©2002 Fairchild Semiconductor Corporation

Rev. B, February 2002

Mechanical Characteristics and Ratings

Fig. 9. Flatness Measurement Position of The Ceramic Substrate

Note

6. Do not make over torque or mounting screws. Much mounting torque may cause ceramic cracks and bolts and Al heat-fin destruction.

7. Avoid one side tightening stress. Fig.10 shows the recommended torque order for mounting screws. Uneven mounting can cause the SPM ceramic substrate to

be damaged.

Fig. 10. Mounting Screws Torque Order (1

→

→

→

→ 2 →

→

→

→ 3 →

→

→

→ 4)

Item

Condition

Limits

Units

Min.

Typ.

Max.

Mounting Torque

Mounting Screw: M3

(Note 6 and 7)

Recommended 10Kg•cm

8

10

12

Kg•cm

Recommended 0.98N•m

0.78

0.98

1.17

N•m

Ceramic Flatness

(Note Fig. 9)

0

-

+100

um

Weight

-56

-

g

4

1

2

2

2

2

3

4

1

2

2

2

2

3