WP169XID Red Diffused Rectangular LED Equivalent & Substitute Parts

Part Overview

The WP169XID is an active production red diffused rectangular through-hole LED manufactured by Kingbright. This component is specified for red indication applications with a dominant wavelength of 617nm and a forward voltage of 2V at 20mA test current. The part features a rectangular lens with domed top (3.00mm × 2.00mm) and is rated at 14 millicandela. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the allowed parameter tolerances for this LED category.

Substiute Parts

WP169XID

KingbrightIn Stock: 2060WP169XID Datasheet

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WP914IDT

KingbrightIn Stock: 137474WP914IDT Datasheet

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SLR-322VR3F

Rohm SemiconductorIn Stock: 2589SLR-322VR3F Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the WP169XID are qualified based on the following electrical and mechanical parameters:

Primary Compatibility Criteria:

• Color: Red
• Voltage - Forward (Vf): 2V nominal
• Mounting Type: Through Hole
• Package / Case: Radial
• RoHS Status: ROHS3 Compliant
• Wavelength range: 617nm to 630nm (red spectrum)

Allowable Variations:

• Millicandela rating: 4mcd to 14mcd (brightness variation acceptable for indication applications)
• Lens style: Rectangle or Round (both diffused)
• Lens size: 3.00mm to 3.10mm (minor dimensional tolerance)
• Current - Test: 10mA to 20mA (operational current range)
• Viewing Angle: 50° to 100° (application-dependent)
• Height: 4.00mm to 5.40mm (PCB clearance consideration)

The identified substitutes maintain electrical compatibility (2V forward voltage, red color, through-hole radial package) while accommodating minor variations in optical characteristics and physical dimensions.

Parameter Comparison

Engineering Selection Recommendations

WP914IDT (Kingbright): This substitute maintains identical electrical specifications (2V forward voltage, 20mA test current, 617nm dominant wavelength) and mechanical compatibility (through-hole radial package, rectangular lens 3.00mm × 2.00mm). The primary differences are reduced brightness (4mcd versus 14mcd) and wider viewing angle (100° versus 60°). The WP914IDT is suitable for applications where lower brightness is acceptable and wider light distribution is beneficial. Height is reduced to 4.00mm, providing improved PCB clearance. All compliance certifications (ROHS3, REACH Unaffected, EAR99) are equivalent.

SLR-322VR3F (Rohm Semiconductor): This substitute provides electrical compatibility (2V forward voltage, red color, through-hole radial package) with a slightly longer wavelength (630nm versus 617nm). The lens style differs (round domed top versus rectangular domed top) and the test current is reduced to 10mA. Brightness is rated at 10mcd with a narrower viewing angle (50° versus 60°). Height is increased to 5.40mm. All compliance certifications match the main part. This substitute is applicable where the round lens form factor and lower operating current are compatible with circuit design requirements.

Both substitutes maintain active product status and full regulatory compliance. Selection depends on specific application requirements regarding brightness, viewing angle, lens geometry, and PCB layout constraints.

Frequently Asked Questions (FAQ)

Q: Can WP914IDT replace WP169XID in any application?

A: WP914IDT is electrically compatible (identical 2V forward voltage and 20mA test current) and mechanically compatible (through-hole radial package, rectangular lens). However, the reduced brightness (4mcd versus 14mcd) and wider viewing angle (100° versus 60°) must be evaluated against application requirements. If the circuit design depends on the 14mcd brightness specification, WP914IDT is not suitable. If lower brightness is acceptable or beneficial, substitution is valid.

Q: What is the primary difference between WP169XID and SLR-322VR3F?

A: Both parts operate at 2V forward voltage and are through-hole radial packages. The main differences are: (1) lens geometry (rectangular domed top versus round domed top), (2) test current (20mA versus 10mA), (3) dominant wavelength (617nm versus 630nm), and (4) brightness (14mcd versus 10mcd). The round lens of SLR-322VR3F may affect light distribution and visual appearance compared to the rectangular lens of WP169XID.

Q: Are all three parts RoHS compliant?

A: Yes. WP169XID, WP914IDT, and SLR-322VR3F are all ROHS3 Compliant with MSL 1 (Unlimited) moisture sensitivity level and REACH Unaffected status.

Q: Does lens style affect substitution compatibility?

A: Lens style (rectangular versus round) affects light distribution, viewing angle, and visual appearance. WP169XID and WP914IDT both have rectangular lenses (3.00mm × 2.00mm) with different top profiles (domed versus flat). SLR-322VR3F has a round lens (3.10mm diameter). Substitution is valid only if the application can accommodate the different lens geometry and resulting light distribution characteristics.

Q: What is the impact of different test currents (10mA versus 20mA)?

A: Test current specifies the operational condition at which brightness and other optical parameters are measured. WP169XID and WP914IDT are tested at 20mA, while SLR-322VR3F is tested at 10mA. This affects brightness comparison and circuit design. If the application circuit is designed for 20mA operation, SLR-322VR3F will operate at different brightness levels than specified at its 10mA test condition.

Q: Can height differences affect PCB layout?

A: Yes. WP169XID has a maximum height of 5.00mm, WP914IDT is 4.00mm, and SLR-322VR3F is 5.40mm. These differences impact PCB clearance, component stacking, and enclosure fit. Verify that the substitute part height is compatible with the available vertical space in the target application.