Equivalent & Substitute Parts for R5YDL

Part Overview

The R5YDL is a yellow diffused through-hole LED manufactured by Bivar Inc., designed for yellow LED indication applications in discrete 2V radial configurations. This component is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design requirements and component procurement.

Substiute Parts

R5YDL

Bivar Inc.In Stock: 1020R5YDL Datasheet

Current PartRFQ

XSUY18D

SunLEDIn Stock: 18460XSUY18D Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the R5YDL is determined by the following critical parameters:

Functional Equivalence Criteria:

• Color: Yellow
• Lens Transparency: Diffused
• Lens Style: Rectangle with Flat Top
• Mounting Type: Through Hole
• Package / Case: Radial
• Wavelength - Peak: 590nm (±tolerance)

Electrical Compatibility Parameters:

• Voltage - Forward (Vf): 2V nominal (1.95V–2.05V acceptable range)
• Current - Test: 2mA–10mA operational range
• Millicandela Rating: 1mcd–4mcd (brightness variation acceptable for indication applications)

Mechanical Compatibility Parameters:

• Height (Max): 7.00mm
• Lens Size: Rectangular format, 4.90mm × 1.90mm to 5.00mm × 2.00mm
• Viewing Angle: 110°–120°

The XSUY18D from SunLED meets all substitution criteria within these defined parameters.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: XSUY18D (SunLED)

The XSUY18D is the qualified substitute for the obsolete R5YDL based on the following factors:

Product Status: The XSUY18D is classified as Active, ensuring continued availability and supply chain stability compared to the obsolete R5YDL.

Compliance and Certifications: The XSUY18D carries RoHS3 compliance and REACH Unaffected status, meeting current regulatory requirements for electronic component procurement.

Electrical Parameters: The forward voltage of 1.95V is within acceptable tolerance of the R5YDL's 2V specification. The higher test current of 10mA and increased brightness rating of 4mcd provide enhanced performance margins for indication applications.

Mechanical Compatibility: Identical height specification (7.00mm) and radial package configuration ensure direct mechanical fit in existing PCB layouts. Minor lens size variance (5.00mm × 2.00mm versus 4.90mm × 1.90mm) is within acceptable tolerance for through-hole mounting.

Optical Characteristics: Matching wavelength-peak specification (590nm) and diffused lens transparency ensure consistent visual appearance and performance in yellow LED indication circuits.

Frequently Asked Questions (FAQ)

Q: Can the XSUY18D directly replace the R5YDL without circuit modification?

A: Yes. The XSUY18D operates at 1.95V forward voltage compared to the R5YDL's 2V specification, a variance of 0.05V that does not require circuit redesign for standard LED indication applications. The radial package and through-hole mounting are identical.

Q: What is the brightness difference between these parts?

A: The XSUY18D has a millicandela rating of 4mcd compared to the R5YDL's 1mcd. This represents a 4× brightness increase. For applications requiring the original brightness level, series resistor values may require adjustment to maintain equivalent current draw.

Q: Are the lens dimensions interchangeable?

A: The lens dimensions differ slightly: R5YDL is 4.90mm × 1.90mm, while XSUY18D is 5.00mm × 2.00mm. Both are rectangular with flat top styling. The variance is within tolerance for standard through-hole PCB layouts and does not affect mechanical fit.

Q: What is the viewing angle difference?

A: The R5YDL has a 120° viewing angle, while the XSUY18D has a 110° viewing angle. This 10° difference is negligible for most indication applications and does not affect functional performance.

Q: Does the XSUY18D meet current regulatory requirements?

A: Yes. The XSUY18D is RoHS3 compliant and REACH Unaffected, meeting current environmental and regulatory standards for electronic component procurement.

Q: What is the packaging difference?

A: The R5YDL is supplied in standard packaging, while the XSUY18D is supplied in bulk packaging. Both are through-hole radial components with identical form factors.