MAS110S

4/9

THERMAL AND MECHANICAL DATA

Conditions

Min.

Max.

Units

Thermal resistance - junction to case

(Thyristor or diode)

R

th(j-c)

Symbol

Parameter

dc

0.21

-

Mounting force 6Nm

with mounting compound.

Thermal resistance - case to heatsink

(Thyristor or diode)

0.07

-

R

th(c-h)

125

T

vj

Virtual junction temperature

T

stg

Storage temperature range

V

isol

Isolation voltage

-

2.5

kV

-40

125

-40

-

-

125

-

T

op

Operating temperature range

Commoned terminals to base plate.

AC RMS, 1 min, 50Hz.

-

Mounting torque

-

6.0

Nm

ORDERING INFORMATION

The module type number is made up as follows:

MAS XXX S XX W

Nominal I

F(AV)

at T

case

= 75˚C

Single thyristor/diode configuration

Voltage grade. V

DRM

/100

Turn-off time code

Examples:

MAS 110 S 12 W

MAS 110 S 08 X

MODULE MOUNTING RECOMMENDATIONS

s Adequate heatsinking is required to maintain the base

temperature at 75

dissipation may be calculated by use of V

and loss curves in accordance with standard formulae. We can

provide assistance with calculations or choice of heatsink if required.

s The heatsink surface must be smooth and flat; a surface finish

of N6 (32

µin) and a flatness within 0.05mm (0.002") are

recommended.

s Immediately prior to mounting, the heatsink surface should be

lightly scrubbed with fine emery, Scotch Brite™ or a mild chemical

etchant and then cleaned with a solvent to remove oxide build up

and foreign material. Care should be taken to ensure no foreign

particles remain.

s An even coating of thermal compound (eg. Unial) should be

applied to both the heatsink and module mounting surfaces. This

should ideally be 0.05mm (0.002") per surface to ensure optimum

thermal performance.

s After application of thermal compound, place the module squarely

over the mounting holes, (or 'T' slots) in the heatsink. Using a

torque wrench, slowly tighten the recommended fixing bolts at

each end, rotating each in turn no more than 1/4 of a revolution at

a time. Continue until the required torque of 6Nm (55lb.ins) is

reached at both ends.

s It is not acceptable to fully tighten one fixing bolt before starting

to tighten the others. Such action may DAMAGE the module.

Pressure contact asymmetric thyristor/diode module