ims
Tel (401) 683-9700
Fax (401) 683-5571
e-mail: ims@ims-resistors.com
http://www.ims-resistors.com
International
Manufacturing
Services, Inc.
IAX Series Surface Mount
Thick Film Attenuator
IAX Series surface mount thick film attenuators are compact,
high performance devices especially suited to RF and microwave
applications. For bondable terminations, other substrate thicknesses
or other sizes and power levels, consult the factory.
Other case sizes and values are available upon request1 and
are often delivered in half the lead times of most competitors.
IAX Series
Case
Dimensions
Power Rating2
0706
0.075” x 0.060” x 0.020” Max
300mW
0805
0.080” x 0.050” x 0.020” Max
400mW
1206
0.126” x 0.063” x 0.020” Max
1W
2010
0.197’’ x 0.097’’ x 0.028’’ Max
3W
2512
0.248” x 0.126” x 0.028” Max
5W
3725
0.375” x 0.250” x 0.028” Max
15W
IAX Series Specifications
Impedance:
50Ω Nominal
VSWR (Max)3:
1.3:1 up to 18 GHz
DC Attenuation Stability:
.0001dB/ dB/ deg. C4
Operating Temperature:
-55 deg. C. to 150 deg. C.
Attachment:
Solder or Epoxy
Architecture:
Thick Film on 96% Alumina (Al2O3)
Attenuation Accuracy (DC)
Increment
Accuracy
(dB)
1 - 3
+/- 0.2dB
4 - 13
+/- 0.3dB
13 - 70
+/- 0.5dB
impossible made simple
1 Consult factory
2 With 100 deg. C baseplate
3 Mounted in a matched
continuous 50 ohm system
4 Based on TCR and resistor
tolerance at DC
5 Groundpads must be shorted
during assembly
IAX Ver 4 5/2008 Specifications Subject to Change Without Notice
To
70dB
To
0.2dB
Accuracy
To
15W
Input Power
Input
/ Output
Input
/ Output
Wr
aps
to
Gr
oundpad
Bac
k of
Chip
Suggest
ed
Fo
otprint
(S
ee
fo
otnot
e 5)
Gr
oundpad
Gr
oundpad
Input
/ Output
Input
/ Output
Gr
oundp
ad
Suggest
ed
Fo
otprin
t
(S
ee
foo
tnot
e 5)
Bac
k of
Chip
Input
/ Output
Input
/ Output
Wr
aps
to
Gro
undpad
Gr
oundp
ad
WA Style
SG Style
SAMPLE P/N:
IA3-1206SG02D5
Prefix for attenuators
screened on Alumina
Termination Metallization:
-3 PtAg
-C PtAg w/ Solder
dB Increment
(D0 denotes whole value)
-OR-
(D5 denotes whole value + .5dB
available up to 16.5dB)
dB Whole Value (00-70)
Termination Style:
-SG Single Wrap to Groundplane
-WA Wraparound
-SS Single Sided (0706 ONLY)
Case Size:
0706
1206
2512
0805
2010
3725
Input
/ Outpu
t
Input
/ Output
Te
rminals
to
be
Shor
ted
Sugg
est
ed
Fo
otprint
Moun
t F
ac
e Do
wn
Input
/ Output
Input
/ Output
(to
shor
t top
te
rminals)
SS Style
TO
P
TO
P
TO
P
BA
CK
BA
CK
BO
ARD
BO
ARD
BO
ARD