Variable Trimmer Capacitors

Variable trimmer capacitors are types of capacitors(devices which store electrical charge in circuits) where the capacitor capacitance (its ability to store electrical charge) can be readily adjusted. They're often used in LC circuits (circuits that have an inductor and a capacitor) to set the frequency, for example to tune a radio.

How do variable trimmer capacitors work?

Variable trimmer capacitors are used to initially set oscillator frequency values, rise and fall times and other variables in a circuit. Should the values drift over time, variable trimmer capacitors allow you to re-calibrate your equipment.

Variable trimmer capacitors are almost always mounted directly on a PCB (printed circuit board) and set by using a small screwdriver. Variable trimmer capacitors are usually cheaper than full-sized variable capacitors.

What are variable trimmer capacitor used for?

Common applications include oscillators, tuners, crystal oscillators and filters. Variable trimmer capacitors can also be found in communication equipment such as mobile radios and aerospace transmitters.


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Description Price Series Voltage Dielectric Package/Case Mounting Type Tolerance Dimensions Lead Pitch Lead Diameter Depth Height Length Capacitive Range Maximum Capacitance
RS Stock No. 832-318
Mfr. Part No.TZC3R100A110R00
BrandMurata
$1.488
Each (In a Pack of 5)
units
TZC3 100V dc - C3 Surface Mount 0 → +50% 4.5 x 3.2 x 1.6mm - - 3.2mm 1.6mm 4.5mm 3 → 10pF 10pF
RS Stock No. 381-419
Mfr. Part No.BFC280908003
BrandVishay
$21.832
Each (In a Pack of 5)
units
BFC2 250V dc PTFE - Through Hole - 10 x 11 x 11mm - - 11mm 11mm 10mm 5.0 → 60pF 60pF
RS Stock No. 721-5350
Mfr. Part No.TZC3P300A110R00
BrandMurata
$1.034
Each (In a Pack of 5)
units
TZC3 100V dc - C3 Surface Mount 0 → +50% 4.5 x 3.2 x 1.6mm - - 3.2mm 1.6mm 4.5mm 6.5 → 30pF 30pF
RS Stock No. 378-906
Mfr. Part No.BFC280907015
BrandVishay
$84.43
Each (In a Pack of 5)
units
BFC2 200V dc PTFE 015 Through Hole - 14 x 11.5 x 9.2mm - - 11.5mm 9.2mm 14mm 7 → 100pF 100pF
RS Stock No. 173-1606
Mfr. Part No.BFC280907015
BrandVishay
$68.28
Each (In a Box of 350)
units
BFC2 200V dc PTFE 015 Through Hole - 14 x 11.5 x 9.2mm - - 11.5mm 9.2mm 14mm 7 → 100pF 100pF
RS Stock No. 106-2894
Mfr. Part No.TZB4Z250BA10R00
BrandMurata
$2.386
Each (In a Pack of 5)
units
TZB4 50V dc Film - Surface Mount ±0.5% 4.5 x 4 x 3mm - - 4mm 3mm 4.5mm 4 → 25pF 25pF
RS Stock No. 169-2701
Mfr. Part No.TZB4Z250BA10R00
BrandMurata
$1.462
Each (On a Reel of 500)
units
TZB4 50V dc Film - Surface Mount ±0.5% 4.5 x 4 x 3mm - - 4mm 3mm 4.5mm 4 → 25pF 25pF
RS Stock No. 169-3923
Mfr. Part No.TZB4R500AA10R00
BrandMurata
$1.395
Each (On a Reel of 500)
units
TZB4 50V dc - B4 Surface Mount 0 → +100% 4.5 x 4 x 3mm - - 4mm 3mm 4.5mm 7 → 50pF 50pF
RS Stock No. 169-2700
Mfr. Part No.TZB4R500BA10R00
BrandMurata
$1.462
Each (On a Reel of 500)
units
TZB4 50V dc Film - Surface Mount ±0.5% 4.5 x 4 x 3mm - - 4mm 3mm 4.5mm 7 → 50pF 50pF
RS Stock No. 832-396
Mfr. Part No.TZB4Z100AB10R00
BrandMurata
$0.68
Each (In a Pack of 5)
units
TZB4 100V dc - B4 Surface Mount 0 → +50% 4.5 x 4 x 3mm - - 4mm 3mm 4.5mm 3 → 10pF 10pF
RS Stock No. 169-2696
Mfr. Part No.TZB4Z100AB10R00
BrandMurata
$0.936
Each (On a Reel of 500)
units
TZB4 100V dc - B4 Surface Mount 0 → +50% 4.5 x 4 x 3mm - - 4mm 3mm 4.5mm 3 → 10pF 10pF
RS Stock No. 721-5338
Mfr. Part No.TZB4R500BB10R00
BrandMurata
$2.048
Each (In a Pack of 5)
units
TZB4 50V dc - B4 Surface Mount 0 → +100% 4.5 x 4 x 3mm - - 4mm 3mm 4.5mm 7 → 50pF 50pF
RS Stock No. 380-236
Mfr. Part No.BFC280905217
BrandVishay
$9.80
Each (In a Pack of 5)
units
BFC2 300V dc PTFE 0217 Through Hole - 7.4 x 6.7 x 9mm - - 6.7mm 9mm 7.4mm 2 → 18pF 18pF
RS Stock No. 106-2893
Mfr. Part No.TZB4R500BA10R00
BrandMurata
$2.09
Each (In a Pack of 5)
units
TZB4 50V dc Film - Surface Mount ±0.5% 4.5 x 4 x 3mm - - 4mm 3mm 4.5mm 7 → 50pF 50pF
New
RS Stock No. 185-7583
Mfr. Part No.LXRW19V201-058
BrandMurata
$3.00
Each (In a Pack of 5)
units
LXRW 5.3V dc - - Surface Mount - 1.3 x 0.9 x 0.4mm - - 0.9mm 0.4mm 1.3mm 100 → 200pF 200pF
RS Stock No. 175-3527
BrandRS PRO
$0.30
Each (In a Bag of 500)
units
- 100V Ceramic - Through Hole 0 → 50% 5 x 6mm 5.3mm 0.2mm 5mm 6mm - 6 → 30pF 30
RS Stock No. 832-352
Mfr. Part No.TZV2Z100A110R00
BrandMurata
$1.306
Each (In a Pack of 5)
units
TZV2 25V dc - V2 Surface Mount 0 → +100% 3.2 x 2.3 x 1.45mm - - 2.3mm 1.45mm 3.2mm 3.0 → 10pF 10pF
RS Stock No. 832-419
Mfr. Part No.TZB4P300AA10B00
BrandMurata
$1.714
Each (In a Pack of 5)
units
TZB4 100V dc - B4 Surface Mount 0 → +50% 4.5 x 4 x 3mm - - 4mm 3mm 4.5mm 6.5 → 30pF 30pF
RS Stock No. 175-3528
BrandRS PRO
$0.375
Each (In a Bag of 500)
units
- 100V Ceramic - Through Hole 0 → 50% 5 x 6mm 5.3mm 0.2mm 5mm 6mm - 10 → 50pF 50
New
RS Stock No. 185-7337
Mfr. Part No.LXRW19V330-050
BrandMurata
$0.925
Each (On a Reel of 3000)
units
LXRW 50V ac - - Surface Mount - 1.3 x 0.9 x 0.6mm - - 0.9mm 0.6mm 1.3mm 16.5 → 33pF 33pF
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