LFEC33E-4FN484C Equivalent & Substitute Parts

Part Overview

The LFEC33E-4FN484C is an EC series Field Programmable Gate Array (FPGA) manufactured by Lattice Semiconductor, featuring 360 I/O pins and 32,800 logic elements in a 484-BBGA package. This device is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The ECP2 series LFE2-35E-5FN484C serves as the primary substitute, offering enhanced capabilities within compatible electrical and mechanical parameters.

Substiute Parts

LFEC33E-4FN484C

Lattice SemiconductorIn Stock: 690LFEC33E-4FN484C Datasheet

Current PartRFQ

LFE2-35E-5FN484C

Lattice Semiconductor CorporationIn Stock: 9325LFE2-35E-5FN484C Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LFEC33E-4FN484C is determined by the following critical parameters:

• Package Compatibility: Both main and substitute parts use the 484-BBGA package with identical 23x23mm footprint, ensuring mechanical and electrical pin compatibility
• Voltage Supply Range: Identical 1.14V ~ 1.26V supply voltage specification allows direct electrical substitution
• Operating Temperature Range: Both devices operate within 0°C ~ 85°C (TJ), maintaining thermal compatibility
• Mounting Type: Surface mount configuration is consistent across both parts
• Moisture Sensitivity Level: Both parts specify MSL 3 (168 Hours), requiring identical handling and storage protocols
• Regulatory Compliance: Both parts share identical ECCN (3A991D) and HTSUS (8542.39.0001) classifications, and both are REACH Unaffected

The LFE2-35E-5FN484C qualifies as a substitute based on these aligned parameters, despite differences in logic element count, RAM capacity, and I/O pin count, which represent functional enhancements rather than incompatibilities.

Parameter Comparison

Engineering Selection Recommendations

The LFE2-35E-5FN484C is the designated substitute for the obsolete LFEC33E-4FN484C based on the following engineering criteria:

• Product Status Alignment: The substitute part maintains active product status, ensuring long-term availability and manufacturing support, whereas the original part is obsolete
• Regulatory Compliance: Both parts share identical ECCN and HTSUS classifications, maintaining export control and tariff compliance without modification
• RoHS Compliance: The LFE2-35E-5FN484C is RoHS3 compliant, meeting current environmental and hazardous substance restrictions
• Electrical and Mechanical Compatibility: Identical voltage supply range, operating temperature, package footprint, and MSL rating ensure direct substitution without circuit redesign
• Inventory Availability: The substitute part is available in significantly higher quantities (9,300 pcs) compared to the original part (676 pcs), supporting production continuity

Frequently Asked Questions (FAQ)

Q: Can the LFE2-35E-5FN484C be used as a direct replacement for the LFEC33E-4FN484C?

A: Yes, within the constraints of your application's logic element, RAM, and I/O requirements. Both parts share identical package footprint (484-FPBGA 23x23), voltage supply range (1.14V ~ 1.26V), operating temperature (0°C ~ 85°C), and MSL rating (3). Pin-to-pin compatibility is maintained for the 484-BBGA package.

Q: What are the functional differences between these parts?

A: The LFE2-35E-5FN484C offers 32,000 logic elements versus 32,800 in the original, 339,968 RAM bits versus 434,176, and 331 I/O pins versus 360. These represent functional variations; the substitute part may not support designs requiring the full I/O count or RAM capacity of the original.

Q: Are there any compliance or certification differences?

A: Both parts are REACH Unaffected and share identical ECCN (3A991D) and HTSUS (8542.39.0001) classifications. The substitute part is RoHS3 compliant, whereas the original part status is not specified in the provided data.

Q: What is the moisture sensitivity level, and how does it affect handling?

A: Both parts specify MSL 3 (168 Hours), requiring identical storage conditions and handling protocols. Parts must be stored in controlled humidity environments and baked according to IPC-A-2.1 standards before reflow soldering.

Q: Why is the original part obsolete, and what does this mean for my design?

A: Obsolete status indicates the LFEC33E-4FN484C is no longer manufactured or supported by Lattice Semiconductor. Transitioning to the active LFE2-35E-5FN484C ensures access to current manufacturing, technical support, and long-term availability.