WP813ED LED Orange Diffused 10MM Through Hole Equivalent & Substitute Parts

Part Overview

The WP813ED is a Kingbright orange diffused 10mm through-hole LED designed for discrete indication applications. This component operates at 2V forward voltage with a 20mA test current and delivers 80mcd brightness at a 30° viewing angle. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The WP813ED features a 617nm dominant wavelength with a 627nm peak wavelength, housed in a radial package with a round domed lens.

Substiute Parts

WP813ED

KingbrightIn Stock: 840WP813ED Datasheet

Current PartRFQ

WP813ID

KingbrightIn Stock: 1840WP813ID Datasheet

MFR RecommendedRFQ

LTL-10253W

Lite-On Inc.In Stock: 10244LTL-10253W Datasheet

SimilarRFQ

LTL-307Y08A-D

Lite-On Inc.In Stock: 790LTL-307Y08A-D Datasheet

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LTL-4251NLC

Lite-On Inc.In Stock: 5374LTL-4251NLC Datasheet

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SSL-LX100133AC

Lumex Opto/Components Inc.In Stock: 1155SSL-LX100133AC Datasheet

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SSL-LX4064YD

Lumex Opto/Components Inc.In Stock: 841SSL-LX4064YD Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution logic for the WP813ED is determined by the following critical parameters: mounting type (through hole), lens size (10mm), lens transparency (diffused), forward voltage (2V nominal), test current (20mA), and brightness output (80mcd). The dominant wavelength (617nm) and peak wavelength (627nm) define the orange color specification.

Substitute parts are grouped into two categories:

Direct Equivalent (MFR Recommended): WP813ID maintains identical electrical and mechanical specifications with the exception of color (red instead of orange). This part shares the same base product number (WP813), manufacturer (Kingbright), lens size (10mm), voltage (2V), current (20mA), brightness (80mcd), viewing angle (30°), and physical dimensions (13.50mm height). The only functional difference is the wavelength shift from 617nm to 617nm dominant (red spectrum).

Similar Substitutes: LTL-10253W, LTL-307Y08A-D, LTL-4251NLC, and SSL-LX100133AC are classified as similar substitutes due to deviations in one or more critical parameters. These parts maintain through-hole mounting and diffused lens characteristics but differ in lens size, voltage rating, current requirements, brightness output, or viewing angle. SSL-LX100133AC is amber-colored with clear lens transparency rather than diffused, representing a different optical characteristic.

Parameter Comparison

Engineering Selection Recommendations

WP813ID (Direct Equivalent - MFR Recommended): This Kingbright part is the primary substitute for the obsolete WP813ED. It maintains identical electrical specifications (2V forward voltage, 20mA test current, 80mcd brightness), mechanical dimensions (10mm lens diameter, 13.50mm height), and optical characteristics (30° viewing angle, diffused lens). The only difference is the color shift from orange to red. Both parts are ROHS3 compliant with MSL 1 rating and active product status. This part is suitable for direct replacement in applications where red indication is functionally equivalent to orange.

LTL-10253W (Lite-On Inc.): This yellow LED offers active product status and ROHS3 compliance. However, it features a smaller 4.75mm lens diameter, higher forward voltage (2.1V), reduced test current (10mA), significantly lower brightness (12.6mcd), and wider viewing angle (60°). This part is suitable only for applications where reduced brightness and different color are acceptable.

LTL-307Y08A-D (Lite-On Inc.): This yellow LED maintains 20mA test current and ROHS3 compliance but uses a smaller 5mm lens, higher forward voltage (2.1V), and lower brightness (29mcd). The wider 50° viewing angle differs from the original 30°. This part is suitable for applications tolerating color and brightness changes.

LTL-4251NLC (Lite-On Inc.): This yellow LED operates at significantly reduced specifications: 1.8V forward voltage, 2mA test current, and 1.1mcd brightness. The 3mm lens size and T-1 package represent substantial deviations. REACH status is affected (versus unaffected for WP813ED). This part is suitable only for low-brightness indicator applications.

SSL-LX100133AC (Lumex Opto/Components Inc.): This amber LED maintains the 10mm lens size and 13.50mm height but features clear lens transparency (not diffused), higher forward voltage (2.1V), and narrower viewing angle (20°). Brightness is higher at 110mcd. This part is suitable for applications requiring amber indication with clear lens characteristics.

SSL-LX4064YD (Lumex Opto/Components Inc.): This yellow LED operates at 2.1V forward voltage with 20mA test current and 30mcd brightness. The 4mm lens size and 6mm height represent significant dimensional reductions. This part is suitable for space-constrained applications tolerating color and brightness changes.

Frequently Asked Questions (FAQ)

Q: Can WP813ID be used as a direct replacement for WP813ED?

A: Yes. WP813ID is the MFR recommended equivalent. Both parts share identical electrical specifications (2V forward voltage, 20mA test current, 80mcd brightness), mechanical dimensions (10mm lens, 13.50mm height), and optical characteristics (30° viewing angle, diffused lens). The color difference (red vs. orange) is the only functional change. Both are ROHS3 compliant with active or equivalent product status.

Q: What are the critical parameters that determine substitutability?

A: Substitutability is determined by: mounting type (through hole), lens size (10mm diameter), lens transparency (diffused), forward voltage (2V nominal), test current (20mA), brightness output (80mcd), viewing angle (30°), and physical height (13.50mm maximum). Deviations in any of these parameters indicate a similar rather than direct substitute.

Q: Why do the Lite-On and Lumex parts have different specifications?

A: These manufacturers produce LEDs with different optical and electrical designs. Lite-On parts (LTL series) in this list feature smaller lens sizes (3-5mm) and lower brightness outputs (1.1-29mcd). Lumex parts (SSL series) offer varied lens sizes and transparency options. These differences reflect different product families and design objectives rather than equivalent alternatives.

Q: Can I use a smaller lens size LED as a substitute?

A: Smaller lens sizes (3-5mm vs. 10mm) result in different optical characteristics, including reduced brightness and altered viewing angles. Substitution is possible only if the application tolerates these changes. The 10mm lens size is a critical parameter for applications requiring specific brightness and viewing angle characteristics.

Q: What is the impact of forward voltage differences?

A: Forward voltage differences (1.8V to 2.1V vs. 2V nominal) affect circuit design and current-limiting resistor calculations. Parts with 2.1V forward voltage require slightly higher supply voltage or different resistor values. Parts with 1.8V forward voltage operate at lower voltage but may require circuit redesign. The 2V specification of WP813ED and WP813ID ensures direct electrical compatibility.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All parts listed in this reference are ROHS3 compliant. LTL-4251NLC has affected REACH status, while WP813ED and WP813ID have unaffected REACH status. This difference should be considered for applications with specific regulatory requirements.

Q: What does MSL 1 (Unlimited) mean?

A: Moisture Sensitivity Level 1 indicates the component has unlimited shelf life and requires no special moisture control during storage or handling. All parts in this reference carry MSL 1 rating, eliminating moisture-related procurement or storage concerns.

Q: Can I substitute based on color alone?

A: No. Color is one parameter among many. While WP813ID offers the closest color match (red vs. orange), other parameters must align with application requirements. Brightness (80mcd), viewing angle (30°), and lens size (10mm) are equally critical for proper circuit function and user perception.