WP169XYD Yellow LED Diffused Rectangular Through-Hole Equivalent & Substitute Parts

Part Overview

The WP169XYD is an active yellow LED indication component manufactured by Kingbright, designed for through-hole mounting applications. This discrete 2.1V radial LED operates at 588nm dominant wavelength with 10mcd brightness rating and features a rectangular diffused lens with domed top. The component is ROHS3 compliant and maintains unlimited moisture sensitivity rating (MSL 1). Alternative equivalent parts may be required due to inventory constraints, application-specific performance requirements, or supply chain considerations.

Substiute Parts

WP169XYD

KingbrightIn Stock: 821WP169XYD Datasheet

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R3YD

Bivar Inc.In Stock: 1228R3YD Datasheet

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SLR-322DU3F

Rohm SemiconductorIn Stock: 2156SLR-322DU3F Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the WP169XYD are evaluated based on the following critical parameters that determine functional equivalence:

Primary Compatibility Criteria:

• Color: Yellow wavelength range (588nm-590nm dominant/peak)
• Lens Transparency: Diffused optical characteristic
• Mounting Type: Through Hole radial configuration
• Voltage - Forward (Vf): Operating range 2.0V to 2.1V
• Current - Test: 20mA standard test current
• Package / Case: Radial through-hole package
• RoHS Status: ROHS3 Compliant

Secondary Consideration Parameters:

• Millicandela Rating: Brightness level for indication applications
• Viewing Angle: Light distribution angle
• Lens Style: Physical lens geometry
• Height (Max): PCB clearance requirements

The substitute parts listed maintain compatibility within the yellow LED indication category with through-hole radial mounting. Variations in brightness (mcd), viewing angle, and lens geometry represent acceptable trade-offs for equivalent functional performance in standard indication circuits.

Parameter Comparison

Engineering Selection Recommendations

WP169XYD (Primary Component): All three components maintain active product status and ROHS3 compliance. The WP169XYD remains the specified component with 10mcd brightness and 2.1V forward voltage.

R3YD (Bivar Inc.) - Yellow LED Substitute: The R3YD provides yellow wavelength equivalence at 590nm peak with 2.0V forward voltage and 20mA test current. This part maintains color and lens transparency compatibility. The 4mcd brightness rating is lower than the primary component. The 100° viewing angle provides wider light distribution compared to the 60° specification of WP169XYD. Height is 4.00mm, providing reduced PCB clearance requirement. This substitute is suitable for applications where lower brightness is acceptable and wider viewing angle is beneficial.

SLR-322DU3F (Rohm Semiconductor) - Orange LED Substitute: The SLR-322DU3F operates at 605nm wavelength in the orange spectrum, representing a color shift from the yellow specification. Forward voltage is 2.0V with 10mA test current, requiring lower operating current than the primary component. Brightness rating is 6.3mcd. Viewing angle is 50°, narrower than the primary component. This part is listed as a substitute but introduces color variation and reduced test current specification. Selection of this part requires confirmation that orange wavelength is acceptable for the application.

Frequently Asked Questions (FAQ)

Q: Can R3YD directly replace WP169XYD in all applications?

A: The R3YD maintains yellow color, diffused lens, through-hole radial mounting, and 2.0V forward voltage compatibility. The primary differences are lower brightness (4mcd vs 10mcd) and wider viewing angle (100° vs 60°). Direct replacement is possible in applications where reduced brightness is acceptable and wider light distribution does not create optical interference.

Q: What are the implications of using SLR-322DU3F as a substitute?

A: The SLR-322DU3F introduces a color shift from yellow (588nm) to orange (605nm). Additionally, the test current is 10mA rather than 20mA. This part should only be selected when orange wavelength is functionally equivalent to yellow in the application, and when the lower test current specification aligns with circuit design requirements.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. Both R3YD and SLR-322DU3F maintain ROHS3 compliance status, matching the primary WP169XYD component specification.

Q: How do viewing angle differences affect circuit performance?

A: The R3YD provides 100° viewing angle compared to WP169XYD's 60° specification, resulting in wider light distribution. The SLR-322DU3F provides 50° viewing angle, resulting in narrower light distribution. Viewing angle selection depends on the physical layout and visibility requirements of the application. Wider angles provide visibility from more positions; narrower angles concentrate light intensity in a specific direction.

Q: What is the significance of the 4.00mm height on R3YD?

A: The R3YD height of 4.00mm is 1.00mm lower than WP169XYD (5.00mm) and 1.40mm lower than SLR-322DU3F (5.40mm). This reduced height may be advantageous in space-constrained PCB designs or applications with height limitations.

Q: Are there differences in moisture sensitivity between these parts?

A: All three components maintain MSL 1 (Unlimited) moisture sensitivity rating, indicating no special moisture handling requirements during storage or assembly.

Q: What inventory availability should be considered?

A: WP169XYD has 806 units in stock, R3YD has 1210 units, and SLR-322DU3F has 2055 units. Inventory levels may influence substitute selection in high-volume procurement scenarios.