SURFACE MOUNT TRIMMER CAPACITORS
VT & SM Series
VT & SM SERIES
SURFACE MOUNT SAPPHIRE TRIMMER CAPACITORS
Description
As a new mounting style,
Gigahertz trimmers VT and SM SERIES
are multiturn sapphire dielectric
trimmer capacitors in surface mount packages, available on tape and reel , specially designed for reflow
soldering process and volume RF applications like cellular base stations.
Sapphire was selected as the dielectric offering the best performance trade-offs at such frequencies.
VT and SM series incorporate the self locking constant torque drive mechanism. The VT series offer
a vertical tuning axis with a good mechanical stability on the circuit board ; VT series include a permanent
sealing cap which allows easy access to the tuning rotor. The SM series offer a rectangular outline
with horizontal tuning axis ; any faxe of SM series can be soldered directly onto a surface mount PCB.
External outlines of VT series and SM series are suitable for tape and reel packing and facilitate their
use with automatic pick an place machines.
Features
Applications
•
•
•
•
•
•
High Q and high resonant frequency
Excellent tuning stability and low dynamic noise
Low temperature coefficient
Very fine tuning resolution
Resistant to soldering heat
Meets MIL-C-14 409 and ESA/SCC 3010
•
•
•
•
Base station amplifier
Filter tuning
Crystal trimming
Impedance matching
VT SERIES
SM SERIES
SALES OFFICES
AMERICA: +1 (602) 780 1995
BELGIUM: +32 (0) 2 7159020
FRANCE: +33 (0) 01 49884900
/
WEB SITE: http://www.tekelec-temex.com
10-3
ASIA PACIFIC: +852 2813 9826
GERMANY: +49 (0) 895164-0
ITALY: +39 (0) 2 58 01 91 06
/
EUROPE: +33 (0) 1 49884900
/
AFRICA: +33 (0) 1 49884900
NL: +31 (0) 793461430
UK: +44 (0) 1256 883340
NORDIC: +46 (0) 8 590 303 00
SPAIN: +34 (0) 1 3204160
SURFACE MOUNT SAPHIRE TRIMMER CAPACITORS
VT & SM Series
Characteristics
Torque
SM260 & VT260
All others
Rotational life
Insulation
resistance
Contact
resistance
Self resonant
frequency
Vibration
Measured at 75%
Max. capacitance
Shock
Average
30 cN.cm
60 cN.cm
Meets
MIL-C-14490D
Measured at 25°C
and 50% RH
Low dynamic
noise
Operates B to
C band
MIL-STD-202 E
Method 204 C
MIL-STD-202 E
Method 213 B
Range
∆
Cvs
Rotation
See table
See curve
Linear over
wide range
Typical Breakdown
@ sea level
> 1500 VDC
Measured at
max. capacitance
Stable over
full range
7 to 70 cN.cm
14 to 130 cN.cm
> 800 revolutions
>10
4
MΩ
@ 500 VDC
< 0.01
Ω
See curve
60 g 10 - 2000 Hz
100 g 6 ms
Rated 500 VDC
Voltage
Min. Q @ 250 MHz
Operating
temperature
Thermal shock
Temperature
coefficient
Test 1000 VDC
> 3500
See table
-55° C to +125° C
-55° C to +125° C
See table
Technical data
Tekelec part
number
(pF)
VT260
VT270
VT280
SM260
SM270
SM280
SM290
* 100 MHz
Capacitance
range
0.3 - 1.2
0.6 - 4.5
0.4 - 2.5
0.8 - 8.0
Temperature
coefficient
(ppM/°C)
0 ± 50
0 ± 50
0 ± 50
0 ± 75
Q factor
at
250 MHz
> 3500
> 2000
> 2500
> 2000 *
Q factor
Self-resonant frequency
SM270
VT270
Q factor
SM 290
SM 270
VT270
SM 280
VT280
SM 260
VT260
SM280
VT280
SM260
VT260
Frequency MHz
GHz
SALES OFFICES
WEB SITE: http://www.tekelec-temex.com
/
ASIA PACIFIC: +852 2813 9826
GERMANY: +49 (0) 89 51 64-0
ITALY: +39 (0) 2 58 01 91 06
/
EUROPE: +33 (0) 1 49 88 49 00
/
AFRICA: +33 (0) 1 49 88 49 00
NL: +31 (0) 79 3461430
UK: +44 (0) 1256 883340
10-4
AMERICA: +1 (602) 780 1995
BELGIUM: +32 (0) 2 715 90 20
FRANCE: +33 (0) 01 49 88 49 00
NORDIC: +46 (0) 8 590 303 00
SPAIN: +34 (0) 1 320 41 60
SURFACE MOUNT SAPHIRE TRIMMER CAPACITORS
VT & SM Series
Outline drawings
VT SERIES
A ± 0.1
B ± 0.4
C ± 0.1
D ± 0.1
E ± 0.1
F ± 0.1
G ± 0.1
Adjusting
slot
VT 260
1.9
5.9
3.1
5.6
4.6
3.1
2.6
1.1 typ x 0.25 w
x 0.4 deep
VT 270
VT 280
3.0
3.0
8.1
5.9
4.1
3.1
6.6
6.6
5.6
5.6
4.1
4.1
3.7
3.7
1.9 typ x 0.4 w
x 0.4 deep
Dimensions in mm
External electrodes are tin plated under nickel
SM SERIES
Adjusting slot
B
C
SM260 SM270 SM280 SM290
A ± 0.05
3.0
4.0
4.0
4.0
B ± 0.3
6.4
8.8
6.6
13.1
C ± 0.3
5.1
7.6
5.1
11.4
D ± 0.05
0.8
1.0
1.0
1.0
E ± 0.1
2.8
3.8
3.8
3.8
F ± 0.05
1.9
3.0
3.0
3.0
Adjusting
1.1 typ x
1.9 typ x 0.4 w x 0.4 deep
slot
0.5 w x 0.4 deep
Dimensions in mm
External electrodes are gold plated under nickel
D
A
D
Packaging
Tape & reel:
TEKEMEC TEMEX tape and reel packaging is in accordance with EIA-481 specification
VT series
Tape width:
VT260: 16 mm
VT270 and VT280: 24 mm
Quantity per reel : 13 inch diameter : 500
SM series
Tape width : SM260 and SM280 : 12 mm
SM 270 : 16 mm
SM 290 : 24 mm
Quantity per reel :
7 inch diameter : 500
13 inch diameter : 2000
Bulk:
TEKELEC TEMEX standard bulk packaging
SALES OFFICES
AMERICA: +1 (602) 780 1995
BELGIUM: +32 (0) 2 715 90 20
FRANCE: +33 (0) 01 49 88 49 00
/
WEB SITE: http://www.tekelec-temex.com
ØF
A
E
10-5
ASIA PACIFIC: +852 2813 9826
GERMANY: +49 (0) 89 51 64-0
ITALY: +39 (0) 2 58 01 91 06
/
EUROPE: +33 (0) 1 49 88 49 00
/
AFRICA: +33 (0) 1 49 88 49 00
NL: +31 (0) 79 3461430
UK: +44 (0) 1256 883340
NORDIC: +46 (0) 8 590 303 00
SPAIN: +34 (0) 1 320 41 60
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