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IMA Series Surface Mount
Thick Film Attenuator
T-Pad Family
IMA Series T-Pad family surface mount thick film attenuators are
compact, high performance devices especially suited to RF and
microwave applications. Performance is based on the attenuator
operating in a matched continuous 50 ohm system, with proper
device mounting and workmanship.
IMA T-Pad Family Specifications
Standard Impedance:
VSWR (Max):
50Ω Nominal
1.25:1 up to 4 GHz
1.35:1 @ 4 to 8 GHz
1.50:1 @ 8 to 12 GHz
.0001 dB/ dB/ deg. C *
2W (metalized baseplate maintained
below 100° C)
-55 deg. C to 150 deg. C
DC - 12.4 GHz
0.122” X 0.145” X 0.028” Max
Thick Film on 96% Alumina (Al
2
O
3
)
DC Attenuation Stability:
Power Rating:
Operating Temperature:
Frequency Range:
Standard Case Size:
Architecture:
For other substrate thicknesses, sizes and power levels, consult the factory.
40dB
To
Attenuation Accuracy (DC)
Increment
(dB)
1-3
4 - 19
20 - 30
31 - 40
Accuracy
+/-
+/-
+/-
+/-
0.2dB
0.3dB
0.5dB
1.0dB
0.2dB
Accuracy
At the circuit level,
with proper application
of RF principles, these
attenuators, and their
variations, are capable of
operating up to 20 GHz
with a managable VSWR.
* Based on TCR and resistor
tolerance at DC
2W
Input Power
Ordering Information
IMA2314-03D5 (Sample P/N)
IMAXXXX-XXDX
Part #
(See Reverse)
dB Increment
(0 denotes whole value)
(5 denotes whole value + .5dB
available to 9.5dB)
dB Whole Value (00-40)
International
Manufacturing
Services, Inc.
Tel (401) 683-9700
Fax (401) 683-5571
e-mail: ims@ims-resistors.com
http://www.ims-resistors.com
impossible made simple
Ver 1 05/2007 Specifications Subject to Change Without Notice
™
Wraparound Styles
IMA2314
Termination Style:
Termination Materials:
Attachment:
IMA2373
Termination Style:
Termination Material:
Attachment:
Full Wraparound
Platinum Silver
Solder or Epoxy
IMA2373 FRONT
IMA2373 BACK
Full Wraparound
Platinum Silver with Solder
Solder
IMA2314 FRONT
IMA2314 BACK
Single-Sided Styles
IMA2381
Termination Style:
Termination Material:
Attachment:
IMA2370
Termination Style:
Termination Materials:
Attachment:
Single-Sided with Backplane
Platimum Silver with Solder
Solder
Single-Sided
Platinum Silver
Solder or Epoxy
IMA2381 FRONT
IMA2381 BACK
IMA2370 FRONT
IMA2370 BACK
Single-Wrap Style (SG)
IMA2371
Termination Style:
Termination Materials:
Attachment:
Single-Wrap to Backplane
Platinum Silver with Solder
Solder
IMA2371 FRONT
IMA2371 BACK
S-Parameters, Mag. / Phase, 6dB T-Pad
1.0 To 10GHz - P/N: IMA2314-06D0
mounted to 0.015” thick, 50Ω alumina
FREQ
(GHz)
1.00
2.10
3.02
4.12
5.04
5.96
7.06
7.98
9.08
10.0
S11
mag
0.020
0.041
0.059
0.081
0.098
0.116
0.137
0.154
0.175
0.192
S11
phase
-91.995
-92.998
-94.046
-95.361
-96.473
-97.588
-98.926
-100.035
-101.358
-102.451
S21
mag
0.501
0.501
0.500
0.499
0.497
0.496
0.494
0.492
0.489
0.486
S21
phase
-1.799
-3.780
-5.428
-7.400
-9.038
-10.670
-12.617
-14.230
-16.153
-17.744
VSWR
1.040
1.086
1.126
1.175
1.218
1.263
1.317
1.365
1.423
1.474
Indicates RoHS
Compliant Part
Non-Magnetic
International
Manufacturing
Services, Inc.
impossible made simple
™
Tel (401) 683-9700
Fax (401) 683-5571
e-mail: ims@ims-resistors.com
http://www.ims-resistors.com
Ver 1 05/2007 Specifications Subject to Change Without Notice
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