LDD-F5404RI Equivalent & Substitute Parts

Part Overview

The LDD-F5404RI is a 14-segment alphanumeric LED display module manufactured by Lumex Opto/Components Inc. This dual-character red display operates as a common cathode 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 modules share the same functional characteristics: 14-segment alphanumeric format, dual-character configuration, common cathode architecture, red color output, 18-DIP packaging, and compatible electrical operating parameters. Identifying qualified substitutes ensures design flexibility and supply chain continuity.

Substiute Parts

LDD-F5404RI

Lumex Opto/Components Inc.In Stock: 719LDD-F5404RI Datasheet

Current PartRFQ

HDSP-A27C

Broadcom LimitedIn Stock: 2296HDSP-A27C Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LDD-F5404RI is determined by the following mandatory parameters:

Display Architecture: 14-segment alphanumeric format with dual-character configuration Pin Configuration: Common cathode topology with 18-DIP package footprint Optical Characteristics: Red color output at 635nm peak wavelength Electrical Operating Range: Forward voltage between 1.9V and 2V; test current between 10mA and 20mA Compliance & Status: ROHS3 compliant, active product status, REACH unaffected

The substitute part HDSP-A27C meets all mandatory substitution criteria. Both devices share identical display format, character count, common cathode configuration, package type, and color specification. Electrical parameters fall within compatible operating ranges, and both maintain equivalent regulatory compliance.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection (LDD-F5404RI): Select this part when the design specifies Lumex Opto/Components Inc. as the preferred manufacturer, or when the lower test current specification (10mA) is a design requirement. This part maintains active product status and full ROHS3 compliance.

Substitute Selection (HDSP-A27C): Select this part when supply availability of the LDD-F5404RI is constrained or when higher brightness output (18mcd ~ 36mcd versus 2mcd) is beneficial to the application. The HDSP-A27C maintains identical package footprint, display format, and regulatory compliance. The forward voltage is 0.1V lower (1.9V versus 2V), and test current is doubled (20mA versus 10mA), both within acceptable operating parameters for common cathode 14-segment display applications.

Both parts are active products with ROHS3 compliance and REACH unaffected status, ensuring long-term availability and regulatory alignment.

Frequently Asked Questions (FAQ)

Q: Can HDSP-A27C directly replace LDD-F5404RI in existing PCB designs?

A: Yes. Both parts share identical 18-DIP package footprint, pin configuration (common cathode), and display format (14-segment, dual-character). PCB layout compatibility is confirmed. Circuit design must accommodate the HDSP-A27C's lower forward voltage (1.9V) and higher test current (20mA) within the power supply and current-limiting resistor specifications.

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

A: The LDD-F5404RI operates at 2V forward voltage with 10mA test current. The HDSP-A27C operates at 1.9V forward voltage with 20mA test current. Both specifications fall within standard operating ranges for common cathode LED display modules. The HDSP-A27C delivers significantly higher brightness (18mcd ~ 36mcd) compared to the LDD-F5404RI (2mcd).

Q: Are there dimensional differences that affect mechanical fit?

A: Minor dimensional variations exist. The LDD-F5404RI measures 0.984" width and 0.307" depth. The HDSP-A27C measures 0.992" width and 0.276" depth. Height is identical at 0.827". These variations are within typical PCB mounting tolerances for 18-DIP packages. Verify mechanical clearance in confined spaces.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both the LDD-F5404RI and HDSP-A27C are ROHS3 compliant, REACH unaffected, and classified as active products. Regulatory compliance is equivalent.

Q: Which part should be selected for new designs?

A: Selection depends on application requirements. For lower power consumption, select LDD-F5404RI (10mA). For higher brightness output, select HDSP-A27C (18mcd ~ 36mcd). Both are active products suitable for new designs. Verify component availability with your supplier before finalizing design selection.