VISHAY MODEL708

Model 708
Vishay Spectrol
7/
8"
(22.2 mm) Single Turn Conductive Plastic
Precision Potentiometer
FEATURES
• Virtually infinite resolution
• Bushing mount and servo mount types available
• Rotational life
revolutions
exceeds
20
million
RoHS
COMPLIANT
shaft
• Co-molded track and multi-finger wiper provide low noise
signal
• Ohmic value range: 500 Ω to 50 kΩ
ELECTRICAL SPECIFICATIONS
PARAMETER
Total Resistance
Standard Range:
500 Ω to 50 kΩ
Tolerance:
STANDARD
± 10 %
SPECIAL
±5%
Linearity (Independent)
STANDARD
± 0.5 %
SPECIAL
± 0.2 %
Electrical Angle
340° ± 5°
Power Rating
Section 1:
Additional Sections:
1.0 W at 70° ambient derated to zero at 125 °C
75 % of the rating of section 1
Output Smoothness
0.1 % maximum
Insulation Resistance
1000 MΩ minimum, 500 VDC
Dielectric Strength
1000 VRMS, 60 Hz from Terminals to shaft
Taps (Extra)
Extra taps available as special
Points at which output is 0.5 aligned
± 1° (ref. to section 1)
Phasing
Temperature Coefficient of Resistance
± 400 ppm/°C maximum
ORDERING INFORMATION/DESCRIPTION
The Model 708 can be ordered from this data sheet with a variety of alternate characteristics, as shown. For most rapid service on your
order, please state:
708
B
1
10K
BO1
MODEL
MOUNTING
NUMBER OF SECTIONS
TOTAL RESISTANCE OF EACH SECTION
PACKAGING
B: Bushing
S: Servo
Up to 6
Beginning with the section nearest the
mounting end
Box of 1 piece
Other characteristics will be standard as described on this data sheet. If special characteristics are required, such as: special linearity
tolerance, special resistance tolerance, extra taps, non-linear functions, etc., please state these on your order and allow additional lead time
for delivery.
SAP PART NUMBERING GUIDELINES
708
S
2
102
103
B01
MODEL
STYLE
GANGS
OHMIC VALUE GANG NO 1
OHMIC VALUE GANG NO 2
PACKAGING
B: Bushing
S: Servo
From 1 up to 6
1K
10K
Document Number: 57070
Revision: 02-Jul-07
For technical questions, contact: [email protected]
www.vishay.com
41
Model 708
7/
Vishay Spectrol
8"
(22.2 mm) Single Turn Conductive Plastic
Precision Potentiometer
DIMENSIONS in inches (millimeters)
BUSHING MOUNT: 708 B
± 0.010
± 0.031
0.687
(17.45)
1
0.500
(12.70)
0.250
(6.35)
0.308 MIN.
(7.82) TYP.
3
± 0.015
1
30°
TYP.
2
0.062
(1.57)
3/
8
- 32 UNEF -2A
+ 0.0000
- 0.0010
± 0.015
Ø 0.875
(22.22)
Ø 0.4062
(10.32)
0.640 R MAX.
(16.26)
+ 0.0000
Ø 0.1248 - 0.0003
(3.17)
MTG. FACE
SERVO MOUNT: 708 S
± 0.010
± 0.031
0.687
(17.45)
1
0.500
(12.70)
0.062
(1.57)
0.062
(1.57)
0.062
(1.57)
± 0.015
Ø 0.875
(22.22)
2
+ 0.0000
Ø 0.750
MAX.
(19.05)
Ø 0.7500 - 0.0005
(19.05)
Ø 0.875
(22.22)
CW
3
1
+ 0.0000
SCHEMATIC
Ø 0.1248 - 0.0003
(3.17)
MTG. FACE
TOLERANCES: UNLESS OTHERWISE NOTED.
DECIMALS ± 0.005 ANGLES ± 2°
1
ADD 0.500 ± 0.002 (12.70) FOR EACH
ADDITIONAL SECTION
MECHANICAL SPECIFICATIONS
PARAMETER
Rotation
360° continuous
Bearing Type
Servo Mount:
Bushing Mount:
Ball bearing
Sleeve bearing
Torque (Maximum)
Servo, 1 Section
Bushing, 1 Section
Each Additional Section
STARTING
0.10 oz. - in (7.20 g - cm)
0.25 oz. - in (18.00 g - cm)
0.10 oz. - in (7.20 g - cm)
RUNNING
0.085 oz. - in (6.12 g - cm)
0.20 oz. - in (14.40 g - cm)
0.075 oz. - in (5.40 g - cm)
Runouts (Maximum)
Shaft Runout (TIR/in)
Pilot Dia. Runout (TIR)
Lateral Runout (TIR)
Shaft End Play
Shaft Radial Play
SERVO
0.002" (0.05 cm)
0.002" (0.05 cm)
0.002" (0.05 cm)
0.005" (0.13 cm)
0.002" (0.05 cm)
BUSHING
0.002" (0.05 cm)
0.002" (0.05 cm)
0.005" (0.13 cm)
0.005" (0.13 cm)
0.004" (0.10 cm)
Weight (Maximum)
Single Section:
Each Additional Section:
Ganging
Moment of Inertia
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0.6 oz. (17.0 g)
0.2 oz. (5.67 g)
6 sections max, terminal alignment, added sections within ± 10° of section 1 terminals
0.12 g - cm2 per section maximum
For technical questions, contact: [email protected]
Document Number: 57070
Revision: 02-Jul-07
Model 708
7/ "
8
(22.2 mm) Single Turn Conductive Plastic
Precision Potentiometer
Vishay Spectrol
MATERIAL SPECIFICATIONS
ENVIRONMENTAL SPECIFICATIONS
Housing and Lids
Vibration
Aluminum, anodized
15 g thru 2000 Hz
Shaft
Stainless steel, non-magnetic
non-passivated
Shock
Terminals
Brass plated for solderability
Rotational Life
Bushing Mount Hardware
Lockwasher Internal tooth:
Panel Nut:
Steel, nickel plated
Brass, nickel plated
50 g
Salt Spray
96 h
Load Life
Servo: 20 million shaft revolutions
Bushing: 5 million shaft revolutions
900 h
Temperature Range
- 55 °C to + 125 °C
MARKING
Unit
Identification
Units shall be marked with Spectrol name, model no, and data code, and on each section, resistance,
resistance tolerance, linearity and terminal identification
POWER RATING CHART
RESISTANCE ELEMENT DATA
RATED POWER IN W
(Ratings for cup No. 1.
Additional cups 75 % of values shown)
2.0
1.5
RESISTANCE
VALUES
(Ω)
MAXIMUM VOLTAGE
APPLICABLE
(V)
500
22
1K
32
2K
45
5K
71
10K
100
20K
141
50K
224
1.0
0.5
0
20
40
60
80
100
120
140
160
AMBIENT TEMPERATURE IN °C
Document Number: 57070
Revision: 02-Jul-07
For technical questions, contact: [email protected]
www.vishay.com
43
Legal Disclaimer Notice
Vishay
Disclaimer
All product specifications and data are subject to change without notice.
Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf
(collectively, “Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained herein
or in any other disclosure relating to any product.
Vishay disclaims any and all liability arising out of the use or application of any product described herein or of any
information provided herein to the maximum extent permitted by law. The product specifications do not expand or
otherwise modify Vishay’s terms and conditions of purchase, including but not limited to the warranty expressed
therein, which apply to these products.
No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this
document or by any conduct of Vishay.
The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications unless
otherwise expressly indicated. Customers using or selling Vishay products not expressly indicated for use in such
applications do so entirely at their own risk and agree to fully indemnify Vishay for any damages arising or resulting
from such use or sale. Please contact authorized Vishay personnel to obtain written terms and conditions regarding
products designed for such applications.
Product names and markings noted herein may be trademarks of their respective owners.
Document Number: 91000
Revision: 18-Jul-08
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