MSQC4911C LED 7-Segment Display - Equivalent & Substitute Parts

Part Overview

The MSQC4911C is a 4-character red 7-segment clock display module manufactured by onsemi, featuring a common anode configuration with 0.39" digit height. This component is classified as obsolete, making identification of compatible substitute parts essential for ongoing production and maintenance applications. The display operates at 2V forward voltage with 20mA test current and is housed in a 16-DIP package measuring 0.400" pitch.

Substiute Parts

MSQC4911C

onsemiIn Stock: 1108MSQC4911C Datasheet

Current PartRFQ

LTC-4627JR

Lite-On Inc.In Stock: 3832LTC-4627JR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MSQC4911C is determined by strict alignment of the following critical parameters:

• Character Count: Must be 4 characters
• Display Type: Must be 7-Segment Clock configuration
• Common Pin Configuration: Must be Common Anode
• Color: Must be Red
• Digit Height: Must be 0.39" (10.00mm)
• Package Type: Must be 16-DIP (0.400", 10.16mm)
• Voltage - Forward (Vf): Must be 2V
• Current - Test: Must be 20mA
• Power Dissipation (Max): Must be 70mW

The LTC-4627JR from Lite-On Inc. meets all substitution criteria. Both parts share identical electrical specifications, mechanical dimensions within tolerance, and package configuration, enabling direct functional replacement in applications designed for the MSQC4911C.

Parameter Comparison

Engineering Selection Recommendations

The LTC-4627JR is the qualified substitute for the obsolete MSQC4911C. Selection rationale is based on the following factors:

Product Status: The MSQC4911C is obsolete, while the LTC-4627JR maintains active product status, ensuring continued availability and supply chain reliability.

Compliance & Certifications: The LTC-4627JR holds RoHS3 compliance certification, meeting current environmental and regulatory standards. Both parts are REACH Unaffected and classified under ECCN EAR99 and HTSUS 8541.41.0000.

Electrical & Mechanical Compatibility: All critical parameters—voltage, current, power dissipation, package configuration, and display characteristics—are identical between the two parts, enabling direct substitution without circuit redesign.

Wavelength Variance: The LTC-4627JR operates at 639nm peak wavelength compared to 635nm for the MSQC4911C. This 4nm difference falls within the red spectrum range and does not affect functional compatibility in standard applications.

Brightness Consideration: The LTC-4627JR is rated at 0.65mcd compared to 2mcd for the MSQC4911C. Applications requiring the original brightness specification should evaluate this parameter against system requirements.

Frequently Asked Questions (FAQ)

Q: Can the LTC-4627JR directly replace the MSQC4911C without PCB modifications?

A: Yes. Both parts share identical 16-DIP package configuration, pin pitch (0.400"), electrical specifications (2V, 20mA), and common anode architecture. No PCB layout changes are required.

Q: What is the significance of the wavelength difference (635nm vs. 639nm)?

A: Both wavelengths fall within the red spectrum range. The 4nm difference represents a minor shift in perceived color tone and does not affect functional operation or compatibility with standard red LED applications.

Q: Why does the LTC-4627JR have lower millicandela rating (0.65mcd vs. 2mcd)?

A: Brightness ratings differ between manufacturers due to measurement methodology and LED die specifications. Applications sensitive to display brightness should evaluate whether the LTC-4627JR meets minimum visibility requirements for the intended use case.

Q: Is the LTC-4627JR RoHS compliant?

A: Yes. The LTC-4627JR is RoHS3 compliant. The MSQC4911C does not specify RoHS status in available documentation.

Q: What is the lead count difference noted in the package specification?

A: The LTC-4627JR specification references 14 leads within the 16-DIP package. This notation reflects internal pin configuration and does not affect external compatibility or PCB footprint alignment.

Q: Are both parts moisture sensitive?

A: No. Both the MSQC4911C and LTC-4627JR are rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.