Surface Mount
Terminations
Using EMC’s patented asymmetrical wrap geometry (U.S.
Patent # 5,739,743), the thermal dissipation of the surface
mount terminations is improved by increasing the
solderable terminal area. This eliminates the need for bolt
down heat sinks and tabs, reducing assembly costs.
General Specifications
Nominal Impedance . . . . . . . . . . . .50 Ohms ± 5%
Frequency Range . . . . . . . . . . . . . . DC to 2.7 GHz
Power Rating . . . . . . . . . . . . . . . .10 to 150 Watts
Power Derating . . . . . . . . . . . . . . 100% @ 100° C
Derates to 0% @ 150° C
Operating Temperature . . . . . . . . -55° C to 150° C
Ordering Information
SMT
20
LENGTH
12
= 0.12"
20
= 0.20"
25
= 0.245"
37
= 0.37"
10
PERFORMANCE
(blank) = Standard
T
= Telecom Tuned
ALN
S
PRETINNING
(blank) = Standard
S
= Pretinning
F
= Lead Free
Material Specifications
Substrates . . . . . . . . . . . . . . . . . . . . . . BeO or AlN
Resistive Material . . . . . . . . . . . . . . . . . Thick Film
Termination Material . . . . . . . . . . . . . . . Thick Film,
Nickel Barrier, Solder Plated Finish
MOUNTING
SMT
= Surface Mount
WIDTH
06
= 0.06"
10
= 0.10"
SUBSTRATE MATERIAL
25
= 0.245" (blank) = BeO (Beryllium Oxide)
37
= 0.37"
ALN
= AlN (Aluminum Nitride)
Note: Not every combination of size is available.
See selection table on page 37.
Other ohms values available upon request. Please contact factory.
EMC Technology
8851 SW Old Kansas Ave. Stuart FL 34997 (772) 286-9300 (800) 544-5594 www.emct.com
36
A Smiths Group company
Surface Mount
Terminations
Selection Table
Power Substrate Freq. Max.
(W) Avg.
Type
(GHz) VSWR
10
15
20
20
30
50
60
75
80
80
125
100
100
150
AlN
BeO
AlN
AlN
BeO
AlN
AlN
BeO
AlN
AlN
BeO
AlN
AlN
BeO
2.0
2.0
2.7
2.0
2.0
2.7
2.0
2.0
2.7
2.0
2.0
2.7
2.0
2.0
1.25
1.25
1.15
1.25
1.25
1.15
1.25
1.25
1.15
1.25
1.25
1.20
1.35
1.35
L
0.120
0.120
0.200
0.200
0.200
0.245
0.245
0.245
0.370
0.370
0.370
0.372
0.372
0.372
Dimensions (inches)
W
T
TW
0.060
0.060
0.100
0.100
0.100
0.245
0.245
0.245
0.245
0.245
0.245
0.372
0.372
0.372
0.026
0.026
0.026
0.041
0.041
0.041
0.041
0.041
0.041
0.041
0.041
0.051
0.051
0.051
0.054
0.054
0.050
0.090
0.090
0.040
0.120
0.120
0.045
0.120
0.120
0.050
0.175
0.175
A
0.025
0.025
0.020
0.020
0.020
0.030
0.030
0.030
0.045
0.045
0.045
0.040
0.040
0.040
B
0.025
0.025
0.035
0.035
0.035
0.025
0.025
0.025
0.045
0.045
0.045
0.040
0.040
0.040
Part
Number
SMT1206ALN
SMT1206
SMT2010TALN
SMT2010ALN
SMT2010
SMT2525TALN
SMT2525ALN
SMT2525
SMT3725TALN
SMT3725ALN
SMT3725
SMT3737TALN
SMT3737ALN
SMT3737
Dimensions
EMC Technology
8851 SW Old Kansas Ave. Stuart FL 34997 (772) 286-9300 (800) 544-5594 www.emct.com
37
A Smiths Group company
模拟与混合信号
