AM27CGCK09 Equivalent & Substitute Parts

Part Overview

The AM27CGCK09 is an active green LED indication component manufactured by Kingbright, designed for surface mount applications. This discrete 2-SMD Z-Bend LED operates at a forward voltage of 2.1V and delivers 600mcd luminous intensity with a dominant wavelength of 570nm. The component features a clear, domed round lens with 1.78mm diameter and 20° viewing angle, housed in a compact 2.21mm × 2.04mm × 2.92mm package.

Substitute parts are identified to address inventory availability, regional supplier preferences, or specific packaging requirements while maintaining functional compatibility within the defined electrical and mechanical parameters.

Substiute Parts

AM27CGCK09

KingbrightIn Stock: 723AM27CGCK09 Datasheet

Current PartRFQ

CMD9121VGCTR10

Visual Communications Company - VCCIn Stock: 2181CMD9121VGCTR10 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AM27CGCK09 are identified based on strict alignment with the following critical parameters:

Mandatory Matching Parameters:

• Color: Green
• Voltage - Forward (Vf): 2.1V
• Mounting Type: Surface Mount
• Package / Case: 2-SMD, Z-Bend
• Lens Transparency: Clear
• Lens Style: Round with Domed Top
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 3 (168 Hours)

Allowable Variation Parameters:

• Millicandela Rating: Substitutes may vary within application tolerance
• Wavelength - Dominant: Green spectrum variations acceptable (565nm–574nm range)
• Lens Size: Minor dimensional variations permitted within mechanical constraints
• Viewing Angle: Variations acceptable based on application requirements
• Packaging Format: Tape & Reel acceptable as alternative to standard packaging

The CMD9121VGCTR10 qualifies as a substitute based on matching all mandatory parameters while operating within the allowable variation range for luminous intensity and wavelength specifications.

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection (AM27CGCK09): The AM27CGCK09 is recommended for applications requiring 600mcd luminous intensity with a 20° viewing angle. This part maintains active product status and full ROHS3 compliance. The 570nm dominant wavelength provides standard green LED indication characteristics suitable for general-purpose signaling applications.

Substitute Part Selection (CMD9121VGCTR10): The CMD9121VGCTR10 qualifies as a functional substitute when the following conditions are met:

• Application tolerance permits 50mcd luminous intensity (compared to 600mcd primary part)
• Wider 25° viewing angle is acceptable or beneficial for the application
• Tape & Reel packaging format is compatible with assembly processes
• Minor dimensional variations (2.50mm × 2.00mm × 3.00mm versus 2.21mm × 2.04mm × 2.92mm) do not conflict with PCB layout constraints
• Peak wavelength of 565nm provides acceptable green spectrum performance

Both parts maintain identical forward voltage (2.1V), RoHS3 compliance, MSL rating, and regulatory classifications (REACH Unaffected, ECCN EAR99, HTSUS 8541.41.0000), ensuring circuit compatibility and supply chain compliance.

Frequently Asked Questions (FAQ)

Q: Can the CMD9121VGCTR10 replace the AM27CGCK09 in all applications?

A: The CMD9121VGCTR10 is electrically compatible (2.1V forward voltage match) and mechanically compatible (2-SMD Z-Bend package). However, the substitute delivers 50mcd versus 600mcd luminous intensity. Substitution is valid only when application requirements permit lower brightness levels. Verify brightness requirements in the circuit design specification before substitution.

Q: What is the significance of the 20° versus 25° viewing angle difference?

A: The AM27CGCK09 provides a 20° viewing angle, while the CMD9121VGCTR10 provides 25°. A wider viewing angle (25°) allows the LED to be visible across a broader range of observation positions. This difference is application-dependent; narrower angles concentrate light intensity in a specific direction, while wider angles distribute light over a larger area.

Q: Are there packaging differences between these parts?

A: The AM27CGCK09 is supplied in standard packaging, while the CMD9121VGCTR10 is supplied in Tape & Reel (TR) format. Both use the 2-SMD Z-Bend package configuration. Tape & Reel packaging is standard for high-volume surface mount assembly processes and is compatible with automated pick-and-place equipment.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both the AM27CGCK09 and CMD9121VGCTR10 are ROHS3 compliant, REACH unaffected, classified as EAR99 for export control, and assigned HTSUS code 8541.41.0000. Both maintain MSL rating of 3 (168 Hours), indicating identical moisture sensitivity handling requirements.

Q: What is the impact of the 1.78mm versus 1.90mm lens diameter?

A: The lens diameter difference (0.12mm) is minor and does not affect electrical performance. This variation may have negligible impact on optical characteristics in most applications. Verify that PCB layout and mechanical clearances accommodate the slightly larger 1.90mm diameter of the substitute part.

Q: Can I use the CMD9121VGCTR10 if my circuit requires 600mcd brightness?

A: No. The CMD9121VGCTR10 delivers 50mcd, which is insufficient for applications requiring 600mcd brightness. The substitute part is suitable only for applications with lower brightness requirements or where the reduced intensity is acceptable for the intended function.

Q: Are the physical dimensions compatible with existing PCB layouts?

A: The AM27CGCK09 measures 2.21mm × 2.04mm × 2.92mm, while the CMD9121VGCTR10 measures 2.50mm × 2.04mm × 3.00mm. The substitute is slightly larger in length and height. Verify that PCB footprints and component clearances accommodate these dimensional variations before substitution.

Q: What is the difference between dominant wavelength and peak wavelength?

A: Dominant wavelength (570nm for AM27CGCK09) represents the wavelength at which the human eye perceives the color. Peak wavelength (574nm for AM27CGCK09, 565nm for CMD9121VGCTR10) represents the wavelength with maximum spectral output. Both parts operate within the green spectrum range, with minor variations that do not affect visual perception in typical indication applications.