COM-11443 Addressable LED 7 Segment I2C Yellow Display - Equivalent & Substitute Parts

Part Overview

The COM-11443 is a 4-digit addressable LED 7-segment display with yellow LEDs, manufactured by SparkFun Electronics. This component integrates an ATMega328 controller and supports multiple communication interfaces (I2C, SPI, UART), enabling flexible integration into embedded systems and IoT applications. The product is currently obsolete, making equivalent substitute parts necessary for ongoing design work, maintenance, and production requirements.

Substiute Parts

COM-11443

SparkFun ElectronicsIn Stock: 1206COM-11443 Datasheet

Current PartRFQ

879

Adafruit Industries LLCIn Stock: 874879 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the COM-11443 is determined by the following critical parameters:

• Configuration & Display Type: 7-segment display format with 4-digit capacity
• LED Color: Yellow LEDs
• Communication Protocol: I2C compatibility as primary interface
• Controller Architecture: Microcontroller-based addressable control
• Environmental Compliance: RoHS compliance and MSL rating
• Physical Form Factor: Mounting type and dimensional compatibility

The substitute part Adafruit Industries LLC model 879 meets these core substitution criteria. While the controller type differs (MAX7219 vs. ATMega328), both controllers provide addressable 7-segment display functionality via I2C protocol, making them functionally equivalent for applications requiring I2C communication.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: Adafruit Industries LLC Model 879

The Adafruit 879 is the qualified substitute for COM-11443 based on the following engineering criteria:

• Functional Equivalence: Both components provide 4-digit, 7-segment yellow LED display functionality with I2C addressability
• Compliance Status: The Adafruit 879 maintains RoHS3 compliance and identical MSL rating, ensuring environmental and regulatory compatibility
• Interface Compatibility: I2C protocol support enables direct integration into existing designs using I2C communication
• Active Product Status: The Adafruit 879 is currently in active production, ensuring long-term availability and supply chain stability

Design Consideration: The COM-11443 supports SPI and UART in addition to I2C, while the Adafruit 879 supports I2C only. Applications requiring SPI or UART communication must evaluate alternative substitutes or implement protocol conversion if necessary.

Frequently Asked Questions (FAQ)

Q: Can the Adafruit 879 directly replace the COM-11443 in existing designs?

A: Yes, for applications using I2C communication. Both components provide identical 4-digit, 7-segment yellow LED display functionality with I2C addressability. If your design uses SPI or UART protocols, protocol compatibility must be verified before substitution.

Q: What is the primary difference between the COM-11443 and Adafruit 879?

A: The controller architecture differs (ATMega328 vs. MAX7219), but both provide equivalent I2C-addressable 7-segment display control. The Adafruit 879 is currently in active production, while the COM-11443 is obsolete.

Q: Are there packaging differences between these components?

A: The COM-11443 uses user-defined mounting, while the Adafruit 879 is supplied in bulk packaging. Both maintain identical MSL ratings and environmental compliance standards.

Q: Does the Adafruit 879 meet RoHS requirements?

A: Yes. The Adafruit 879 is ROHS3 compliant, exceeding the RoHS compliance of the COM-11443, ensuring regulatory compatibility for new designs and production.

Q: What if my application requires SPI or UART communication?

A: The Adafruit 879 supports I2C only. Applications requiring SPI or UART must identify alternative substitutes or implement protocol conversion circuitry to maintain compatibility with existing firmware.