H-38-11 Bourns Inc., H-38-11 Datasheet - Page 28

• 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

39
50 Series
80 Series (81, 82, 85, 86) A, H, B, E
80 Series (83, 84)
90 Series
3310
3851, 3852, 3856
3862
PCW
PDA17
PDB12
PDB18
PTV09
PTV111/PTT111
PTV142
PTD90/PTR90
PDV
PTA
PTB
Application Notes
Potentiometers
Performance Characteristics
The following section discusses various performance
characteristics to be considered when selecting a
potentiometer along with typical applications and
basic circuit configurations.
Power Rating
Power rating is the maximum heat that can be
dissipated by a potentiometer under specified
conditions with certain performance requirements.
Heat (or power) dissipation is the result of current
passing through a resistance. The useful life of a
given potentiometer is directly related to the
maximum temperature allowed in the interior of the
unit. Above a certain internal temperature, insulating
materials begin to degrade. A maximum power
Notes:
Table 1: Taper Codes by Model
• Please refer to the datasheets for more information on taper codes
• *Custom parts only
• All precision potentiometer models are available in linear only.
• “S” taper and other tapers are available by special order.
Models
Linear only
A, H, B, E
A, H, B, E
A, H, B, E
A, H, B, E
J, K
1
B
B
B
B
B
B
B
B
B
B
B
B
Taper Codes
C, D, S
C, D, S
C, D, S
C, D
C, D
2
D
D
A
A
A
A
A
A
A
A
A
A
F, G, T
F, G, T
F, G, T
F, G
F, G
3
G
G
4*
rating indicates to the circuit designer how much
power may be safely dissipated without harm to the
device.
Taper
A taper is defined as the output curve of resistance,
measured between one end of the element and the
wiper. It is expressed in percent of total resistance
versus percent of effective rotation. Sensors and
Controls precision wirewound products and
precision single-turn potentiometers are available in
linear taper only. Linear taper is the percent of
effective electrical clockwise rotation equal to the
percent of voltage ratio output, creating a linear
output. Audio taper produces a change in output on
a logarithmic scale giving the human ear the
perception of sound intensity increasing in a linear
mode. All other Bourns® potentiometers are
available in a variety of standard tapers, including
audio and reverse audio. Custom tapers are available;
consult the factory for complete details and
minimum order quantities. Table 1 provides an easy
reference for taper codes on all Bourns® panel
control models. Figure 1 shows the most frequently
requested tapers ranked by most popular:
1 = linear taper
2 = audio or log taper
3 = reverse audio or reverse log taper
4 = modified linear or “S” taper
Figure 1: Popular Tapers
1
3
4
2
27