Spindle Operated Potentiometers
Type 12P, 12C Series
Literature No. 1773174
Issued: 07-05
Dimensions are shown for
reference purposes only.
Dimensions are in millimetres
unless otherwise specified.
Specifications subject to
change.
www.tycoelectronics.com
passives.tycoelectronics.com
These small versatile potentiometers
meet a wide range of instrument
applications. They are ideally suited to
the need of professional broadcast and
industrial control systems where a
high performance specification, long
operational life and low noise are of
prime importance. They are offered
with printed circuit and eyelet terminals
as alternatives.
Key Features
■Polymer Film or Cermet
Element
■Low Noise
■Long Life
■High Performance
■12.5mm Square
■Robust Construction
■Linear and Non Linear Laws
■Board Washable
■Eyelet PC Terminations
Type 12P, 12C Series Characteristics -
Electrical
Conductive Cermet
Plastic 12P, 12C
Resistance Laws & Range: 1K Ohm to 1M Ohm Linear 150 Ohm to 100K Ohm (Linear)
(Non Linear Laws available to order)
Standard Values: 1K, 5K, 10K, 50K, 100K, 500K, 1M 150R, 200R, 250R, 500R,
750R, 1K, 5K, 10K, 50K, 100K
Selection Tolerance: ± 20% ( ± 10% by selection ) ± 10% ( ± 5% by selection )
Rated Dissipation: 0.25W Lin, 0.125W Non Lin 1.0W
Limiting Element Voltage: 200V dc or ac RMS 350V dc or ac peak
Isolation Voltage: 500V dc or ac peak 500V dc or ac peak
Electrical Rotation: 270° ± 5° 270° ± 5°
Terminal Resistance: 2 Ohm max. 2 Ohm max.
Noise: 2 % max. 2 % max.
Insulation Resistance: 1000M Ohm min. 1000 M Ohm min.
Characteristics -
Mechanical
Conductive Cermet
Plastic 12P, 12C
Starting Torque: 2 to 15 mNm 2 to 15 mNm
Mechanical Torque: 295° ± 5° 295° ± 5°
End Stop Torque: 560 mNm 560 mNm
Spindles (standard) 7/8" Long with slot x 1/8" diameter 7/8" Long with slot x 1/8" diameter
1" Long with slot x 1/4" diameter 1" Long with slot x 1/4" diameter
Other spindle, bushing and Terminal Other spindle, bushing and Terminal
styles are available on request styles are available on request
Characteristics -
Environmental
Resistance
Laws
Conductive Cermet
Plastic 12P, 12C
Limits of Resistance Change: ± 5% (after 1000 hrs endurance) ± 10% (after 1000 hrs endurance)
Temperature characteristics of ± 1000 ppm/°C ± 150 ppm/°C
resistance (-55°C to 125°C):
Bump Severity: 15G ∆R<± 2% 15G ∆R<± 2%
Mechanical Endurance: 50,000 operations min. 25,000 operations min.
A - Linear
B - Log
C - Inverse Log
0 102030405060708090100
% Effective Electrical Clockwise Rotation
100
90
80
70
60
50
40
30
20
10
0
A
B
C
Percent Voltage Rated Output
Cermet Elements
This series has been enhanced by the
development of a Cermet version.
Cermet elements are available in a
wide range of resistive values. They
offer essentially infinite resolution and
excellent stability in most severe
environmental conditions. Static and
Dynamic noise (CRV) performance is
good but does not match that of
conductive plastic.
The temperature coefficient of cermet
elements, though not as low as for
wirewound elements, is better than
conductive plastic type elements.
Frequency response of cermet
materials is very good and the
practical application range extends
well beyond 100MHZ.
Spindle Operated Potentiometers
Type 12P, 12C Series
Literature No. 1773174
Issued: 07-05
Dimensions are shown for
reference purposes only.
Dimensions are in millimetres
unless otherwise specified.
Specifications subject to
change.
www.tycoelectronics.com
passives.tycoelectronics.com
Dimensions
PCB Mounting Bracket Solder Lug Terminals
Electrical Schematic
Anti-Rotation Lug
Suggested Panel Layouts
The 12P can be used with either of the two Panel Layouts shown below
Spindle Operated Potentiometers
Type 12P, 12C Series
Literature No. 1773174
Issued: 07-05
Dimensions are shown for
reference purposes only.
Dimensions are in millimetres
unless otherwise specified.
Specifications subject to
change.
www.tycoelectronics.com
passives.tycoelectronics.com
How to Order
* Special Types
A drawing is required for:
Multi gang / switches
Mounting Bracket
12P C S A 104 M A 68 B
12P - Conductive Plastic
12C - Cermet
Common Part
S - Standard
X - Customer Special
(see drawing)
Customer Identity
A - Linear
B - Log (12P only)
C - Inv-Log
Resistor Law
M - 20%
K - 10% (12C only)
Resistor Tolerance
IMPERIAL STYLE
68 - 3/4”
78 - 7/8”
88 - 1”
METRIC STYLE
16 - 16mm
22 - 22mm
25 - 25mm
Shaft Length
The first two digits are
significant figures of
resistance value and the
third denotes the number
of zeros following
e.g. 200 Ohms: 201
50K Ohms: 503
100K Ohms: 104
Resistance Value
All Bushes have
Anti-Rotation Lug
A - 3/8” Dia x 3/8”
1/4” Hole
B - 1/4” Dia x 1/4”
1/8” Hole
D - 10mm Dia x 9.5mm
x 6mm Hole
E - 7mm Dia x 8mm
x 4mm Hole
F - 6mm Dia x 8mm
3mm Hole
(see datasheet for
position of lug)
Bush Details
B - Slotted 1/4” Dia.
E - Slotted 1/8” Dia.
H - Slotted 6mm Dia.
J - Slotted 4mm Dia.
K - Slotted 3mm Dia.
Shaft Style
C - Printed Circuit
E - Eyelet
Termination Style
