LDD-A5642RI Equivalent & Substitute Parts

Part Overview

The LDD-A5642RI is a 2-character green 7-segment LED display module manufactured by Lumex Opto/Components Inc. This display operates as a common anode configuration with a 0.56" digit height and 18-DIP package format. The component is classified as Active product status with full RoHS3 compliance and REACH unaffected designation.

Substitute parts are identified when equivalent functional performance can be achieved within the allowed electrical and mechanical parameter ranges for this display category. The primary substitute identified is the LBP-602MA2 from Rohm Semiconductor, which maintains compatibility across critical interface parameters while offering alternative electrical characteristics.

Substiute Parts

LDD-A5642RI

Lumex Opto/Components Inc.In Stock: 991LDD-A5642RI Datasheet

Current PartRFQ

LBP-602MA2

Rohm SemiconductorIn Stock: 1015LBP-602MA2 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LDD-A5642RI is determined by strict adherence to the following critical parameters:

Mandatory Compatibility Parameters:

• Display Type: 7-Segment (fixed requirement)
• Number of Characters: 2 (fixed requirement)
• Common Pin Configuration: Common Anode (fixed requirement)
• Color: Green (fixed requirement)
• Package / Case: 18-DIP (0.600", 15.24mm) (fixed requirement)
• Digit/Alpha Size: 0.56" nominal (14.22mm to 14.30mm range acceptable)

Allowed Electrical Parameter Variation:

• Voltage - Forward (Vf) Typical: 1.9V to 2.2V range
• Current - Test: 10mA (fixed requirement)
• Millicandela Rating: May vary based on application requirements
• Wavelength - Peak: 565nm to 572nm range (green spectrum)

Compliance Requirements:

• RoHS3 Compliant (mandatory)
• REACH Unaffected (mandatory)
• Product Status: Active (mandatory)

The LBP-602MA2 meets all mandatory compatibility parameters and operates within the allowed electrical variation ranges, qualifying it as a direct substitute for the LDD-A5642RI in 18-DIP common anode green 7-segment 2-character display applications.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection: LDD-A5642RI

The LDD-A5642RI is the specified component and remains the primary selection for new designs. This part maintains Active product status with ROHS3 compliance and REACH unaffected designation. Moisture Sensitivity Level 1 (Unlimited) provides maximum handling flexibility during manufacturing and storage.

Substitute Selection: LBP-602MA2

The LBP-602MA2 qualifies as a direct substitute when the LDD-A5642RI is unavailable. Both components share identical display type, character count, common anode configuration, color, and 18-DIP package format. Both maintain Active product status and full ROHS3 compliance.

Key Differences Requiring Evaluation:

The LBP-602MA2 operates at 1.9V forward voltage compared to 2.2V for the LDD-A5642RI. This 0.3V reduction may require circuit design verification to ensure proper current limiting and display brightness in the target application.

The LBP-602MA2 exhibits significantly higher brightness (100mcd versus 3.9mcd) and higher maximum power dissipation (896mW versus 105mW). Applications requiring lower brightness or operating under power constraints must evaluate this difference.

Physical height differs by 2mm (19.00mm versus 17.00mm for LDD-A5642RI). Mechanical clearance verification is required for applications with tight vertical space constraints.

The LBP-602MA2 carries Moisture Sensitivity Level 3 (168 Hours) versus Level 1 (Unlimited) for the LDD-A5642RI. Storage and handling procedures must comply with MSL 3 requirements.

Both parts maintain identical 18-DIP pinout and common anode electrical interface, supporting direct socket substitution when electrical parameter differences are acceptable to the application.

Frequently Asked Questions (FAQ)

Q: Can the LBP-602MA2 replace the LDD-A5642RI in existing designs without circuit modification?

A: Direct socket replacement is possible due to identical 18-DIP pinout and common anode configuration. However, the LBP-602MA2 operates at 1.9V forward voltage versus 2.2V for the LDD-A5642RI. Circuit design verification is required to confirm that current limiting resistors and power supply voltage remain appropriate for the substitute part. The higher brightness (100mcd versus 3.9mcd) may also affect visual appearance in the application.

Q: What is the significance of the 2mm height difference between these parts?

A: The LBP-602MA2 measures 19.00mm in height compared to 17.00mm for the LDD-A5642RI. This 2mm difference may impact mechanical fit in applications with constrained vertical space, such as panel-mounted displays or compact enclosures. Physical clearance verification is required before substitution in space-limited applications.

Q: How do the brightness ratings affect substitution decisions?

A: The LBP-602MA2 provides 100mcd brightness compared to 3.9mcd for the LDD-A5642RI. This 25-fold brightness increase may be advantageous in high-ambient-light environments but may require brightness reduction through circuit design changes in applications designed for lower brightness. Visual appearance and user perception may differ between the two parts.

Q: What are the moisture sensitivity implications for the LBP-602MA2?

A: The LBP-602MA2 carries Moisture Sensitivity Level 3 (168 Hours) compared to Level 1 (Unlimited) for the LDD-A5642RI. MSL 3 classification requires that the component be stored in controlled humidity conditions and used within 168 hours of package opening. Manufacturing processes must include baking procedures per IPC standards. The LDD-A5642RI has no such restrictions.

Q: Are both parts suitable for new design applications?

A: Both the LDD-A5642RI and LBP-602MA2 maintain Active product status with full ROHS3 compliance and REACH unaffected designation. Either part is suitable for new designs. The LDD-A5642RI is recommended as the primary selection. The LBP-602MA2 is appropriate for new designs when its electrical characteristics (1.9V forward voltage, 100mcd brightness, 896mW maximum dissipation) and MSL 3 handling requirements align with application requirements.

Q: What package compatibility exists between these parts?

A: Both parts use 18-DIP (0.600", 15.24mm) package format with identical pinout. Socket and PCB footprint compatibility is confirmed. No package-related design changes are required for substitution.

Q: How do the wavelength specifications compare?

A: The LDD-A5642RI operates at 565nm peak wavelength while the LBP-602MA2 operates at 572nm. Both wavelengths fall within the green spectrum. The 7nm difference may result in slightly different color perception, with the LBP-602MA2 appearing slightly more yellow-green compared to the LDD-A5642RI.