AP3216SYC Yellow LED 1206 SMD Equivalent & Substitute Parts

Part Overview

The AP3216SYC is an active-status yellow LED indicator manufactured by Kingbright, designed for surface mount applications in the 1206 (3216 Metric) package format. This component operates at 2V forward voltage with a 20mA test current and delivers 150mcd luminous intensity at a 588nm dominant wavelength. The part is ROHS3 compliant and maintains MSL 3 moisture sensitivity rating.

Substitute parts are necessary when primary inventory is unavailable, when alternative manufacturers are required for supply chain diversification, or when design specifications permit operation within the parametric tolerance ranges of equivalent components.

Substiute Parts

AP3216SYC

KingbrightIn Stock: 702AP3216SYC Datasheet

Current PartRFQ

AP3216SYCK

KingbrightIn Stock: 1902AP3216SYCK Datasheet

Parametric EquivalentRFQ

XZMYK55W-1

SunLEDIn Stock: 2784XZMYK55W-1 Datasheet

DirectRFQ

LTST-C150KFKT

Lite-On Inc.In Stock: 125406LTST-C150KFKT Datasheet

SimilarRFQ

LTST-C150KSKT

Lite-On Inc.In Stock: 140115LTST-C150KSKT Datasheet

SimilarRFQ

LTST-C230KFKT

Lite-On Inc.In Stock: 2786LTST-C230KFKT Datasheet

SimilarRFQ

LTST-C230KSKT

Lite-On Inc.In Stock: 4226LTST-C230KSKT Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict alignment of the following critical parameters:

Color: Yellow (588–591nm dominant wavelength range) Package / Case: 1206 (3216 Metric) only Mounting Type: Surface Mount Voltage - Forward (Vf): 2V nominal (2.0–2.1V acceptable) Current - Test: 20mA Compliance: ROHS3 Compliant, REACH Unaffected

Parts are grouped into three categories:

Parametric Equivalent: Identical electrical and mechanical specifications; direct pin-for-pin replacement.

Direct Manufacturer Equivalent: Different manufacturer; specifications within allowed tolerance; same functional performance.

Similar Parts: Same package and mounting; color or wavelength variation; acceptable only when design permits wavelength or brightness deviation.

Parameter Comparison

Engineering Selection Recommendations

Tier 1 - Direct Replacement (No Design Modification Required)

AP3216SYCK (Kingbright): Parametric equivalent with identical electrical characteristics, brightness, and viewing angle. Higher inventory availability (1800 Pcs). Recommended for immediate substitution without circuit redesign.

XZMYK55W-1 (SunLED): Direct functional equivalent with 148mcd brightness (within 1.3% of 150mcd specification) and identical 2V forward voltage. Reduced height (0.75mm vs. 1.10mm) permits use in space-constrained applications. Highest inventory (2699 Pcs). ROHS3 and MSL 3 compliant.

Tier 2 - Conditional Substitution (Design Verification Required)

LTST-C150KSKT (Lite-On Inc.): Yellow LED with acceptable wavelength (591nm) and forward voltage (2.1V). Brightness reduced to 70mcd (53% of original). Wider viewing angle (130° vs. 120°). Suitable only when brightness reduction is acceptable. Highest inventory (140060 Pcs).

LTST-C230KSKT (Lite-On Inc.): Yellow LED with acceptable wavelength (587nm) and forward voltage (2.0V). Brightness reduced to 60mcd (40% of original). MSL 2A rating (stricter moisture handling). Suitable only when brightness reduction is acceptable and moisture control procedures are available.

Tier 3 - Color Variant (Design Change Required)

LTST-C150KFKT and LTST-C230KFKT (Lite-On Inc.): Orange LEDs (605nm dominant wavelength). Electrical parameters compatible (2.0V Vf, 20mA test current). Use only when design permits color change from yellow to orange. Not recommended for direct substitution without visual specification review.

All recommended parts maintain ROHS3 compliance and REACH unaffected status.

Frequently Asked Questions (FAQ)

Q: Can AP3216SYCK replace AP3216SYC directly without circuit modification?

A: Yes. AP3216SYCK is a parametric equivalent with identical forward voltage (2V), test current (20mA), brightness (150mcd), and viewing angle (120°). The wavelength shift from 588nm to 590nm is within the yellow LED specification range and imperceptible to human vision. Direct substitution is permitted.

Q: What is the key difference between XZMYK55W-1 and AP3216SYC?

A: XZMYK55W-1 is manufactured by SunLED instead of Kingbright and has a reduced height (0.75mm vs. 1.10mm). Electrical performance is equivalent: 2V forward voltage, 148mcd brightness (1.3% variance), and 120° viewing angle. The lower profile enables use in applications with height constraints. All other parameters are compatible.

Q: Why is LTST-C150KSKT listed as a substitute if brightness is only 70mcd?

A: LTST-C150KSKT meets the core substitution criteria: yellow color, 1206 package, 2.1V forward voltage (within tolerance), and 20mA test current. However, the 53% brightness reduction makes it suitable only for applications where indicator visibility is not brightness-critical. Design verification is required before use.

Q: Can I use LTST-C150KFKT (orange) instead of AP3216SYC (yellow)?

A: LTST-C150KFKT is electrically compatible (2V Vf, 20mA test current, 1206 package) but is orange (605nm) rather than yellow (588nm). Substitution is permitted only if the design specification allows color change. Visual appearance will differ significantly. Confirm with design documentation before implementation.

Q: What does MSL 2A vs. MSL 3 mean for storage and handling?

A: MSL 2A requires moisture protection for 4 weeks after packaging; MSL 3 allows 168 hours (7 days). Parts with MSL 2A (LTST-C230KSKT, LTST-C230KFKT) require stricter environmental controls during storage and must be used sooner after opening. MSL 3 parts (AP3216SYC, AP3216SYCK, XZMYK55W-1, LTST-C150KSKT, LTST-C150KFKT) permit longer shelf life under standard conditions.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed parts maintain ROHS3 compliance and REACH unaffected status, meeting current environmental and regulatory requirements for electronic component manufacturing and distribution.

Q: Which substitute has the highest inventory availability?

A: LTST-C150KFKT (Lite-On Inc., orange LED) has the highest inventory at 125,300 Pcs. However, this part is orange rather than yellow and should be selected only when color substitution is acceptable. For yellow LED substitutes, LTST-C150KSKT offers the highest availability at 140,060 Pcs.