WP113HDT Equivalent & Substitute Parts Reference

Part Overview

The Kingbright WP113HDT is a red diffused rectangular LED indicator designed for through-hole mounting applications. This component features a 2.00mm × 5.00mm lens with a 635nm dominant wavelength and 0.6mcd brightness rating at 20mA test current. The WP113HDT is classified as obsolete product status, necessitating identification of active equivalent components for new designs and ongoing production requirements. Substitute parts must maintain mechanical compatibility with the rectangular 2mm × 5mm form factor and through-hole radial mounting configuration while meeting the electrical specifications for red LED indication circuits.

Substiute Parts

WP113HDT

KingbrightIn Stock: 869WP113HDT Datasheet

Current PartRFQ

WP113SURDKT

KingbrightIn Stock: 2681WP113SURDKT Datasheet

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WP113IDT

KingbrightIn Stock: 845WP113IDT Datasheet

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5219499F

DialightIn Stock: 8275219499F Datasheet

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523-2SDRD/S530-A3

Everlight Electronics Co LtdIn Stock: 1164523-2SDRD/S530-A3 Datasheet

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LTL-433HR

Lite-On Inc.In Stock: 948LTL-433HR Datasheet

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LTL-433P

Lite-On Inc.In Stock: 801LTL-433P Datasheet

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SSL-LX2573HD

Lumex Opto/Components Inc.In Stock: 970SSL-LX2573HD Datasheet

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SSL-LX2573ID

Lumex Opto/Components Inc.In Stock: 10104SSL-LX2573ID Datasheet

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SSL-LX2573SID

Lumex Opto/Components Inc.In Stock: 21002SSL-LX2573SID Datasheet

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SSL-LX2573SRD

Lumex Opto/Components Inc.In Stock: 41293SSL-LX2573SRD Datasheet

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XSUR18D

SunLEDIn Stock: 12671XSUR18D Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the WP113HDT are identified based on strict mechanical and electrical compatibility criteria. The primary substitution logic is based on the following allowed parameters:

Mechanical Compatibility Requirements:

• Lens size must be 5.00mm L × 2.00mm W (rectangular form factor)
• Lens style must be rectangle with flat top
• Mounting type must be through-hole radial configuration
• Maximum height must not exceed 7.70mm to ensure PCB clearance compatibility

Electrical Compatibility Requirements:

• Color must be red
• Lens transparency must be diffused
• Forward voltage (Vf) must be within the range of 1.7V to 2.25V for standard circuit compatibility
• Test current must be 10mA or 20mA
• Wavelength dominant must be in the red spectrum (617nm to 660nm range)

Regulatory Compliance Requirements:

• RoHS3 compliance is mandatory
• ECCN classification must be EAR99
• HTSUS code must be 8541.41.0000

All substitute parts listed meet these criteria and are classified as active product status, ensuring availability for production use.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute - Manufacturer Recommended:

WP113SURDKT (Kingbright) is the manufacturer-recommended substitute for the obsolete WP113HDT. This part maintains the same rectangular 2mm × 5mm lens form factor and through-hole radial mounting configuration. The WP113SURDKT operates at 1.95V forward voltage with 20mA test current, providing improved brightness at 150mcd compared to the original 0.6mcd specification. The part is ROHS3 compliant and carries active product status, ensuring long-term availability. Note that the maximum height is 8.25mm, which exceeds the original 7.00mm specification and must be verified for PCB clearance in existing designs.

Direct Mechanical Equivalents - Same Form Factor:

The following parts maintain identical mechanical specifications (5.00mm × 2.00mm lens, 7.00mm maximum height, through-hole radial mounting):

• WP113IDT (Kingbright): Active status, 2.0V forward voltage, 4mcd brightness, 617nm dominant wavelength. Maintains original height specification.
• SSL-LX2573HD (Lumex Opto/Components): Active status, 2.0V forward voltage, 3mcd brightness, 700nm peak wavelength. Maintains original height specification.
• SSL-LX2573ID (Lumex Opto/Components): Active status, 2.0V forward voltage, 10mcd brightness, 635nm peak wavelength. Maintains original height specification.
• SSL-LX2573SID (Lumex Opto/Components): Active status, 2.0V forward voltage, 100mcd brightness, 636nm peak wavelength. Maintains original height specification.
• SSL-LX2573SRD (Lumex Opto/Components): Active status, 1.7V forward voltage, 80mcd brightness, 660nm peak wavelength. Maintains original height specification.

Compatible Alternatives - Slightly Increased Height:

• 5219499F (Dialight): Active status, 20mA test current, 3.7mcd brightness, 7.70mm maximum height. Mechanical fit requires verification for 0.70mm height increase.
• 523-2SDRD/S530-A3 (Everlight Electronics): Active status, 2.0V forward voltage, 16mcd brightness, 7.30mm maximum height. Mechanical fit requires verification for 0.30mm height increase.
• LTL-433HR (Lite-On Inc.): Active status, 2.0V forward voltage, 3.7mcd brightness, 10mA test current, 7.50mm maximum height. Mechanical fit requires verification for 0.50mm height increase.
• LTL-433P (Lite-On Inc.): Active status, 2.1V forward voltage, 1.1mcd brightness, 10mA test current, 7.50mm maximum height, MSL 2A classification. Mechanical fit requires verification for 0.50mm height increase.

All listed substitutes are ROHS3 compliant and carry EAR99 ECCN classification. Selection should prioritize parts with active product status and matching height specifications for direct PCB compatibility.

Frequently Asked Questions (FAQ)

Q: Can WP113SURDKT be used as a direct replacement for WP113HDT in existing PCB designs?

A: WP113SURDKT maintains the same rectangular 2mm × 5mm lens form factor and through-hole radial mounting configuration. However, the maximum height is 8.25mm compared to the original 7.00mm specification. PCB clearance must be verified before substitution. The forward voltage is lower (1.95V vs. 2.25V), which may require circuit adjustment depending on the current-limiting resistor design.

Q: What is the difference between the Lumex SSL-LX2573 series variants?

A: The SSL-LX2573 series includes multiple variants with identical mechanical specifications (5.00mm × 2.00mm lens, 7.00mm height, through-hole radial mounting) but different brightness ratings and wavelength characteristics. SSL-LX2573HD provides 3mcd at 700nm peak wavelength. SSL-LX2573ID provides 10mcd at 635nm peak wavelength. SSL-LX2573SID provides 100mcd at 636nm peak wavelength. SSL-LX2573SRD provides 80mcd at 660nm peak wavelength with the lowest forward voltage (1.7V). Selection depends on required brightness level and wavelength specification for the application.

Q: Are all substitute parts RoHS3 compliant?

A: All substitute parts listed in this reference are ROHS3 compliant. This compliance status is mandatory for new designs and production use. The original WP113HDT is also ROHS3 compliant.

Q: What is the significance of the Moisture Sensitivity Level (MSL) rating?

A: Moisture Sensitivity Level indicates storage and handling requirements. Most substitute parts carry MSL 1 (Unlimited), meaning they can be stored without moisture control indefinitely. LTL-433P carries MSL 2A (4 Weeks), requiring controlled storage conditions and baking before reflow soldering if storage exceeds 4 weeks. WP113SURDKT carries "Not Applicable" MSL, indicating no moisture sensitivity requirement.

Q: Can parts with different test currents (10mA vs. 20mA) be substituted?

A: Parts with different test currents can be substituted if the circuit design accommodates the different operating conditions. LTL-433HR and LTL-433P operate at 10mA test current compared to the original 20mA specification. The forward voltage and brightness ratings are specified at their respective test currents. Circuit verification is required to ensure proper operation at the substitute part's rated current.

Q: What is the impact of forward voltage differences on circuit design?

A: Forward voltage differences affect the current-limiting resistor calculation in LED indicator circuits. The original WP113HDT operates at 2.25V forward voltage. Substitutes range from 1.7V (SSL-LX2573SRD) to 2.25V (WP113HDT). A lower forward voltage requires a higher resistor value to maintain the same LED current, while a higher forward voltage requires a lower resistor value. Circuit recalculation is necessary when substituting parts with significantly different forward voltage specifications.

Q: Which substitute provides the closest electrical match to the original WP113HDT?

A: WP113IDT provides the closest electrical match with 2.0V forward voltage (compared to 2.25V original), 20mA test current, 110° viewing angle, and identical 7.00mm maximum height. The brightness difference (4mcd vs. 0.6mcd) represents an improvement in the substitute part. SSL-LX2573HD also provides a close match with 2.0V forward voltage, 20mA test current, 110° viewing angle, and 7.00mm height, though wavelength data is not fully specified.

Q: Are there inventory considerations for substitute part selection?

A: Inventory levels vary significantly among substitute parts. SSL-LX2573SRD has the highest inventory (41,188 pcs), followed by SSL-LX2573SID (20,972 pcs) and SSL-LX2573ID (10,013 pcs). WP113SURDKT has 2,575 pcs available. Availability should be considered for long-term production requirements and supply chain planning.