Intel Pentium 4 Processor 423 Pin Socket (PGA423) Design Guidelines

423 Pin Socket Design Guidelines

INTRODUCTION

1.1.

Objective:

This document defines a ZIF (Zero Insertion Force) socket intended for desktop and

workstation platforms based on the Intel

Pentium

4 microprocessor. The socket

provides I\O, power and ground contacts and must be low cost, low risk, robust, high

volume manufacturable (HVM), and multi-sourceable. This socket has 423 contacts

with a pitch of 100mil and an interstitial pattern that mates with the pins on the

Pentium 4 processor package.

1.2.

Purpose:

To define the functional, quality, reliability, and material (that is, visual, dimensional

and physical) requirements and specifications of the 423 Pin Socket. To provide a

423 Pin Socket which meets or exceeds applicable standards and specifications.

1.3.

Scope:

This specification applies to all 423-pin ZIF sockets designed to the requirements of

this specification.

PROCESSOR PACKAGE DESCRIPTION

Information provided in this section is to ensure dimensional compatibility of the 423 Pin

Socket with that of the Intel

Pentium

4 processor. The processor must be inserted into the

423 pin socket with zero insertion force when the lever arm is not actuated.

2.1.

Package Outline:

The outline of the package that can be used with the 423 Pin Socket is illustrated in

Figure 1. This drawing does not include potential heat sinks since these are used at

the OEM's discretion. Specific details should be obtained from Intel

Pentium

Processor In the 423-Pin Package Datasheet.

2.2.

Pin Dimensions:

Details of the pin dimensions are shown in Figure 2. The package Critical To

Function (CTF) Dimensions from the socket interface perspective are presented in

Table 1.