LDD-C5642RI Equivalent & Substitute Parts

Part Overview

The LDD-C5642RI is a dual-character 7-segment LED display module manufactured by Lumex Opto/Components Inc. This green display operates as a common cathode configuration with a 0.56-inch character 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, particularly when original inventory becomes unavailable or when alternative sourcing is required for supply chain optimization.

Substiute Parts

LDD-C5642RI

Lumex Opto/Components Inc.In Stock: 839LDD-C5642RI Datasheet

Current PartRFQ

LBP-602MK2

ROHM SemiconductorIn Stock: 1481LBP-602MK2 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LDD-C5642RI is determined by strict alignment with the following critical parameters:

Mandatory Matching Parameters:

• Display Format: 7-Segment, 2-character configuration
• Common Pin Type: Common Cathode
• Color: Green
• Package Type: 18-DIP (0.600", 15.24mm)
• Character Height: 0.56 inches (±0.02 inches tolerance)
• RoHS3 Compliance: Required
• Moisture Sensitivity Level: 1 (Unlimited)

Allowable Parameter Variance:

• Forward Voltage (Vf): 1.9V to 2.2V range
• Test Current: 10mA to 20mA range
• Wavelength - Peak: 565nm to 572nm range
• Power Dissipation (Max): Up to 105mW
• Physical Dimensions: Height variance within 0.08 inches (2.00mm)

The LBP-602MK2 manufactured by ROHM Semiconductor meets all mandatory matching criteria and operates within the allowable electrical parameter variance, qualifying it as a direct substitute for the LDD-C5642RI in 18-DIP common cathode green 7-segment display applications.

Parameter Comparison

Engineering Selection Recommendations

LDD-C5642RI (Primary Selection) The LDD-C5642RI remains the primary component choice when original Lumex inventory is available. This part maintains Active product status with confirmed RoHS3 compliance and REACH unaffected designation. The component is suitable for applications requiring the specified 2.2V forward voltage and 10mA test current parameters.

LBP-602MK2 (Substitute Selection) The LBP-602MK2 qualifies as a direct substitute when LDD-C5642RI availability is constrained. This ROHM component maintains identical package configuration (18-DIP), display format (7-segment, 2-character), and common cathode topology. The LBP-602MK2 operates within the allowable electrical parameter variance with forward voltage of 1.9V and test current of 20mA. Both components carry equivalent compliance certifications: RoHS3 compliant, REACH unaffected, and Moisture Sensitivity Level 1 (Unlimited).

Critical Consideration for PCB Integration The LBP-602MK2 exhibits a physical height variance of 0.079 inches (2.00mm) compared to the LDD-C5642RI. This dimension difference must be evaluated against PCB layout constraints, mechanical clearances, and visual alignment requirements in the target application. The substitute part is electrically compatible within the specified parameter ranges but requires mechanical fit verification before production implementation.

Frequently Asked Questions (FAQ)

Q: Can the LBP-602MK2 be used as a direct pin-for-pin replacement for the LDD-C5642RI?

A: Yes. Both components utilize the 18-DIP (0.600", 15.24mm) package format with identical pinout configuration for common cathode 7-segment display operation. Pin-level compatibility is confirmed.

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

A: The LDD-C5642RI operates at 2.2V forward voltage with 10mA test current, while the LBP-602MK2 operates at 1.9V forward voltage with 20mA test current. Both values fall within the allowable parameter variance for this display category. The LBP-602MK2 also provides higher brightness output (100mcd versus 3.9mcd) and lower maximum power dissipation (56mW versus 105mW).

Q: Are there any compliance or regulatory differences between these parts?

A: No. Both the LDD-C5642RI and LBP-602MK2 carry identical compliance designations: RoHS3 compliant, REACH unaffected, Moisture Sensitivity Level 1 (Unlimited), and EAR99 ECCN classification.

Q: What is the significance of the 0.079-inch height difference?

A: The LBP-602MK2 is 0.079 inches (2.00mm) taller than the LDD-C5642RI. This variance must be evaluated against PCB layout constraints, mechanical clearances to adjacent components, and visual alignment requirements. Mechanical fit verification is required before production use.

Q: Can circuit design parameters remain unchanged when substituting the LBP-602MK2 for the LDD-C5642RI?

A: Circuit parameters must be re-evaluated. The lower forward voltage (1.9V versus 2.2V) and higher test current (20mA versus 10mA) of the LBP-602MK2 require verification of current-limiting resistor values and power supply capability. The higher brightness output (100mcd versus 3.9mcd) may require adjustment of drive current to maintain consistent visual performance.

Q: What is the wavelength difference between these displays?

A: The LDD-C5642RI emits at 565nm peak wavelength, while the LBP-602MK2 emits at 572nm peak wavelength. Both wavelengths fall within the green spectrum range and are within the allowable 565nm–572nm variance for this display category. Visual color perception difference is minimal.

Q: Are both parts available in equivalent quantities?

A: Current inventory status shows LDD-C5642RI at 750 pieces and LBP-602MK2 at 1,386 pieces. Availability may vary based on current sourcing conditions and supply chain status.