Package mechanical

M87C257

18/22

5

Package mechanical

Figure 9.

FDIP28W - 28 pin Ceramic Frit-seal DIP, with window, package outline

1.

Drawing is not to scale.

Table 12.

FDIP28WB - 28 pin Ceramic Frit-seal DIP, with window (round 0.280"),

package mechanical data

Symbol

millimeters

inches

Typ

Min

Max

Typ

Min

Max

A5.72

0.225

A1

0.51

1.40

0.020

0.055

A2

3.91

4.57

0.154

0.180

A3

3.89

4.50

0.153

0.177

B

0.41

0.56

0.016

0.022

B1

1.45

–

–

0.057

–

–

C

0.23

0.30

0.009

0.012

D

36.50

37.34

1.437

1.470

D2

33.02–

–1.300

–

–

E

15.24

–

–

0.600

–

–

E1

13.06

13.36

0.514

0.526

e2.54–

–

0.100

–

–

eA

14.99

–

–

0.590

–

–

eB

16.18

18.03

0.637

0.710

L

3.18

4.10

0.125

0.161

α

4°

11°

4°

11°

S

1.52

2.49

0.060

0.098

Ø7.11

–

–

0.280

–

–

N28

28

FDIPW-a

A3

A1

A

L

B1

B

e

D

S

E1

E

N

1

C

α

eA

D2

∅

eB

A2