ULCD-43PCT Equivalent & Substitute Parts

Part Overview

The ULCD-43PCT is a 4.3" capacitive touchscreen TFT color display module manufactured by 4D Systems Pty Ltd. This module features a 480 x 272 pixel resolution with transmissive RGB display technology, LED-white backlighting, and dual interface support (I2C and TTL). The product is currently classified as obsolete, which necessitates identification of active equivalent alternatives for ongoing system design and maintenance applications.

Substiute Parts

ULCD-43PCT

4D Systems Pty LtdIn Stock: 887ULCD-43PCT Datasheet

Current PartRFQ

GEN4-ULCD-43DCT-CLB

4D Systems Pty LtdIn Stock: 821GEN4-ULCD-43DCT-CLB Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The GEN4-ULCD-43DCT-CLB qualifies as a direct substitute for the ULCD-43PCT based on the following critical parameters:

Matching Parameters:

• Diagonal screen size: 4.3" (109.22mm)
• Viewing area: 95.04mm W x 53.86mm H
• Dot pixels: 480 x 272
• Display type: TFT - Color
• Display mode: Transmissive
• Touchscreen type: Capacitive
• Graphics color: Red, Green, Blue (RGB)
• Backlight: LED - White
• Manufacturer: 4D Systems Pty Ltd
• RoHS compliance: ROHS3 Compliant

Interface Enhancement: The GEN4-ULCD-43DCT-CLB provides expanded interface support (I2C, SPI, TTL) compared to the ULCD-43PCT (I2C, TTL), enabling broader system integration flexibility while maintaining backward compatibility with existing I2C and TTL implementations.

Product Status Advantage: The substitute part maintains active product status, ensuring continued availability and manufacturer support, whereas the ULCD-43PCT is obsolete.

Parameter Comparison

Engineering Selection Recommendations

The GEN4-ULCD-43DCT-CLB is the qualified substitute for the obsolete ULCD-43PCT. Both parts maintain identical mechanical form factors, electrical interface compatibility (I2C and TTL), and display specifications. The substitute part offers extended interface capability through SPI support and maintains active product status with full manufacturer support.

Both parts satisfy ROHS3 compliance and REACH regulatory requirements, ensuring continued use in regulated applications. The dot pitch differential (0.15mm versus 0.20mm) reflects manufacturing process evolution within the same product family and does not impact functional compatibility for standard display applications.

Frequently Asked Questions (FAQ)

Q: Can the GEN4-ULCD-43DCT-CLB directly replace the ULCD-43PCT in existing designs?

A: Yes. The substitute part maintains identical screen size (4.3"), resolution (480 x 272), viewing area dimensions, and interface support for I2C and TTL protocols. Existing firmware and hardware implementations using these interfaces will function without modification.

Q: What is the significance of the dot pitch difference between the two parts?

A: The dot pitch difference (0.15mm versus 0.20mm) represents a manufacturing refinement within the same product generation. This parameter does not affect display resolution, color reproduction, or interface compatibility. Both configurations deliver the same 480 x 272 pixel output across the identical 4.3" display area.

Q: Why does the GEN4-ULCD-43DCT-CLB include SPI interface support?

A: The GEN4 series incorporates expanded interface options (I2C, SPI, TTL) to support broader system integration scenarios. Existing designs using only I2C or TTL remain fully compatible; the additional SPI capability provides flexibility for new implementations without requiring design changes to legacy systems.

Q: Are there packaging differences between these parts?

A: The ULCD-43PCT is packaged with standard designation (-), while the GEN4-ULCD-43DCT-CLB is packaged in a Box configuration. Both maintain identical mechanical dimensions and mounting interfaces.

Q: What is the inventory status for these parts?

A: The ULCD-43PCT has 798 units in stock as new original inventory. The GEN4-ULCD-43DCT-CLB has 797 units in stock as new original inventory. Both parts are available for immediate procurement.