ULCD-43DCT-PI Equivalent & Substitute Parts

Part Overview

The ULCD-43DCT-PI is a 4.3-inch capacitive touchscreen LCD display module manufactured by 4D Systems Pty Ltd. It features a transmissive TFT color display with 480 x 272 pixel resolution, LED white backlight, and TTL interface connectivity. The module is designed as a Raspberry Pi shield with integrated cable assembly.

This part carries a "Not For New Designs" product status, indicating it has been superseded in the manufacturer's product line. Identifying equivalent substitute parts is necessary for ongoing maintenance, legacy system support, and design continuity where this display specification remains functionally appropriate.

Substiute Parts

ULCD-43DCT-PI

4D Systems Pty LtdIn Stock: 1009ULCD-43DCT-PI Datasheet

Current PartRFQ

GEN4-ULCD-43DCT-CLB-PI

4D Systems Pty LtdIn Stock: 1040GEN4-ULCD-43DCT-CLB-PI Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

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

Matching Parameters:

• Display Type: TFT - Color
• Display Mode: Transmissive
• Touchscreen Type: Capacitive
• Diagonal Screen Size: 4.3" (109.22mm)
• Resolution: 480 x 272 pixels
• Viewing Area: 95.04mm W x 53.86mm H
• Backlight: LED - White
• Graphics Color: Red, Green, Blue (RGB)
• RoHS Status: ROHS3 Compliant
• REACH Status: REACH Unaffected

Interface Consideration: The substitute part supports I2C, SPI, and TTL interfaces, providing backward compatibility with the original TTL interface while offering additional communication protocol options.

Dot Pitch Variance: The substitute exhibits a dot pitch of 0.20mm W x 0.20mm H compared to the original 0.07mm W x 0.20mm H. This represents a horizontal pixel spacing difference that does not affect functional display resolution or visual performance at the specified 480 x 272 pixel density.

Parameter Comparison

Engineering Selection Recommendations

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

Product Status Alignment: The substitute carries an "Active" product status, ensuring ongoing manufacturer support, availability, and compliance maintenance. The original part's "Not For New Designs" designation indicates end-of-life status, making the active substitute the preferred choice for system continuity.

Regulatory Compliance: Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying equivalent environmental and regulatory requirements for industrial and commercial applications.

Functional Equivalence: All critical display parameters—resolution, screen size, viewing area, color capability, and touchscreen technology—are identical. The substitute's expanded interface support (I2C, SPI, TTL) provides enhanced flexibility without compromising backward compatibility with existing TTL-based implementations.

Certification Parity: Both components share identical ECCN (EAR99) and HTSUS (8524.91.1000) classifications, confirming equivalent trade and export compliance status.

Frequently Asked Questions (FAQ)

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

A: Yes. The substitute maintains identical display specifications, resolution, screen size, and viewing area. TTL interface compatibility is preserved, allowing direct integration into systems currently using the original part. The expanded interface options (I2C, SPI) are optional and do not affect TTL operation.

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

A: The dot pitch variance (0.07mm W x 0.20mm H versus 0.20mm W x 0.20mm H) reflects manufacturing process differences but does not alter the functional pixel density or visual output. Both parts deliver 480 x 272 resolution across the identical 95.04mm x 53.86mm viewing area.

Q: Why is the original part marked "Not For New Designs"?

A: This designation indicates the ULCD-43DCT-PI has reached end-of-life status in the manufacturer's product portfolio. The GEN4-ULCD-43DCT-CLB-PI represents the current-generation equivalent, offering the same functional capabilities with active manufacturer support and ongoing availability.

Q: Are there packaging or form factor differences between these parts?

A: Both parts are supplied in box packaging. The GEN4-ULCD-43DCT-CLB-PI belongs to the gen4 product series, while the ULCD-43DCT-PI is based on the ULCD-43 platform. Physical dimensions and mounting interfaces remain consistent with the 4.3-inch display specification.

Q: Do both parts meet the same regulatory standards?

A: Yes. Both components are ROHS3 compliant and REACH unaffected, with identical ECCN and HTSUS classifications. They satisfy equivalent environmental, trade, and export compliance requirements.