LN524GA 7-Segment LED Display - Equivalent & Substitute Parts

Part Overview

The Panasonic LN524GA is a dual-character, 7-segment LED display module with 0.43" digit height, common anode configuration, and green color output. This component is classified as obsolete, making equivalent substitute parts necessary for new designs, maintenance applications, and production continuity. The display operates at 2.2V forward voltage with 20mA test current and is packaged in an 18-DIP configuration.

Substiute Parts

LN524GA

Panasonic Electronic ComponentsIn Stock: 1119LN524GA Datasheet

Current PartRFQ

LDD-A5002RI

Lumex Opto/Components Inc.In Stock: 976LDD-A5002RI Datasheet

SimilarRFQ

LTD-6410G

Lite-On Inc.In Stock: 698LTD-6410G Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LN524GA are selected based on the following critical parameters that determine functional compatibility:

Primary Compatibility Criteria:

• Number of Characters: 2 (fixed requirement)
• Display Type: 7-Segment (fixed requirement)
• Common Pin Configuration: Common Anode (fixed requirement)
• Color: Green (fixed requirement)
• Package / Case: 18-DIP (fixed requirement)
• Wavelength - Peak: 565nm (fixed requirement)

Secondary Compatibility Parameters (allowable variation):

• Digit/Alpha Size: Larger sizes acceptable with circuit board layout verification
• Voltage - Forward (Vf): Range 2.1V to 2.2V acceptable
• Current - Test: 10mA to 20mA acceptable with current-limiting resistor adjustment
• Millicandela Rating: Variation acceptable based on application brightness requirements
• Power Dissipation: Variation acceptable within thermal design limits

All substitute parts listed maintain the core electrical and mechanical specifications required for direct functional replacement in 18-DIP socket applications.

Parameter Comparison

Engineering Selection Recommendations

LDD-A5002RI (Lumex Opto/Components Inc.): This substitute offers ROHS3 compliance and active product status. The 0.50" digit size represents a 16% increase over the original LN524GA. Forward voltage matches at 2.2V. Current requirement is reduced to 10mA, requiring adjustment of current-limiting resistor values in the circuit. Brightness output increases to 3.9mcd. Power dissipation increases to 105mW. Suitable for applications where increased brightness and reduced current draw are acceptable, with circuit redesign for resistor values.

LTD-6410G (Lite-On Inc.): This substitute provides ROHS3 compliance and active product status. The 0.56" digit size represents a 30% increase over the original LN524GA. Forward voltage is slightly lower at 2.1V. Current requirement matches at 20mA, minimizing circuit modifications. Brightness output is 2.4mcd. Power dissipation is reduced to 75mW. Suitable for applications where minimal circuit modification is required and larger digit display is acceptable. REACH status is affected.

Both substitutes maintain 18-DIP packaging, common anode configuration, green color, and 565nm wavelength, ensuring functional compatibility with the original LN524GA in socket-based applications.

Frequently Asked Questions (FAQ)

Q: Can the LDD-A5002RI be used as a direct replacement for the LN524GA without circuit modifications?

A: The LDD-A5002RI is electrically compatible but requires current-limiting resistor adjustment. The test current is 10mA versus the original 20mA. Existing resistor values designed for 20mA operation must be recalculated for 10mA to maintain proper display brightness and LED lifespan.

Q: What is the primary difference between the LDD-A5002RI and LTD-6410G substitutes?

A: The LDD-A5002RI requires current-limiting resistor redesign (10mA vs. 20mA) but offers higher brightness (3.9mcd). The LTD-6410G maintains the 20mA current requirement, minimizing circuit changes, with moderate brightness (2.4mcd). Both offer larger digit sizes than the original.

Q: Are both substitute parts compatible with the 18-DIP socket used by the LN524GA?

A: Yes. Both LDD-A5002RI and LTD-6410G use 18-DIP packaging with 0.600" (15.24mm) pin spacing, compatible with standard 18-DIP sockets. Physical dimensions are slightly larger due to increased digit size, but socket compatibility is maintained.

Q: Does the increased digit size of the substitutes affect circuit board layout?

A: The substitutes have larger overall dimensions. LDD-A5002RI is 0.984" W x 0.315" D; LTD-6410G is 0.984" W x 0.315" D, compared to the original 0.945" W x 0.256" D. Verify available board space before selection. Pin footprint remains identical for 18-DIP configuration.

Q: What is the compliance difference between the LN524GA and its substitutes?

A: The original LN524GA is RoHS non-compliant and obsolete. Both substitutes are ROHS3 compliant and active products. The LTD-6410G has affected REACH status, while the LDD-A5002RI is REACH unaffected. Select based on regulatory requirements for your application.

Q: Can I use the LTD-6410G without any circuit modifications?

A: The LTD-6410G maintains 20mA test current and 2.1V forward voltage, very close to the original 2.2V specification. Existing current-limiting resistor values require minimal or no adjustment. However, verify forward voltage tolerance in your specific circuit design, as 0.1V variation may affect brightness slightly.