H-38-11 Bourns Inc., H-38-11 Datasheet - Page 8

• Manufacturer Part Number: H-38-11
• Description: HDWR NUT MOUNTING FOR ECW ENCODR
• Manufacturer: Bourns Inc.
• Type: Mounting Nutr
• Series: Hr

Specifications of H-38-11

• Mounting Hole Size: 9 mm
• Features: Hardware indicated by shaded area is normally supplied with unit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: ECW1DB24BC0024 - ENCODER DIGITAL CONT 24 CPRECW1JB24BC0024 - ENCODER DIGITAL CONT 24 CPR
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Potentiometers
Selecting a Potentiometer
The Sensors and Controls Division has a
potentiometer to fit many of your applications.
Whether you need a precision control with millions
of rotational life cycles or a commercial
potentiometer that fits in a hand-held radio, we have
a product selection that is second to none. No other
manufacturer offers a broader selection of
potentiometers than Bourns Sensors and Controls.
Types of potentiometers in the Sensors and Controls
product line include:
Precision Potentiometers are used to provide an
accurate electrical output signal corresponding to a
mechanical position input, where accuracy, reliability
and long life are important. These devices are
generally designed for high reliability, long life in
continuous service, high accuracy and operation in
demanding environments.
Panel Control Potentiometers are used where the
frequency of adjustment is high and front panel
accessibility is required. These industrial grade
devices are designed for long rotational life with
emphasis on good adjustability.
Commercial Potentiometers are used in consumer
applications as lower cost alternatives to industrial
grade panel controls. These devices are designed for
moderate rotational life with emphasis on low cost.
In selecting a potentiometer for your application, the
most important characteristics to consider are the
type of element (cermet, conductive plastic, carbon,
wirewound and Hybritron®) and expected cycle life
of the product.
• Multiturn Precision
• Single-Turn Precision
• Panel Control
• Commercial Grade
Cermet Element Technology
Cermet elements are available in
a wide range of resistance values
and tapers. They offer essentially
infinite resolution and excellent
stability in the most severe
environmental conditions. Static
and dynamic noise (CRV)
performance is good, although conductive plastic is
better. The temperature coefficient of cermet
elements is better than conductive plastic or carbon
type elements, though not as good as wirewound
elements. Linearity is good but can be improved in
accuracy by utilizing laser-trimming technology.
Frequency response of cermet materials is very good.
The practical application range extends well beyond
100 MHz.
Conductive Plastic Element Technology
essentially infinite. Conductive plastic elements are
generally available in a wide range of resistance
values and tapers. Moisture resistance, temperature
coefficient, power dissipation and wiper current
capacity for conductive plastic elements are not as
good as cermet elements.
Carbon Element Technology
Carbon elements offer the most cost-
effective technology. A carbon-based
resistive ink is screened or sprayed
onto a phenolic or FR4 substrate.
Resistance ranges are limited,
beginning with 1 kΩ and going as high as 1
MΩ. Potentiometers using this element
technology are typically for commercial type
applications, with rotational life in the 10,000 to
15,000 cycles range.
Conductive plastic thick film ink is similar
to cermet, but has a smoother surface. This
measurably improved and resolution is
characteristic offers several operational
advantages over cermet. Dynamic
smoothness) and rotational life are
noise characteristics (CRV or output
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