LFEC20E-4FN672I Equivalent & Substitute Parts

Part Overview

The LFEC20E-4FN672I is an EC series Field Programmable Gate Array (FPGA) manufactured by Lattice Semiconductor Corporation, featuring 400 I/O pins and 19,700 logic elements in a 672-BBGA package. This device is classified as obsolete, making identification of compatible substitute parts essential for ongoing system support and new design implementations. The ECP2 series successor provides enhanced logic capacity and active product status while maintaining electrical and mechanical compatibility.

Substiute Parts

LFEC20E-4FN672I

Lattice Semiconductor CorporationIn Stock: 1047LFEC20E-4FN672I Datasheet

Current PartRFQ

LFE2-20E-5FN672I

Lattice Semiconductor CorporationIn Stock: 952LFE2-20E-5FN672I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LFEC20E-4FN672I is determined by the following critical parameters:

• Package Compatibility: Both parts utilize the 672-BBGA (27x27) package, ensuring mechanical and thermal compatibility on existing PCB layouts.
• Electrical Specifications: Identical voltage supply range (1.14V ~ 1.26V) and operating temperature range (-40°C ~ 100°C TJ) permit direct electrical substitution.
• I/O Pin Count: The substitute maintains 402 I/O pins, providing equivalent or greater I/O capacity compared to the original 400 pins.
• Mounting Technology: Surface mount configuration remains unchanged, supporting existing assembly processes.
• Moisture Sensitivity: Both devices share MSL 3 rating (168 Hours), requiring identical handling and storage protocols.

The LFE2-20E-5FN672I qualifies as a direct substitute based on these aligned parameters, with the additional benefit of active product status and enhanced logic capacity.

Parameter Comparison

Engineering Selection Recommendations

The LFE2-20E-5FN672I is the qualified substitute for the LFEC20E-4FN672I based on the following engineering criteria:

Product Status: The substitute maintains active product status, ensuring long-term availability and manufacturing support. The original LFEC20E-4FN672I is obsolete, creating supply chain risk for new procurements and ongoing production.

Regulatory Compliance: The LFE2-20E-5FN672I carries ROHS3 compliance certification, meeting current environmental and regulatory requirements. Both devices maintain REACH Unaffected status and identical ECCN/HTSUS classifications.

Electrical and Mechanical Compatibility: Identical voltage supply range, operating temperature specifications, and 672-BBGA package footprint ensure direct substitution without PCB redesign or power delivery modifications.

Logic Capacity Enhancement: The substitute provides 21,000 logic elements compared to 19,700 in the original, offering increased design headroom for complex implementations.

Selection of the LFE2-20E-5FN672I eliminates obsolescence risk while maintaining full electrical and mechanical compatibility with existing designs.

Frequently Asked Questions (FAQ)

Q: Can the LFE2-20E-5FN672I be used as a direct replacement for the LFEC20E-4FN672I on existing PCBs?

A: Yes. Both devices use the 672-BBGA (27x27) package with identical footprints, voltage requirements (1.14V ~ 1.26V), and operating temperature ranges (-40°C ~ 100°C TJ). No PCB modifications are required.

Q: What is the difference in I/O pin count between these parts?

A: The LFEC20E-4FN672I provides 400 I/O pins, while the LFE2-20E-5FN672I provides 402 I/O pins. The additional pins in the substitute offer expanded I/O capacity without compromising compatibility.

Q: Are there differences in RAM capacity between these devices?

A: Yes. The LFEC20E-4FN672I contains 434,176 total RAM bits, while the LFE2-20E-5FN672I contains 282,624 total RAM bits. Design implementations must account for this difference in embedded memory availability.

Q: Do both devices require identical handling and storage procedures?

A: Yes. Both devices carry Moisture Sensitivity Level 3 (168 Hours) ratings, requiring identical MSL-compliant handling, storage, and reflow procedures.

Q: What is the significance of the product status difference?

A: The LFEC20E-4FN672I is obsolete, indicating discontinued manufacturing and limited availability. The LFE2-20E-5FN672I is active, ensuring ongoing supply, manufacturing support, and long-term availability for production and new designs.

Q: Are there regulatory compliance differences?

A: The LFE2-20E-5FN672I is ROHS3 compliant, meeting current environmental regulations. Both devices maintain REACH Unaffected status and identical export control classifications (ECCN 3A991D, HTSUS 8542.39.0001).