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10000 Cycles Carbon Composition Potentiometer Adjustable Resistance Dimmer

Categories Carbon Composition Potentiometer
Brand Name: ANYO
Model Number: WH138-1
Place of Origin: CHINA
MOQ: 1000pcs
Price: Negotiation
Payment Terms: L/C, T/T
Supply Ability: 30000 per day
Delivery Time: 8-10 work days
Packaging Details: 2000pcs/carton, 16kg, 39*31*25cm
Other name: Dimmer potentiometer
Rotational noise: ≤47mV
Total resistance: 1KΩ ~ 2MΩ
Resistance tolerance: ± 20%
Resistance taper: A,B,C
Rotary life: 10000 cycles
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    10000 Cycles Carbon Composition Potentiometer Adjustable Resistance Dimmer

    Φ24mm adjustable resistance dimmer with switch potentiometer WH138-1


    Application:


    Ideal for multimedia, computer speaker, stereos amplifier, lighting regulation etc.


    Description:


    The carbon film potentiometers are formed by depositing carbon composition ink on an insulating body, which in most of the cases is phenolic resin. This is one of the most commonly used materials for the potentiometer that is quite cheap and has resolution better than the wire wound potentiometers. They have reasonable life and tolerable noise levels.


    Features:


    • Rotary type with switch

    • Carbon composition

    • Top adjustment

    • 6mm knurled shaft

    • Special tapers


    Mechanical specifications:


    Rotational torque2~20mN.m (20~200gf.cm)
    Total rotation angle300°±5°
    Switch working force/torque150~450mN.m
    Shaft stop strength6Kgf.cm/min
    Rotary life10000 cycles
    Switch life10000 times
    Switch working angle50°±10°
    Soldering235℃±5℃: ≤3s

    Electrical specifications:


    Temperature range-10℃~100℃
    Rated power

    Curve B: 0.5W

    Other curve B: 0.25W

    Max. operation voltage

    Curve B: AC 500V

    Other curve B: AC250V

    Resistance tolerance± 20%
    Resistance range1KΩ~2MΩ
    Rotational noise≤ 47 mV
    Residual resistanceR ≥ 250KΩ 0.1% max.
    250KΩ> R> 10KΩ 20 Ω max
    10KΩ ≥ R 10 Ω max
    Resistance taperA,B,C
    Switch contact resistanceLess than 30mΩ
    DielectricAC500V for 1 minute
    Rated switching powerAC125V 1A,4A,6A
    Insulation resistanceMore than 100MΩ at DC250V

    Materials used for potentiometer:


    MaterialProperties
    Carbon compositionCarbon composition ink molded on a substrate(phenolic resin). Most common material, low cost and reasonable noise and wear characteristics.
    WirewoundWirewound pots can handle high power,are long lasting and can be very precise. They have however a limited resolution and rough feel. Most used in high power applications (rheostats are often wirewound) or as precision pots.
    Conductive plasticVery smooth feel and high resolution, can be constructed to perform millions of cycles. Can only handle a limited power and are expensive. Often used in high-end (audio) equipment where a high resolution and low noise are important.
    CermetVery stable, low temperature coefficient and handles high temperatures well. On the other hand quite expensive and often limited amount of cylces allowed(special long-life cermet pots also exist). Often used for trimpots which do not have to be adjusted often.

    The taper of a potentiometer is normally indicated with a letter. The following table lists the used coding for potentiometer taper, different standards uses the same letters which can be confusing. It is always a good idea to double check the taper by measurement.


    TaperStringAsia (common)EuropeAmericaVishay
    LinearLINBABA
    Log / AudioLOGACAL
    Anti-logFCF

    Dimension:


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