MST6411C Equivalent & Substitute Parts

Part Overview

The MST6411C is a 3-character 7-segment LED display module manufactured by onsemi, featuring a 0.56" digit size with green color output. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The display operates as a common anode configuration with a forward voltage of 2.1V and test current of 20mA, housed in a 12-DIP package measuring 0.752" H x 1.484" W x 0.315" D.

Key Parameters

Parameter	MST6411C Value
Number of Characters	3
Display Type	7-Segment
Common Pin Configuration	Common Anode
Color	Green
Digit/Alpha Size	0.56" (14.22mm)
Voltage - Forward (Vf) Typical	2.1V
Current - Test	20mA
Package / Case	12-DIP
Wavelength - Peak	570nm
Power Dissipation (Max)	70mW
Millicandela Rating	2.2mcd
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility for the MST6411C is determined by the following critical parameters:

Display Configuration: 3-character, 7-segment, common anode architecture
Electrical Specifications: Forward voltage 2.1V to 2.2V range, 20mA test current
Physical Form Factor: 0.56" digit size, 12-DIP package configuration
Color Output: Green wavelength (565nm to 574nm range)

Substitute parts must maintain compatibility across these core parameters to ensure direct functional replacement in existing circuit designs. Variations in millicandela rating, power dissipation, and wavelength peak within acceptable ranges do not preclude substitution, provided the primary electrical and mechanical specifications align.

Parameter Comparison

Parameter	MST6411C (onsemi)	BA56-12CGKWA (Kingbright)	BA56-12GWA (Kingbright)	LTC-561G (Lite-On Inc.)
Number of Characters	3	3	3	3
Display Type	7-Segment	7-Segment	7-Segment	7-Segment
Common Pin Configuration	Common Anode	Common Anode	Common Anode	Common Anode
Color	Green	Green	Green	Green
Digit/Alpha Size	0.56" (14.22mm)	0.56" (14.22mm)	0.56" (14.22mm)	0.56" (14.22mm)
Voltage - Forward (Vf) Typical	2.1V	2.1V	2.2V	2.1V
Current - Test	20mA	20mA	20mA	20mA
Wavelength - Peak	570nm	574nm	565nm	565nm
Power Dissipation (Max)	70mW	75mW	62.5mW	75mW
Millicandela Rating	2.2mcd	35mcd	8.6mcd	2.4mcd
Package / Case	12-DIP	12-DIP (0.600", 15.24mm)	28-DIP Module (0.600", 15.24mm), 12 Leads	12-DIP (0.600", 15.24mm)
Product Status	Obsolete	Active	Active	Active

Engineering Selection Recommendations

BA56-12CGKWA (Kingbright) and LTC-561G (Lite-On Inc.) are the primary substitutes for the MST6411C. Both parts maintain identical 12-DIP package configuration, matching electrical specifications (2.1V forward voltage, 20mA test current), and equivalent physical dimensions. Both substitute parts carry active product status and RoHS3 compliance certification, ensuring long-term availability and regulatory alignment.

BA56-12GWA (Kingbright) presents a package variation with 28-DIP Module configuration and 12 leads, requiring circuit board layout modification. While electrically compatible with a 2.2V forward voltage specification, this part necessitates mechanical redesign and is suitable only when board space permits module-level integration.

Selection between BA56-12CGKWA and LTC-561G should be based on procurement availability, lead time requirements, and supplier preference, as both parts satisfy identical functional and electrical requirements for direct replacement of the obsolete MST6411C.

Frequently Asked Questions (FAQ)

Q: Can BA56-12CGKWA directly replace MST6411C without circuit modification?

A: Yes. BA56-12CGKWA maintains identical 12-DIP package pinout, forward voltage (2.1V), test current (20mA), and common anode configuration. No circuit redesign is required.

Q: What is the difference between BA56-12CGKWA and BA56-12GWA?

A: BA56-12CGKWA uses a standard 12-DIP package, while BA56-12GWA employs a 28-DIP Module configuration with 12 active leads. BA56-12GWA requires board layout modification and is not a direct pin-for-pin replacement.

Q: Are there brightness differences between substitute parts?

A: Millicandela ratings vary: MST6411C (2.2mcd), BA56-12CGKWA (35mcd), BA56-12GWA (8.6mcd), and LTC-561G (2.4mcd). Brightness differences may be perceptible in applications with specific luminosity requirements. Circuit current-limiting resistor values may require adjustment to maintain consistent display brightness.

Q: Do all substitute parts meet RoHS compliance?

A: BA56-12CGKWA and LTC-561G are RoHS3 compliant. The original MST6411C does not specify RoHS status. All parts are REACH unaffected.

Q: What is the wavelength difference impact?

A: Wavelength variations (565nm to 574nm) represent minor color shifts within the green spectrum. These differences are typically imperceptible in standard display applications and do not affect functional compatibility.

Q: Can I use LTC-561G as a substitute?

A: Yes. LTC-561G is functionally equivalent with matching 12-DIP package, 2.1V forward voltage, 20mA test current, and common anode configuration. Active product status ensures ongoing availability.

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