70
Vishay Spectrol
1 - 1/4” Rectangular
Multi-Turn Cermet
FEATURES
∑
Improved Wiper
∑
Unique “T” Slider Block Design Assure Excellent Setability
and Stability
∑
CRV of 3% or 3
W
∑
Temperature coefficient of 100 ppm/°C
∑
RT Tolerance ± 10% STD (± 5% Available)
DIMENSIONS
in inches (millimeters)
MTG. HOLES
0.093 Ø (2.36)
±
0.010
1.250
(31.75)
±
0.010
0.070
(1.78)
±
0.010
0.105
(2.67)
±
0.010
0.190
±
0.015
(4.83)
0.315
(8.00)
±
0.030
0.500
(12.70)
±
0.003
0.028 Ø .TYP
(0.71)
±
0.010
0.025
(0.63)
1.000
(25.40)
±
0.015
0.135
(343)
±
0.010
0.125
(3.18)
±
0.010
0.050
(1.27)
±
0.010
±
0.010
0.700
0.050
(1.27) (17.28)
0.63 (1.60)
MAXIMUM MENISCUS
±
0.010
0.300
(7.62) ADJUSTMENT SCREW
0.110 (2.79) Ø
HEAD SLOT
±
0.015 0.025 (0.64) WIDE X
0.260 0.030 (0.76) DEEP
(6.60)
#30 AWG LEADS INSULATED 6”
(152.40 MIN. LENGTH
±
0.010
0.100
(2.54)
0.030
(0.76)
ELECTRICAL SPECIFICATIONS
Resistance Range
Standard Resistance Tolerance
End Resistance
Actual Effective Electrical Travel
Contact Resistance Variation
Dielectric Withstanding Voltage
Insulation Resistance
Power Rating
Temperature coefficient of resistance
10
W
thru 2M
W
10% (para. 3.7.1)
2% maximum (para. 3.7.2)
20 turns nominal (para. 3.8)
3% or 3
W
, whichever is greater (para. 3.9)
1000 VAC at sea level, 350 VAC at 80.000 feet
(para. 3.10) 24.400 meters)
1000M
W
(para. 3.11)
1.0 watt at 85°C derated linearly to zero watts at 150°C (para. 3.5)
maximum voltage not to exceed 400 volts
± 100ppm/°C 100
W
to 2M
W
- 100 to 200ppm/°C 10
W
, 20
W
and 50
W
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84
For technical questions, contact: sfer@vishay.com
Document Number: 57076
Revision: 05-Aug-04
70
1 - 1/4” Rectangular Multi-Turn Cermet
Vishay Spectrol
MECHANICAL SPECIFICATIONS
Stops
Operating Torque
Rotational Life
Weight
Wiper idles against stops (para. 3.4.7.1)
5 oz-in (360 gm-cm) maximum (para. 3.12.1)
200 cycles minimum with loaded circuit, maximum change in resistance 2% (para 3.23) or
500 cycles minimum without discontinuity unloaded
0.116 oz (3.3 grams) maximum
ENVIRONMENTAL SPECIFICATIONS
MAXIMUM
TOTAL RESISTANCE
Operating Temperature Range
Salt Spray
Terminal Strength
Sealed
Thermal Shock
Shock
Vibration
Load Life
Low Temperature Operation
High Temperature Exposure
Resistance to Solder Heat
- 55°C to + 150°C
96 hours (para. 3.18)
2lbs (900gms) minimum push/pull (para. 3.24)
All units sealed to permit cleaning in common
solvents immersion
- 65°C to + 125°C (para. 3.13)
100g’s 6ms (para 3.16)
30g’s 10 to 2000Hz (para. 3.17)
1000 hours (para. 3.20)
- 55°C (para. 3.21)
+ 150°C (para. 3.22)
350°C for 3 seconds (para. 3.19)
–
–
–
–
2%
1%
1%
3%
2%
3%
1%
CHANGE
SETTING
–
–
–
–
1%
1%
1%
1%
2%
2%
–
MARKING
Unit Identification: Manufacturer’s name and part number including EIA resistance code, date code, circuit diagram and military
style designation as appicable
ORDERING INFORMATION
70
MODEL
L
TERMINAL STYLE
L
= Leadwire
Y
= Printed circuit pins
103
EIA RESISTANCE CODE
T000
SPECIAL
(omit if standard)
T601
Panel mount added to terminal style L
SAP PART NUMBERING GUIDELINES
M
7
0
L
1
0
3
K
B
4
0
MODEL
STYLE
OHMIC
VALUE
TOL
PACKAGING
CODE
SPECIAL
(IF APPLICABLE)
See the end of this data book for conversion tables
Document Number: 57076
Revision: 05-Aug-04
For technical questions, contact: sfer@vishay.com
www.vishay.com
85
Legal Disclaimer Notice
Vishay
Notice
Specifications of the products displayed herein are subject to change without notice. Vishay Intertechnology, Inc.,
or anyone on its behalf, assumes no responsibility or liability for any errors or inaccuracies.
Information contained herein is intended to provide a product description only. No license, express or implied, by
estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Vishay's
terms and conditions of sale for such products, Vishay assumes no liability whatsoever, and disclaims any express
or implied warranty, relating to sale and/or use of Vishay products including liability or warranties relating to fitness
for a particular purpose, merchantability, or infringement of any patent, copyright, or other intellectual property right.
The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications.
Customers using or selling these products for use in such applications do so at their own risk and agree to fully
indemnify Vishay for any damages resulting from such improper use or sale.
Document Number: 91000
Revision: 08-Apr-05
www.vishay.com
1
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