MSC045SMB120B

Package Specification

 Data Sheet

© 2025 Microchip Technology Inc. and its subsidiaries

DS50004006A - 10

The following table shows the TO-247 dimensions and should be used in conjunction with the

package outline drawing.

Table 2-1. TO-247 Dimensions

Symbol

Description

Min. (mm)

Max. (mm)

N

Number of leads

3

e

Pitch

5.44 BSC

A

Overall height

4.70

5.31

A1

Tab height

1.50

2.49

A2

Seating plane to lead

2.21

2.59

b

Lead width

1.02

1.40

b1

Lead shoulder width (X2)

1.65

2.41

b2

Lead shoulder width

2.87

3.38

c

Lead thickness

0.41

0.79

L

Lead length

19.81

20.32

L1

Lead shoulder length

3.99

4.50

D

Molded body length

20.80

21.46

D1

Thermal pad length

16.25

17.65

E

Total width

15.49

16.26

E1

Thermal pad width

13.10

14.50

Q

Hole center to tab edge

6.15 REF

∅P

Hole diameter

3.51

3.81

∅P1

Thermal pad hole diameter

7.18 REF

Notes: 

Dimensioning and tolerancing per ASME Y14.5M.

• BSC: Basic dimension. Theoretically exact value shown without tolerances.

• REF: Reference dimension, usually without tolerance, for information purposes only.

2.2.

Product Marking Information

The following figure shows the product marking information of this device.

Figure 2-2. Product Marking Information