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. 381-419
Mfr. Part No.BFC280908003
BrandVishay
£11.182
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. 173-1606
Mfr. Part No.BFC280907015
BrandVishay
£41.052
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. 378-906
Mfr. Part No.BFC280907015
BrandVishay
£74.062
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. 380-236
Mfr. Part No.BFC280905217
BrandVishay
£6.08
Each (In a Pack of 5)
Units
BFC2 300V dc PTFE 217 Through Hole - 7.4 x 6.7 x 9mm - - 6.7mm 9mm 7.4mm 2 → 18pF 18pF
RS Stock No. 832-425
Mfr. Part No.TZB4P400AB10R00
BrandMurata
£0.926
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 8.5 → 40pF 40pF
RS Stock No. 169-2699
Mfr. Part No.TZB4P400AB10R00
BrandMurata
£0.344
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 8.5 → 40pF 40pF
RS Stock No. 169-3925
Mfr. Part No.TZB4R500BB10R00
BrandMurata
£0.633
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. 721-5338
Mfr. Part No.TZB4R500BB10R00
BrandMurata
£1.74
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. 169-2691
Mfr. Part No.TZC3P200A110R00
BrandMurata
£316.03
1 Reel of 1000
Reel(s)
TZC3 100V dc - C3 Surface Mount 0 → +50% 4.5 x 3.2 x 1.6mm - - 3.2mm 1.6mm 4.5mm 5 → 20pF 20pF
RS Stock No. 832-324
Mfr. Part No.TZC3P200A110R00
BrandMurata
£0.806
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 5 → 20pF 20pF
RS Stock No. 790-2786
Mfr. Part No.TZC3P200A110B00
BrandMurata
£0.806
Each (In a Pack of 5)
Units
TZC3 100V dc N1200 - Surface Mount 0 → +50% 4.5 x 3.2 x 1.6mm - - 3.2mm 1.6mm 4.5mm 5 → 20pF 20pF
RS Stock No. 169-2690
Mfr. Part No.TZC3Z060A110R00
BrandMurata
£316.03
1 Reel of 1000
Reel(s)
TZC3 100V dc - C3 Surface Mount 0 → +50% 4.5 x 3.2 x 1.6mm - - 3.2mm 1.6mm 4.5mm 2 → 6pF 6pF
RS Stock No. 832-302
Mfr. Part No.TZC3Z060A110R00
BrandMurata
£0.478
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 2 → 6pF 6pF
RS Stock No. 106-2893
Mfr. Part No.TZB4R500BA10R00
BrandMurata
£1.716
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
RS Stock No. 832-368
Mfr. Part No.TZV2R200A110R00
BrandMurata
£0.92
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 4.5 → 20pF 20pF
RS Stock No. 169-3923
Mfr. Part No.TZB4R500AA10R00
BrandMurata
£0.634
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
£0.535
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. 169-2693
Mfr. Part No.TZV2R200A110R00
BrandMurata
£875.93
1 Reel of 2000
Reel(s)
TZV2 25V dc - V2 Surface Mount 0 → +100% 3.2 x 2.3 x 1.45mm - - 2.3mm 1.45mm 3.2mm 4.5 → 20pF 20pF
RS Stock No. 721-5329
Mfr. Part No.TZB4R500AA10R00
BrandMurata
£1.716
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. 169-6380
Mfr. Part No.TZC3P300A110B00
BrandMurata
£0.312
Each (On a Reel of 500)
Units
TZC3 100V dc N1200 - Surface Mount 0 → +50% 4.5 x 3.2 x 1.6mm - - 3.2mm 1.6mm 4.5mm 6.5 → 30pF 30pF