SM0603YC Yellow LED 0603 SMD - Equivalent & Substitute Parts

Part Overview

The SM0603YC is an active yellow LED indicator in 0603 (1608 Metric) surface mount package manufactured by Bivar Inc. This discrete component operates at 2V forward voltage with a 6mcd brightness rating and 585nm dominant wavelength, intended for standard LED indication applications. The need to identify equivalent and substitute parts arises from supply considerations, performance optimization, and design flexibility requirements across manufacturing batches and sourcing strategies.

Substiute Parts

SM0603YC

Bivar Inc.In Stock: 5302SM0603YC Datasheet

Current PartRFQ

APT1608YC

KingbrightIn Stock: 30618APT1608YC Datasheet

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HSMY-C190

Broadcom LimitedIn Stock: 29298HSMY-C190 Datasheet

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XZMYK53W-3

SunLEDIn Stock: 9978XZMYK53W-3 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the SM0603YC is determined by the following critical parameters that must be maintained or exceeded for functional compatibility:

Primary Compatibility Criteria:

• Package / Case: 0603 (1608 Metric) - maintains physical footprint compatibility
• Color: Yellow - preserves visual indication functionality
• Mounting Type: Surface Mount - ensures assembly compatibility
• Voltage - Forward (Vf): 2V nominal ± tolerance - ensures circuit integration without redesign
• Current - Test: 20mA - determines drive circuit requirements
• Wavelength - Dominant: 585nm nominal ± allowable spectral range - ensures color consistency

Secondary Consideration Parameters:

• Lens Transparency: Clear, Diffused variants acceptable for visual indication
• Millicandela Rating: Brightness specification; higher ratings provide enhanced visibility
• RoHS Status: ROHS3 Compliant required for environmental compliance
• Moisture Sensitivity Level (MSL): Determines storage and handling requirements
• Product Status: Active status required for ongoing availability

The substitute parts listed below share the core package, color, mounting type, and nominal voltage specifications. Variations in millicandela rating, lens transparency, and wavelength peak represent alternative products suitable for the SM0603YC application space.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts maintain active product status and ROHS3 compliance, confirming ongoing availability and environmental regulatory conformity for SM0603YC replacement applications.

APT1608YC (Kingbright): Suitable substitute with marginally elevated forward voltage (2.1V vs. 2V) and increased brightness (8mcd vs. 6mcd). MSL 3 rating provides improved moisture tolerance compared to SM0603YC MSL 4. Height reduction of 0.05mm supports space-constrained designs.

HSMY-C190 (Broadcom Limited): Acceptable substitute featuring diffused lens transparency for distributed light emission. Forward voltage elevation to 2.1V and brightness increase to 8mcd represent measurable performance enhancements. MSL 2A rating delivers superior moisture protection with 4-week bake-out window. Diffused lens configuration affects visual appearance and light distribution angle (170° vs. 130°).

XZMYK53W-3 (SunLED): Direct voltage match (2V) with significantly elevated brightness (148mcd vs. 6mcd). Lowest profile height of 0.45mm enables compact form factor applications. MSL 3 rating equivalent to APT1608YC. Higher millicandela rating and narrower viewing angle (120° vs. 130°) present tradeoffs for enhanced intensity in direct-view applications.

Frequently Asked Questions (FAQ)

Q: Can I substitute SM0603YC with any of these parts directly without circuit modification?

A: APT1608YC and XZMYK53W-3 are direct drop-in replacements as they maintain the 2V forward voltage specification of SM0603YC. HSMY-C190 operates at 2.1V forward voltage; circuit validation is required for applications with tight voltage budgets or series-connected LED strings.

Q: What is the difference between clear and diffused lens transparency?

A: SM0603YC, APT1608YC, and XZMYK53W-3 feature clear lenses for focused light output with higher intensity in the viewing angle axis. HSMY-C190 incorporates a diffused white lens that disperses light uniformly across a wider viewing angle (170° vs. 130°–150°), reducing peak intensity but improving omnidirectional visibility.

Q: Which substitute provides the brightest output?

A: XZMYK53W-3 delivers 148mcd brightness compared to 6mcd for SM0603YC. This 24x intensity increase suits applications requiring visible indication from distance or in bright ambient conditions. APT1608YC and HSMY-C190 provide intermediate brightness at 8mcd each.

Q: How do the moisture sensitivity levels affect component handling?

A: SM0603YC requires baking within 72 hours of moisture exposure (MSL 4). APT1608YC and XZMYK53W-3 extend this to 168 hours (MSL 3), and HSMY-C190 provides the longest shelf life at 4 weeks (MSL 2A). Lower MSL values reduce manufacturing logistics constraints and rework risk.

Q: Are all substitute parts available in the same packaging formats?

A: SM0603YC, APT1608YC, and XZMYK53W-3 are supplied in Tape & Reel (TR) packaging. HSMY-C190 is available in Cut Tape (CT) & Digi-Reel® format. Packaging selection depends on assembly equipment compatibility and order quantity requirements.

Q: What wavelength variations occur across these parts?

A: Dominant wavelengths range from 585nm (SM0603YC) to 590nm (XZMYK53W-3), representing a 5nm spectral window within the standard yellow LED range. All parts maintain visual yellow appearance; wavelength differences are not perceptible under normal viewing conditions.