MST6441C Equivalent & Substitute Parts

Part Overview

The MST6441C is a 3-character, 0.56" green 7-segment LED display module manufactured by onsemi in a 12-DIP package configuration. This component features common cathode architecture with a forward voltage of 2.1V and 20mA test current, designed for numeric and alphanumeric display applications. The product is currently obsolete, making equivalent and substitute parts necessary for ongoing design support, maintenance, and new production requirements where compatible alternatives are available.

Substiute Parts

MST6441C

onsemiIn Stock: 3332MST6441C Datasheet

Current PartRFQ

BC56-12CGKWA

KingbrightIn Stock: 751BC56-12CGKWA Datasheet

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BC56-12GWA

KingbrightIn Stock: 1796BC56-12GWA Datasheet

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LDT-C512RI

Lumex Opto/Components Inc.In Stock: 2146LDT-C512RI Datasheet

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LTC-571G

Lite-On Inc.In Stock: 1155LTC-571G Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MST6441C is determined by the following critical parameters:

• Display Configuration: 3-character, 7-segment, common cathode architecture
• Character Size: 0.56" (14.22mm) digit/alpha size
• Color: Green LED
• Electrical Specifications: Forward voltage (Vf) range 2.1V–2.2V, test current 10mA–20mA
• Package Type: 12-DIP or 28-DIP configurations with compatible pinout

Substitute parts must maintain the same display type, character count, common cathode configuration, and character size. Variations in forward voltage within the specified range, test current, brightness (millicandela rating), and package pin count are acceptable provided the physical footprint and electrical interface remain compatible with the original design.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts listed are active products with ROHS3 compliance certification, providing long-term availability and regulatory alignment for new designs and production support.

12-DIP Package Substitutes (Direct Footprint Compatibility):

BC56-12GWA (Kingbright) and LTC-571G (Lite-On) maintain identical 12-DIP package configuration with the MST6441C. Both are active products with ROHS3 compliance. BC56-12GWA offers higher brightness (8.6mcd) with marginally elevated forward voltage (2.2V). LTC-571G provides closest electrical match with 2.1V forward voltage and 20mA test current, maintaining similar brightness characteristics (2.4mcd).

BC56-12CGKWA (Kingbright) is a 12-DIP variant with significantly higher brightness (35mcd) and ROHS3 compliance, suitable for applications requiring enhanced visibility.

28-DIP Package Substitute (Pinout Verification Required):

LDT-C512RI (Lumex) operates at reduced test current (10mA) with 28-DIP package configuration. This part requires verification of pinout compatibility with the original design before implementation. ROHS3 compliance is confirmed.

All substitute parts maintain common cathode architecture, 3-character configuration, 0.56" character size, and green color specification. Forward voltage variations (2.1V–2.2V) and test current differences (10mA–20mA) fall within acceptable operating ranges for typical display applications.

Frequently Asked Questions (FAQ)

Q: Can BC56-12GWA replace MST6441C directly?

A: Yes. BC56-12GWA maintains identical 12-DIP package configuration, 3-character 7-segment common cathode architecture, 0.56" character size, and green color. Forward voltage is 2.2V (versus 2.1V original) and test current is 20mA. Both parameters are within acceptable substitution range. The part is active with ROHS3 compliance.

Q: What is the difference between BC56-12GWA and BC56-12CGKWA?

A: Both are Kingbright 12-DIP green 7-segment 3-character common cathode displays with 0.56" character size. BC56-12CGKWA provides significantly higher brightness (35mcd versus 8.6mcd) and operates at 2.1V forward voltage. BC56-12GWA operates at 2.2V with lower brightness (8.6mcd). Selection depends on visibility requirements for the application.

Q: Can LDT-C512RI be used as a substitute?

A: LDT-C512RI is functionally equivalent in display type, character configuration, and color. However, it uses a 28-DIP package versus the 12-DIP original. Pinout compatibility must be verified before implementation. The part operates at 2.2V forward voltage with reduced test current (10mA). ROHS3 compliance is confirmed.

Q: Why does LTC-571G have lower power dissipation than the original?

A: LTC-571G operates at identical 2.1V forward voltage and 20mA test current as MST6441C but exhibits lower measured power dissipation (75mW versus 70mW maximum). This variation reflects manufacturing differences between onsemi and Lite-On but does not affect substitution eligibility. The part is active with ROHS3 compliance.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. BC56-12CGKWA, BC56-12GWA, LDT-C512RI, and LTC-571G are all ROHS3 compliant. The original MST6441C compliance status is not specified in available documentation.

Q: What is the brightness difference between substitute parts?

A: Millicandela ratings vary: BC56-12CGKWA (35mcd), BC56-12GWA (8.6mcd), LDT-C512RI (4.6mcd), and LTC-571G (2.4mcd). Selection should be based on application visibility requirements. Higher brightness parts are suitable for high-ambient-light environments; lower brightness parts are appropriate for standard indoor applications.