THE ENGINEERS’ CHOICE® www.atceramics.com
ATC AT Series 0603
RF/Microwave Attenuator
ATC’s new RF/ Microwave SMT Attenuator Series (AT) is
manufactured with the highest quality materials for reliable
and repeatable performance. These devices are constructed
with Aluminum Nitride (AlN) and are available in a standard
EIA 0603 case size. The AT Series exhibits excellent
performance characteristics for the most demanding RF/
Microwave applications.
The AT provides virtually at loss over a broad frequency
spectrum. Thin film metallization provides for very stable
characteristics over temperature and time. Its balanced
PI design provides even current distribution and accurate
attenuation characteristics from DC to 20 GHz. It is designed
to meet a wide range of RF and microwave large and small
signal level applications. The AT is ideal for impedance
matching, input padding, signal level tuning, and many
other critical RF/ Microwave applications. The AT is rated
highest power in class and is suitable for microstrip and CPW
applications.
The non-magnetic termination is available providing a range of
attachment options such as eutectic die-bonding, conductive
epoxies, and soldering. The AT is fully compatible with high
speed automated pick-and-place processing.
Typical applications: Telecommunications, Satellite Communi-
cations, Cellular Base Stations, Microwave Radio, ISM,
RF/ Microwave Power, Military /Aerospace, Test and
Measurement.
Functional applications: Impedance Matching, Input Padding,
Signal Level Tuning, Signal Conditioning.
Note: Consult Factory for other attenuation values, termination
styles and case sizes.
ENVIRONMENTAL SPECIFICATIONS
OPERATING TEMPERATURE: -55°C to +150°C
100% inspection Per MIL-STD-883
ELECTRICAL AND MECHANICAL
SPECIFICATIONS
NOMINAL IMPEDANCE: 50 Ohms
FREQUENCY RANGE: DC to 20 GHz
VALUES AVAILABLE: 0 to 10 dB (1 dB increments)
INPUT POWER CW:
1W: 0 to 6 dB
0.75W: 7 to 10 dB
VSWR:
1.25:1 typical
FREQUENCY RESPONSE (dB):
D.C. to 10 GHz: ±0.50 dB
>10 GHz: ±1 dB
SUBSTRATE MATERIALS: AlN (1 to 10 dB)
Al
2
O
3
(0 dB)
RESISTORS: Tantalum Nitride
TERMINAL:
Thin Film metal stack, Au
• Thin Film Design
• Power Rating Up to 1 watt
• Frequency Response
+/- 0.5 dB
• Characterized to 20 GHz
• CPW and Microstrip
Applications
• EIA 0603 SMT
• Highest Power in Class
• AlN construction
• Balanced Pi design
• Non-Magnetic
• RoHs compliant
ATC # 001-1149 Rev. C; 9/17
AMERICAN TECHNICAL CERAMICS
www.atceramics.com
ATC North America
sales@atceramics.com
ATC Asia
sales@atceramics-asia.com
ATC Europe
saleseur@atceramics.com
2
ATC AT 0603 T 03 E CA T D
Product Designation
Case Size
Power Rating:
T = 1 W (0 to 6 dB)
C = 3/4 W (7 to 10 dB)
Attenuation:
0 to 10 dB
Configuration
E = All Terminations wrapped and
patterned ground plane
Quantity
D = 1000, B = 500, 7 = 100, 3 = 25
Packaging
T = Tape & Reel: 7’’ reel, 1000 pcs.
C = Cap Pack, 100 pcs.
S= Snippet
Termination: CA = Non-Mag Gold
The above part number refers to an ATC AT 0603 Case Size with an attenuation of 3dB, 1W Power Rating, wrapped and patterned
ground plane configuration with Non-Mag Gold Termination and tape and reel packaging, 1000 pcs.
For additional information and catalogs contact your ATC
representative or call direct at (+1-631) 622-4700.
Consult factory for additional performance data.
ATC accepts orders for our parts using designations with or without the
“ATC” prefix. Both methods of defining the part number are equivalent, i.e.,
part numbers referenced with the “ATC” prefix are interchangeable to parts
referenced without the “ATC” prefix. Customers are free to use either in
specifying or procuring parts from American Technical Ceramics.
Mechanical Configurations
0.024
0.063
0.010
0.004 0.016
0.008
0.031
ø0.003
0.024
0.014
0.031
ø0.003
0.005 0.015
0.063
0.003
TOP
VIEW
BOTTOM
VIEW
0.010
Part Thickness .020 ± .001 (all values)
.042
.035
.028
.0055
.0055
.024
G
R
D
The Ground pad is also used to remove heat from the component.
Provisions must be made to connect to heat sink.
ATC PART NUMBER CODE
Dimensions are in inches
Dimensions are in inches
.
NOTE: e Ground pad is also used to remove heat from the component.
Provisions must be made to connect to heat sink.
AMERICAN TECHNICAL CERAMICS
www.atceramics.com
ATC North America
sales@atceramics.com
ATC Asia
sales@atceramics-asia.com
ATC Europe
saleseur@atceramics.com
3
Sales of ATC products are subject to the terms and conditions contained in American Technical Ceramics Corp. Terms and Conditions of Sale (ATC document #001-992).
Copies of these terms and conditions will be provided upon request. They may also be viewed on ATC’s website at www.atceramics.com/productnder/default.asp. Click
on the link for Terms and Conditions of Sale.
ATC has made every effort to have this information as accurate as possible. However, no responsibility is assumed by ATC for its use, nor for any infringements of rights of
third parties which may result from its use. ATC reserves the right to revise the content or modify its product without prior notice.
© 2016 American Technical Ceramics Corp. All Rights Reserved ATC # 001-1149 Rev. C; 9/17
ATC AT Series 0603 RF/Microwave Attenuator Performance Data
-8
-9
-6
-7
-12
-10
-11
-4
-5
-2
-3
Magnitude (dB)
RF/Microwave Attenuator Series Measured Data
Frequency (GHz)
0 2 4 6 8 10 12 14 16 18
0
-1 0 dB
1 dB
2 dB
3 dB
4 dB
5 dB
6 dB
7 dB
8 dB
9 dB
10 dB
-2
20
-8
-9
-6
-7
-10
-11
-4
-5
-2
-3
Magnitude (dB)
RF/Microwave Attenuator Series Modeled Data
Frequency (GHz)
0 5 10 15 20 25 30
0
-1 0 dB
1 dB
2 dB
3 dB
4 dB
5 dB
6 dB
7 dB
8 dB
9 dB
10 dB
RF / Microwave Attenuator Test Condition Description
All testing performed on 13.3-mil-thick Rogers RO4350 microstrip board, with the UUT subtending a 44 mil gap in a 30 mil-wide center trace (nominal
50-ohm characteristic impedance). Measurements were made using a four-receiver architecture. Measurements have been de-embedded to the edges of
the UUT using a standard TRL calibration procedure.
RF / Microwave Attenuator Modeled Data Description
Models were simulated using Ansoft HFSS version 14 in a perfect 50 ohm environment with ideal ports placed at the edge of the pads to ground. The
boundary condition was set to be a radiating boundary in air.