LFEC33E-4FN484I Equivalent & Substitute Parts

Part Overview

The LFEC33E-4FN484I is an EC series Field Programmable Gate Array (FPGA) manufactured by Lattice Semiconductor Corporation, featuring 360 I/O pins and 32,800 logic elements in a 484-BBGA package. This device is classified as obsolete, making identification of compatible substitute parts essential for ongoing system support and new design implementations where legacy compatibility is required.

Substiute Parts

LFEC33E-4FN484I

Lattice Semiconductor CorporationIn Stock: 1158LFEC33E-4FN484I Datasheet

Current PartRFQ

LFE2-35E-5FN484I

Lattice Semiconductor CorporationIn Stock: 1174LFE2-35E-5FN484I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The LFE2-35E-5FN484I qualifies as a substitute for the LFEC33E-4FN484I based on the following critical parameters:

• Package Compatibility: Both devices use the 484-BBGA package format (484-FPBGA 23x23), ensuring mechanical and electrical pin compatibility on PCB layouts
• Voltage Supply Range: Both operate within 1.14V ~ 1.26V, maintaining identical power supply requirements
• Mounting Type: Both are surface mount devices with identical thermal and assembly characteristics
• Operating Temperature Range: Both support -40°C ~ 100°C (TJ), ensuring equivalent thermal performance
• Moisture Sensitivity Level: Both rated at MSL 3 (168 Hours), requiring identical handling and storage protocols
• Regulatory Compliance: Both maintain REACH Unaffected status and identical ECCN/HTSUS classifications

The substitute part represents an active product from the ECP2 series, providing continued availability and manufacturing support compared to the obsolete EC series original.

Parameter Comparison

Engineering Selection Recommendations

The LFE2-35E-5FN484I is the designated manufacturer substitute for the obsolete LFEC33E-4FN484I. Selection of this substitute is supported by:

• Product Status: The substitute maintains active manufacturing status, ensuring long-term availability and supply chain continuity
• Regulatory Compliance: Both devices maintain identical REACH and export control classifications (ECCN 3A991D, HTSUS 8542.39.0001), eliminating compliance barriers to substitution
• Package and Thermal Equivalence: Identical 484-BBGA package specifications and operating temperature ranges ensure direct PCB compatibility without layout modifications
• RoHS Compliance: The substitute is ROHS3 compliant, meeting current environmental and regulatory standards

The LFE2-35E-5FN484I represents the current-generation equivalent within the Lattice FPGA portfolio for applications previously served by the EC series LFEC33E-4FN484I.

Frequently Asked Questions (FAQ)

Q: Can the LFE2-35E-5FN484I be used as a direct replacement for the LFEC33E-4FN484I?

A: Yes, the LFE2-35E-5FN484I qualifies as a substitute based on identical package format (484-BBGA), voltage supply range (1.14V ~ 1.26V), operating temperature range (-40°C ~ 100°C), and moisture sensitivity level (MSL 3). Both devices are surface mount components with matching thermal and assembly requirements.

Q: What are the differences in logic capacity between these devices?

A: The LFEC33E-4FN484I contains 32,800 logic elements and 434,176 RAM bits, while the LFE2-35E-5FN484I contains 32,000 logic elements and 339,968 RAM bits. The substitute provides slightly reduced logic capacity and RAM resources.

Q: Are there differences in I/O pin count?

A: Yes. The LFEC33E-4FN484I provides 360 I/O pins, while the LFE2-35E-5FN484I provides 331 I/O pins. Both devices use the same 484-BBGA package, with the difference reflecting the internal architecture of each series.

Q: Do these devices have identical power supply requirements?

A: Yes, both devices operate within the same voltage supply range of 1.14V ~ 1.26V, eliminating the need for power supply modifications during substitution.

Q: What is the significance of the MSL 3 rating for both devices?

A: MSL 3 (Moisture Sensitivity Level 3) indicates both devices require identical handling and storage protocols, with a floor life of 168 hours after moisture exposure. No additional precautions are required when substituting between these parts.

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

A: No. Both devices maintain identical REACH status (REACH Unaffected), ECCN classification (3A991D), and HTSUS codes (8542.39.0001). The substitute is ROHS3 compliant, meeting current environmental standards.