LED Lamp Replacement 5851115 - Equivalent & Substitute Parts

Part Overview

The Dialight 5851115 is an LED-based red midget flange lamp designed as a replacement for incandescent indicator lights operating at 28V. This component features a T-1 3/4 form factor with a 630nm wavelength and 38mcd brightness rating. The part is classified as obsolete, making identification of compatible substitutes essential for system maintenance and component sourcing. Equivalent parts must maintain identical electrical characteristics, mechanical form factor, and base type to ensure direct replacement capability.

Substiute Parts

5851115

DialightIn Stock: 8335851115 Datasheet

Current PartRFQ

VC1510145UR3

Visual Communications Company - VCCIn Stock: 1476VC1510145UR3 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution compatibility for the 5851115 is determined by the following critical parameters:

• Voltage Rating: 28V forward voltage requirement
• Wavelength: 630nm red spectrum
• Form Factor: T-1 3/4 physical dimensions
• Base Type: Midget flange mechanical interface
• Configuration: Single LED element
• Color: Red indicator specification

The Visual Communications Company VC1510145UR3 meets all mandatory substitution criteria. Both parts share identical voltage, wavelength, form factor, base type, and configuration specifications. The substitute part maintains full mechanical and electrical compatibility for direct replacement applications.

Parameter Comparison

Engineering Selection Recommendations

The VC1510145UR3 from Visual Communications Company is the qualified substitute for the obsolete 5851115. Selection of this substitute is supported by:

• Product Status: The substitute is active and currently manufactured, ensuring long-term availability compared to the obsolete original part.
• Compliance: The VC1510145UR3 achieves ROHS3 compliance, whereas the original part is RoHS non-compliant. This compliance status may be required for new system designs or regulatory adherence.
• Electrical Compatibility: Both parts operate at identical 28V forward voltage with matching 630nm wavelength specification.
• Mechanical Compatibility: Identical T-1 3/4 form factor and midget flange base type ensure direct socket compatibility.
• Brightness Differential: The substitute provides 330mcd versus the original 38mcd. This increased brightness rating does not prevent substitution but represents a performance enhancement in indicator visibility.

Frequently Asked Questions (FAQ)

Q: Can the VC1510145UR3 be used as a direct replacement for the 5851115?

A: Yes. Both parts share identical voltage (28V), wavelength (630nm), form factor (T-1 3/4), base type (midget flange), and configuration (single). Direct mechanical and electrical compatibility is confirmed.

Q: What is the significance of the millicandela rating difference?

A: The VC1510145UR3 provides 330mcd compared to the original 38mcd. This represents increased brightness output. The substitute will produce a brighter indicator signal while maintaining all other electrical and mechanical specifications.

Q: Does the RoHS compliance difference affect substitution?

A: The VC1510145UR3 is ROHS3 compliant while the original is RoHS non-compliant. For applications requiring RoHS compliance, the substitute meets this regulatory requirement. For legacy systems with no compliance mandate, both parts are functionally equivalent.

Q: Are there packaging considerations for the VC1510145UR3?

A: The substitute is supplied in bulk packaging. Verify that bulk packaging meets your procurement and handling requirements compared to the original part's packaging specification.

Q: Why is the original 5851115 classified as obsolete?

A: Obsolete status indicates the part is no longer manufactured by Dialight. The VC1510145UR3 remains in active production, making it the appropriate long-term sourcing solution for this application.