COM-08653 Equivalent & Substitute Parts Reference

Part Overview

The COM-08653 is a 12-key non-illuminated keypad switch manufactured by SparkFun Electronics, featuring conductive rubber contacts with polymer keys arranged in a 3×4 matrix configuration. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations. The keypad utilizes a matrix output architecture with fixed telephone format legend and panel-mount front installation.

Substiute Parts

COM-08653

SparkFun ElectronicsIn Stock: 1187COM-08653 Datasheet

Current PartRFQ

1824

Adafruit Industries LLCIn Stock: 11021824 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the COM-08653 is determined by strict equivalence across the following critical parameters:

• Matrix Configuration: Must be 3 × 4 (12-key total)
• Switch Technology: Conductive rubber contact mechanism
• Key Material: Polymer construction
• Output Architecture: Matrix output format
• Illumination Status: Non-illuminated operation
• Legend Configuration: Fixed telephone format
• Mounting Method: Panel mount, front installation
• Regulatory Compliance: RoHS compliance status

The substitute part Adafruit Industries LLC model 1824 meets all functional and electrical equivalence criteria for direct substitution in applications requiring a 12-key matrix keypad with conductive rubber switching technology.

Parameter Comparison

Engineering Selection Recommendations

The Adafruit Industries LLC model 1824 is functionally equivalent to the obsolete COM-08653 across all critical electrical and mechanical parameters. Both components share identical matrix architecture (3 × 4), conductive rubber switching technology, polymer key construction, and telephone format legend configuration. Both maintain RoHS compliance and identical tariff classification.

The primary distinction between these components is termination style: the COM-08653 uses card edge/solder pad termination, while the 1824 employs pin header termination. This difference requires circuit board design modification to accommodate the alternative connection method. Additionally, the 1824 features inverted color scheme (white legend on black keys versus black legend on white keys in the original), which may impact visual interface consistency in legacy system replacements.

The 1824 is currently in active production status, ensuring long-term availability and supply chain continuity compared to the obsolete COM-08653.

Frequently Asked Questions (FAQ)

Q: Can the Adafruit 1824 directly replace the COM-08653 without circuit board modification?

A: Direct replacement requires accommodation of the termination style difference. The COM-08653 uses card edge/solder pad connections, while the 1824 uses pin header termination. Circuit board redesign is necessary to interface with the alternative connection method.

Q: Are the electrical characteristics identical between these two keypads?

A: Yes. Both components utilize identical 3 × 4 matrix architecture, conductive rubber contact technology, and matrix output format. Electrical performance is equivalent for all switching and signal transmission functions.

Q: Does the color difference between legend and key affect functionality?

A: No. The inverted color scheme (white legend on black keys for the 1824 versus black legend on white keys for the COM-08653) is a cosmetic distinction only and does not impact electrical or mechanical functionality. Visual appearance in the user interface may differ.

Q: Are both components RoHS compliant?

A: Yes. Both the COM-08653 and the Adafruit 1824 are RoHS compliant and share identical ECCN (EAR99) and HTSUS (8537.10.9170) classifications.

Q: What is the availability status of each component?

A: The COM-08653 is classified as obsolete. The Adafruit 1824 is in active production status, providing assured long-term availability for new designs and system support applications.