LED YELLOW DIFFUSED SMD R/A CMDA5AY7D1Z Equivalent & Substitute Parts

Part Overview

The CMDA5AY7D1Z is a yellow LED indication component manufactured by Visual Communications Company (VCC), configured as a discrete 2.1V 2-SMD surface mount device with right-angle mounting. This part is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design requirements and production continuity. The component features a diffused lens with 11.7mcd brightness rating and 150° viewing angle, suitable for indicator applications requiring yellow light emission.

Substiute Parts

CMDA5AY7D1Z

Visual Communications Company - VCCIn Stock: 1028CMDA5AY7D1Z Datasheet

Current PartRFQ

7012X7

Visual Communications Company - VCCIn Stock: 8947012X7 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CMDA5AY7D1Z is determined by the following critical parameters:

Electrical Compatibility Parameters:

• Forward voltage (Vf) of 2.1V nominal
• Test current of 20mA
• Millicandela rating of 11.7mcd
• Peak wavelength of 570nm

Mechanical Compatibility Parameters:

• Surface mount configuration
• Package footprint compatibility
• Lens size and style (rectangle with flat top)

Regulatory & Environmental Parameters:

• ROHS3 compliance
• REACH unaffected status
• Moisture sensitivity level tolerance

The substitute part 7012X7 shares identical electrical parameters (Vf, test current, mcd rating, and wavelength) and regulatory compliance status. However, this part differs in color (green vs. yellow), lens transparency (clear vs. diffused), mounting configuration (standard surface mount vs. right angle), and package type (0805 vs. 2-SMD no lead). These differences indicate the substitute is not a direct functional equivalent but rather a component from the same manufacturer with matching electrical performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

The 7012X7 substitute part shares identical electrical performance specifications (forward voltage, test current, brightness rating, and wavelength) with the CMDA5AY7D1Z. Both components maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for equivalent environmental and safety standards.

However, critical differences exist in physical form factor and optical properties. The 7012X7 employs a standard 0805 surface mount package versus the right-angle 2-SMD configuration of the main part, requiring PCB layout redesign. The substitute features clear lens transparency compared to the diffused lens of the original, affecting light distribution characteristics. Additionally, the 7012X7 emits green light rather than yellow, fundamentally altering the visual indication function.

The 7012X7 is classified as active product status, providing superior long-term availability and supply chain stability compared to the obsolete CMDA5AY7D1Z. Selection of the substitute requires confirmation that application requirements accommodate the optical and mechanical differences outlined in the parameter comparison table.

Frequently Asked Questions (FAQ)

Q: Can the 7012X7 directly replace the CMDA5AY7D1Z in existing designs?

A: No. While both components share identical electrical parameters (2.1V forward voltage, 20mA test current, 11.7mcd brightness), they differ in mounting configuration (right angle vs. standard surface mount), package type (2-SMD no lead vs. 0805), lens transparency (diffused vs. clear), and color (yellow vs. green). PCB layout modification and optical function reassessment are required.

Q: What are the key electrical parameters that determine substitution compatibility?

A: Forward voltage (Vf), test current, millicandela rating, and peak wavelength are the primary electrical parameters. The CMDA5AY7D1Z and 7012X7 both operate at 2.1V nominal forward voltage with 20mA test current, 11.7mcd brightness, and 570nm peak wavelength, establishing electrical equivalence.

Q: How do the package differences affect PCB design?

A: The CMDA5AY7D1Z uses a 2-SMD no lead right-angle package (2.00mm L x 0.80mm W), while the 7012X7 uses a standard 0805 surface mount package (2.00mm L x 1.25mm W). The right-angle configuration of the original part positions the LED perpendicular to the PCB, whereas the 0805 package mounts flat to the board surface. Footprint redesign is mandatory.

Q: Does the lens transparency difference impact circuit operation?

A: Lens transparency affects light distribution and intensity perception but does not impact electrical circuit operation. The diffused lens of the CMDA5AY7D1Z scatters light over a wider area, while the clear lens of the 7012X7 produces more focused light output. Both maintain the same 11.7mcd brightness rating at 20mA test current.

Q: Why is the 7012X7 listed as a substitute if the color differs?

A: The 7012X7 is provided as a substitute based on identical electrical performance parameters and active product status. However, the color difference (green vs. yellow) represents a functional change requiring application-level assessment. This substitution is valid only for applications where the color change is acceptable or where the indicator function can be adapted.

Q: Are there compliance differences between the two parts?

A: No. Both the CMDA5AY7D1Z and 7012X7 maintain ROHS3 compliance and REACH unaffected status. The 7012X7 features MSL 3 (168 hours) compared to MSL 4 (72 hours) for the original part, indicating superior moisture tolerance during storage and handling.

Q: What is the viewing angle specification for the 7012X7?

A: The viewing angle for the 7012X7 is not provided in the available technical data. The CMDA5AY7D1Z specifies 150° viewing angle. Confirmation of the 7012X7 viewing angle is necessary for applications with specific angular light distribution requirements.