ULCD-43DCT Equivalent & Substitute Parts

Part Overview

The ULCD-43DCT is a 4.3-inch capacitive graphic LCD display module manufactured by 4D Systems Pty Ltd. It features a transmissive TFT color display with 480 x 272 pixel resolution and TTL interface connectivity. The product is classified as "Not For New Designs," indicating it has reached end-of-life status. Finding equivalent substitute parts is necessary for ongoing maintenance, repair, and legacy system support where this display module is integrated into existing applications.

Substiute Parts

ULCD-43DCT

4D Systems Pty LtdIn Stock: 1146ULCD-43DCT Datasheet

Current PartRFQ

GEN4-ULCD-43DCT-CLB

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

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ULCD-43DCT is determined by the following critical parameters:

• Display Specifications: Diagonal screen size (4.3"), resolution (480 x 272), display type (TFT - Color), and display mode (Transmissive) must match exactly
• Touchscreen Technology: Capacitive touchscreen type must be maintained
• Viewing Area: Physical dimensions (95.04mm W x 53.86mm H) must be identical
• Backlight: LED - White backlight configuration must be preserved
• Graphics Color: RGB color capability must be supported
• Interface Compatibility: The substitute must support TTL interface as a minimum requirement; additional interfaces (I2C, SPI) are acceptable enhancements
• Compliance Standards: RoHS3 compliance and REACH unaffected status must be maintained
• Packaging: Box packaging format must be consistent

The substitute part GEN4-ULCD-43DCT-CLB meets all critical substitution criteria while offering enhanced interface options and active product status.

Parameter Comparison

Engineering Selection Recommendations

The GEN4-ULCD-43DCT-CLB is the qualified substitute for the ULCD-43DCT based on the following engineering criteria:

Compliance and Regulatory Alignment: Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory continuity in applications requiring these certifications.

Product Status Advantage: The GEN4-ULCD-43DCT-CLB carries Active product status, providing long-term availability and supply chain stability compared to the ULCD-43DCT's "Not For New Designs" classification. This is critical for legacy system maintenance and extended production runs.

Interface Enhancement: The substitute supports TTL interface as required, with additional I2C and SPI interface options. Existing TTL-based implementations remain fully compatible without modification.

Display Specifications: All critical display parameters—screen size, resolution, color capability, viewing area, and backlight configuration—are identical between the two parts, ensuring functional equivalence in display output.

Dot Pitch Consideration: The GEN4-ULCD-43DCT-CLB has a horizontal dot pitch of 0.20mm compared to 0.07mm on the original part. This represents a pixel density difference that may affect visual rendering characteristics in applications sensitive to fine detail or text clarity.

Frequently Asked Questions (FAQ)

Q: Can the GEN4-ULCD-43DCT-CLB be used as a direct replacement for the ULCD-43DCT?

A: Yes, for TTL interface applications. The substitute maintains identical display specifications, resolution, screen size, and viewing area. Existing TTL connections require no modification. The dot pitch difference (0.20mm vs 0.07mm horizontal) may affect visual rendering in applications with high-resolution graphics or small text.

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

A: This designation indicates the part has reached end-of-life and is no longer recommended for new product development. The GEN4-ULCD-43DCT-CLB's Active status provides ongoing manufacturer support, documentation updates, and extended availability for legacy system repairs and maintenance.

Q: Are there interface compatibility concerns when substituting?

A: No. The substitute supports TTL interface as the primary requirement. The additional I2C and SPI interfaces are optional enhancements that do not affect TTL-based implementations. Existing firmware and hardware designs using TTL remain fully compatible.

Q: How do the dot pitch specifications affect substitution?

A: The ULCD-43DCT has a horizontal dot pitch of 0.07mm, while the GEN4-ULCD-43DCT-CLB has 0.20mm. Both maintain the same 480 x 272 resolution across the identical 95.04mm x 53.86mm viewing area. The difference reflects different pixel arrangement but does not affect overall display dimensions or resolution capability.

Q: Are both parts RoHS and REACH compliant?

A: Yes. Both the ULCD-43DCT and GEN4-ULCD-43DCT-CLB are ROHS3 compliant and REACH unaffected, ensuring regulatory compliance in applications requiring these certifications.

Q: What packaging format is used for both parts?

A: Both parts are supplied in Box packaging format, maintaining consistency in handling, storage, and logistics requirements.