MDA6140C Equivalent & Substitute Parts

Part Overview

The MDA6140C is a 14-segment alphanumeric LED display module manufactured by onsemi, designed for applications requiring dual-character red display output. This component features a common cathode configuration with a 0.54" character size and 18-DIP packaging. The product is currently classified as obsolete, making identification of compatible substitute parts essential for ongoing system support and new design implementations where equivalent functionality is required.

Substiute Parts

MDA6140C

onsemiIn Stock: 830MDA6140C Datasheet

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LTP-3784E

Lite-On Inc.In Stock: 3093LTP-3784E Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MDA6140C is determined by the following critical parameters:

• Display Configuration: 2-character, 14-segment alphanumeric display
• Common Pin Type: Common cathode architecture
• Package Type: 18-DIP form factor
• Character Size: 0.54" (13.72mm) digit/alpha size
• Electrical Compatibility: Forward voltage (Vf) within acceptable operating range, test current of 20mA, and mechanical fit within specified dimensions

The LTP-3784E from Lite-On Inc. meets these substitution criteria. While the color specification differs (orange-red versus red), the electrical characteristics, pin configuration, package type, character count, display type, and physical dimensions align within engineering tolerance for functional equivalence in applications where color variation is acceptable.

Parameter Comparison

Engineering Selection Recommendations

The LTP-3784E qualifies as a functional substitute for the MDA6140C based on matching electrical specifications, identical pin configuration, compatible package type, and equivalent character display architecture. The LTP-3784E is currently in active production status, ensuring availability for replacement and new design applications.

Key considerations for selection:

• Color Specification: The LTP-3784E produces orange-red output (630nm peak wavelength) compared to the MDA6140C red output (697nm peak wavelength). Applications with strict color matching requirements must evaluate visual compatibility.
• Brightness: The LTP-3784E provides 2.3mcd versus 1.4mcd for the MDA6140C, resulting in higher luminous intensity suitable for applications requiring enhanced visibility.
• Power Dissipation: The LTP-3784E maximum power dissipation is 75mW compared to 40mW for the MDA6140C. Circuit design must accommodate the increased thermal load.
• Compliance Status: The LTP-3784E carries RoHS3 compliance certification, supporting modern regulatory requirements.
• Availability: The LTP-3784E is in active production with substantial inventory availability, whereas the MDA6140C is obsolete.

Frequently Asked Questions (FAQ)

Q: Can the LTP-3784E directly replace the MDA6140C in existing circuit designs?

A: Yes, the LTP-3784E is mechanically and electrically compatible for direct substitution. Both components use 18-DIP packaging, common cathode configuration, identical pin counts, and matching test current specifications. Circuit board layouts and connector interfaces designed for the MDA6140C will accommodate the LTP-3784E without modification.

Q: What is the impact of the color difference between these two parts?

A: The MDA6140C produces red light at 697nm peak wavelength, while the LTP-3784E produces orange-red light at 630nm peak wavelength. In applications where display color is a functional or aesthetic requirement, this difference must be evaluated. For applications where red-spectrum output is acceptable, the orange-red output of the LTP-3784E is functionally equivalent.

Q: Are there electrical parameter differences that affect circuit design?

A: The forward voltage differs by 0.1V (2.1V for MDA6140C versus 2V for LTP-3784E), which is within standard operating tolerance and does not require circuit redesign. The LTP-3784E has higher maximum power dissipation (75mW versus 40mW), requiring verification that power supply and thermal management capacity is adequate for the substitute component.

Q: Why is the LTP-3784E brighter than the MDA6140C?

A: The LTP-3784E has a millicandela rating of 2.3mcd compared to 1.4mcd for the MDA6140C. This higher brightness rating reflects the luminous intensity specification for the component and may provide improved visibility in high-ambient-light environments.

Q: What packaging options are available for these components?

A: Both the MDA6140C and LTP-3784E are supplied in 18-DIP (0.600", 15.24mm) package format. The MDA6140C was available in standard packaging, while the LTP-3784E is supplied in tube packaging. Both formats are compatible with standard DIP insertion and soldering processes.

Q: Is the LTP-3784E compliant with current regulatory standards?

A: The LTP-3784E carries RoHS3 compliance certification and is REACH affected. The MDA6140C, being an obsolete product, does not carry current compliance certifications. For new designs or systems requiring modern regulatory compliance, the LTP-3784E is the appropriate selection.