Page 1
Miniature Cermet Trimmers
FEATURES
• Industrial grade
• 0.5 Watt at 85 °C
• CECC 41100
• High stability
• Low temperature coefficient
T7
Vishay Sfernice
The T7 trimmer is only 7 mm (0.275”) in diameter and fits
almost anywhere.
A sealed plastic case protecting a quality cermet track
guarantees high performance and proven reliability.
Adjustments are made easier by the clear scale readings.
Competitively priced, the T7 is ideally suited to all industrial
applications.
DIMENSIONS in millimeters
T7 YA
0.4
2.54
c
b
a
2.54
4.5 min
Ø 4
0.5
2.54
6
• Wide resistance range
• Easy to read scale
2.54
2.54
4.5 min
T7 YB
c
Ø 4
0.6
0.5
b
a
0.3
6
Ø7
• Tolerances unless otherwise specified ± 0.5 mm
CIRCUIT DIAGRAM
a
(1)
b
(2)
cw
Document Number: 51015 For technical questions, contact: sfer@vishay.com
Revision: 24-Jan-06 See also: Application notes
c
(3)
Ø 7
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39
Page 2
T7
Vishay Sfernice
Miniature Cermet Trimmers
ELECTRICAL SPECIFICATIONS
Resistive Element Cermet
Electrical Travel 270° ± 15°
Resistance Range 10 Ω to 2.2 MΩ
Standard Series E3 1 - 2.2 - 4.7 and on request 1 - 2 - 5
Tolerance Standard Standard ± 20 %
On Request ± 10 %
Power Rating Linear 0.5W at 85 °C
Logarithmic not applicable
Temperature Coefficient See Standard Resistance Element Data
Limiting Element Voltage (Linear Law) 250 V
Contact Resistance Variation 3 % or 3 Ω
End Resistance (Typical) 1 Ω
Dielectric Strength (RMS) 1000 V
Insulation Resistance 10
MECHANICAL SPECIFICATIONS
POWER RATING CHART
Mechanical Travel 300° ± 5°
Operating Torque (max. Ncm) 2
End Stop Torque (max. Ncm) 4
0.50
Unit Weight (max. g) 0.5
6
MΩ
ENVIRONMENTAL SPECIFICATIONS
Temperature Range – 55 °C to + 125 °C
Climatic Category 55 / 100 / 56
Sealing enables cleaning
except with water
IP64
0.25
POWER IN WATT
0
0
20
PERFORMANCE
TESTS CONDITIONS
Load Life
1000 hours at rated power
90'/30' - ambient temperature 70 °C
Phase A dry heat 100 °C
Climatic Sequence
Phase B damp heat
Phase C cold –55 °C
Phase D damp heat 5 cycles
Long Term Damp Heat 56 days
Rapid Temperature Change 5 cycles – 55 °C at + 125 °C ± 1 %
50 g 11 ms
Shock
3 successive shocks
in 3 directions
10 - 55 Hz
Vibration
0.75 mm or 10 g
during 6 hours
Rotational Life 200 cycles
www.vishay.com For technical questions, contact: sfer@vishay.com
40 See also: Application notes
± 3 % ± 4 %
Contact resistance variation: < 3 % Rn
± 2 % ± 3 %
± 2 % ± 3 %
Dielectric strength: 1000 V RMS
Insulation resistance: > 10
± 0.5 % ± 1 %
± 0.5 %
± 3 %
Contact resistance
variation: < 3 % Rn
100 125 140
40
AMBIENT TEMPERATURE IN DEGREES CELSIUS
70
85
TYPICAL VALUES AND DRIFTS
ΔRT
RT
(%)
4
ΔR
R1-2
MΩ
ΔV
V1-3
ΔV
V1-3
Document Number: 51015
Revision: 24-Jan-06
1-2
1-2
1-2
(%)
≤ ± 2 %
≤ ± 1
%
Page 3
T7
Miniature Cermet Trimmers
STANDARD RESISTANCE ELEMENT DATA
STANDARD
RESISTANCE
VAL UE S
Ω W V mA ppm/°C
10
22
47
100
220
470
1k
2.2k
4.7k
10k
22k
47k
100k
220k
470k
1M
2.2M
MAX.
POWER
AT 85 °C
0.028
LINEAR LAW
MAX.
WORKING
VOLTAGE
0.5 2.2
10.5
15.3
22.4
33.2
48.5
70.7
0.5
0.28
0.13
0.06
3.3
4.8
7
105
153
224
250
250
250
250
MAX.
WIPER
CUR.
224
150
103
70
47
32
22
15
10
7
4.8
3.2
2.2
1.1
1.53
0.25
0.11
T.C .
–55 °C
+125 °C
0
+ 200
± 100
Vishay Sfernice
MARKING
Printed:
– VISHAY trademark
– series
– YA or YB style
– ohmic value (in
– manufacturing date
– marking of terminal: 3.
SEALING
T7 trimming potentiometers are sealed against dust and PC
boards cleaning (but not with water).
Ω, kΩ, MΩ)
PACKAGING
– In bulk (box of 200 pieces), code BO200
– On request in Tube, code TU50
ORDERING INFORMATION
T7
SERIES
YA
STYLE
YA - YB BO200
470 KΩ
OHMIC VALUE
SAP PART NUMBERING GUIDELINES
T7YA474MB40
± 20 %
TOLERANCE
BO200
PA CK A GI N G
On request: TU50
e2
LEAD FINISH
e2: SnAg alloy
MODEL
See the end of this data book for conversion tables
Document Number: 51015 For technical questions, contact: sfer@vishay.com
Revision: 24-Jan-06 See also: Application notes
STYLE OHMIC
VALUE
TOL
PACKAGING
CODE
SPECIAL
(IF APPLICABLE)
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41
Page 4
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 www.vishay.com
Revision: 08-Apr-05 1
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