Datasheet > AN-9072

AN-9072

更新时间： 2024-11-13 12:20:15

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飞兆/仙童 - FAIRCHILD		/
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Smart Power Module Motion-SPMâ¢

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AN-9072 数据手册

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ANꢀ9072

Smart Power Module MotionꢀSPM™ in ꢁMiniꢀDIP SPM^

Mounting Guidance

This application note shows the electric spacing and

mounting guidance of ꢀMiniꢁDIP SPM.

Electric Spacing

The electric spacing specification of ꢀMiniꢁDIP SPM is

shown in Table 1.

Table 1. Typical Electric Spacing of ꢂMiniꢀDIP SPM

Creepage

Clearance

Distance

[mm]

Between Power Terminals

Between Control Terminals

Between Terminals & Heat Sink

3.08

2.35

2.05

3.28

4.95

2.05

Figure 1. Mounting Screws Fastening Order:

PreꢀScrewing: 1 → 2; Final Screwing: 2 → 1

Notes:

1. Do not over torque when mounting screws. Excess

mounting torque may cause ceramic cracks, as well as

screw and heat-sink damage.

2. Avoid one-side tightening stress, Figure 1 shows the

recommended torque order for mounting screws.

Uneven mounting can cause the SPM ceramic

substrate to be damaged. The pre-screwing torque is

set to 20~30% of maximum torque rating.

Mounting Method and Precautions

When installing a module to a heat sink, excessive uneven

fastening force might apply stress to inside chips, which can

lead to damage or degradation of the device. An example of

recommended fastening order is shown in Figure 1.

Table 2. Mounting Torque and Heat Sink Flatness Specifications

Limits

Typ.

Parameter

Conditions

Units

Min.

Max.

Device Flatness

See Figure 2

See Figure 3

+120

+100

0.8

µm

Heat Sink Flatness

-50

0.6

6.2

Recommended 0.7N·m

Recommended 7.1kg·m

0.7

7.1

N·m

kg·cm

Mounting Torque

Screw: M3

8.1

Weight

Note:

3. Recommend using SEMS screw (include spring/plain washer, M3) in fastening screws.

Rev. 1.0.2 • 4/7/11

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