YPY3863X Yellow-Green LED Equivalent & Substitute Parts

Part Overview

The YPY3863X is a yellow-green 572nm LED indication component manufactured by Stanley Electric Co, designed for through-hole mounting applications. This part is classified as obsolete, necessitating identification of equivalent substitute components for ongoing production requirements or design updates. The YPY3863X delivers 360mcd luminous intensity at 2.1V forward voltage with a 40° viewing angle in a 3.10mm diameter radial package.

Substiute Parts

YPY3863X

Stanley Electric CoIn Stock: 948YPY3863X Datasheet

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INL-3AYG30

InoluxIn Stock: 3395INL-3AYG30 Datasheet

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SLI-343YC3F

Rohm SemiconductorIn Stock: 1646SLI-343YC3F Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the YPY3863X are identified based on the following critical parameters that determine functional equivalence:

Primary Substitution Criteria:

• Mounting Type: Through Hole (radial configuration)
• Lens Style: Round with Domed Top
• Current - Test: 20mA
• Moisture Sensitivity Level: 1 (Unlimited)
• RoHS Compliance Status

Secondary Compatibility Parameters:

• Wavelength range (dominant wavelength between 572nm-587nm acceptable for yellow-green to yellow indication applications)
• Forward voltage within ±0.2V of 2.1V nominal
• Millicandela rating within ±100mcd of 360mcd
• Viewing angle within ±10° of 40°
• Lens diameter 3.0mm to 3.10mm
• Height maximum between 5.08mm to 6.40mm

The substitute parts listed maintain compatibility with standard through-hole PCB mounting footprints and circuit design parameters for LED indication circuits.

Parameter Comparison

Engineering Selection Recommendations

INL-3AYG30 (Inolux): This substitute maintains active product status and ROHS3 compliance. The dominant wavelength of 573nm aligns closely with the YPY3863X at 572nm, preserving yellow-green color characteristics. Forward voltage of 2.0V is within acceptable tolerance of the original 2.1V specification. The 270mcd rating represents a 25% reduction in luminous intensity compared to the original 360mcd. The 30° viewing angle is narrower than the original 40°. Physical dimensions are compatible with standard through-hole mounting, though maximum height is reduced to 5.08mm. This substitute is suitable for applications where reduced brightness and narrower viewing angle are acceptable.

SLI-343YC3F (Rohm Semiconductor): This substitute carries a "Not For New Designs" product status classification. The dominant wavelength of 587nm shifts the color specification from yellow-green toward pure yellow, representing a 15nm shift from the original 572nm specification. Forward voltage of 1.9V is 0.2V lower than the original 2.1V, requiring circuit verification for current-limiting resistor calculations. The 350mcd rating closely matches the original 360mcd specification. The 40° viewing angle matches the original specification exactly. Physical dimensions are compatible with standard through-hole mounting at 3.10mm diameter and 5.60mm maximum height. The ROHS3 compliance status is current. This substitute is suitable only for legacy design maintenance where new design qualification is not required.

Frequently Asked Questions (FAQ)

Q: Can the INL-3AYG30 directly replace the YPY3863X without circuit modifications?

A: The INL-3AYG30 operates at 2.0V forward voltage compared to the YPY3863X at 2.1V. This 0.1V difference may require recalculation of current-limiting resistor values in the LED circuit to maintain the 20mA test current specification. Verify resistor values before implementation.

Q: What is the significance of the wavelength difference between YPY3863X (572nm) and SLI-343YC3F (587nm)?

A: The YPY3863X produces yellow-green light at 572nm dominant wavelength. The SLI-343YC3F produces yellow light at 587nm dominant wavelength. This 15nm shift results in a perceptibly different color output. Applications requiring specific yellow-green color indication should not use the SLI-343YC3F as a substitute.

Q: Why does the INL-3AYG30 have a lower millicandela rating (270mcd) than the YPY3863X (360mcd)?

A: The INL-3AYG30 delivers 75% of the luminous intensity of the original part. In applications where brightness is critical for visibility, this reduction may impact performance. Verify that reduced brightness meets application requirements before substitution.

Q: Is the narrower 30° viewing angle of the INL-3AYG30 a limitation?

A: The INL-3AYG30 viewing angle of 30° is narrower than the YPY3863X at 40°. This affects the angular range over which the LED appears at full brightness. Applications requiring wide-angle visibility should evaluate whether the 30° specification is acceptable.

Q: What does "Not For New Designs" mean for the SLI-343YC3F?

A: This product status indicates that Rohm Semiconductor does not recommend this part for new design implementations. It may be used for legacy product maintenance or design updates only. New product designs should utilize the INL-3AYG30 or other active-status alternatives.

Q: Are all three parts RoHS compliant?

A: Yes. The YPY3863X is RoHS Compliant. Both INL-3AYG30 and SLI-343YC3F are ROHS3 Compliant. All parts meet current RoHS requirements for new applications.

Q: Can the YPY3863X be used in new designs given its obsolete status?

A: The YPY3863X is classified as obsolete, indicating discontinued manufacturing and limited availability. New designs should utilize active-status alternatives such as the INL-3AYG30 to ensure long-term supply chain reliability and design sustainability.

Q: How do the physical dimensions affect PCB layout compatibility?

A: All three parts use through-hole radial mounting with compatible footprints. The YPY3863X maximum height is 6.40mm, while INL-3AYG30 is 5.08mm and SLI-343YC3F is 5.60mm. Verify clearance above the PCB for the taller YPY3863X if substituting with shorter alternatives in space-constrained applications.