LDS-A3902RI Equivalent & Substitute Parts

Part Overview

The LDS-A3902RI is a single-character 7-segment LED display module manufactured by Lumex Opto/Components Inc. This green display operates with common anode configuration and is housed in a 10-DIP package. The component is classified as Active product status and maintains full RoHS3 compliance. Substitute parts are identified when equivalent mechanical packaging, electrical interface topology, and display characteristics are maintained across alternative manufacturers while accommodating application-specific current and brightness requirements.

Substiute Parts

LDS-A3902RI

Lumex Opto/Components Inc.In Stock: 886LDS-A3902RI Datasheet

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SA39-11GWA

KingbrightIn Stock: 1235SA39-11GWA Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LDS-A3902RI is determined by strict adherence to the following parameters:

Mandatory Matching Parameters:

• Display Type: 7-Segment
• Number of Characters: 1
• Common Pin Configuration: Common Anode
• Color: Green
• Digit/Alpha Size: 0.39" (10.00mm)
• Package / Case: 10-DIP (0.300", 7.62mm)
• Physical Dimensions: 0.512" H x 0.394" W x 0.276" D
• Voltage - Forward (Vf) (Typ): 2.2V
• Wavelength - Peak: 565nm

Variable Parameters (Application-Dependent):

• Current - Test: May vary based on circuit design requirements
• Millicandela Rating: May vary based on brightness requirements
• Power Dissipation (Max): Dependent on current specification

The SA39-11GWA from Kingbright satisfies all mandatory matching parameters and maintains electrical and mechanical compatibility with the LDS-A3902RI within standard circuit design tolerances.

Parameter Comparison

Engineering Selection Recommendations

Both the LDS-A3902RI and SA39-11GWA maintain Active product status and full compliance with RoHS3 and REACH regulatory requirements. Selection between these components is determined by application-specific current and brightness requirements:

LDS-A3902RI Selection Criteria:

• Applications requiring 10mA test current specification
• Designs with lower brightness requirements (2.5mcd)
• Circuits optimized for 105mW maximum power dissipation

SA39-11GWA Selection Criteria:

• Applications requiring 20mA test current specification
• Designs with higher brightness requirements (6.4mcd)
• Circuits optimized for 62.5mW maximum power dissipation

Both components share identical mechanical packaging, electrical interface topology (common anode, 10-DIP), forward voltage (2.2V), and wavelength characteristics (565nm green). Component selection is based on circuit current budget and required display brightness within the application design envelope.

Frequently Asked Questions (FAQ)

Q: Can SA39-11GWA directly replace LDS-A3902RI in existing PCB designs?

A: Yes. Both components utilize identical 10-DIP (0.300", 7.62mm) package geometry and pinout configuration. Physical board-level substitution is direct. Circuit current limiting resistor values may require adjustment to accommodate the 20mA test current specification of the SA39-11GWA versus the 10mA specification of the LDS-A3902RI.

Q: What is the primary electrical difference between these two parts?

A: The SA39-11GWA operates at 20mA test current with 6.4mcd brightness rating, while the LDS-A3902RI operates at 10mA test current with 2.5mcd brightness rating. Both maintain identical 2.2V forward voltage and 565nm wavelength characteristics.

Q: Are both parts RoHS3 compliant?

A: Yes. Both LDS-A3902RI and SA39-11GWA are ROHS3 Compliant with MSL 1 (Unlimited) moisture sensitivity rating and REACH Unaffected status.

Q: What packaging formats are available for these components?

A: LDS-A3902RI is available in standard packaging format. SA39-11GWA is supplied in Tube packaging. Both utilize identical 10-DIP (0.300", 7.62mm) case configuration.

Q: Are there any wavelength or color differences between these substitutes?

A: No. Both components are green 7-segment displays with identical 565nm peak wavelength specification.