ULCD-43D-PI Equivalent & Substitute Parts

Part Overview

The ULCD-43D-PI is a 4.3" graphic LCD display module manufactured by 4D Systems Pty Ltd, featuring a transmissive TFT color panel with RGB output and TTL interface. The module is designed for Raspberry Pi integration with integrated shield and cable. With a resolution of 480 x 272 pixels and LED white backlight, this display serves applications requiring compact color graphical output.

The ULCD-43D-PI carries a "Not For New Designs" product status, indicating it has been superseded in the manufacturer's product line.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 support of existing systems and for new designs requiring compatible display solutions with current product availability and active manufacturer support.

Substiute Parts

ULCD-43D-PI

4D Systems Pty LtdIn Stock: 1095ULCD-43D-PI Datasheet

Current PartRFQ

GEN4-ULCD-43D-PI

4D Systems Pty LtdIn Stock: 929GEN4-ULCD-43D-PI Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

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

• Screen Size & Resolution: Substitute parts must maintain the 4.3" (109.22mm) diagonal screen size with 480 x 272 pixel resolution to ensure mechanical fit and software compatibility.
• Display Technology: TFT color transmissive technology with RGB output is required for functional equivalence.
• Interface Compatibility: TTL interface support is mandatory; additional interface options (I2C, SPI) do not disqualify a substitute if TTL remains available.
• Viewing Area & Dot Pitch: Physical dimensions and pixel spacing must remain consistent to preserve display quality and mechanical integration.
• Compliance Standards: RoHS3 compliance and REACH unaffected status must be maintained.

The GEN4-ULCD-43D-PI qualifies as a direct substitute based on these parameters. It maintains identical screen size, resolution, display type, viewing area, and compliance certifications while offering enhanced interface flexibility through additional I2C and SPI support alongside TTL.

Parameter Comparison

Engineering Selection Recommendations

For Existing System Support: The ULCD-43D-PI remains suitable for maintenance and repair of deployed systems where inventory is available (1003 pcs in stock). Continued use is supported by ROHS3 compliance and REACH unaffected status.

For New Designs: The GEN4-ULCD-43D-PI is the recommended selection. It maintains full electrical and mechanical compatibility with the ULCD-43D-PI while offering active product status from the manufacturer. The GEN4 variant provides expanded interface options (I2C and SPI in addition to TTL), enabling greater design flexibility without sacrificing core display specifications. Current inventory availability (896 pcs) supports production requirements.

Both parts meet identical compliance requirements (ROHS3, REACH unaffected, EAR99 ECCN classification) and share the same HTSUS tariff code, ensuring regulatory and supply chain consistency.

Frequently Asked Questions (FAQ)

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

A: Yes. The GEN4-ULCD-43D-PI maintains identical screen size (4.3"), resolution (480 x 272), viewing area (95.04mm W x 53.86mm H), display type (TFT color transmissive RGB), and backlight specification (LED white). TTL interface support is preserved, ensuring compatibility with existing TTL-based control circuits. The additional I2C and SPI interface options do not affect TTL operation.

Q: What is the difference in dot pitch between these parts?

A: The ULCD-43D-PI specifies 0.07mm W x 0.20mm H dot pitch, while the GEN4-ULCD-43D-PI specifies 0.20mm W x 0.20mm H. Both maintain the same 480 x 272 resolution across the identical 95.04mm x 53.86mm viewing area. This difference reflects manufacturing process updates in the GEN4 generation and does not affect visual performance or mechanical compatibility.

Q: Are there compliance or regulatory differences between these parts?

A: No. Both parts are ROHS3 compliant, REACH unaffected, and classified under EAR99 ECCN with identical HTSUS tariff code 8524.91.1000. They meet equivalent regulatory requirements for deployment in regulated applications.

Q: Why is the ULCD-43D-PI marked "Not For New Designs"?

A: This designation indicates the part has been superseded by newer generations in the manufacturer's product line. The GEN4-ULCD-43D-PI represents the current active product offering with equivalent or enhanced specifications. New designs should specify the GEN4 variant to ensure long-term manufacturer support and supply continuity.

Q: What packaging is provided with these display modules?

A: Both the ULCD-43D-PI and GEN4-ULCD-43D-PI are supplied in box packaging. The ULCD-43D-PI includes integrated Raspberry Pi shield and cable as part of the standard package.