MDA6341C Equivalent & Substitute Parts

Part Overview

The MDA6341C is a 14-segment alphanumeric LED display module manufactured by onsemi, designed for applications requiring dual-character yellow numeric and alphabetic display capability. 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 functionally equivalent substitute parts essential for ongoing system support, design updates, and procurement continuity.

Substiute Parts

MDA6341C

onsemiIn Stock: 799MDA6341C Datasheet

Current PartRFQ

LDD-F5403RI

Lumex Opto/Components Inc.In Stock: 1063LDD-F5403RI Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MDA6341C is determined by strict alignment with the following critical parameters:

• Display Configuration: 2-character, 14-segment alphanumeric format
• Character Size: 0.54" (13.72mm) digit/alpha size
• Common Pin Type: Common cathode architecture
• Color: Yellow LED emission
• Forward Voltage: 2.1V typical operation
• Package Type: 18-DIP (0.600", 15.24mm) with 14 leads
• Mechanical Dimensions: Compatible footprint and mounting profile

The LDD-F5403RI from Lumex Opto/Components Inc. meets all primary substitution criteria, maintaining identical display type, character count, character size, common cathode configuration, color specification, forward voltage, and package format. This part qualifies as a direct functional equivalent for the obsolete MDA6341C.

Parameter Comparison

Engineering Selection Recommendations

The LDD-F5403RI is a qualified substitute for the obsolete MDA6341C based on the following engineering criteria:

Functional Equivalence: Both parts share identical display architecture (2-character, 14-segment alphanumeric), common cathode configuration, character size (0.54"), color (yellow), forward voltage (2.1V), and 18-DIP package format. Pin-to-pin compatibility is maintained for direct PCB substitution.

Product Status and Availability: The MDA6341C is obsolete with no ongoing manufacturing. The LDD-F5403RI is in active production status, ensuring long-term supply chain reliability and availability for new designs and system maintenance.

Compliance and Certifications: The LDD-F5403RI carries ROHS3 compliance certification, meeting current environmental and regulatory standards. Both parts are REACH Unaffected and classified under ECCN EAR99.

Operational Differences: The LDD-F5403RI operates at 10mA test current versus the MDA6341C's 20mA, resulting in lower power consumption and reduced thermal load. The substitute exhibits lower brightness (2.5mcd versus 4mcd) and slightly higher maximum power dissipation (105mW versus 70mW). These differences are within acceptable ranges for most display applications and do not preclude substitution.

Mechanical Compatibility: Physical dimensions are nearly identical with negligible variation (0.3mm height and width differences), ensuring compatibility with existing mechanical assemblies and mounting structures.

Frequently Asked Questions (FAQ)

Q: Can the LDD-F5403RI be used as a direct replacement for the MDA6341C without PCB modifications?

A: Yes. Both parts use identical 18-DIP (0.600", 15.24mm) packaging with 14 leads and common cathode configuration. Pin assignments and electrical interface are compatible, allowing direct substitution without PCB layout changes.

Q: What are the key differences between these two parts?

A: The primary differences are test current (MDA6341C: 20mA; LDD-F5403RI: 10mA), brightness rating (MDA6341C: 4mcd; LDD-F5403RI: 2.5mcd), and product status (MDA6341C: obsolete; LDD-F5403RI: active production). Forward voltage, display type, character size, and package format are identical.

Q: Will the lower brightness of the LDD-F5403RI affect display visibility?

A: The LDD-F5403RI's 2.5mcd rating is lower than the MDA6341C's 4mcd. Visibility impact depends on application lighting conditions and viewing distance. Applications requiring maximum brightness should evaluate this parameter against specific environmental requirements.

Q: Is the LDD-F5403RI compliant with current environmental regulations?

A: Yes. The LDD-F5403RI is ROHS3 compliant and REACH Unaffected, meeting current environmental and regulatory standards for electronic components.

Q: What is the wavelength difference between these parts?

A: The MDA6341C has a peak wavelength of 590nm while the LDD-F5403RI is 585nm. Both fall within the yellow spectrum range. This 5nm difference is minor and typically imperceptible to human vision.

Q: Can I use the LDD-F5403RI in high-brightness applications?

A: The LDD-F5403RI's 2.5mcd rating is suitable for standard indoor display applications. Applications requiring high brightness or operation in bright ambient light conditions should evaluate whether this brightness level meets specific visibility requirements.

Q: Are there any thermal considerations when substituting the LDD-F5403RI?

A: The LDD-F5403RI has a maximum power dissipation of 105mW compared to the MDA6341C's 70mW. Despite the higher maximum rating, the substitute typically operates at lower current (10mA versus 20mA), resulting in reduced thermal load during normal operation. Thermal design should account for the maximum dissipation specification.