Dialight 5855415 LED Cluster T3 1/4 Yellow 585nm 28V Equivalent & Substitute Parts

Part Overview

The Dialight 5855415 is a yellow LED cluster lamp in T-3 1/4 form factor designed for 28V applications. This component functions as an incandescent replacement for indicator lights and general illumination in bayonet-base fixtures. The part is classified as obsolete, making identification of active equivalent and substitute parts essential for ongoing system maintenance and new design implementations.

Substiute Parts

5855415

DialightIn Stock: 9755855415 Datasheet

Current PartRFQ

5855415F

DialightIn Stock: 12365855415F Datasheet

DirectRFQ

5855425F

DialightIn Stock: 12055855425F Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the Dialight 5855415 is determined by strict equivalence across the following critical parameters:

• Size / Dimension: T-3 1/4
• Wavelength: 585nm (yellow spectrum)
• Voltage - Forward (Vf): 28V
• Base Type: Bayonet
• Color: Yellow
• Millicandela Rating: 490mcd
• Configuration: Single
• Applications: Incandescent Replacements, Indicator Lights

The substitute parts identified below maintain identical electrical and mechanical specifications, ensuring direct functional compatibility in existing bayonet-base fixtures rated for 28V yellow indicator applications.

Parameter Comparison

Engineering Selection Recommendations

The Dialight 5855415 is obsolete and no longer in active production. Both substitute parts—5855415F and 5855425F—are active products from the same manufacturer and series, maintaining identical electrical and mechanical parameters.

For new designs and ongoing maintenance applications, either 5855415F or 5855425F provides direct functional replacement. Both substitutes achieve ROHS3 compliance, addressing regulatory requirements that the original part does not meet. Selection between the two substitutes should be based on availability and procurement lead times, as they are parametrically equivalent.

Frequently Asked Questions (FAQ)

Q: Can 5855415F and 5855425F be used interchangeably with the original 5855415?

A: Yes. Both parts maintain identical specifications across all critical parameters: T-3 1/4 form factor, 585nm wavelength, 28V forward voltage, bayonet base, yellow color, and 490mcd brightness rating. Direct substitution is supported in all 28V bayonet-base indicator light applications.

Q: What is the difference between 5855415F and 5855425F?

A: Both parts are parametrically equivalent with identical electrical and mechanical specifications. The difference in part number reflects internal Dialight product line organization. Selection should be based on inventory availability and procurement considerations.

Q: Why is the original 5855415 marked as obsolete?

A: The original part does not meet current ROHS3 compliance requirements. Active substitutes 5855415F and 5855425F provide equivalent functionality while meeting modern regulatory standards.

Q: Are there packaging differences between these parts?

A: The original 5855415 is listed with unspecified packaging (-). Both substitutes 5855415F and 5855425F are supplied in bulk packaging, which is standard for LED lamp components.

Q: Can these parts be used in applications other than 28V indicator lights?

A: These components are specified for incandescent replacement and indicator light applications in 28V bayonet-base fixtures. Use outside these parameters requires independent electrical and mechanical validation.