ULCD-43DT-PI Equivalent & Substitute Parts

Part Overview

The ULCD-43DT-PI is a 4.3-inch resistive graphic LCD display module manufactured by 4D Systems Pty Ltd. It features a transmissive TFT color display with 480 x 272 pixel resolution, TTL interface, and integrated Raspberry Pi shield connectivity with cable. The module is designed for embedded display applications requiring direct TTL communication.

The ULCD-43DT-PI carries a "Not For New Designs" product status, indicating that 4D Systems has transitioned this model out of active development. Organizations requiring this display functionality for new projects or long-term deployments should evaluate equivalent alternatives that maintain core display specifications while offering active product support and enhanced interface options.

Substiute Parts

ULCD-43DT-PI

4D Systems Pty LtdIn Stock: 907ULCD-43DT-PI Datasheet

Current PartRFQ

GEN4-ULCD-43DT-PI

4D Systems Pty LtdIn Stock: 1138GEN4-ULCD-43DT-PI Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The GEN4-ULCD-43DT-PI qualifies as a direct substitute based on the following alignment of critical parameters:

Matching Specifications:

• Diagonal screen size: 4.3" (109.22mm)
• Display resolution: 480 x 272 pixels
• Display type: TFT - Color
• Display mode: Transmissive
• Touchscreen type: Resistive
• Graphics color: Red, Green, Blue (RGB)
• Backlight: LED - White
• Viewing area: 95.04mm W x 53.86mm H
• RoHS3 compliance
• REACH unaffected status

Key Difference: The GEN4-ULCD-43DT-PI extends interface capability by supporting I2C, SPI, and TTL protocols, whereas the ULCD-43DT-PI supports TTL only. The GEN4 variant maintains full backward compatibility with TTL-based implementations while offering additional communication options for flexible system integration.

Parameter Comparison

Engineering Selection Recommendations

For Existing ULCD-43DT-PI Implementations: The ULCD-43DT-PI remains suitable for ongoing support of deployed systems. Current inventory of 879 units is available for replacement and maintenance purposes.

For New Designs: The GEN4-ULCD-43DT-PI is the recommended selection. This variant carries "Active" product status, ensuring continued manufacturer support, availability, and potential firmware updates. The GEN4 series maintains full TTL interface compatibility with legacy ULCD-43DT-PI designs while providing expanded I2C and SPI interface options for modern embedded system architectures. Both modules meet ROHS3 and REACH compliance requirements.

The GEN4-ULCD-43DT-PI inventory of 1123 units provides supply security for production deployments.

Frequently Asked Questions (FAQ)

Q: Can the GEN4-ULCD-43DT-PI directly replace the ULCD-43DT-PI in existing TTL-based systems?

A: Yes. The GEN4-ULCD-43DT-PI supports TTL interface operation identical to the ULCD-43DT-PI. Existing TTL communication protocols and pinout configurations remain compatible. The additional I2C and SPI interface options are optional and do not affect TTL operation.

Q: What is the significance of the "Not For New Designs" status on the ULCD-43DT-PI?

A: This designation indicates that 4D Systems has concluded active development and optimization of the ULCD-43DT-PI. New product designs should utilize the GEN4-ULCD-43DT-PI to ensure access to current manufacturer support, documentation, and potential future enhancements within the GEN4 product line.

Q: Are the display resolutions and physical dimensions identical between both modules?

A: Yes. Both modules feature 480 x 272 pixel resolution, 4.3-inch diagonal screen size, and 95.04mm W x 53.86mm H viewing area. Physical form factors are equivalent for mechanical integration purposes.

Q: What compliance certifications apply to both modules?

A: Both the ULCD-43DT-PI and GEN4-ULCD-43DT-PI are ROHS3 compliant and REACH unaffected, meeting current environmental and hazardous substance regulations for electronic components.

Q: Is there a difference in dot pitch specifications between the two modules?

A: Yes. The ULCD-43DT-PI specifies 0.07mm W x 0.20mm H dot pitch, while the GEN4-ULCD-43DT-PI specifies 0.20mm W x 0.20mm H dot pitch. This represents a manufacturing refinement in the GEN4 generation. Both specifications remain within acceptable parameters for 480 x 272 resolution displays at 4.3-inch diagonal size.