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Sapphire variable capacitor, 0.3 - 1.2 pF, 500V
Temex AT27263
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High-performance sapphire variable capacitors



More informations

These sapphire gigatrimmers have been selected among various types for their outstanding qualities. Our purpose is to suggest 3 types with very good performances better than other gigatrimmers and really top quality for RF and microwave applications.

Sapphire is the best material for: insulation, heat dissipation and Q in microwave performances. It is chemically completely inert with a very low moist absorption value, it is even better than alumina.

Even if is really small it is often used for high power applications.

Comparison chart among the best microwave materials
  Sapphire Alumina AL2O2 Quartz SiO2 Pure Teflon
Dielectric constant εr about 11 about 10 about 3.8 about 2,05
dissipation factor tanδ @ 10GHz < 0,0001 0,0002 0.0015 0.0003
Thermal stability good good good poor
Mechanical performance good good good poor
Thermal dissipation very good good average poor

Most important applications:

  • Very high Q, about 2 - 3 times more than other gigatrimmers, they are suitable for low noise VCO and oscillators till X band (12 GHz for model CVG-Z5 27263)
  • Appreciable applicable power ex. 50 W / 2 GHz tanks to the sapphire insulation and to the 500 work V (1000 V test and 1500V breaking), very good for medium power matching, they are often used on the final TX stage in 1.9 GHz mobile base radio station with 50 W
  • NP0 very high thermal stability, they are suitable for trimming inside oscillators, OCXO thermostat that works at high temperatures (+70°C/+90°C)
  • They are easy to mount, this kind of case is perfectly suitable for pcb mount, in fact for an easy tuning, the rotor that touches the screwdriver is directly soldered to the ground
  • Very reduced size and very fine tuning resolution with multi-turn regulation
  • It is suitable for military specification MIL STD 202E and C-14409
  • Grid
  • List
on sale -60%
Temex AT27263 Sapphire variable capacitor, 0.3 - 1.2 pF, 500V
Sapphire variable capacitor, 0.3 - 1.2 pF, 500V
Order code: CVG-Z5
Sapphire variable capacitor, 0.3 - 1.2 pF, 500V

Temex AT27263
Conditions: N (The product is brand new)
Min. capacitance: 0.3 pF
Max. capacitance: 1.2 pF
Rated voltage: 500 V
Q @ Freq.: > 5000 @ 250 MHz
Orientation: vertical
Mounting: SMD
Go to product page
CVG-Z5
Order code: CVG-Z5
Temex AT27263 
Stock: 3883 pcs
Price each
$21.06 $8.42
Volume discounts
 4+
$20.09
$8.03
 10+
$19.23
$7.69
 30+
$18.02
$7.21
 100+
$16.80
$6.72
 250+
$15.58
$6.23
 500+
$14.37
$5.75
 1000+
$13.15
$5.26
(VAT tax not included)
Minimum: 1
Multiple: 1
Compare
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on sale -60%
Temex AT27263
Bestseller
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Sapphire variable capacitor, 0.3 - 1.2 pF, 500V
Order code: CVG-Z5
Temex AT27263
  • N
  • 0.3 pF
  • 1.2 pF
  • 500 V
  • > 5000 @ 250 MHz
  • vertical
  • SMD
Stock: 3883 pcs
Minimum: 1 pc
Multiple: 1 pc
 1+
$21.06
$8.42
 4+
$20.09
$8.03
 10+
$19.23
$7.69
 30+
$18.02
$7.21
 100+
$16.80
$6.72
 250+
$15.58
$6.23
 500+
$14.37
$5.75
 1000+
$13.15
$5.26
(VAT tax not included)
 

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on sale -60%
Sapphire variable capacitor, 0.3 - 1.2 pF, 500V
Temex AT27263
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