Kingtronics Blog

WELDABILITY:
The ability of materials to be welded together under specified conditions.

TERMINAL STRENGTH:
The ability of the terminals to withstand specified mechanical stresses without sustaining damage that would affect utility of the terminals or operation of the trimming potentiometer.

IMMERSION SEALED:
The ability of the unit to withstand submersion in acceptable cleaning solutions used in normal soldering processes without performance degradation under specific environmental conditions.

TORQUE

STARTING (OPERATING) TORQUE:
The maximum moment in the clockwise and counterclockwise directions required to initiate shaft adjustment anywhere in the mechanical travel.

STOP TORQUE:
The maximum static moment that can be applied to adjustment shaft at each mechanical stop for a specified period of time without loss of continuity or mechanical damage affecting operational characteristics.

SOLDERABILITY:
The ability of the terminals to accept a uniform coating of solder under specified conditions.

Kingtronics offers full range of Trimming Potentiometers with our own trademark "Kt" since 1990.
We gain high reputation by our trimpots superior quality and competitive price. We are proud that Kingtronics Trimpot are well-known in the overseas market.

In Jan 2016, we prepared all the key raw materials of Trimming Potentiometers and then handed over to SGS laboratory.
After 1 week testing , we got the positive reply of our potentiometers from SGS company.  Now we would like to share this good news with our Kingtronics faithful customer.
Kingtronics Trimming Potentiometer is your first chosie, and Kingtronics is your best partner.

More details about our RoHS 2.0 Report, please visit below link:
http://www.kingtronics.com/pdf/Trimming-potentiometer-RoHS.pdf

ROTATIONAL LIFE:
The number of cycles obtainable under specific operating conditions while remaining within specified allowable degradation. A cycle is defined as one complete traversal of the wiper over the resistive element in both directions.

LOAD LIFE:
The number of hours at which a device may dissipate rated power under specified operating conditions while remaining within specified allowable degradations.

ADJUSTABILITY:
Defines the precision with which the output of a device can be set to the desired value.

ADJUSTABILITY (OUTPUT RESISTANCE):
The precision with which the output resistance of a device can be set to the desired value.

ADJUSTABILITY (OUTPUT VOLTAGE RATIO):
The precision with which the output voltage ratio of a device can be set to the desired value.

CONTINUITY:
Continuity is the maintenance of continuous electrical contact between the wiper and both end terminals of the resistive element.

SETTING STABILITY:
The amount of change in the output voltage, without readjustment, expressed as a percentage of the total applied voltage.

DIELECTRIC STRENGTH:
The ability to withstand the application of a specified potential of a given characteristic, between the terminals and all other external conducting member such as shaft, housing and mounting hardware without exceeding a specified leakage current value.

INSULATION RESISTANCE:
The resistance to a specified dc voltage impressed between the terminals and all other external conducting members such as shaft, housing and mounting hardware.

POWER RATING:
The maximum power that a trimming potentiometer can dissipate across the total resistive element under specified conditions while meeting specified performance requirements.

CONTACT RESISTANCE VARIATION: (CRV)
The apparent resistance seen between the wiper and the resistance element when the wiper is energized with a specified current and moved over the adjustment travel in either direction at a constant speed. The output variations are measured over a specified frequency bandwidth, exclusive of the effects due to roll-on or roll-off of the terminations and is expressed in ohms or % of Rt.

EQUIVALENT NOISE RESISTANCE: (ENR)
(Wirewound only) Any spurious variation in the electrical output not present in the input, defined quantitatively in terms of an equivalent parasitic, transient resistance in ohms, appearing between the contact and the resistive element when the shaft is rotated or translated. The Equivalent Noise Resistance is defined independently of the resolution, functional characteristics and the total travel. The magnitude of the Equivalent Noise Resistance is the maximum departure from a specific reference line. The wiper of the potentiometer is required to be excited by a specific current and moved at a specific speed.

RESISTANCE-TEMPERATURE CHARACTERISTIC: (RTC)
The difference between the total resistance values measured at a reference temperature of 25°C and the specified test temperature expressed as a percent of the Total Resistance.
Where:
R1 = Resistance at reference temperature (25°C) in ohms
R2 = Resistance at the test temperature in ohms

TOTAL RESISTANCE: (Rt)
The dc resistance between the input terminals with the wiper positioned to either end stop, or in dead band for continuous rotation potentiometers.

ABSOLUTE MINIMUM RESISTANCE: (Rm)
The resistance measured between the wiper terminal and each end terminal with the wiper positioned to give a minimum value.

END RESISTANCE: (Re)
The resistance measured between the wiper terminal and an end terminal when the wiper is positioned at the corresponding end of mechanical travel.
Absolute minimum resistance and end resistance are synonymous for continuous rotation trimmers.

TEMPERATURE COEFFICIENT OF RESISTANCE: (TC)
The unit change in resistance per degree celsius change from a reference temperature, expressed in parts per million per degree celsius as follows:



Where:
R1 = Resistance at reference temperature in ohms
R2 = Resistance at test temperature in ohms
T1 = Reference temperature in degrees celsius
T2 = Test temperature in degrees Celsius

1. Do you buy Passive Components? If yes, are there any problems you're facing? Like quality, price, package and L/T...
    Passive Components including trimmer, Quartz Crystal, radial / dipped type for MLCC and tantalum capacitors. We produce these parts.

2. We're ISO 9001:2008 manufacturer since 1990. Maybe we can help you solve above problems. 
    a. Quality is very good. With ISO, UL & SGS approval.
    b. Prices are competitive on the market, maybe not the lowest, but it costs our valued products.
    c. Good package & Fast delivery time.

3. We also sell our parts to Newark Farnell (Element 14), Avnet Abacus, Compel, YE International...

4. Different from other suppliers, our service is very good, enjoy good reputation on the market. 
    We show our products in Munich Electronica, Moscow Expo Electronica, Brazil FIEE, HK Asia Electronica.

5. Below is our Passive components we produce, kindly please check if you have inquiry for us.
MKT: Radial multilayer ceramic capacitor.
http://www.kingtronics.com/mlcc-capacitors/radial-mlcc-capacitors.html

LKT:  Chip multilayer ceramic capacitor
http://www.kingtronics.com/mlcc-capacitors/smd-mlcc-capacitors.html

HKT:  High voltage multilayer ceramic capacitor
http://www.kingtronics.com/mlcc-capacitors/high-voltage-mlcc-capacitors.html

TKT:   Dipped tantalum capacitor.
http://www.kingtronics.com/tantalum-capacitors/dipped-tantalum.html

CKT:  Chip tantalum capacitor
http://www.kingtronics.com/tantalum-capacitors/chip-tantalum-capacitors.html

RKT:  Trimmer potentiometer 3296 3006 3386 3266 3362 3329 3590S SMD C3305...
http://www.kingtronics.com/trimming-potentiometers/

QKT:  Quartz Crystal HC49S, HC49U, HC49SMD.
http://www.kingtronics.com/quartz-crystals/

Trimming-potentiometers, cermet trimmer  (Cross to Bourns, Murata, Tocos, Vishay, BI technology)
RKT-3269, RKT-3296, RKT-3323, RKT-3329, RKT-3362, RKT-3386, RKT-3309, RKT-3540S, RKT-3590, RKT-C3305, RKT-065.

Output 5KKpcs/month, more than 20 years' production experience 

Good quality and free samples are available for quality test

L/T: 3-5 weeks for common items

ISO & SGS certified &  RoHS compliant