ULCD-35DT-PI Equivalent & Substitute Parts

Part Overview

The ULCD-35DT-PI is a 4.6" resistive graphic LCD display module manufactured by 4D Systems Pty Ltd. It features a transmissive TFT color display with 480 x 320 (HVGA) resolution, TTL interface, and integrated LED white backlight. 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, legacy system support, and component procurement when original stock becomes unavailable.

Substiute Parts

ULCD-35DT-PI

4D Systems Pty LtdIn Stock: 1016ULCD-35DT-PI Datasheet

Current PartRFQ

GEN4-ULCD-35DT-PI

4D Systems Pty LtdIn Stock: 1043GEN4-ULCD-35DT-PI Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ULCD-35DT-PI is determined by the following critical parameters:

• Display Specifications: Diagonal screen size (4.6"), resolution (480 x 320 HVGA), display type (TFT - Color), and display mode (Transmissive)
• Touchscreen Technology: Resistive touchscreen type
• Interface Compatibility: TTL interface support
• Color Capability: Red, Green, Blue (RGB) graphics color
• Backlight Type: LED - White
• Physical Dimensions: Dot pitch (0.15mm W x 0.15mm H)
• Compliance Standards: RoHS3 compliance

The GEN4-ULCD-35DT-PI meets all core substitution criteria. While it offers extended interface options (I2C, SPI, TTL), the TTL interface ensures backward compatibility with existing ULCD-35DT-PI implementations. The viewing area dimensions remain functionally equivalent, and all electrical and mechanical parameters align with substitution requirements.

Parameter Comparison

Engineering Selection Recommendations

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

Compliance & Regulatory Status: Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment. The GEN4-ULCD-35DT-PI carries Active product status, providing ongoing manufacturer support and availability compared to the ULCD-35DT-PI's Not For New Designs classification.

Interface Compatibility: The GEN4-ULCD-35DT-PI retains full TTL interface support, ensuring direct compatibility with existing ULCD-35DT-PI circuit implementations. The addition of I2C and SPI interfaces provides flexibility for alternative communication protocols without compromising TTL-based designs.

Display Performance Equivalence: Identical resolution (480 x 320 HVGA), screen size (4.6"), display technology (TFT - Color Transmissive), and touchscreen type (Resistive) ensure functional equivalence. Viewing area dimensions are within acceptable engineering tolerance (48.96mm vs. 49.00mm width; 73.44mm vs. 73.40mm height).

Physical & Electrical Parameters: Dot pitch (0.15mm W x 0.15mm H), backlight type (LED - White), and color capability (RGB) are identical, confirming mechanical and electrical interchangeability.

Frequently Asked Questions (FAQ)

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

A: Yes. The GEN4-ULCD-35DT-PI maintains TTL interface compatibility and identical display specifications (4.6" HVGA, 480 x 320 resolution, resistive touchscreen, RGB color). Viewing area dimensions are functionally equivalent. No circuit modifications are required for TTL-based implementations.

Q: What are the key differences between these parts?

A: The GEN4-ULCD-35DT-PI offers extended interface options (I2C, SPI, TTL) versus the ULCD-35DT-PI's TTL-only interface. The GEN4-ULCD-35DT-PI maintains Active product status, while the ULCD-35DT-PI is classified as Not For New Designs. All display and touchscreen parameters remain identical.

Q: Are there packaging or mechanical considerations for substitution?

A: Both parts are supplied in Box packaging. Viewing area dimensions are within acceptable tolerance (ULCD-35DT-PI: 48.96mm W x 73.44mm H; GEN4-ULCD-35DT-PI: 49.00mm W x 73.40mm H). Mechanical mounting and form factor are equivalent.

Q: What compliance certifications apply to the substitute part?

A: The GEN4-ULCD-35DT-PI is ROHS3 compliant and REACH unaffected, matching the ULCD-35DT-PI's regulatory status. Both parts carry ECCN EAR99 and HTSUS 8524.91.1000 classifications.

Q: Why is the ULCD-35DT-PI marked as Not For New Designs?

A: This classification indicates end-of-life status. The GEN4-ULCD-35DT-PI, as an Active product from the same manufacturer, provides ongoing support, availability, and compatibility for both legacy system maintenance and new implementations.