SC43-11EWA 7-Segment LED Display - Equivalent & Substitute Parts

Part Overview

The SC43-11EWA is a single-character red 7-segment LED display manufactured by Kingbright, designed for numeric and alphanumeric applications requiring visual indication. This component features a 0.43-inch character size in a 14-DIP package configuration with common cathode architecture. The part maintains Active product status and is RoHS3 compliant, making it suitable for current industrial and consumer applications. Substitute parts are identified to address inventory availability, lead time constraints, or specific application requirements while maintaining functional compatibility within defined electrical and mechanical parameters.

Substiute Parts

SC43-11EWA

KingbrightIn Stock: 968SC43-11EWA Datasheet

Current PartRFQ

LDS-C416RI

Lumex Opto/Components Inc.In Stock: 1648LDS-C416RI Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SC43-11EWA is determined by strict alignment across the following critical parameters:

Mandatory Matching Parameters:

• Display Type: 7-Segment configuration
• Number of Characters: Single character (1)
• Character Size: 0.43 inches (10.92mm)
• Common Pin Configuration: Common Cathode
• Color: Red
• Package Type: 14-DIP
• Physical Dimensions: Tolerance within 0.748" H × 0.496" W × 0.310" D

Electrical Compatibility Parameters:

• Forward Voltage (Typ): 2.0V nominal operation
• Test Current: 20mA nominal operation
• Wavelength - Peak: 627nm red spectrum
• Power Dissipation: Within 75mW maximum rating

The substitute part LDS-C416RI meets all mandatory matching parameters and maintains functional compatibility within the defined electrical operating range. Variations in forward voltage (1.8V vs. 2.0V), test current (10mA vs. 20mA), millicandela rating (9.8mcd vs. 6.9mcd), and wavelength (660nm vs. 627nm) remain within acceptable substitution tolerances for common cathode 7-segment display applications.

Parameter Comparison

Engineering Selection Recommendations

SC43-11EWA Selection Criteria:

• Primary choice when forward voltage specification of 2.0V is required by circuit design
• Preferred when test current specification of 20mA is mandated by application requirements
• Suitable for applications requiring 627nm wavelength specification
• Recommended when power dissipation budget is constrained to 75mW maximum

LDS-C416RI Selection Criteria:

• Acceptable substitute when lower forward voltage (1.8V) operation is compatible with circuit design
• Suitable when reduced test current (10mA) aligns with application power budget
• Compatible when higher brightness (9.8mcd vs. 6.9mcd) provides design advantage
• Acceptable when 660nm wavelength (deeper red) meets visual requirements
• Viable when higher power dissipation rating (100mW) accommodates thermal design

Compliance Basis: Both parts maintain Active product status and ROHS3 compliance, ensuring regulatory alignment for current manufacturing and deployment. Both components carry Moisture Sensitivity Level 1 (Unlimited) and REACH Unaffected status, indicating equivalent environmental and handling requirements.

Frequently Asked Questions (FAQ)

Q: Can LDS-C416RI directly replace SC43-11EWA in existing PCB designs?

A: Direct PCB replacement is feasible due to identical 14-DIP package configuration and matching physical dimensions within tolerance (0.310" vs. 0.307" depth). Pin-to-pin compatibility exists for common cathode 7-segment architecture. Circuit validation is required to confirm forward voltage (1.8V vs. 2.0V) and test current (10mA vs. 20mA) compatibility with existing current-limiting resistor values and power supply specifications.

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

A: The LDS-C416RI provides higher brightness (9.8mcd vs. 6.9mcd) and operates at a deeper red wavelength (660nm vs. 627nm). These differences may be perceptible in side-by-side comparison but remain within acceptable red spectrum range for standard 7-segment display applications. Application-specific visibility requirements determine whether these differences are functionally significant.

Q: Are there packaging differences between SC43-11EWA and LDS-C416RI?

A: SC43-11EWA is supplied in Tube packaging, while LDS-C416RI is supplied in Bulk packaging. Both use identical 14-DIP component format. Packaging difference affects handling, storage, and reel compatibility but does not impact electrical or mechanical component performance.

Q: What electrical parameters must be verified before substitution?

A: Forward voltage (2.0V vs. 1.8V), test current (20mA vs. 10mA), and power dissipation (75mW vs. 100mW) must be evaluated against circuit design specifications. Current-limiting resistor values and power supply voltage must accommodate the 0.2V forward voltage differential. Thermal design must account for the 25mW higher power dissipation in the substitute part.

Q: Are both parts suitable for new designs?

A: Both SC43-11EWA and LDS-C416RI maintain Active product status, confirming suitability for new design implementation. Selection between the two depends on specific electrical requirements, brightness specifications, and wavelength preferences defined in the application design.