MSQC6942C Equivalent & Substitute Parts

Part Overview

The MSQC6942C is a red 7-segment LED display module manufactured by onsemi, featuring a 4-character common cathode configuration with 0.56" digit size. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing production and maintenance applications. The display operates at 2V forward voltage with 20mA test current and delivers 2mcd brightness at 635nm wavelength peak.

Substiute Parts

MSQC6942C

onsemiIn Stock: 920MSQC6942C Datasheet

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LTC-5723HR

Lite-On Inc.In Stock: 2501LTC-5723HR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MSQC6942C is determined by strict alignment with the following electrical and mechanical parameters:

• Display Configuration: 4-character, 7-segment, common cathode topology
• Optical Specifications: Red color, 0.56" digit size, 635nm peak wavelength
• Electrical Characteristics: 2V forward voltage, 20mA test current
• Physical Compatibility: Overall dimensions and pin configuration must accommodate existing PCB layouts
• Environmental Rating: MSL 1 classification for unlimited moisture exposure

The LTC-5723HR from Lite-On Inc. meets these substitution criteria across all critical parameters while maintaining active product status and RoHS3 compliance.

Parameter Comparison

Engineering Selection Recommendations

The LTC-5723HR is a direct functional equivalent for the MSQC6942C. Both components share identical electrical operating parameters (2V forward voltage, 20mA test current) and optical specifications (635nm wavelength, 0.56" digit size, common cathode configuration).

The LTC-5723HR offers the following advantages for new designs and production continuity:

• Active product status ensures long-term availability and supply chain stability
• RoHS3 compliance meets current environmental and regulatory requirements
• Slightly higher millicandela rating (2.4mcd vs. 2mcd) provides improved brightness margin
• Marginally higher power dissipation rating (75mW vs. 70mW) offers additional thermal headroom

Physical dimensions show minor variations in height (0.748" vs. 0.673"), which must be evaluated against specific PCB layout constraints. The LTC-5723HR uses 12-DIP packaging, requiring verification of pin compatibility with existing circuit designs.

Frequently Asked Questions (FAQ)

Q: Can the LTC-5723HR directly replace the MSQC6942C in existing designs?

A: The LTC-5723HR matches all critical electrical and optical parameters. However, physical dimensions and packaging differences (12-DIP vs. original packaging) require PCB layout verification before implementation.

Q: What are the key compatibility criteria for 7-segment display substitution?

A: Critical parameters include character count, display type (7-segment), common pin configuration (cathode vs. anode), color, digit size, forward voltage, test current, and wavelength. All must align exactly for functional equivalence.

Q: Why is the MSQC6942C obsolete?

A: The product status reflects onsemi's discontinuation of this component line. The LTC-5723HR provides continuity for applications requiring 4-character red 7-segment displays with identical electrical specifications.

Q: Are there packaging considerations when substituting these parts?

A: Yes. The MSQC6942C uses a different package format than the LTC-5723HR 12-DIP configuration. Pin pitch, lead spacing, and mounting footprint must be evaluated for PCB compatibility.

Q: Does the brightness difference between 2mcd and 2.4mcd affect circuit design?

A: The 0.4mcd increase is within typical LED brightness tolerance ranges and does not require circuit modifications. Existing current-limiting resistor values remain valid.

Q: What compliance standards apply to these components?

A: The LTC-5723HR meets RoHS3 requirements. Both components carry MSL 1 (Unlimited) moisture sensitivity ratings and EAR99 export classification.