Datasheet

Transition Socket Specification
DS51194S-page 38  2010 Microchip Technology Inc.
SOT/DFN/QFN TRANSITION
SOCKETS
SOT/DFN/QFN transition sockets and associated
hardware are shown below.
FIGURE 6: DFN/QFN TWO-PART
TRANSITION SOCKET
FIGURE 7: QFN TRANSITION SOCKET
The following SOT/DFN/QFN transition sockets have
been discontinued:
• XLT08DFN: One 8-lead DFN transition socket.
(Replaced by XLT08DFN2.)
• XLT28QFN: One 28-lead QFN transition socket.
(Replaced by XLT28QFN4.)
• XLT28QFN2: One 28-lead QFN transition socket.
(Replaced by XLT28QFN3.)
• XLT44QFN: One 44-lead QFN two-part transition
socket. (Replaced by XLT44QFN2.)
See the drawings in this section for layout dimensions.
RECOMMENDED PCB LAYOUT
The recommended target board footprint layout for
different pin-counts is shown here.
FIGURE 8: 8-PIN DFN
FIGURE 9: 28-PIN QFN
FIGURE 10: 44-PIN QFN
DFN/QFN Transition Socket
Target/Application Board
Cable to Processor Module
PDIP Device Adapter
Gold Standoffs/
Adapters
QFN Transition Socket
Target/Application Board
Cable to Processor Module
PDIP Device Adapter
Gold Standoffs/
Adapters
16 mils
24 mils
50 mils
24 mils
11 mils
26 mils
16 mils
13 mils
26 mils