Equivalent & Substitute Parts for AA4040MGS

Part Overview

The AA4040MGS is a green LED indication component manufactured by Kingbright, designed for surface mount right-angle applications. This 2-SMD boomerang package LED operates at 2.1V forward voltage with a 120mcd brightness rating and 570nm dominant wavelength. The component is classified as Active product status with full RoHS3 compliance and REACH unaffected designation. Substitute parts are identified to address inventory availability, lead time requirements, or specific application parameter needs while maintaining functional compatibility within the 2-SMD boomerang right-angle LED category.

Substiute Parts

AA4040MGS

KingbrightIn Stock: 750AA4040MGS Datasheet

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SML-LXR44SUGC-TR

Lumex Opto/Components Inc.In Stock: 29319SML-LXR44SUGC-TR Datasheet

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XZVG67S

SunLEDIn Stock: 10707XZVG67S Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AA4040MGS is determined by strict adherence to the following critical parameters:

Mandatory Matching Parameters:

• Color: Green
• Package / Case: 2-SMD, Boomerang
• Mounting Type: Surface Mount, Right Angle
• Lens Size: 2.40mm Dia
• Lens Style: Round with Flat Top
• Lens Transparency: Clear
• Size / Dimension: 4.00mm L x 3.60mm W
• Height (Max): 4.00mm
• Current - Test: 20mA
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 3 (168 Hours)
• Product Status: Active

Allowable Parameter Variance:

• Voltage - Forward (Vf): ±0.1V tolerance acceptable
• Millicandela Rating: Brightness variance permitted based on application requirements
• Viewing Angle: 90° to 120° range acceptable
• Wavelength - Peak: 574nm fixed across all qualified substitutes
• Wavelength - Dominant: 570nm preferred, variance acceptable within green spectrum

Both identified substitute parts (SML-LXR44SUGC-TR and XZVG67S) satisfy all mandatory matching parameters and fall within allowable variance ranges for electrical and optical characteristics.

Parameter Comparison

Engineering Selection Recommendations

All three components maintain Active product status with full RoHS3 compliance and REACH unaffected designation, ensuring regulatory compliance across all substitution options.

SML-LXR44SUGC-TR (Lumex Opto/Components Inc.): This substitute operates at 2.2V forward voltage with elevated brightness output of 210mcd compared to the 120mcd reference specification. The viewing angle is reduced to 90° from the 120° reference angle. Selection of this substitute is appropriate when higher luminous intensity is required within the application circuit design parameters. The 0.1V forward voltage increase requires circuit verification to confirm compatibility with existing current-limiting resistor calculations.

XZVG67S (SunLED): This substitute maintains identical forward voltage (2.1V) and viewing angle (120°) specifications to the reference part. The millicandela rating is 89mcd, representing lower brightness output than the 120mcd reference. The dominant wavelength specification of 570nm matches the reference part exactly. Selection of this substitute is appropriate when brightness reduction is acceptable or when lower luminous intensity is required for the application. Electrical circuit parameters require no modification from the reference design.

Component selection among these three options depends on application-specific brightness requirements, viewing angle constraints, and circuit design parameters. All three components are electrically and mechanically compatible within the 2-SMD boomerang right-angle LED category.

Frequently Asked Questions (FAQ)

Q: Can SML-LXR44SUGC-TR be used as a direct replacement for AA4040MGS without circuit modification?

A: SML-LXR44SUGC-TR operates at 2.2V forward voltage compared to 2.1V for AA4040MGS. The 0.1V difference requires verification of the current-limiting resistor value to ensure proper LED current at 20mA test condition. Mechanical and package compatibility is confirmed. Circuit simulation or testing is necessary to validate performance with existing resistor values.

Q: What is the primary difference between XZVG67S and AA4040MGS?

A: XZVG67S provides identical electrical characteristics (2.1V forward voltage, 20mA test current, 120° viewing angle) and mechanical compatibility. The primary difference is reduced brightness output at 89mcd compared to 120mcd for the reference part. All other parameters including wavelength, package, and dimensions are equivalent.

Q: Are all three components suitable for the same PCB layout?

A: Yes. All three components share identical mechanical specifications: 4.00mm L x 3.60mm W footprint, 4.00mm maximum height, 2.40mm diameter lens, and 2-SMD boomerang right-angle mounting configuration. PCB layout and footprint design require no modification when substituting between these three parts.

Q: What is the significance of the 90° versus 120° viewing angle difference?

A: Viewing angle defines the cone of light emission from the LED. The 120° viewing angle (AA4040MGS and XZVG67S) provides wider light distribution, while the 90° viewing angle (SML-LXR44SUGC-TR) concentrates light in a narrower cone. Application requirements determine which viewing angle is appropriate for the intended use case.

Q: Do all substitute parts maintain the same moisture sensitivity level?

A: Yes. All three components are classified as MSL 3 (168 Hours), indicating identical moisture sensitivity and storage requirements. Handling, storage, and reflow soldering procedures are equivalent across all three parts.

Q: Is the 210mcd brightness of SML-LXR44SUGC-TR compatible with applications designed for 120mcd?

A: SML-LXR44SUGC-TR provides 75% higher brightness output. Compatibility depends on application-specific requirements. If the application circuit includes brightness-limiting resistors or current-limiting designs, the higher brightness may exceed intended specifications. If the application requires maximum brightness within the green LED category, this substitute provides enhanced performance.