Equivalent & Substitute Parts for Dialight 6551405104F

Part Overview

The Dialight 6551405104F is an LED panel indicator designed for 120V AC applications. This component functions as a visual status indicator with blue LED illumination, rated at 5mA current consumption and 25mcd brightness output. The indicator features a 0.50" (12.70mm) round panel cutout with solder lug termination for direct circuit board integration.

This part carries Last Time Buy status, indicating discontinued production. Identifying equivalent substitute parts is essential for ongoing maintenance, repair, and new design implementations where this component specification remains functionally required.

Substiute Parts

6551405104F

DialightIn Stock: 13456551405104F Datasheet

Current PartRFQ

655-1405-104F

DialightIn Stock: 1061655-1405-104F Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Dialight 6551405104F is determined by strict parameter matching across the following critical specifications:

Electrical Parameters: Voltage rating (120V AC), current consumption (5mA), and lamp color (Blue) must be identical. These parameters ensure direct functional equivalence in the target circuit without modification.

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 status must be maintained to satisfy regulatory requirements for the application environment.

The substitute part 655-1405-104F meets all specified parameters and qualifies as a parametric equivalent within the Dialight 655 series.

Parameter Comparison

Engineering Selection Recommendations

The substitute part 655-1405-104F is a parametric equivalent to the main part 6551405104F. Both components share identical electrical, mechanical, and compliance specifications within the Dialight 655 series.

Given the Last Time Buy status of both parts, component selection should prioritize inventory availability. The main part 6551405104F currently maintains 1273 pieces in stock, while the substitute part 655-1405-104F maintains 1035 pieces in stock. Both parts carry ROHS3 compliance certification, satisfying regulatory requirements for applications subject to environmental compliance standards.

Selection between these equivalent parts should be based on procurement lead time, inventory allocation, and supply chain logistics rather than technical performance differences, as no technical differentiation exists between the two part numbers.

Frequently Asked Questions (FAQ)

Q: Are 6551405104F and 655-1405-104F interchangeable?

A: Yes. Both parts are parametric equivalents with identical electrical ratings (120V AC, 5mA), mechanical specifications (0.50" round panel cutout, solder lug termination), and compliance certifications (ROHS3). Direct substitution is supported without circuit modification.

Q: What determines substitution eligibility for this LED panel indicator?

A: Substitution eligibility requires matching across five parameter categories: voltage rating, current rating, lamp color, panel cutout dimensions and shape, and termination style. All five categories must match exactly. Compliance status (RoHS certification) must also be maintained.

Q: Why do these parts have different part number formats?

A: The part numbers 6551405104F and 655-1405-104F represent different formatting conventions for the same component within the Dialight 655 series. The hyphenated format (655-1405-104F) is the standard industry designation, while the non-hyphenated format (6551405104F) is an alternative representation. Both formats reference the identical component specification.

Q: Can this LED indicator be used in DC applications?

A: No. This component is rated for AC applications only (120V AC). The electrical rating specification does not include DC voltage compatibility.

Q: What is the significance of the Last Time Buy status?

A: Last Time Buy status indicates that the manufacturer has discontinued production of this component. Both the main part and substitute part carry this status. Existing inventory represents the final available supply. Future procurement should identify alternative components from current production lines if long-term availability is required.

Q: Are there any differences in moisture sensitivity between the main part and substitute?

A: The main part 6551405104F specifies Moisture Sensitivity Level 1 (Unlimited). The substitute part 655-1405-104F lists MSL as Not Applicable. This difference does not affect substitution eligibility, as both designations indicate no moisture-related handling restrictions during storage or assembly.