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. 106-2893
Mfr. Part No.TZB4R500BA10R00
BrandMurata
TWD29
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. 380-236
Mfr. Part No.BFC280905217
BrandVishay
TWD192
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. 247-0394
BrandRS Pro
TWD17
Each (In a Pack of 5)
units
CV 200V dc - - Surface Mount - 5.8 x 5 x 9mm 5mm 1mm 5mm 9mm 5.8mm 3.5 → 20pF 20pF
RS Stock No. 169-2700
Mfr. Part No.TZB4R500BA10R00
BrandMurata
TWD34
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. 832-447
Mfr. Part No.TZB4R500AB10R00
BrandMurata
TWD51
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. 169-3925
Mfr. Part No.TZB4R500BB10R00
BrandMurata
TWD32
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
TWD62
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. 832-403
Mfr. Part No.TZB4R200AB10R00
BrandMurata
TWD21
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 4.5 → 20pF 20pF
RS Stock No. 619-8383
Mfr. Part No.TZY2R200A001R00
BrandMurata
TWD23
Each (In a Pack of 5)
units
TZY2 25V dc - Y2 Surface Mount 0 → +100% 3.2 x 2.5 x 1.25mm - - 2.5mm 1.25mm 3.2mm 4.5 → 20pF 20pF
RS Stock No. 169-2697
Mfr. Part No.TZB4R200AB10R00
BrandMurata
TWD22
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 4.5 → 20pF 20pF
RS Stock No. 378-906
Mfr. Part No.BFC280907015
BrandVishay
TWD2,711
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. 721-5329
Mfr. Part No.TZB4R500AA10R00
BrandMurata
TWD41
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. 169-3924
Mfr. Part No.TZB4Z060BB10R00
BrandMurata
TWD22
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 2 → 6pF 6pF
RS Stock No. 169-3923
Mfr. Part No.TZB4R500AA10R00
BrandMurata
TWD32
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. 381-419
Mfr. Part No.BFC280908003
BrandVishay
TWD374
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
TWD2,176
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. 721-5335
Mfr. Part No.TZB4Z060BB10R00
BrandMurata
TWD43
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 2 → 6pF 6pF
RS Stock No. 169-2692
Mfr. Part No.TZV2Z100A110R00
BrandMurata
TWD44,214
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 3.0 → 10pF 10pF
RS Stock No. 169-6380
Mfr. Part No.TZC3P300A110B00
BrandMurata
TWD16
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
RS Stock No. 721-5322
Mfr. Part No.TZB4R200BA10R00
BrandMurata
TWD25
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 4.5 → 20pF 20pF