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. 378-906
Mfr. Part No.BFC280907015
BrandVishay
HK$429.73
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
HK$61.022
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. 381-419
Mfr. Part No.BFC280908003
BrandVishay
HK$119.984
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. 169-2689
Mfr. Part No.TZC3Z030A110R00
BrandMurata
HK$3,656.47
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 1.4 → 3pF 3pF
RS Stock No. 832-295
Mfr. Part No.TZC3Z030A110R00
BrandMurata
HK$2.36
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 1.4 → 3pF 3pF
RS Stock No. 173-1606
Mfr. Part No.BFC280907015
BrandVishay
HK$341.143
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. 175-3545
BrandRS PRO
HK$2.318
Each (In a Pack of 25)
units
- 100V Ceramic - Through Hole 0 → 50% 5 x 6mm 5.3mm 0.2mm 5mm 6mm - 4.5 → 20pF 20pF
RS Stock No. 185-7578
Mfr. Part No.LXRW0YV330-056
BrandMurata
HK$8.449
Each (In a Pack of 10)
units
LXRW 50V ac - - Surface Mount - 0.6 x 0.6 x 0.3mm - - 0.6mm 0.3mm 0.6mm 16.5 → 33pF 33pF
RS Stock No. 106-2894
Mfr. Part No.TZB4Z250BA10R00
BrandMurata
HK$8.112
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. 169-3923
Mfr. Part No.TZB4R500AA10R00
BrandMurata
HK$6.593
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. 185-7337
Mfr. Part No.LXRW19V330-050
BrandMurata
HK$4.466
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
RS Stock No. 901-5323
Mfr. Part No.TZR1R080A001B00
BrandMurata
HK$36.10
Each
units
TZR1 25V dc - - Surface Mount 0 → +100% 1.7 x 1.5 x 0.9mm - - 1.5mm 0.9mm 1.7mm 3 → 8pF 8pF
RS Stock No. 175-3546
BrandRS PRO
HK$2.897
Each (In a Pack of 25)
units
- 100V Ceramic - Through Hole 0 → 50% 5 x 6mm 5.3mm 0.2mm 5mm 6mm - 6 → 30pF 30pF
RS Stock No. 106-2893
Mfr. Part No.TZB4R500BA10R00
BrandMurata
HK$8.498
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. 185-7583
Mfr. Part No.LXRW19V201-058
BrandMurata
HK$14.484
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. 169-2701
Mfr. Part No.TZB4Z250BA10R00
BrandMurata
HK$6.593
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. 175-3544
BrandRS PRO
HK$2.318
Each (In a Pack of 25)
units
- 100V Ceramic - Through Hole 0 → 50% 5 x 6mm 5.3mm 0.2mm 5mm 6mm - 3 → 10pF 10pF
RS Stock No. 832-396
Mfr. Part No.TZB4Z100AB10R00
BrandMurata
HK$2.854
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. 175-3548
BrandRS PRO
HK$3.138
Each (In a Pack of 25)
units
- 100V Ceramic - Through Hole 0 → 50% 5 x 6mm 5.3mm 0.2mm 5mm 6mm - 10 → 50pF 50pF
RS Stock No. 185-7572
Mfr. Part No.LXRW0YV600-054
BrandMurata
HK$7.242
Each (In a Pack of 10)
units
LXRW 50V ac - - Surface Mount - 0.6 x 0.6 x 0.3mm - - 0.6mm 0.3mm 0.6mm 30 → 60pF 60pF