TRIMMER CAPACITORS
Extended range Gigahertz trimmers
Extended range Gigahertz trimmers
Description
Extended range GigaHertz trimmer capacitors incorporate high quality dielectric ceramic that have
permitted a 25 to 35% size reduction, without sacrificing performances.
Characteristics
Same as standard Gigahertz trimmer capacitors
Technical data
Capacitance
Q factor
Temp. Coeff. Temp. Coeff.
Standard
range
Turns
at Max
ppm/°C
ppm/°C
Series
(pF)
capacitance
X=2
X=3
ATX757
series 0.8 – 8.0
>8
>3000 @100 MHz -50 ± 75 +400 ± 100
ATX758 series 0.6 – 4.5
>4
>3000 @250 MHz -50 ± 75 +400 ± 100
For models 7 and 8 add 0.05 pF to minimum capacitance
Standard
SM Series
AT SM 570
AT SM 580
Capacitance
range
(pF)
0.8 - 8.0
0.5 - 4.5
Q factor
at Max
capacitance
>3000 @ 100 MHz
>3000 @ 250 MHz
Temp. Coeff.
ppm/°C
50 ± 75
50 ± 75
Turns
>8
>4
Dimensions
Same as sizes 7 and 8 and SM 270 and SM 280 of standard Gigahertz trimmer capacitors.
Extended range Gigahertz trimmers
with linear capacitance variation
Description
AT SM 571, extended range Gigahertz trimmer capacitor with linear variation of capacity from 0.8 to
6.0 pF horizontal Surface Mount model.
,
Technical data
Reference
AT SM 571
Capacitance
range
(pF)
0.8 - 6.0
Q factor
at Max
capacitance
>3000 @ 250 MHz
Temp. Coeff.
ppm/°C
50 ± 75
Turns
>8
Dimensions
Similar to AT SM 270.
5-14
Vol. 1
SALES OFFICES: VISIT OUR WEB SITE AT
http://www.temex.net
TRIMMER CAPACITORS
Extended range Gigahertz trimmers
How to order?
Ex : AT 27263
AT
2
↓
Temperature
coefficient
2: low TC
3: high TC
7
2
↓
Dielectric
material
2: Sapphire
5: Ceramic
6
↓
Size
3
↓
Model
Ex : AT SM 280
AT
SM
↓
2
↓
Dielectric
material
2: Sapphire
5: Ceramic
8
↓
Size
0
Packaging
Bulk
Tape and reel
TEMEX standard bulk packaging
In accordance with IEC 286.3 specification.
Parts are delivered with permanent seal cap.
Add suffix RF to TEMEX p/n.
Carrier tape
16 mm
16 mm
24 mm
16 mm
12 mm
16 mm
24 mm
Units
500 p / 13’ reel
500 p / 13’ reel
500 p / 13’ reel
500 p / 13’ reel
500 p / 7’ reel
500 p / 7’ reel)
500 p / 7’ reel
References
Size and model
63, 68
73
78
83, 87, 88,
SM 260, SM 280
SM 270
SM 290
Note 1 : Gigahertz capacitors size 6 can be delivered with permanent sealing cap AT69600
Gigahertz capacitors size 7, 8 and 9 can be delivered with permanent sealing cap AT69700
With permanent sealing cap, total length A is increased by 0.1 mm
Note 2 : For fixing hole layout dimensions and tolerances, consult
page 5-38.
Note 3 : Rotors of Gigahertz capacitors size 7, 8 and 9 can be delivered with hexagonal drive hole for
automatic tuning.
Note 4 : Custom designs available upon request
Recommended TEMEX tuning tools
AT8762 for size 6
AT8777 for sizes 7, 8 and 9
SALES OFFICES: VISIT OUR WEB SITE AT
http://www.temex.net
5-15
Vol. 1
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