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Panel pots extend to two million cycles

Posted: 22 Oct 2009 ?? ?Print Version ?Bookmark and Share

Keywords:potentiometer? panel? automotive?

P30L panel potentiometer

Vishay Intertechnology has doubled the rotational life of its P30L compact panel potentiometers to deliver two million cycles at rated power. The potentiometers' power rating has also been increased, from 2W to 3W.

The long-life performance of the P30L reduces the need for replacement parts, increasing reliability and lowering maintenance costs. Its rotational life of two million cycles represents at least a 20-fold improvement over standard potentiometers, which typically reach 50,000 to 100,000 cycles.

The P30L features a high 3W power rating at 70 C, high operating torque of 4.25oz.-inch, an end stop torque of 99oz per inch, and a cermet resistive element for greater reliability and robustness in industrial control applications.

Offered in a fully sealed IP67 package with pure Sn terminals, the potentiometer is intended for industrial control panel, heavy-duty control, automotive and off-road control, and harsh environment applications in end products including trucks and tractors, machine tools, HVAC systems, welding machines, and military, agricultural, and water-resistant equipment.

With only a 19.7mm diameter, the P30L offers designers a compact alternative to other 2W/3W panel potentiometers. Its cermet element provides better stability than carbon elements while its 2500VRMS dielectric strength offers greater reliability and robustness. Custom shafts are available in accordance to drawings supplied by customers.

The potentiometer features four resistances values from 1k? to 50k? over a 44.7V to 300V working range, with a 5 percent independent linearity. An operating temperature range of - 40C to +125C ensures reliable operation even in extreme environments.

Samples and production quantities of the improved P30L are available now with lead times of eight to ten weeks for larger orders.

- Henri Arnold
EE Times Europe

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