40 pins due to the PLCC's more efficient use of board surface area.

The heatspreader versions are identical in form factor to the standard non-heatspreader versions. Both versions are JEDEC compliant in all respects. The heatspreader versions give the system designer greater latitude in thermally-enhanced board level and/or system design. RoHS compliant, lead-free and green material sets are now qualified standards.

A PLCC circuit may either be installed in a PLCC socket or surface-mounted.

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