What is New in IPC-7351C.pdf - 第20页

PC B L ibr ar i es Pr e s ents : Wh at is N ew i n IPC- 7351C A s s e m b ly Sh o p s L i k e Do t s b ut , The y C ons ume Sp a ce Gul l W i n g & J - Lea d P o l ari ty Botto m O nl y Pol a r i ty Ou ts i d e Cou r…

PCB Libraries Presents:

What is New in IPC-7351C

Quad Flat No-lead (QFN)

SOT23

Quad Flat Pack (QFP)

Ball Grid Array (BGA)

Axial Resistor

Silkscreen Visible After Assembly

PCB Libraries Presents:

What is New in IPC-7351C

Assembly Shops Like Dots but, They Consume Space

Gull Wing & J-Lead Polarity

Bottom Only Polarity

Outside Courtyard

2-pin Diode/LED Polarity 2-pin Capacitor Polarity

Alternate Silkscreen Polarity Marking

PCB Libraries Presents:

What is New in IPC-7351C

Assembly Outline & Polarity Guidelines

Non-polarized Chip,

Crystal, Molded Body

Polarized Chip, SOD,

LED, SOT. Molded Body

Plastic Leaded Chip Carrier

PLCC, LCC, 4-sided Chip Array

Small Outline Package

SOP, SON, QFN, QFP

1.00 mm

0.10 mm

Line Width