LDD-HTC512RI Equivalent & Substitute Parts

Part Overview

The LDD-HTC512RI is a dual-character 7-segment LED display module manufactured by Lumex Opto/Components Inc. This green display operates with common cathode configuration and is designed for numeric and alphanumeric applications requiring 0.56-inch character height. The part is currently in active production status with 781 units in stock inventory.

Substitute parts are identified when equivalent display modules share identical mechanical packaging, electrical interface topology, and functional form factor while maintaining compatibility with the 18-DIP (0.600", 15.24mm) footprint. Alternative sources become necessary for supply chain continuity, extended lead time mitigation, or design flexibility across manufacturing partners.

Substiute Parts

LDD-HTC512RI

Lumex Opto/Components Inc.In Stock: 884LDD-HTC512RI Datasheet

Current PartRFQ

LBP-602MK2

ROHM SemiconductorIn Stock: 1481LBP-602MK2 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LDD-HTC512RI are identified based on strict equivalence across the following critical parameters:

Mechanical Compatibility Requirements:

• Identical package type: 18-DIP (0.600", 15.24mm)
• Matching physical dimensions: 0.748" H × 0.984" W × 0.315" D
• Identical character height: 0.56"
• Identical number of characters: 2

Electrical Interface Requirements:

• Display type: 7-Segment
• Common pin configuration: Common Cathode
• Color: Green

Regulatory & Environmental Requirements:

• RoHS3 Compliance
• Moisture Sensitivity Level 1 (Unlimited)
• Active product status

The LBP-602MK2 manufactured by ROHM Semiconductor meets all critical mechanical and electrical interface requirements. Variations in forward voltage (1.9V vs. 2.2V), test current (20mA vs. 10mA), and optical characteristics (wavelength, millicandela rating) are within acceptable substitution parameters for common cathode 7-segment display applications, provided circuit design accommodates the specified electrical operating point.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection (LDD-HTC512RI): The Lumex LDD-HTC512RI is the specified component for applications requiring the exact electrical operating point of 2.2V forward voltage and 10mA test current. This part maintains active production status with established supply inventory (781 units in stock) and full ROHS3 and REACH compliance certification.

Substitute Selection (LBP-602MK2): The ROHM LBP-602MK2 is a direct mechanical and electrical interface substitute suitable for applications where the following conditions are met:

• Circuit design accommodates 1.9V forward voltage operation (0.3V lower than primary part)
• Circuit design accommodates 20mA test current operation (10mA higher than primary part)
• Higher brightness output (100mcd vs. 3.9mcd) is acceptable or beneficial for the application
• Wavelength shift from 565nm to 572nm (green spectrum) does not impact color matching requirements

Both parts maintain identical RoHS3 compliance, REACH unaffected status, and Moisture Sensitivity Level 1 classification. Both are active production components with established supply channels. The ROHM substitute offers higher brightness and lower maximum power dissipation, making it suitable for battery-powered or brightness-critical applications where the electrical parameter differences are accommodated in circuit design.

Frequently Asked Questions (FAQ)

Q: Can the LBP-602MK2 be used as a direct drop-in replacement for the LDD-HTC512RI?

A: The LBP-602MK2 is mechanically and electrically compatible at the interface level (18-DIP package, common cathode configuration, 2-character 7-segment display). However, circuit design must accommodate the lower forward voltage (1.9V vs. 2.2V) and higher test current (20mA vs. 10mA). Direct substitution without circuit modification is not recommended.

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

A: The primary differences are forward voltage (1.9V vs. 2.2V), test current (20mA vs. 10mA), brightness (100mcd vs. 3.9mcd), and peak wavelength (572nm vs. 565nm). All other parameters including package, dimensions, character count, display type, and common cathode configuration are identical.

Q: Are both parts RoHS3 compliant?

A: Yes. Both the LDD-HTC512RI and LBP-602MK2 are ROHS3 Compliant with Moisture Sensitivity Level 1 (Unlimited) classification and REACH Unaffected status.

Q: Which part should I select for a new design?

A: Selection depends on circuit design requirements. If the design operates at 2.2V with 10mA current budget, use the LDD-HTC512RI. If the design can accommodate 1.9V operation with 20mA current and benefits from higher brightness (100mcd), the LBP-602MK2 is suitable. Both parts are in active production with established supply.

Q: Do these parts have identical physical dimensions?

A: Yes. Both parts share identical mechanical dimensions of 0.748" H × 0.984" W × 0.315" D (19.00mm × 25.00mm × 8.00mm) and identical 18-DIP (0.600", 15.24mm) package footprint. Character height is 0.56" for both parts.

Q: What is the inventory status for each part?

A: The LDD-HTC512RI has 781 units in stock. The LBP-602MK2 has 1386 units in stock. Both are listed as active products with established supply channels.