ULCD-35DT Equivalent & Substitute Parts Reference

Part Overview

The ULCD-35DT is a 4.6" resistive graphic LCD display module manufactured by 4D Systems Pty Ltd, featuring a 480 x 320 (HVGA) resolution TFT color display with TTL interface and white LED backlight. This module is classified as "Not For New Designs," indicating it has reached end-of-life status. Finding equivalent or substitute parts is necessary for legacy system maintenance, repair operations, and continued support of existing installations where this display module is integrated.

Substiute Parts

ULCD-35DT

4D Systems Pty LtdIn Stock: 1195ULCD-35DT Datasheet

Current PartRFQ

GEN4-ULCD-35DT

4D Systems Pty LtdIn Stock: 1205GEN4-ULCD-35DT Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The GEN4-ULCD-35DT qualifies as a direct substitute based on the following critical parameters:

• Display Specifications: Identical 4.6" (88.90mm) diagonal screen size, 480 x 320 (HVGA) resolution, TFT color display type, transmissive mode, and resistive touchscreen technology
• Physical Dimensions: Viewing area measurements (49.00mm W x 73.40mm H for GEN4-ULCD-35DT vs. 48.96mm W x 73.44mm H for ULCD-35DT) are within acceptable tolerance for mechanical mounting
• Electrical Characteristics: Identical dot pitch (0.15mm W x 0.15mm H), RGB color graphics, and white LED backlight
• Interface Compatibility: Both modules support TTL interface; GEN4-ULCD-35DT additionally supports I2C and SPI protocols
• Compliance Standards: Both modules maintain ROHS3 compliance, REACH unaffected status, and identical ECCN/HTSUS classifications
• Packaging: Both supplied in box packaging format

Parameter Comparison

Engineering Selection Recommendations

The GEN4-ULCD-35DT is the qualified substitute for ULCD-35DT applications based on the following engineering criteria:

• Product Status Alignment: The GEN4-ULCD-35DT maintains active product status with ongoing manufacturer support, whereas the ULCD-35DT is designated "Not For New Designs." For legacy system repairs and replacements, the GEN4-ULCD-35DT provides continued availability and technical support.

• Regulatory Compliance: Both modules maintain identical ROHS3 compliance and REACH unaffected status, ensuring regulatory requirements are met in replacement scenarios.

• Interface Compatibility: The GEN4-ULCD-35DT retains full TTL interface compatibility with existing ULCD-35DT implementations while offering expanded I2C and SPI protocol support for enhanced system flexibility.

• Physical and Electrical Equivalence: Identical display specifications, resolution, color depth, backlight technology, and dot pitch ensure functional equivalence in display output and visual performance.

• Mechanical Fit: Viewing area dimensions are within acceptable tolerance, supporting direct mechanical substitution in existing mounting configurations.

Frequently Asked Questions (FAQ)

Q: Can the GEN4-ULCD-35DT directly replace the ULCD-35DT in existing systems?

A: Yes. The GEN4-ULCD-35DT is mechanically and electrically compatible with ULCD-35DT installations. Both modules feature identical 4.6" display size, 480 x 320 resolution, TTL interface, resistive touchscreen, and RGB color output. Viewing area dimensions are within acceptable tolerance for standard mounting applications.

Q: What are the key differences between ULCD-35DT and GEN4-ULCD-35DT?

A: The primary differences are product status and interface options. The ULCD-35DT is end-of-life ("Not For New Designs"), while the GEN4-ULCD-35DT is actively supported. The GEN4-ULCD-35DT additionally supports I2C and SPI protocols alongside TTL, providing expanded communication options. Both modules are otherwise functionally equivalent.

Q: Are there any compliance or certification differences?

A: No. Both modules maintain identical ROHS3 compliance, REACH unaffected status, and identical ECCN/HTSUS classifications. Regulatory requirements are equivalent for both parts.

Q: What is the viewing area tolerance between these modules?

A: The ULCD-35DT viewing area is 48.96mm W x 73.44mm H, while the GEN4-ULCD-35DT is 49.00mm W x 73.40mm H. These dimensions are within standard mechanical tolerance for display module mounting and do not affect functional compatibility.

Q: Does the GEN4-ULCD-35DT require firmware or software modifications?

A: TTL interface operation remains identical between modules. The GEN4-ULCD-35DT's additional I2C and SPI protocol support is optional and does not require modification of existing TTL-based implementations.

Q: What is the inventory status for these parts?

A: ULCD-35DT inventory is 1167 pieces. GEN4-ULCD-35DT inventory is 1097 pieces. Both are available as new original stock.