C566C-BFE-CT0U0451 Equivalent & Substitute Parts

Part Overview

The C566C-BFE-CT0U0451 is a blue diffused 5mm oval through-hole LED from CreeLED, Inc., designed for indication applications with a dominant wavelength of 470nm. This part operates at 3.4V forward voltage with a test current of 20mA and delivers 1615mcd luminous intensity. The product is currently obsolete, making identification of compatible substitute parts essential for ongoing system support and component procurement.

Substiute Parts

C566C-BFE-CT0U0451

CreeLED, Inc.In Stock: 677C566C-BFE-CT0U0451 Datasheet

Current PartRFQ

C566D-BFE-CU14Q4S1

CreeLED, Inc.In Stock: 1106C566D-BFE-CU14Q4S1 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the C566C-BFE-CT0U0451 is determined by the following critical parameters:

• Color and Wavelength: Blue 470nm dominant wavelength is mandatory for optical compatibility
• Voltage and Current Ratings: Forward voltage of 3.4V and test current of 20mA must be maintained for circuit compatibility
• Physical Form Factor: 5mm oval lens with domed top and radial through-hole mounting ensures mechanical and electrical interface compatibility
• Lens Transparency: Diffused lens type must be preserved for optical performance
• Dimensions: Maximum height of 7.80mm and lens size of 5.20mm x 4.60mm ensure PCB layout compatibility
• Compliance: RoHS compliance status must be maintained

The substitute part C566D-BFE-CU14Q4S1 meets all these criteria while offering improved luminous intensity (2042mcd versus 1615mcd) and active product status.

Parameter Comparison

Engineering Selection Recommendations

The C566D-BFE-CU14Q4S1 is the direct substitute for the obsolete C566C-BFE-CT0U0451. Both parts maintain identical electrical specifications (3.4V forward voltage, 20mA test current) and physical form factors (5mm oval through-hole, 7.80mm maximum height). The substitute part is currently in active production status with 1093 units in stock, ensuring supply chain continuity.

The C566D-BFE-CU14Q4S1 provides enhanced luminous intensity (2042mcd versus 1615mcd), which represents a performance improvement without requiring circuit modifications. Both parts maintain full RoHS compliance and REACH unaffected status, satisfying regulatory requirements for new designs and legacy system support.

Frequently Asked Questions (FAQ)

Q: Can C566D-BFE-CU14Q4S1 be used as a direct replacement for C566C-BFE-CT0U0451?

A: Yes. Both parts share identical forward voltage (3.4V), test current (20mA), wavelength (470nm), physical dimensions (5.20mm x 4.60mm lens, 7.80mm maximum height), and through-hole radial mounting configuration. The substitute part is electrically and mechanically compatible without circuit modifications.

Q: What is the difference in brightness between these parts?

A: The C566D-BFE-CU14Q4S1 delivers 2042mcd compared to 1615mcd for the C566C-BFE-CT0U0451. This 26.4% increase in luminous intensity occurs at identical operating conditions and does not affect circuit compatibility.

Q: Are there any compliance differences between the two parts?

A: No. Both parts maintain RoHS compliance, REACH unaffected status, and MSL 1 (Unlimited) moisture sensitivity rating. Regulatory and environmental compliance requirements are identical.

Q: Why is the original part obsolete?

A: The C566C-BFE-CT0U0451 has been discontinued by CreeLED, Inc. The C566D-BFE-CU14Q4S1 represents the active production equivalent with improved specifications and ongoing supply availability.

Q: Are the viewing angles identical?

A: The viewing angles differ slightly. The C566C-BFE-CT0U0451 specifies 70° and 35°, while the C566D-BFE-CU14Q4S1 specifies 70° x 30°. Both configurations are suitable for standard indication applications with comparable optical coverage patterns.