28-Pin PLCC Socket – Surface Mount (SMT) or Through-Hole (TH) IC Adapter for Plastic Leaded Chip Carriers, High-Reliability J-Lead Interface

The 28-Pin PLCC Socket is a specialized interconnect solution designed to facilitate the easy replacement and upgrading of integrated circuits without the need for desoldering. Commonly used for BIOS chips, microcontrollers (like the ATmega series in PLCC form), and CPLDs, this socket allows you to "plug-and-play" your components during the prototyping or firmware-updating phase. The socket is engineered with a "staggered" contact arrangement that perfectly aligns with the J-leads of a PLCC-28 package. By using a socket instead of soldering the chip directly to the board, you protect sensitive silicon from thermal stress and allow for rapid field servicing. The housing is made from high-temperature, glass-reinforced thermoplastic, making it compatible with standard reflow or wave soldering processes. For best results, it is recommended to use a PLCC Extraction Tool to remove chips from the socket. This prevents the "prying" motion that can damage the delicate plastic housing or bend the internal metal contacts. Whether you are repairing vintage computer hardware or developing a new industrial controller, the 28-pin PLCC socket provides a robust and professional mounting solution.

Key Features:

Low Profile Design: The compact, square footprint saves valuable PCB real estate while providing easy access for chip installation and removal.

Visual Orientation Aid: Features a distinct "polarized" corner (chamfered edge) to match the Pin 1 indicator on PLCC chips, preventing incorrect insertion.

Open Bottom Architecture: Designed with a center opening to facilitate heat dissipation and allow for easy inspection of solder joints beneath the socket.

High-Retention Phosphor Bronze Contacts: Equipped with tin-plated phosphor bronze spring contacts that maintain consistent pressure on the chip leads for a vibration-resistant connection.

Standard 2.54mm (0.1") Pitch: Available in standard grid configurations suitable for breadboarding (via adapters) or direct PCB integration.