LTP-537HR 16-Segment Alphanumeric LED Display - Equivalent & Substitute Parts

Part Overview

The LTP-537HR is a 16-segment alphanumeric LED display module manufactured by Lite-On Inc., designed for single-character alphanumeric display applications. This component features a common cathode configuration with a 0.50-inch character height in a standard 18-DIP package. The product is currently classified as obsolete, making identification of functionally equivalent substitute parts essential for ongoing design support and component procurement.

Substiute Parts

LTP-537HR

Lite-On Inc.In Stock: 274034LTP-537HR Datasheet

Current PartRFQ

PSC05-11EWA

KingbrightIn Stock: 887PSC05-11EWA Datasheet

DirectRFQ

PSC05-12EWA

KingbrightIn Stock: 1057PSC05-12EWA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LTP-537HR are identified based on strict electrical and mechanical compatibility criteria. The following parameters must match or remain within acceptable operating ranges for direct substitution:

• Display Type: 16-Segment, Alphanumeric configuration
• Number of Characters: Single character (1)
• Character Height: 0.50" (12.70mm)
• Physical Dimensions: 0.984" H x 0.630" W x 0.374" D (25.00mm x 16.00mm x 9.50mm)
• Common Pin Configuration: Common Cathode
• Color: Red
• Forward Voltage (Typ): 2V
• Test Current: 20mA
• Power Dissipation (Max): 75mW
• Package Type: 18-DIP (0.500", 12.70mm)

The substitute parts identified below satisfy all mandatory electrical and mechanical parameters. Variations in millicandela rating and peak wavelength remain within the acceptable range for red LED displays and do not affect circuit-level compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both Kingbright substitute parts (PSC05-11EWA and PSC05-12EWA) provide direct functional equivalence to the obsolete LTP-537HR. Selection between these options is based on product availability and compliance status:

PSC05-11EWA is available with 815 units in stock and carries RoHS3 compliance and REACH unaffected status.

PSC05-12EWA is the manufacturer-recommended substitute, available with 1001 units in stock, and carries identical RoHS3 compliance and REACH unaffected status.

Both parts maintain identical electrical specifications and physical form factors. The increased millicandela rating (7.6mcd versus 2.2mcd) and slightly different peak wavelength (627nm versus 623nm) represent improvements in brightness and color consistency without affecting circuit compatibility or pin configuration.

Frequently Asked Questions (FAQ)

Q: Can PSC05-11EWA and PSC05-12EWA be used interchangeably with LTP-537HR?

A: Yes. Both parts satisfy all mandatory electrical and mechanical parameters: 16-segment alphanumeric display, single character, 0.50-inch height, common cathode configuration, 2V forward voltage, 20mA test current, 75mW maximum power dissipation, and 18-DIP package. Pin-to-pin compatibility is maintained.

Q: What is the difference between PSC05-11EWA and PSC05-12EWA?

A: Both parts are electrically and mechanically identical. The primary difference is inventory availability and manufacturer recommendation status. PSC05-12EWA is the manufacturer-recommended substitute with higher stock levels.

Q: Does the higher millicandela rating of the substitute parts affect circuit design?

A: No. The increased brightness (7.6mcd versus 2.2mcd) does not alter electrical operating parameters. Forward voltage, test current, and power dissipation remain identical. Existing circuit designs require no modification.

Q: Are the substitute parts RoHS and REACH compliant?

A: Yes. Both PSC05-11EWA and PSC05-12EWA are RoHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: Will the 18-DIP package footprint remain the same?

A: Yes. All parts use the identical 18-DIP (0.500", 12.70mm) package with matching physical dimensions of 0.984" H x 0.630" W x 0.374" D. PCB layouts and socket compatibility are preserved.