IPC-SM-782A 表面安装设计和焊盘设计标准(带BGA).pdf - 第162页

4.0 Component Dimensions In this subsection, Figures 2a-2b provide the component dimensions for SOJ compo- nents. (Also see page 4.) Component Identiﬁer L1 (mm) S1 (mm) L2 (mm) S2 (mm) W (mm) T (mm) P (mm) H (mm) A (mm) …

1.0 SCOPE

This subsection provides the component and land pattern

dimensions for rectangular SQFP (Shrink Quad Flat Pack) and

the QFP (metric plastic quad flat pack) components. Basic

construction of the SQFP device is also covered. At the end

of this subsection is a listing of the tolerances and target sol-

der joint dimensions used to arrive at the land pattern dimen-

sions.

2.0 APPLICABLE DOCUMENTS

See

Section 11.0 for documents applicable to the

subsections.

2.1 Electronic Industries Association (EIA)

JEDEC Publication 95

Registered and Standard Outlines for

Solid State and Related Products, ‘‘Metric Quad Flat Pack

Family 3.2 mm Footprint,’’ Outline MO-108, issue ‘‘A,’’ dated

10/90

Application for copies should be addressed to:

Global Engineering Documents

1990 M Street N.W.

Washington, DC

2.2 Electronic Industries Association of Japan (EIAJ)

EIAJ-ED-7404-1

General Rules for the Preparation of Outline

Drawings of Integrated Circuits Fine Pitch Quad Flat Packages

(dated January 26, 1989)

3.0 COMPONENT DESCRIPTIONS

Flatpacks are widely used in a variety of applications for com-

mercial, industrial, or military electronics.

3.1 Basic Construction

See Figure 1.

The shrink quad flat pack has been developed for applications

requiring low height and high density. The SQFP, along with

the TSOP components, are frequently used in memory card

applications. The square SQFP family comes in 13 standard

sizes, each of which sizes can come in either a 0.5, 0.4, or 0.3

mm pitch. There are therefore 39 configurations for square

SQFPs.

Two different pin counts are allowed for each package and

the component will still meet the standard (e.g., a 5x5 pack-

age with a 0.3 mm pitch can have either 56 or 48 pins, and

still meet EIAJ-7404-1).

QFPs are also square and come in larger pitches. Wherever

applicable, the body sizes of the components identified in Fig-

ures 2 and 3 show the relationships and pin numbers for

SQFPs and QFPs that have the same body size.

3.1.1 Termination Materials

Leads must be solder-

coated with a tin/lead alloy. The solder should contain

between 58 to 68% tin. Solder may be applied to the leads by

hot dipping or by plating from solution. Plated solder termina-

tions should be subjected to post-plating reflow operation to

fuse the solder. The tin/lead finish should be at least 0.0075

mm [0.0003 in] thick.

3.1.2 Marking

All parts shall be marked with a part number

and an index area. The index area shall identify the location of

pin 1.

3.1.3 Carrier Package Format

The carrier package for-

mat for flat packs may be tube format; but, in most instances,

flat packs are delivered in a carrier tray.

3.1.4 Process Considerations

SQFPs and QFPs are usu-

ally processed using standard solder reflow processes. Parts

should be capable of withstanding ten cycles through a stan-

dard reflow system operating at 215°C. Each cycle shall con-

sist of 60 seconds exposure at 215°C.

IPC-782-11-3-1

SQFP (Rectangular)

IPC-SM-782

Surface Mount Design

and Land Pattern Standard

Date

5/96

Section

11.3

Revision

Subject

SQFP/QFP (Rectangular)

Page1of6

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4.0 Component Dimensions

In this subsection, Figures

2a-2b provide the component dimensions for SOJ compo-

nents. (Also see page 4.)

Component

Identiﬁer

L1 (mm) S1 (mm) L2 (mm) S2 (mm) W (mm) T (mm)

(mm)

count,

short

side

count,

long

sidemin max min max min max min max min max min max basic max ref ref

SQFP 5X7-32 6.80 7.20 5.20 5.89 8.80 9.20 7.20 7.89 0.10 0.30 0.40 0.80 0.50 1.70 5.00 7.00 6 10

SQFP 5X7-40 6.80 7.20 5.20 5.89 8.80 9.20 7.20 7.89 0.10 0.30 0.40 0.80 0.50 1.70 5.00 7.00 8 12

SQFP 5X7-44 6.80 7.20 5.20 5.89 8.80 9.20 7.20 7.89 0.05 0.22 0.40 0.80 0.40 1.70 5.00 7.00 8 14

SQFP 5X7-52 6.80 7.20 5.20 5.89 8.80 9.20 7.20 7.89 0.05 0.22 0.40 0.80 0.40 1.70 5.00 7.00 10 16

SQFP 5X7-60 6.80 7.20 5.20 5.89 8.80 9.20 7.20 7.89 0.05 0.15 0.40 0.80 0.30 1.70 5.00 7.00 12 18

SQFP 5X7-68 6.80 7.20 5.20 5.89 8.80 9.20 7.20 7.89 0.05 0.15 0.40 0.80 0.30 1.70 7.00 10.00 14 20

SQFP 7X10-52 8.80 9.20 7.20 7.89 11.80 12.20 10.20 10.89 0.10 0.30 0.40 0.80 0.50 2.20 7.00 10.00 10 16

SQFP 7X10-60 8.80 9.20 7.20 7.89 11.80 12.20 10.20 10.89 0.10 0.30 0.40 0.80 0.50 2.20 7.00 10.00 12 18

SQFP 7X10-68 8.80 9.20 7.20 7.89 11.80 12.20 10.20 10.89 0.05 0.22 0.40 0.80 0.40 2.20 7.00 10.00 14 20

SQFP 7X10-76 8.80 9.20 7.20 7.89 11.80 12.20 10.20 10.89 0.05 0.22 0.40 0.80 0.40 2.20 7.00 10.00 16 22

SQFP 7X10-92 8.80 9.20 7.20 7.89 11.80 12.20 10.20 10.89 0.05 0.15 0.40 0.80 0.30 2.20 7.00 10.00 18 28

SQFP 7X10-100 8.80 9.20 7.20 7.89 11.80 12.20 10.20 10.89 0.05 0.15 0.40 0.80 0.30 2.20 7.00 10.00 20 30

SQFP 10X14-80 11.80 12.20 10.20 10.89 15.80 16.20 14.20 14.89 0.10 0.30 0.40 0.80 0.50 2.20 10.00 14.00 16 24

SQFP 10X14-88 11.80 12.20 10.20 10.89 15.80 16.20 14.20 14.89 0.10 0.30 0.40 0.80 0.50 2.20 10.00 14.00 18 26

SQFP 10X14-100 11.80 12.20 10.20 10.89 15.80 16.20 14.20 14.89 0.05 0.22 0.40 0.80 0.40 2.20 10.00 14.00 20 30

SQFP 10X14-108 11.80 12.20 10.20 10.89 15.80 16.20 14.20 14.89 0.05 0.22 0.40 0.80 0.40 2.20 10.00 14.00 22 32

SQFP 10X14-140 11.80 12.20 10.20 10.89 15.80 16.20 14.20 14.89 0.05 0.15 0.40 0.80 0.30 2.20 10.00 14.00 28 42

SQFP 10X14-148 11.80 12.20 10.20 10.89 15.80 16.20 14.20 14.89 0.05 0.15 0.40 0.80 0.30 2.20 10.00 14.00 30 44

Figure 2a SQFP (Rectangular) component dimensions

~ 10°

▼

A S1

▼

~ 0.25

IPC-782-11-3-2a

IPC-SM-782

Subject

SQFP/QFP (Rectangular)

Date

5/96

Section

11.3

Revision

Page2of6

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5.0 LAND PATTERN DIMENSIONS

Figure 3 provides the land pattern dimensions for SQFP (Rect-

angular) components. These numbers represent industry con-

sensus on the best dimensions based on empirical knowledge

of fabricated land patterns.

In the table, the dimensions shown are at maximum material

condition (MMC). The least material condition (LMC) should

not exceed the fabrication (F) allowance shown on page 6.

The LMC and the MMC provide the limits for each dimension.

The dotted line in Figure 3 shows the grid placement court-

yard which is the area required to place land patterns and

their respective components in adjacent proximity without

interference or shorting. Numbers in the table represent the

number of grid elements (each element is 0.5 by 0.5 mm) in

accordance with the international grid detailed in IEC publica-

tion 97.

RLP No.

Component

Identiﬁer Z1 (mm)

(mm) Z2 (mm)

(mm) X (mm)

Y (mm)

(mm)

(mm) E (mm)

Placement Grid

(No. of Grid

Elements)ref ref ref ref ref ref

680A SQFP 5x7-32 7.80 4.60 9.80 6.60 0.30 1.60 6.20 2.50 8.20 4.50 0.50 18x22

681A SQFP 5x7-40 7.80 4.60 9.80 6.60 0.30 1.60 6.20 3.50 8.20 5.50 0.50 18x22

682A SQFP 5x7-44 7.80 4.60 9.80 6.60 0.25 1.60 6.20 2.80 8.20 5.20 0.40 18x22

683A SQFP 5x7-52 7.80 4.60 9.80 6.60 0.25 1.60 6.20 3.60 8.20 6.00 0.40 18x22

684A SQFP 5x7-60 7.80 4.60 9.80 6.60 0.17 1.60 6.20 3.30 8.20 5.10 0.30 18x22

685A SQFP 5x7-68 7.80 4.60 9.80 6.60 0.17 1.60 6.20 3.90 8.20 5.70 0.30 18x22

690A SQFP 7x10-52 9.80 6.60 12.80 9.60 0.30 1.60 8.20 4.50 11.20 7.50 0.50 22x28

691A SQFP 7x10-60 9.80 6.60 12.80 9.60 0.30 1.60 8.20 5.50 11.20 8.50 0.50 22x28

692A SQFP 7x10-68 9.80 6.60 12.80 9.60 0.25 1.60 8.20 5.20 11.20 7.60 0.40 22x28

693A SQFP 7x10-76 9.80 6.60 12.80 9.60 0.25 1.60 8.20 6.00 11.20 8.40 0.40 22x28

694A SQFP 7x10-92 9.80 6.60 12.80 9.60 0.17 1.60 8.20 5.10 11.20 8.10 0.30 22x28

695A SQFP 7x10-100 9.80 6.60 12.80 9.60 0.17 1.60 8.20 5.70 11.20 8.70 0.30 22x28

700A SQFP 10x14-80 12.80 9.60 16.80 13.60 0.30 1.60 11.20 7.50 15.20 11.50 0.50 28x36

701A SQFP 10x14-88 12.80 9.60 16.80 13.60 0.30 1.60 11.20 8.50 15.20 12.50 0.50 28x36

702A SQFP 10x14-100 12.80 9.60 16.80 13.60 0.25 1.60 11.20 7.60 15.20 11.60 0.40 28x36

703A SQFP 10x14-108 12.80 9.60 16.80 13.60 0.25 1.60 11.20 8.40 15.20 12.40 0.40 28x36

704A SQFP 10x14- 140 12.80 9.60 16.80 13.60 0.17 1.60 11.20 8.10 15.20 12.30 0.30 28x36

705A SQFP 10x14-148 12.80 9.60 16.80 13.60 0.17 1.60 11.20 8.70 15.20 12.90 0.30 28x36

Figure 3a SQFP (Rectangular) land pattern dimensions

Full radius

optional

▼

G1 Z1

▼

Grid

placement courtyard

▼

IPC-782-11-3-3a

IPC-SM-782

Subject

SQFP/QFP (Rectangular)

Date

5/96

Section

11.3

Revision

Page3of6

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