tured with the highest quality materials for reliable and
repeatable performance providing a cost effective
thermal management solution. These devices are
constructed with Aluminum Nitride (AlN) or Beryllium
Oxide (BeO) and are available in standard EIA form factors.
Q-Bridge provides the designer with the ability to manage
thermal conditions by directing heat to a thermal ground
plane, heat sink or any other specific thermal point
of interest. The inherently low capacitance makes
this device virtually transparent at RF / microwave
frequencies. This device has the added benefit of offering
additional layers of protection to adjacent components
from hot spot thermal loads.
Q-Bridge provides the benefit of increased overall cir-
cuit reliability. ATC’s Q-Bridge is manufactured using
one-piece construction, providing a RoHS compliant
SMT package that is fully compatible with high speed auto-
mated pick-and-place processing. It is available in various
EIA case sizes. Custom configurations are also available.
Applications:
• GaN Power Amplifiers
• High RF Power Amplifiers
• Filters
• Synthesizers
• Industrial Computers
• Switch Mode Power Supplies
• Pin & Laser Diodes
Features:
• High Thermal Conductivity
• Low Thermal Resistance
• Low Capacitance
• Increases Circuit Reliability
• RoHS Compliant
• More efficient thermal management
Functional Applications:
• Between active device and adjacent ground planes
• Specific contact pad to case
• Contact pad to contact pad
• Direct component contact to via pad or trace
• Edges fully metalized
Termination Materials
ATC Termination Code
Y
S
Termination Materials
Silver Platinum Non-Magnetic Termination
Silver over Magnetic Termination
Note: Non-edge wrapped style in all case sizes is supplied with S termination
Edge wrapped style in case sizes 0302 through 1111 is supplied with Y termination
Edge wrapped style in case sizes 2010 through 3737 are supplied with S termination
ATC # 001-1143
Rev. H, 7/17
ATC Q-BRIDGE THERMAL CONDUCTOR
Mechanical Configurations
t
L
W
L
t
W
T
T
Edge Wrapped
No Wrap
Typical Characteristics
Case
Size
Length (L)
Width (W)
Thickness
(T)
Terminal
(t)
Thermal
Thermal
Resistance (°C/W) Conductivity (mW/°C)
AlN
BeO
AlN
BeO
Available
Configurations
Style
Termination
W
Y
.030 ±.002
.020 ±.002
20
10
0302
19
12
53
81
(.77 ±.051)
(0.51 ±.051) (0.51 ±.05)
(0.25)
E
S
W
Y
.040 ±.002
.020 ±.002
20
10
0402
25
16
40
61
(1.02 ±.051) (0.51 ±.051) (0.51 ±.05)
(0.25)
E
S
W
Y
.050 ±.002
.050 ±.002
25
15
0505
10
7
100
153
(1.27 ± .051) (1.27 ±.051) (0.64 ±.05)
(0.38)
E
S
W
Y
.060 ±.002
.030 ±.002
25
15
0603
20
13
50
76
(1.52 ±.051)
(.76 ±.051)
(0.64 ±.05)
(0.38)
E
S
W
Y
.080 ±.002
.050 ±.002
40
20
0805
10
7
100
153
(2.03 ±.051) (1.27 ±.051) (1.02 ±.05)
(0.51)
E
S
W
Y
.100 ±.002
.050 ±.002
40
20
1005
13
8
77
122
(2.54 ±.051) (1.27 ±.051) (1.02 ±.05)
(0.51)
E
S
W
Y
.100 ±.002
.200 ±.002
40
20
1020
3
2
320
508
(2.54 ±.051) (5.08 ±.051) (1.02 ±.05)
(0.51)
E
S
W
Y
.110 ±.002
.110 ±.002
40
20
4
153
240
1111
7
(2.79 ±.051) (2.79 ±.051) (1.02 ±.05)
(0.51)
E
S
W
S
.195 ±.010
.095 ±.010
60
30
2010
10
6
100
159
(4.95 ±.254) (2.41 ±.254) (1.52 ±.05)
(0.77)
E
S
W
S
.240 ±.010
.250 ±.010
60
40
2525
4
3
240
380
(6.10 ±.254) (6.35 ±.254) (1.52 ±.05)
(1.02)
E
S
W
S
.370 ±.010
.245 ±.010
60
50
3725
6
4
160
254
(9.40 ±.254) (6.22 ±.254) (1.52 ±.05)
(1.27)
E
S
W
S
.365 ±.010
.375 ±.010
60
50
4
3
240
380
3737
(9.27 ±.254) (9.53 ±.254) (1.52 ±.05)
(1.27)
E
S
inches (mm)
Note: Thermal conductivity is normalized to chip size. All values are approximate. Consult factory for extended thermal conductivity options.
ATC Q-BRIDGE THERMAL CONDUCTOR
ATC Part Number Code
QB
Q-Bridge
Case Size
Substrate
A = AlN; B = BeO
Thickness (mils)
0603
A
25
W
Y
T
Packaging
T = Tape and Reel, std.
1000 pc., 7” Reel
500 pc., 7” Reel
C = ATC Matrix Tray
Termination
Y = Silver Platinum
Non-Magnetic Termination
S = Silver over Magnetic Termination
Style: W = Edge Wrap; E = No Wrap
The above part number refers to a Q-Bridge, (EIA case size 0603), Aluminum Nitride (AlN) substrate, Thickness 25 mils.,
Style W, Y Termination (Silver Platinum Non-Magnetic Termination), with Tape and Reel Packaging.
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.
For additional information and catalogs contact your ATC
representative or call direct at +1-631-622-4700.
Consult factory for additional performance data.
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/productfinder/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 line without prior notice.
