LDD-E5404RI Equivalent & Substitute Parts

Part Overview

The LDD-E5404RI is a 14-segment alphanumeric LED display module manufactured by Lumex Opto/Components Inc. This dual-character red display operates as a common anode configuration and is housed in an 18-DIP package. The device is classified as Active product status and is RoHS3 compliant. 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-E5404RI

Lumex Opto/Components Inc.In Stock: 831LDD-E5404RI Datasheet

Current PartRFQ

HDSP-A22C

Broadcom LimitedIn Stock: 1782HDSP-A22C Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LDD-E5404RI is determined by the following critical parameters:

Display Configuration Match:

• 14-segment alphanumeric display type
• Dual-character (2-character) format
• 0.54" character size (13.72mm)
• Common anode pin configuration
• Red color with 635nm peak wavelength

Package Compatibility:

• 18-DIP package with 0.600" (15.24mm) pitch
• Physical dimensions within acceptable tolerance for PCB mounting

Electrical Operating Range:

• Forward voltage (Vf) within compatible range for series resistor design
• Current consumption compatible with standard driver circuits
• Peak wavelength consistency ensures color matching

The HDSP-A22C from Broadcom Limited meets all critical substitution criteria. Both devices share identical display type, character count, size, common anode configuration, color, wavelength, package type, and DIP pitch. Electrical parameters (Vf and current) fall within acceptable design tolerances for typical LED display driver applications.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection - LDD-E5404RI: The LDD-E5404RI remains the primary component choice when specified in original designs. This device is Active status, RoHS3 compliant, and carries MSL 1 rating indicating unlimited shelf life. The part is in stock with 814 units available.

Substitute Selection - HDSP-A22C: The HDSP-A22C is a qualified substitute when LDD-E5404RI availability is constrained. Both devices maintain Active product status and full RoHS3 compliance. The HDSP-A22C provides higher brightness (18mcd ~ 36mcd versus 2mcd) and operates at slightly lower forward voltage (1.9V versus 2V). The substitute carries identical MSL 1 rating and REACH unaffected status. Inventory availability is higher at 1709 units.

Compliance Verification: Both parts are ROHS3 compliant, REACH unaffected, and carry EAR99 ECCN classification. No additional regulatory documentation is required for substitution in applications where the original part was approved.

Frequently Asked Questions (FAQ)

Q: Can HDSP-A22C directly replace LDD-E5404RI in existing PCB designs?

A: Yes. Both devices use identical 18-DIP package with 0.600" (15.24mm) pitch. Pin configuration is common anode in both cases. Physical dimensions are within acceptable tolerance (width difference of 0.008", depth difference of 0.031"). Direct socket substitution is supported.

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

A: The HDSP-A22C operates at 1.9V forward voltage compared to 2V for the LDD-E5404RI. Test current is 20mA versus 10mA. The HDSP-A22C provides significantly higher brightness at 18mcd ~ 36mcd versus 2mcd. Series resistor values in driver circuits may require adjustment to accommodate the lower forward voltage and higher current rating.

Q: Are both parts suitable for new designs?

A: Yes. Both LDD-E5404RI and HDSP-A22C are Active status products. Either part is appropriate for new designs. Selection should be based on brightness requirements, power budget, and availability.

Q: Do these parts require different driver circuits?

A: Both parts use common anode configuration and 18-DIP pinout. Standard 14-segment LED display drivers are compatible with both. However, series resistor calculations must account for the different forward voltage and current specifications of each device.

Q: What is the difference in physical size between these displays?

A: Height is identical at 0.827". Width differs by 0.008" (0.992" versus 0.984"). Depth differs by 0.031" (0.276" versus 0.307"). These differences are within standard PCB layout tolerances for DIP components.

Q: Are both parts RoHS compliant?

A: Yes. Both LDD-E5404RI and HDSP-A22C are ROHS3 compliant and REACH unaffected. No additional environmental documentation is required.

Q: Which part offers better brightness?

A: The HDSP-A22C provides 18mcd ~ 36mcd brightness compared to 2mcd for the LDD-E5404RI. The Broadcom device is approximately 9 to 18 times brighter, making it suitable for applications requiring higher visibility.