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Microwave air variable capacitors



More informations

The concept of air coaxial giga trimmer is not new, even Philips in the 60's built very good variable coaxial capacitors used in the first hybrid RX/TX mobile stations (transistors and vacuum tubes in the TX final stage) for professional version and consumer version for TV tuners.

Gigatrimmers are used in RF in particulary critical situations, for example in crystal high stability oscillators tuning, on filters or high Q resonant circuits or even for quite high powers, the main features are:

  • A high Q given by air dielectric and by the particular mechanical design that reduces parasitic parameters.
  • An insulation voltage between 250 and 500 work voltage and better thermal stability (almost all are NPO).
  • High RF power especially for 500 work voltage ultra-miniature sapphire types.
  • High self-resonant frequency, between 1 and 12 GHz (depends on type and capacity).
  • Slow regulation due to a multi turn variation and so better repeatability in tuning.
GIGATRIMMER TYPE CVG-N1 AIR GIGATRIMMER
   
A = STATOR   B = PORCELAIN BODY
C = ROTOR

APPLICATIONS
suitable for pcb mount, a double ground pin guarantees a perfect connection with half series inductance. It is provided with anti-dust cap

MOBILE PART(ROTOR)
by rotating the rotor it enters in the stator changing the capacity, the concentric circles are needed to reach the desired capacity

MECHANICAL PRECISION
it is achived with particular process and small size tolerances. The mechanical hardiness is guaranted by a porcelain ceramic body that supports the rotor and the stator

 

Classification of gigatrimmer depending on the type of mounting
Universal
mounting
Air or PCB
mounting
Chassis (or panel)
mounting
PCB
Mounting
They have leads for pcb or air mount but also the nut for chassis mount They have leads for pcb or air mount They have no leads so they can be mounted only on chassis or panel CVG-W… types SMD mount
 example: example of vertical mount: example provided of cap and nut:  
  example of horizontal mount: cheap version because it has no thread, it has to be soldered directly to the panel:  

 

pcb mount holes (in this example 3 leads) protection cap (if provided)   
leads chassis mount nut (if provided)
  • Grid
  • List
Airtronic 5801 Air variable capacitor, 0.35 - 3.5 pF, 250V
Air variable capacitor, 0.35 - 3.5 pF, 250V
Order code: CVG-A2
Air variable capacitor, 0.35 - 3.5 pF, 250V

Airtronic 5801
Conditions: N- (The product is brand new but it comes from an old production)
Min. capacitance: 0.35 pF
Max. capacitance: 3.5 pF
Rated voltage: 250 V
Q @ Freq.: > 10000 @ 100 MHz
Housing: porcelain
Orientation: horizontal
Mounting: PCB
Go to product page
CVG-A2
Order code: CVG-A2
Airtronic 5801 
Stock: 1475 pcs
Price each
$7.19
Volume discounts
 10+
$6.76
 50+
$6.34
 100+
$5.91
 250+
$5.69
 500+
$5.56
(VAT tax not included)
Minimum: 1
Multiple: 1
Compare
Johanson 8051 Air variable capacitor, 0.6 - 3.5 pF, 250V
Air variable capacitor, 0.6 - 3.5 pF, 250V
Order code: CVG-B1
Air variable capacitor, 0.6 - 3.5 pF, 250V

Johanson 8051
Conditions: N (The product is brand new)
Min. capacitance: 0.6 pF
Max. capacitance: 3.5 pF
Rated voltage: 250 V
Q @ Freq.: > 10000 @ 100 MHz
Housing: porcelain
Orientation: vertical
Mounting: PCB
Go to product page
CVG-B1
Order code: CVG-B1
Johanson 8051 
Stock: 440 pcs
Price each
$7.19
Volume discounts
 10+
$6.76
 50+
$6.34
 100+
$5.91
(VAT tax not included)
Minimum: 1
Multiple: 1
Compare
Microelectronics Ltd. MAV01E05 Air variable capacitor, 0.6 - 5 pF, 250V
Air variable capacitor, 0.6 - 5 pF, 250V
Order code: CVG-B2
Air variable capacitor, 0.6 - 5 pF, 250V

Microelectronics Ltd. MAV01E05
Conditions: N (The product is brand new)
Min. capacitance: 0.6 pF
Max. capacitance: 5 pF
Rated voltage: 250 V
Q @ Freq.: > 7500 @ 100 MHz
Housing: porcelain
Orientation: vertical
Mounting: PCB
Go to product page
CVG-B2
Order code: CVG-B2
Microelectronics Ltd. MAV01E05 
Stock: 160 pcs
Price each
$7.41
Volume discounts
 10+
$6.98
 30+
$6.66
(VAT tax not included)
Minimum: 1
Multiple: 1
Compare
Temex AT5553 Air variable capacitor, 1.5 - 25 pF, 250V
Air variable capacitor, 1.5 - 25 pF, 250V
Order code: CVG-B4
Air variable capacitor, 1.5 - 25 pF, 250V

Temex AT5553
Conditions: N- (The product is brand new but it comes from an old production)
Min. capacitance: 1.5 pF
Max. capacitance: 25 pF
Rated voltage: 250 V
Q @ Freq.: > 1000 @ 100 MHz
Housing: porcelain
Orientation: vertical
Mounting: PCB
Go to product page
CVG-B4
Order code: CVG-B4
Temex AT5553 
Stock: 24 pcs
Price each
$13.53
Volume discounts
 4+
$12.78
 10+
$12.13
 25+
$11.60
 50+
$11.17
(VAT tax not included)
Minimum: 1
Multiple: 1
Compare
Sprague-Goodman GDT10026 Air variable capacitor, 1.5 - 10 pF, 250V
Air variable capacitor, 1.5 - 10 pF, 250V
Order code: CVG-Q1
Air variable capacitor, 1.5 - 10 pF, 250V

Sprague-Goodman GDT10026
Conditions: N (The product is brand new)
Min. capacitance: 1.5 pF
Max. capacitance: 10 pF
Rated voltage: 250 V
Q @ Freq.: > 800 @ 1 MHz
Housing: glass
Orientation: vertical
Mounting: PCB
Go to product page
CVG-Q1
Order code: CVG-Q1
Sprague-Goodman GDT10026 
Stock: 816 pcs
Price each
$4.19
Volume discounts
 10+
$3.87
 30+
$3.54
 100+
$3.22
(VAT tax not included)
Minimum: 1
Multiple: 1
Compare
AFM Microelectronics Inc MPT51101A Air variable capacitor, 0.8 - 8.5 pF, 750V
Air variable capacitor, 0.8 - 8.5 pF, 750V
Order code: CVG-Q4
Air variable capacitor, 0.8 - 8.5 pF, 750V

AFM Microelectronics Inc MPT51101A
Conditions: N- (The product is brand new but it comes from an old production)
Min. capacitance: 0.8 pF
Max. capacitance: 8.5 pF
Rated voltage: 750 V
Q @ Freq.: > 500 @ 20 MHz
Housing: glass
Orientation: horizontal
Mounting: PCB
Go to product page
CVG-Q4
Order code: CVG-Q4
AFM Microelectronics Inc MPT51101A 
Stock: 219 pcs
Price each
$2.56
Volume discounts
 5+
$2.34
 10+
$2.19
 50+
$2.08
 100+
$1.99
(VAT tax not included)
Minimum: 1
Multiple: 1
Compare
Sprague-Goodman VC20GY  Air variable capacitor, 0.8 - 12 pF, 750V
Air variable capacitor, 0.8 - 12 pF, 750V
Order code: CVG-Q5
Air variable capacitor, 0.8 - 12 pF, 750V

Sprague-Goodman VC20GY
Conditions: N (The product is brand new)
Min. capacitance: 0.8 pF
Max. capacitance: 12 pF
Rated voltage: 750 V
Q @ Freq.: > 500 @ 20 MHz
Housing: glass
Orientation: horizontal
Mounting: chassis, PCB
Go to product page
CVG-Q5
Order code: CVG-Q5
Sprague-Goodman VC20GY  
Stock: 508 pcs
Price each
$3.22
Volume discounts
 10+
$2.90
 30+
$2.68
 100+
$2.52
 250+
$2.42
(VAT tax not included)
Minimum: 1
Multiple: 1
Compare
Sprague-Goodman JFD DC434Y Air variable capacitor, 2 sections 2.5 - 12 pF, 250V
Air variable capacitor, 2 sections 2.5 - 12 pF, 250V
Order code: CVG-R
Air variable capacitor, 2 sections 2.5 - 12 pF, 250V

Sprague-Goodman JFD DC434Y
Conditions: N (The product is brand new)
Min. capacitance: 2.5 pF
Max. capacitance: 12 pF
Rated voltage: 250 V
Housing: glass
Orientation: horizontal
Mounting: PCB
Go to product page
CVG-R
Order code: CVG-R
Sprague-Goodman JFD DC434Y 
Stock: 29 pcs
Price each
$3.76
(VAT tax not included)
Minimum: 1
Multiple: 1
Compare
Showing 1 - 8 of 8 results
Airtronic 5801
 
(0 comments)
Air variable capacitor, 0.35 - 3.5 pF, 250V
Order code: CVG-A2
Airtronic 5801
  • N-
  • 0.35 pF
  • 3.5 pF
  • 250 V
  • > 10000 @ 100 MHz
  • porcelain
  • horizontal
  • PCB
Stock: 1475 pcs
Minimum: 1 pc
Multiple: 1 pc
 1+
$7.19
 10+
$6.76
 50+
$6.34
 100+
$5.91
 250+
$5.69
 500+
$5.56
(VAT tax not included)
 

Compare
Johanson 8051
Bestseller
(0 comments)
Air variable capacitor, 0.6 - 3.5 pF, 250V
Order code: CVG-B1
Johanson 8051
  • N
  • 0.6 pF
  • 3.5 pF
  • 250 V
  • > 10000 @ 100 MHz
  • porcelain
  • vertical
  • PCB
Stock: 440 pcs
Minimum: 1 pc
Multiple: 1 pc
 1+
$7.19
 10+
$6.76
 50+
$6.34
 100+
$5.91
(VAT tax not included)
 

Compare
Microelectronics Ltd. MAV01E05
 
(0 comments)
Air variable capacitor, 0.6 - 5 pF, 250V
Order code: CVG-B2
Microelectronics Ltd. MAV01E05
  • N
  • 0.6 pF
  • 5 pF
  • 250 V
  • > 7500 @ 100 MHz
  • porcelain
  • vertical
  • PCB
Stock: 160 pcs
Minimum: 1 pc
Multiple: 1 pc
 1+
$7.41
 10+
$6.98
 30+
$6.66
(VAT tax not included)
 

Compare
Temex AT5553
 
(0 comments)
Air variable capacitor, 1.5 - 25 pF, 250V
Order code: CVG-B4
Temex AT5553
  • N-
  • 1.5 pF
  • 25 pF
  • 250 V
  • > 1000 @ 100 MHz
  • porcelain
  • vertical
  • PCB
Stock: 24 pcs
Minimum: 1 pc
Multiple: 1 pc
 1+
$13.53
 4+
$12.78
 10+
$12.13
 25+
$11.60
 50+
$11.17
(VAT tax not included)
 

Compare
Sprague-Goodman GDT10026
 
(0 comments)
Air variable capacitor, 1.5 - 10 pF, 250V
Order code: CVG-Q1
Sprague-Goodman GDT10026
  • N
  • 1.5 pF
  • 10 pF
  • 250 V
  • > 800 @ 1 MHz
  • glass
  • vertical
  • PCB
Stock: 816 pcs
Minimum: 1 pc
Multiple: 1 pc
 1+
$4.19
 10+
$3.87
 30+
$3.54
 100+
$3.22
(VAT tax not included)
 

Compare
AFM Microelectronics Inc MPT51101A
 
(0 comments)
Air variable capacitor, 0.8 - 8.5 pF, 750V
Order code: CVG-Q4
AFM Microelectronics Inc MPT51101A
  • N-
  • 0.8 pF
  • 8.5 pF
  • 750 V
  • > 500 @ 20 MHz
  • glass
  • horizontal
  • PCB
Stock: 219 pcs
Minimum: 1 pc
Multiple: 1 pc
 1+
$2.56
 5+
$2.34
 10+
$2.19
 50+
$2.08
 100+
$1.99
(VAT tax not included)
 

Compare
Sprague-Goodman VC20GY
 
(1 comment)
Air variable capacitor, 0.8 - 12 pF, 750V
Order code: CVG-Q5
Sprague-Goodman VC20GY
  • N
  • 0.8 pF
  • 12 pF
  • 750 V
  • > 500 @ 20 MHz
  • glass
  • horizontal
  • chassis, PCB
Stock: 508 pcs
Minimum: 1 pc
Multiple: 1 pc
 1+
$3.22
 10+
$2.90
 30+
$2.68
 100+
$2.52
 250+
$2.42
(VAT tax not included)
 

Compare
Sprague-Goodman JFD DC434Y
 
(0 comments)
Air variable capacitor, 2 sections 2.5 - 12 pF, 250V
Order code: CVG-R
Sprague-Goodman JFD DC434Y
  • N
  • 2.5 pF
  • 12 pF
  • 250 V
  • glass
  • horizontal
  • PCB
Stock: 29 pcs
Minimum: 1 pc
Multiple: 1 pc
 1+
$3.76
(VAT tax not included)
 

Compare
Showing 1 - 8 of 8 results

Best sellers

Air variable capacitor, 0.6 - 3.5 pF, 250V
Johanson 8051
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