AAAF5051-04 RGB LED Equivalent & Substitute Parts

Part Overview

The AAAF5051-04 is a common anode RGB LED in 6-SMD, Gull Wing surface mount package manufactured by Kingbright. This component provides discrete red, green, and blue light emission with a clear, colorless lens and 120° viewing angle. The part is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement continuity. Substitute components must maintain electrical compatibility across all three color channels while preserving mechanical fit and optical characteristics.

Substiute Parts

AAAF5051-04

KingbrightIn Stock: 862AAAF5051-04 Datasheet

Current PartRFQ

AAAF5051-05

KingbrightIn Stock: 1844AAAF5051-05 Datasheet

DirectRFQ

SML-LX5050SIUPGUBC

Lumex Opto/Components Inc.In Stock: 1105SML-LX5050SIUPGUBC Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AAAF5051-04 are qualified based on the following criteria:

Direct Manufacturer Substitutes maintain identical or compatible electrical and mechanical specifications within the same product family. The AAAF5051-05 is a direct Kingbright substitute with active product status, offering improved luminous intensity ratings while maintaining the same package footprint, lens geometry, and common anode configuration.

Parametric Equivalents from alternative manufacturers provide functional compatibility through matching electrical characteristics, optical properties, and physical form factors. The SML-LX5050SIUPGUBC from Lumex Opto/Components Inc. delivers equivalent forward voltage, test current, viewing angle, and package dimensions, enabling direct circuit-level substitution.

Critical compatibility parameters for substitution include:

• Common anode configuration
• Forward voltage compatibility across all three color channels
• 150mA test current rating
• 6-SMD, Gull Wing package with 5.00mm x 5.00mm footprint
• 4.25mm square lens with flat top
• 120° viewing angle
• ROHS3 compliance and MSL 3 rating

Parameter Comparison

Engineering Selection Recommendations

AAAF5051-05 (Direct Manufacturer Substitute): This Kingbright part is the primary substitute for the obsolete AAAF5051-04. It maintains active product status and identical mechanical compatibility with the original design. The AAAF5051-05 features lower forward voltages (2.3V red, 3.3V green/blue versus 2.5V/3.5V) and higher luminous intensity across all color channels, resulting in improved brightness performance. The maximum height increases by 0.10mm to 1.40mm, which remains compatible with standard PCB assembly clearances. ROHS3 compliance and MSL 3 rating are maintained. This substitute is recommended for new designs and production continuity.

SML-LX5050SIUPGUBC (Parametric Equivalent): This Lumex Opto/Components Inc. part provides functional equivalence through matching electrical specifications and identical physical footprint. Forward voltages and test currents are identical to the original AAAF5051-04, with millicandela ratings matching across all three color channels. The maximum height remains 1.30mm, identical to the original. ROHS3 compliance and MSL 3 rating are maintained. This substitute is suitable for applications requiring exact electrical and optical performance matching. The alternative manufacturer source provides supply chain diversification.

Both substitutes are ROHS3 compliant and carry MSL 3 ratings, ensuring compatibility with standard surface mount assembly processes and moisture handling requirements.

Frequently Asked Questions (FAQ)

Q: Can the AAAF5051-05 be used as a direct replacement for the AAAF5051-04 on existing PCBs?

A: Yes. The AAAF5051-05 maintains identical footprint dimensions (5.00mm x 5.00mm), package type (6-SMD, Gull Wing), and common anode configuration. The height increase from 1.30mm to 1.40mm does not affect PCB assembly compatibility. Forward voltage differences (2.3V/3.3V versus 2.5V/3.5V) require circuit resistor recalculation to maintain consistent LED current, but no PCB layout changes are necessary.

Q: What is the difference between the AAAF5051-05 and SML-LX5050SIUPGUBC?

A: Both are functionally compatible substitutes. The AAAF5051-05 is a direct Kingbright family member with improved brightness (higher millicandela ratings) and lower forward voltages. The SML-LX5050SIUPGUBC from Lumex provides identical electrical and optical performance to the original AAAF5051-04, with the same forward voltages and millicandela ratings. Choose AAAF5051-05 for improved brightness; choose SML-LX5050SIUPGUBC for exact performance matching or supply chain diversification.

Q: Are all three substitutes compatible with the same circuit design?

A: No. The AAAF5051-04 and SML-LX5050SIUPGUBC share identical forward voltages and require the same current-limiting resistor values. The AAAF5051-05 has lower forward voltages and higher brightness, requiring resistor recalculation. Verify forward voltage specifications and adjust series resistors accordingly for each substitute.

Q: What is the significance of the height difference between AAAF5051-04 (1.30mm) and AAAF5051-05 (1.40mm)?

A: The 0.10mm height increase does not affect standard PCB assembly processes or clearance requirements. Both parts maintain the same 6-SMD, Gull Wing package type and footprint. This dimension change is within typical manufacturing tolerances for surface mount components.

Q: Are all three parts ROHS3 compliant?

A: Yes. The AAAF5051-04, AAAF5051-05, and SML-LX5050SIUPGUBC are all ROHS3 compliant with MSL 3 (168 Hours) ratings, ensuring compatibility with standard lead-free assembly processes and moisture-controlled storage requirements.

Q: Which substitute offers the best brightness performance?

A: The AAAF5051-05 provides the highest luminous intensity, with 4000mcd red, 9000mcd green, and 2300mcd blue compared to 3200mcd, 6300mcd, and 1500mcd respectively for the original AAAF5051-04. The SML-LX5050SIUPGUBC matches the original brightness specifications exactly.