LTD-5523AE Equivalent & Substitute Parts

Part Overview

The LTD-5523AE is a 2-character 7-segment LED display module manufactured by Lite-On Inc., featuring orange-red emitters in an 18-DIP package. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The display operates at 2V forward voltage with 20mA test current and provides 2.4mcd brightness output at 630nm wavelength peak.

Substiute Parts

LTD-5523AE

Lite-On Inc.In Stock: 1174LTD-5523AE Datasheet

Current PartRFQ

HDSP-523E

Broadcom LimitedIn Stock: 1326HDSP-523E Datasheet

MFR RecommendedRFQ

HDSP-5523

Broadcom LimitedIn Stock: 1552HDSP-5523 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LTD-5523AE are qualified based on the following criteria:

• Display Configuration: 2-character, 7-segment format with common cathode architecture
• Physical Compatibility: 0.56" digit size and 18-DIP package footprint
• Electrical Parameters: Forward voltage range 2.0V to 2.1V, test current 20mA
• Packaging Format: 18-DIP (0.600", 15.24mm) dual-in-line configuration
• Moisture Sensitivity: MSL 1 rating (unlimited moisture exposure tolerance)

The substitute parts HDSP-523E and HDSP-5523 meet these criteria while offering active product status and improved compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

HDSP-523E is the primary substitute for the LTD-5523AE. Both parts maintain identical physical dimensions (0.56" digit size, 18-DIP package) and electrical operating parameters (2.05V forward voltage, 20mA test current). The HDSP-523E carries active product status with ROHS3 compliance and REACH unaffected certification, ensuring long-term availability and regulatory alignment. The forward voltage differential of 0.05V falls within typical LED operating tolerances.

HDSP-5523 serves as an alternative substitute, offering active product status with equivalent compliance certifications. This part operates at 2.1V forward voltage and maintains the same 18-DIP package configuration. The HDSP-5523 belongs to the HDSP-552x series and provides comparable brightness output at 2.8mcd.

Both substitute parts eliminate obsolescence risk while maintaining pinout and package compatibility with the original LTD-5523AE design.

Frequently Asked Questions (FAQ)

Q: Can HDSP-523E and HDSP-5523 be used interchangeably with LTD-5523AE?

A: Both parts are electrically and mechanically compatible substitutes. They share identical 18-DIP package footprints, 0.56" digit sizes, common cathode configuration, and 20mA test current specifications. Forward voltage variations (2.05V and 2.1V respectively versus 2V) are within standard LED operating ranges and do not prevent direct substitution in circuit designs.

Q: What is the primary difference between HDSP-523E and HDSP-5523?

A: The HDSP-523E operates at 2.05V with 4mcd brightness and 62.5mW maximum power dissipation. The HDSP-5523 operates at 2.1V with 2.8mcd brightness and 105mW maximum power dissipation. Both maintain identical package and pinout specifications. Selection depends on brightness requirements and power budget constraints in the target application.

Q: Why is the LTD-5523AE classified as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. Substitute parts from active manufacturers ensure continued component availability for new designs and production continuity.

Q: Are there compliance differences between the original part and substitutes?

A: The HDSP-523E and HDSP-5523 both carry ROHS3 compliance and REACH unaffected certification. The original LTD-5523AE compliance status is not specified in available documentation. The substitute parts provide documented regulatory compliance suitable for modern manufacturing and export requirements.

Q: Does the color shift from orange-red to red affect circuit functionality?

A: Color differences reflect wavelength variations (630nm orange-red versus 640nm/635nm red). These are visual characteristics only and do not affect electrical functionality, pinout compatibility, or circuit operation. Application suitability depends on specific visual requirements in the end product.