LDD-E5402RI Equivalent & Substitute Parts

Part Overview

The LDD-E5402RI is a 14-segment alphanumeric LED display module manufactured by Lumex Opto/Components Inc. This component is a 2-character green display with common anode configuration, designed for applications requiring alphanumeric character representation. The device operates at 2.2V forward voltage with a 10mA test current and features a 0.54" character size in an 18-DIP package format.

The product maintains Active status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when equivalent display functionality, package compatibility, and electrical operating parameters align within acceptable engineering tolerances for the application.

Substiute Parts

LDD-E5402RI

Lumex Opto/Components Inc.In Stock: 910LDD-E5402RI Datasheet

Current PartRFQ

LTP-3786G

Lite-On Inc.In Stock: 1792LTP-3786G Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LDD-E5402RI are identified based on the following critical parameters that must align for functional equivalence:

Display Configuration Match:

• 14-segment alphanumeric display type
• 2-character display format
• 0.54" character size (13.72mm)
• Common anode pin configuration
• Green color emission (565nm wavelength)

Electrical Operating Parameters:

• Forward voltage within acceptable range (2.1V to 2.2V typical)
• Test current specification (10mA to 20mA)
• Package format: 18-DIP

Compliance & Certification:

• RoHS3 compliance status
• ECCN classification (EAR99)
• HTSUS commodity code alignment

The LTP-3786G from Lite-On Inc. satisfies all critical substitution criteria. Both devices share identical display type, character count, size, configuration, and color specification. Electrical parameters remain within compatible operating ranges, and both maintain equivalent regulatory compliance status.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection: LDD-E5402RI

The LDD-E5402RI remains the primary component choice when available. This Lumex device is Active status with 862 units in current inventory. The component meets all RoHS3 requirements and carries unlimited moisture sensitivity rating suitable for standard industrial applications.

Substitute Selection: LTP-3786G

The LTP-3786G from Lite-On Inc. serves as a direct functional equivalent when LDD-E5402RI availability is constrained. This substitute maintains Active product status with 1731 units in inventory. Key advantages include lower maximum power dissipation (75mW vs. 105mW) and slightly lower forward voltage (2.1V vs. 2.2V), which may reduce thermal load in power-sensitive applications.

Both devices carry identical RoHS3 compliance, ECCN classification (EAR99), and HTSUS commodity coding (8541.41.0000). Physical dimensions remain within acceptable tolerance for standard 18-DIP socket mounting. The 18-DIP package format ensures direct pin-compatible substitution without circuit board modification.

Selection between these parts should be based on availability, lead time requirements, and inventory management priorities. Both components satisfy equivalent electrical and mechanical specifications for 14-segment alphanumeric display applications.

Frequently Asked Questions (FAQ)

Q: Can LTP-3786G replace LDD-E5402RI in existing designs without circuit modification?

A: Yes. Both devices use identical 18-DIP package format with common anode configuration. Pin assignments and electrical operating parameters are compatible. No circuit board redesign is required for substitution.

Q: What is the voltage difference between these parts, and does it affect circuit design?

A: The LDD-E5402RI operates at 2.2V typical forward voltage, while the LTP-3786G operates at 2.1V. This 0.1V difference is within standard design tolerance for LED display applications and does not require circuit recalculation for typical current-limiting resistor networks.

Q: Are the physical dimensions identical between LDD-E5402RI and LTP-3786G?

A: Dimensions are nearly identical with minor tolerance variations. LDD-E5402RI measures 0.827" H x 0.984" W x 0.307" D, while LTP-3786G measures 0.833" H x 0.992" W x 0.307" D. These differences (0.006" maximum) fall within standard mechanical tolerance for 18-DIP package mounting and do not affect PCB layout compatibility.

Q: What is the difference in brightness between these displays?

A: The LDD-E5402RI provides 2.5mcd brightness rating, while the LTP-3786G provides 2.3mcd. Both operate at 565nm peak wavelength (green). The brightness difference is approximately 8% and remains imperceptible in most visual applications.

Q: Do both parts have identical compliance certifications?

A: Yes. Both LDD-E5402RI and LTP-3786G carry RoHS3 compliance, EAR99 ECCN classification, and 8541.41.0000 HTSUS commodity code. Moisture sensitivity level is identical (MSL 1 - Unlimited) for both devices.

Q: Which part has lower power consumption?

A: The LTP-3786G has lower maximum power dissipation at 75mW compared to 105mW for the LDD-E5402RI. This represents approximately 29% lower thermal load, which may be advantageous in thermally constrained applications.

Q: Are both parts currently in active production?

A: Yes. Both LDD-E5402RI and LTP-3786G maintain Active product status. Current inventory shows 862 units of LDD-E5402RI and 1731 units of LTP-3786G available.