Details

Copper molybdenum copper




Key words:

Copper molybdenum copper

CMC

Cu/Mo/Cu

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Product Description


              

 

Copper molybdenum copper:
  Copper molybdenum copper packaging material (CMC) is a sandwich structured flat-panel composite material. It uses pure molybdenum as the core material, and is covered with pure copper or dispersion strengthened copper on both sides.
  Besides, CMC has adjustable coefficient of thermal expansion, high thermal conductivity, and high thermal stability. The production process of it commonly uses method of rolling composite, plated composite and explosive forming. CMC is mainly used as the bottom expansion and thermal conductivity channel of the heat sink, the lead frame and the multilayer printed circuit board (PCB).

 

 

Type

Materials

Density
(g/cm³)

Thermal Conductivity
W/moK

CTE,
ppm/°K
20-100℃

Copper Metallaminate

1:1:1
Cu/Mo/Cu

9.27-9.47

300-310(x-y)
220-230(z)

9.6-10.0

1:2:1
Cu/Mo/Cu

9.48-9.68

270-280(x-y)
200-210(z)

8.5-8.9

1:3:1
Cu/Mo/Cu

9.6-9.8

240-250(x-y)
180-190(z)

7.7-8.1

1:4:1
Cu/Mo/Cu

9.7-9.9

210-220(x-y)
170-180(z)

6.8-7.2

1:5:1
Cu/Mo/Cu

9.74-9.94

195-200(x-y)
165-170(z)

6.2-6.6

13:74:13
Cu/Mo/Cu

9.78-9.98

210-220(x-y)
220-230(z)

5.7-6.1

1:7:1
Cu/Mo70/Cu

9.46

300-310(x-y)
170-180(z)

7.2