AN2027

Mounting recommendations for M174, M177 and M244

Doc ID 10738 Rev 2

3/5

M177

0.550 DIA 4L

non herm

w/flange

Cu-Mo-Cu

ALLOY 42

(Fe58 /

Ni42)

BeO

(99.5%

min)

Au (60µ min)

over Ni (100µ

min / 350µ max)

Au (100µ min)

over Ni (100µ

min / 350µ

max)

0.6

0.75

M244

2x

0.400x0.425

wide 2l lap n/h

flange

W (85%) -

Cu (15%)

ALLOY 42

(Fe58 /

Ni42)

BeO(99.

5% min)

Au (60µ min) over Ni (100µ min /

350µ max)

0.6

0.75

Table 1.

DMOS packages - list of materials (continued)

Package

type

Description

Flange

Leadframe

Ceramic

insulator

Plating

Torque

(Nm)

Leads

Flange

Min.

Max.