C503C-RCS-CYCZAAA1 Equivalent & Substitute Parts

Part Overview

The C503C-RCS-CYCZAAA1 is a red LED indication component manufactured by CreeLED, Inc., designed for through-hole mounting applications. This 5mm round LED with domed lens operates at 2.1V forward voltage and delivers 8650mcd luminous intensity at 20mA test current. The component is actively produced and RoHS compliant, making it suitable for new designs requiring high-brightness red indication in standard PCB layouts.

Substitute parts become necessary when the primary component experiences supply constraints, extended lead times, or when design requirements permit operation within alternative electrical and mechanical parameters. The SLA-570LT3F represents a viable alternative for applications where lower brightness and different forward voltage characteristics are acceptable.

Substiute Parts

C503C-RCS-CYCZAAA1

CreeLED, Inc.In Stock: 994C503C-RCS-CYCZAAA1 Datasheet

Current PartRFQ

SLA-570LT3F

Rohm SemiconductorIn Stock: 962SLA-570LT3F Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the C503C-RCS-CYCZAAA1 is determined by the following parameters:

• Color: Red (required match)
• Mounting Type: Through Hole (required match)
• Lens Size: 5mm form factor (required match)
• Package / Case: Radial configuration (required match)
• Voltage - Forward (Vf): Acceptable range within circuit design tolerance
• Millicandela Rating: Acceptable range based on application brightness requirements
• Viewing Angle: Acceptable range based on application field-of-view requirements
• Wavelength - Dominant: Acceptable range within red spectrum (620-630nm typical)

The SLA-570LT3F qualifies as a substitute based on matching color, mounting type, lens size, and package configuration. However, this substitute exhibits lower forward voltage (1.75V vs 2.1V), significantly reduced brightness (220mcd vs 8650mcd), narrower viewing angle (25° vs 30°), and different dominant wavelength characteristics (peak 660nm vs dominant 624nm).

Parameter Comparison

Engineering Selection Recommendations

Primary Component (C503C-RCS-CYCZAAA1): Recommended for new designs. Active product status ensures long-term availability and supply chain stability. RoHS compliance and REACH unaffected status satisfy regulatory requirements for commercial and industrial applications.

Substitute Component (SLA-570LT3F): Not recommended for new designs due to "Not For New Designs" product status designation. This component may be considered only for legacy system maintenance or repair applications where the reduced brightness (220mcd), lower forward voltage (1.75V), and narrower viewing angle (25°) are compatible with existing circuit design parameters. Circuit redesign may be required to accommodate the 0.35V forward voltage differential. ROHS3 compliance maintains regulatory alignment.

Frequently Asked Questions (FAQ)

Q: Can the SLA-570LT3F directly replace the C503C-RCS-CYCZAAA1 in existing designs?

A: Direct replacement is not recommended without circuit evaluation. The SLA-570LT3F operates at 1.75V forward voltage compared to 2.1V, requiring current-limiting resistor recalculation. The 220mcd brightness is significantly lower than the 8650mcd of the primary component, which may affect visibility in the intended application.

Q: Are both components compatible with the same PCB footprint?

A: Both components use 5mm through-hole radial packages with round domed lenses. However, the C503C-RCS-CYCZAAA1 has a maximum height of 12.60mm while the SLA-570LT3F measures 8.95mm maximum height. Mechanical clearance verification is required for height-constrained applications.

Q: What is the wavelength difference between these components?

A: The C503C-RCS-CYCZAAA1 specifies a dominant wavelength of 624nm. The SLA-570LT3F specifies a peak wavelength of 660nm. Both operate within the red spectrum; however, the different wavelength characteristics may produce visually distinct color appearance.

Q: Why is the SLA-570LT3F marked "Not For New Designs"?

A: This designation indicates the component is in end-of-life or mature phase. Rohm Semiconductor recommends the C503C-RCS-CYCZAAA1 or other active alternatives for new product development to ensure long-term component availability and supply continuity.

Q: Are both components RoHS compliant?

A: Yes. The C503C-RCS-CYCZAAA1 is RoHS Compliant. The SLA-570LT3F is ROHS3 Compliant. Both meet current RoHS requirements and are REACH unaffected.