FN15735_RONDA-W-B Equivalent & Substitute Parts

Part Overview

The FN15735_RONDA-W-B is a lens with integrated mount manufactured by Ledil, designed for single LED applications. This component features a clear acrylic construction with asymmetrical optical characteristics and a 40° to 59° viewing angle range. The part utilizes a twist lock mounting mechanism and is classified as obsolete, necessitating identification of active equivalent components for ongoing design and procurement requirements.

Substiute Parts

FN15735_RONDA-W-B

LedilIn Stock: 1127FN15735_RONDA-W-B Datasheet

Current PartRFQ

F15443_RONDA-W

LedilIn Stock: 962F15443_RONDA-W Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the FN15735_RONDA-W-B is determined by the following critical parameters:

Mechanical Compatibility:

• Lens diameter: 69.9mm (fixed requirement)
• Material: Acrylic (optical and thermal properties)
• Manufacturer: Ledil (series compatibility within Rhonda/Ronda family)

Optical Compatibility:

• Color: Clear (light transmission characteristics)
• Viewing angle range: 40° to 59° (defines light distribution)
• Optical pattern: Asymmetrical (beam shaping characteristics)

Regulatory & Environmental:

• RoHS3 Compliance (mandatory for new designs)
• REACH Unaffected status (material safety)

The substitute part F15443_RONDA-W shares the same lens diameter (69.9mm), material (acrylic), color (clear), and manufacturer (Ledil), with compatible viewing angle (45° falls within the 40° to 59° range) and acrylic construction. However, the mounting type differs (socket versus twist lock) and the optical pattern is classified as medium rather than asymmetrical.

Parameter Comparison

Engineering Selection Recommendations

For Direct Substitution:

The F15443_RONDA-W is classified as the manufacturer-recommended substitute for the FN15735_RONDA-W-B. Both components maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory continuity. The substitute part is currently in active production status with 923 units in stock, providing supply chain stability compared to the obsolete main part.

Critical Design Considerations:

The transition from twist lock to socket mounting requires mechanical redesign of the mounting interface. The optical pattern change from asymmetrical to medium affects light distribution characteristics. The viewing angle of 45° in the substitute falls within the 40° to 59° range of the original part, providing optical compatibility within specified parameters.

Compliance Status:

Both components satisfy ROHS3 and REACH requirements, supporting continued use in regulated applications without additional material certification.

Frequently Asked Questions (FAQ)

Q: Can F15443_RONDA-W directly replace FN15735_RONDA-W-B without mechanical modification?

A: No. The mounting type differs (socket versus twist lock), requiring modification of the mounting interface in the host assembly. The optical pattern also differs (medium versus asymmetrical), which may affect light distribution in the application.

Q: Are the viewing angles compatible between these parts?

A: The F15443_RONDA-W provides a fixed 45° viewing angle, which falls within the 40° to 59° range of the FN15735_RONDA-W-B. However, the original part offers a range while the substitute provides a single specification, which may impact optical performance depending on application requirements.

Q: What is the difference between asymmetrical and medium optical patterns?

A: Asymmetrical patterns direct light in non-uniform distributions, while medium patterns provide more uniform light distribution. The specific optical characteristics of each pattern are determined by the lens geometry and are not interchangeable without performance evaluation.

Q: Are both parts compliant with current regulations?

A: Yes. Both FN15735_RONDA-W-B and F15443_RONDA-W are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component use.

Q: What is the packaging difference?

A: The main part FN15735_RONDA-W-B is supplied in standard packaging, while the substitute F15443_RONDA-W is supplied in trays, which may affect handling and storage procedures.

Q: Is the 69.9mm lens diameter identical between both parts?

A: Yes. Both components feature 69.9mm diameter lenses, ensuring mechanical fit compatibility in the optical housing.