LTP-3784Y-01 Equivalent & Substitute Parts

Part Overview

The LTP-3784Y-01 is a 14-segment alphanumeric LED display module manufactured by Lite-On Inc., designed for applications requiring dual-character yellow numeric and alphabetic display capability. This component operates as a common cathode configuration with a 0.54" character size and 18-DIP package format. The product is currently classified as obsolete, making identification of functionally equivalent substitute components essential for ongoing system support, maintenance, and new design implementations where legacy compatibility is required.

Substiute Parts

LTP-3784Y-01

Lite-On Inc.In Stock: 695LTP-3784Y-01 Datasheet

Current PartRFQ

XAUY14C2

SunLEDIn Stock: 856XAUY14C2 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LTP-3784Y-01 is determined by strict alignment across the following critical parameters:

Mandatory Matching Parameters:

• Number of Characters: 2
• Display Type: 14-Segment, Alphanumeric
• Common Pin Configuration: Common Cathode
• Character Size: 0.54" (13.72mm)
• Color: Yellow
• Package / Case: 18-DIP (0.600", 15.24mm)

Allowable Parameter Variance: Substitute components may exhibit minor variations in forward voltage (Vf), test current, millicandela rating, wavelength peak, and power dissipation, provided the component maintains functional compatibility within standard circuit design tolerances and does not exceed the electrical stress limits of the original application.

The XAUY14C2 manufactured by SunLED meets all mandatory matching parameters and qualifies as a direct substitute for the LTP-3784Y-01.

Parameter Comparison

Engineering Selection Recommendations

The XAUY14C2 from SunLED is the qualified substitute for the obsolete LTP-3784Y-01. Selection of this component is supported by the following engineering factors:

Product Status: The XAUY14C2 maintains active product status, ensuring continued availability and manufacturing support, whereas the LTP-3784Y-01 is obsolete and subject to supply discontinuation.

Compliance and Certifications: The XAUY14C2 is RoHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component procurement and environmental standards.

Electrical Compatibility: The XAUY14C2 operates at a lower forward voltage (1.95V vs. 2.1V) and reduced test current (10mA vs. 20mA), resulting in lower power dissipation per segment. These characteristics are compatible with standard circuit designs and do not introduce functional incompatibility. The wavelength variance of 5nm (590nm vs. 585nm) remains within the yellow LED spectrum and is imperceptible to human vision.

Mechanical Compatibility: Physical dimensions are within manufacturing tolerance, and the 18-DIP package footprint is identical, ensuring direct PCB compatibility without layout modification.

Frequently Asked Questions (FAQ)

Q: Can the XAUY14C2 be used as a direct replacement for the LTP-3784Y-01 in existing circuit designs?

A: Yes. The XAUY14C2 is mechanically and electrically compatible with the LTP-3784Y-01. Both components share identical package format, pin configuration, character count, display type, and color specification. The lower forward voltage and test current of the XAUY14C2 do not create incompatibility; they reduce power consumption and thermal stress on the component.

Q: What is the significance of the forward voltage difference between the two parts?

A: The LTP-3784Y-01 operates at 2.1V typical forward voltage, while the XAUY14C2 operates at 1.95V. This 0.15V difference is within standard LED manufacturing tolerance and does not affect circuit functionality. Existing current-limiting resistor values will continue to operate within acceptable parameters.

Q: Are there any differences in brightness between the LTP-3784Y-01 and XAUY14C2?

A: The millicandela ratings differ slightly (2.3mcd vs. 2mcd), representing a 13% reduction in the XAUY14C2. This difference is minimal and typically imperceptible in applications where the display is viewed under standard ambient lighting conditions. If maximum brightness is critical to the application, circuit design adjustments to test current may be evaluated.

Q: What is the wavelength difference, and does it affect color perception?

A: The wavelength peak differs by 5nm (585nm vs. 590nm), with the XAUY14C2 shifted slightly toward the longer wavelength end of the yellow spectrum. Both wavelengths are within the yellow LED classification, and the color difference is not perceptible to human vision under normal viewing conditions.

Q: Is the XAUY14C2 available in the same packaging format?

A: Yes. Both the LTP-3784Y-01 and XAUY14C2 use the 18-DIP (0.600", 15.24mm) package format. The XAUY14C2 is supplied in tube packaging, whereas the original part number does not specify packaging format. This does not affect component functionality or PCB compatibility.

Q: What compliance certifications does the XAUY14C2 hold?

A: The XAUY14C2 is RoHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards for electronic component procurement in most jurisdictions.