Suntan Ceramic Trimmer Potentiometer

Suntan Technology Company Limited
----All Kinds of Capacitors

Ceramic Trimmer Potentiometer Features

  1. 6mm Round/ Single-Turn/ Cermet Industrial/ Open Frame
  2. Cross slot adjustment options
  3. Horiontal andvertical mounting styles
  4. Dust resistant/ splash resistant covers
  5. PC board stand-offs and retention feature
  6. Front and top adjust styles

Ceramic Trimmer Potentiometer Electrical Characteristics

  1. Standard Resistance Range 100Ω to 1meg ohm
  2. Resistance Tolerance ±20% (TK±25%)
  3. Adjustment Angle 240°C ± 20°C
  4. Residual Resistance ≤500Ω, 10Ω>500Ω, 2% 

Ceramic Trimmer Potentiometer Pictures

Circularity Trimming Potentiometers

Circularity Trimming Potentiometers Features

  1. (Single Turn/ Cermet/ Industrial/ Sealed)
  2. (5 Terminal S tyles)

Circularity Trimming Potentiometers Electrical Characteristics

  • Standard Resistance Range 50Ω - 2MΩ
  • Resistance Tolerance ±5%, ±10%
  • Absolute Minimum Resistance ≤1% R or 2Ω
  • Contact Resistance Variation CRV≤3%or 3Ω
  • Insulation Resistance R1≥1GΩ(100Vac)
  • Withstand Voltage 500Vac
  • Effective Travel 280°

Circularity Trimming Potentiometers Pictures

Circularity Trimming Potentiometers

Round Trimming Potentiometers

Round Trimming Potentiometers Features

  1. (Single Turn/ Cermet/ Industrial)
  2. (2 Terminal S tyles)

Round Trimming Potentiometers Electrical Characteristics

  • Standard Resistance Range 10Ω - 2MΩ
  • Resistance Tolerance ±30% std
  • Absolute Minimum Resistance 1% max (≤2K=30Ω)
  • Contact Resistance Variation 3% max
  • Resistance Essentially infinite
  • Adjustment Angle 235° nom

Round Trimming Potentiometers Contact

Trimmer (electronics)

A trimmer is a miniature adjustable electrical component. It is meant to be set correctly when installed in some device, and never seen or adjusted by the device's user. Trimmers can be variable resistors (potentiometers) or variable capacitors. They are common in precision circuitry like A/V components, and may need to be adjusted when the equipment is serviced. Unlike other variable controls, trimmers are mounted directly on circuit boards, turned with a small screwdriver and rated for many fewer adjustments over their lifetime. In 1952, Marlan Bourns patented the world's first trimming potentiometer, trademarked "Trimpot".

Rectangular Trimming Potentiometers

Rectangular Trimming Potentiometers Features

  1. (Multiturn/ Cermet/ Industrial/ Sealed)
  2. (3 Terminal Styles)

Rectangular Trimming Potentiometers Parameters download PDF files Download TSR-3006 - Rectangular Trimming Potentiometers PDF

Rectangular Trimming Potentiometers Electrical Characteristics
Standard Resistance Range 10Ω - 5MΩ
Resistance Tolerance ±5%, ±10%
Absolute Minimum Resistance ≤1% R or 2Ω
Contact Resistance Variation CRV≤1%or 1Ω
Insulation Resistance R1≥1GΩ(100Vac)
Withstand Voltage 640Vac
Effective Travel 22 turns nom

Polypropylene Capacitors

This capacitor is used when a higher tolerance is necessary than polyester capacitors offer. Polypropylene film is used for the dielectric. It is said that there is almost no change of capacitance in these devices if they are used with frequencies of 100KHz or less.

The pictured capacitors have a tolerance of ±1%.

From the left in the photograph
Capacitance: 0.01 µF (printed with 103F)
[the width 7mm, the height 7mm, the thickness 3mm]
Capacitance: 0.022 µF (printed with 223F)
[the width 7mm, the height 10mm, the thickness 4mm]
Capacitance: 0.1 µF (printed with 104F)
[the width 9mm, the height 11mm, the thickness 5mm]

Polyester Film Capacitors

This capacitor uses thin polyester film as the dielectric.

They are not high tolerance, but they are cheap and handy. Their tolerance is about ±5% to ±10%.

From the left in the photograph
Capacitance: 0.001 µF (printed with 001K)
[the width 5 mm, the height 10 mm, the thickness 2 mm]
Capacitance: 0.1 µF (printed with 104K)
[the width 10 mm, the height 11 mm, the thickness 5mm]
Capacitance: 0.22 µF (printed with .22K)
[the width 13 mm, the height 18 mm, the thickness 7mm]

Electric Double Layer Capacitors (Super Capacitors)

  • This is a "Super Capacitor," which is quite a wonder.
  • The capacitance is 0.47 F (470,000 µF).
  • I have not used this capacitor in an actual circuit.

Care must be taken when using a capacitor with such a large capacitance in power supply circuits, etc. The rectifier in the circuit can be destroyed by a huge rush of current when the capacitor is empty. For a brief moment, the capacitor is more like a short circuit. A protection circuit needs to be set up.

The size is small in spite of capacitance. Physically, the diameter is 21 mm, the height is 11 mm.

Care is necessary, because these devices do have polarity.

Su Suntan Analyze How Capacitors Work

Suntan Technology Company Limited
---All kinds of Capacitors

In a way, a capacitor is a little like a battery. Although they work in completely different ways, capacitors and batteries both store electrical energy. If you have read How Batteries Work, then you know that a battery has two terminals. Inside the battery, chemical reactions produce electrons on one terminal and absorb electrons on the other terminal. A capacitor is much simpler than a battery, as it can't produce new electrons -- it only stores them.

In this article, we'll learn exactly what a capacitor is, what it does and how it's used in electronics. We'll also look at the history of the capacitor and how several people helped shape its progress.

Inside the capacitor, the terminals connect to two metal plates separated by a non-conducting substance, or dielectric. You can easily make a capacitor from two pieces of aluminum foil and a piece of paper. It won't be a particularly good capacitor in terms of its storage capacity, but it will work.

In theory, the dielectric can be any non-conductive substance. However, for practical applications, specific materials are used that best suit the capacitor's function. Mica, ceramic, cellulose, porcelain, Mylar, Teflon and even air are some of the non-conductive materials used. The dielectric dictates what kind of capacitor it is and for what it is best suited. Depending on the size and type of dielectric, some capacitors are better for high frequency uses, while some are better for high voltage applications. Capacitors can be manufactured to serve any purpose, from the smallest plastic capacitor in your calculator, to an ultra capacitor that can power a commuter bus. NASA uses glass capacitors to help wake up the space shuttle's circuitry and help deploy space probes. Here are some of the various types of capacitors and how they are used.

  • Air - Often used in radio tuning circuits
  • Mylar - Most commonly used for timer circuits like clocks, alarms and counters
  • Glass - Good for high voltage applications
  • Ceramic - Used for high frequency purposes like antennas, X-ray and MRI machines
  • Super capacitor - Powers electric and hybrid cars

In the next section, we'll take a closer look at exactly how capacitors work.

Su Suntan Electrochemical Type Capacitors

Suntan Technology Company Limited
---All kinds of Capacitors

Aluminum is used for the electrodes by using a thin oxidization membrane.

Large values of capacitance can be obtained in comparison with the size of the capacitor, because the dielectric used is very thin.

The most important characteristic of electrolytic capacitors is that they have polarity. They have a positive and a negative electrode.[Polarised] This means that it is very important which way round they are connected. If the capacitor is subjected to voltage exceeding its working voltage, or if it is connected with incorrect polarity, it may burst. It is extremely dangerous, because it can quite literally explode. Make absolutely no mistakes.

Generally, in the circuit diagram, the positive side is indicated by a "+" (plus) symbol.

Electrolytic capacitors range in value from about 1µF to thousands of µF. Mainly this type of capacitor is used as a ripple filter in a power supply circuit, or as a filter to bypass low frequency signals, etc. Because this type of capacitor is comparatively similar to the nature of a coil in construction, it isn't possible to use for high-frequency circuits. (It is said that the frequency characteristic is bad.)

The photograph on the left is an example of the different values of electrolytic capacitors in which the capacitance and voltage differ.

From the left to right:

  • 1µF (50V) [diameter 5 mm, high 12 mm]
  • 47µF (16V) [diameter 6 mm, high 5 mm]
  • 100µF (25V) [diameter 5 mm, high 11 mm]
  • 220µF (25V) [diameter 8 mm, high 12 mm]
  • 1000µF (50V) [diameter 18 mm, high 40 mm]

The size of the capacitor sometimes depends on the manufacturer. So the sizes shown here on this page are just examples.

In the photograph to the right, the mark indicating the negative lead of the component can be seen. You need to pay attention to the polarity indication so as not to make a mistake when you assemble the circuit.