Pin 1 Orientation

Devices are reeled so that Pin 1 is oriented properly with the direction of feed and round sprocket holes. Pin 1 orientation

is denoted as C1 to C4, or M1, with respect to the direction of feed and round sprocket holes, as illustrated below.

M1

DIRECTION OF FEED

ROUND

SPROCKET

HOLES

C1

C4

C2

C3

NBSOIC (C1)

SSOP, TSSOP, AND MSOP (C1)

SOT-23 (C4)

SOT-23 (C4)

WBSOIC (C1)

TQFP, LQFP, MQFP, AND LPCC (C2)

PLCC (M1)

DIRECTION OF FEED

DIRECTION OF FEED

DIRECTION OF FEED

DIRECTION OF FEED

DIRECTION OF FEED

DIRECTION OF FEED

DIRECTION OF FEED

Figure 2. Pin 1 orientation reference.

Figure 3. Examples of standard Pin 1 orientation.

2