuit board integration. The 6551105104F is classified as Last Time Buy, indicating discontinued production status. Identifying equivalent substitute parts ensures continued availability for maintenance, repair, and new design applications where this specification remains functionally required.

Substiute Parts

6551105104F

DialightIn Stock: 10356551105104F Datasheet

Current PartRFQ

655-1105-104F

DialightIn Stock: 1173655-1105-104F Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Dialight 6551105104F is determined by strict parametric matching across electrical and mechanical specifications. The following parameters establish the substitution criteria:

Electrical Parameters: Voltage rating (120V AC), current consumption (5mA), and lamp color (Red) must be identical. These parameters ensure the substitute part operates within the same electrical environment and provides equivalent visual indication.

Mechanical Parameters: Panel cutout shape (Round), panel cutout dimensions (0.50"/12.70mm), lens style (Round with Flat Top), and termination style (Solder Lug) must match exactly. These parameters ensure physical compatibility with existing panel mounting and circuit board integration.

Compliance Parameters: RoHS3 compliance and ECCN classification (EAR99) establish regulatory and export control equivalence.

Optical Parameters: Millicandela rating (60mcd) ensures equivalent luminous intensity for visual indication purposes.

Parts meeting all these criteria are classified as parametric equivalents and direct substitutes.

Parameter Comparison

Engineering Selection Recommendations

The substitute part 655-1105-104F is a direct parametric equivalent to the main part 6551105104F. Both parts are manufactured by Dialight within the 655 series and share identical electrical, mechanical, and optical specifications.

Product Status Consideration: Both the main part and substitute are classified as Last Time Buy. This status indicates discontinued production. Selection between these two part numbers should be based on current inventory availability and procurement lead times.

Compliance Alignment: Both parts maintain ROHS3 compliance and EAR99 export classification, ensuring regulatory equivalence for applications requiring environmental and trade compliance.

Interchangeability: The 655-1105-104F serves as a complete functional and physical substitute for the 6551105104F in all applications where the 120V AC, 5mA red LED panel indicator specification is required. No design modifications or circuit adjustments are necessary when substituting between these part numbers.

Frequently Asked Questions (FAQ)

Q: Are the part numbers 6551105104F and 655-1105-104F interchangeable?

A: Yes. These part numbers represent the same component from Dialight with identical electrical, mechanical, and optical specifications. The difference in part number formatting reflects internal Dialight numbering conventions but does not indicate functional differences.

Q: What determines whether a substitute part is acceptable for the 6551105104F?

A: Substitution eligibility requires matching across five parameter categories: (1) Electrical specifications—120V AC voltage and 5mA current; (2) Mechanical specifications—0.50" round panel cutout, round flat-top lens, and solder lug termination; (3) Optical specifications—60mcd luminous intensity; (4) Color specification—red lamp color; and (5) Compliance specifications—ROHS3 compliance and EAR99 classification.

Q: Can I use a substitute part with different voltage or current ratings?

A: No. The voltage rating (120V AC) and current consumption (5mA) are critical electrical parameters. Substitutes with different ratings will not operate correctly in circuits designed for the 6551105104F specification and may cause circuit malfunction or component damage.

Q: What is the significance of the panel cutout dimensions?

A: The 0.50" (12.70mm) round panel cutout dimension is a mechanical specification that determines physical compatibility with panel mounting hardware. Substitutes must have identical cutout dimensions to fit existing panel openings without modification.

Q: Does the Last Time Buy status affect the substitution decision?

A: The Last Time Buy status indicates discontinued production for both the main part and the identified substitute. This status does not affect substitution eligibility but emphasizes the importance of securing adequate inventory from available stock before parts become unavailable.

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

A: Both parts are supplied in Bag packaging. Packaging format does not affect functional or electrical equivalence.