Page 1
3/4" Rectangular Multi-Turn Cermet Trimmer
1
3
1.5 (0.06)
4.8 (0.19) ± 0.2
4.8 (0.19) ± 0.2
2.54 (0.1) ± 0.2
(1)
6.4 (0.25)
± 0.2
BASE LEVEL
19 (0.748)
5.3 (0.2)
± 0.9 (0.035)
7.6 (0.3)
± 0.2
(1)
5.1 (0.2)
± 0.2
(1)
3.15 (0.125)
(1)
2
Ø 0.5
(0.02)
Ø 2.5 (0.1)
0.6 (0.02)
0.6 (0.02)
SHAFT
DIMENSIONS in millimeters (± 0.5 mm)
T18
Vishay Sfernice
FEATURES
• 0.75 W at 70 °C
• Wide ohmic range (10 Ω to 5 MΩ)
• Multi-finger wiper for better CRV
• Tests according to CECC 41000 or IEC 60393-1
• Industrial grade
• Compliant to RoHS Directive 2002/95/EC
Note
(1)
To be measured at base level
Document Number: 51027 For technical questions, contact: sfer@vishay.com
Revision: 10-Nov-10 See also Application Note: www.vishay.com/doc?51001
and www.vishay.com/doc?52029 79
www.vishay.com
Page 2
T18
a
(1)
b
(2)
c
(3)
cw
Vishay Sfernice
3/4" Rectangular Multi-Turn Cermet Trimmer
ELECTRICAL SPECIFICATIONS
Resistive element Cermet
Electrical travel 15 turns ± 1
Resistance range 10 Ω to 5 MΩ
Standard series E3 1 - 2.2 - 4.7 and 1 - 2 - 5
Tolerance
Power rating
Standard ± 10 %
On request ± 5 %
Linear 0.75 W at + 70 °C
0.75
0.50
POWER IN W
0.25
0
0
20
AMBIENT TEMPERATURE IN °C
60
40
70
80
100
125 140
Circuit diagram
Temperature coefficient See Standard Resistance Element table
Limiting element voltage (linear law) 400 V
Contact resistance variation 1 % Rn or 1 Ω max.
End resistance 1 % or 2 Ω
Dielectric strength (RMS) 1000 V
Insulation resistance (500 V
) 103 MΩ min.
DC
MECHANICAL SPECIFICATIONS
Mechanical travel 18 turns ± 5
Operating torque (max. Ncm) 3.5
End stop torque Clutch action
Net weight (max. g) 1.2
Wiper (actual travel) Positioned at approx. 50 %
Terminals e3: Pure Sn
ENVIRONMENTAL SPECIFICATIONS
Temperature range - 55 °C to + 125 °C
Climatic category 55/125/56
Sealing Fully sealed - IP67
www.vishay.com For technical questions, contact: sfer@vishay.com
80 See also Application Note: www.vishay.com/doc?51001
and www.vishay.com/doc?52029 Revision: 10-Nov-10
Document Number: 51027
Page 3
T18
3/4" Rectangular Multi-Turn Cermet Trimmer
PERFORMANCES
TESTS CONDITIONS
Load life
Climatic sequence
Long term damp heat 56 days
Rapid temp. change
Shock
Vibration
Rotational life 200 cycles
1000 h at rated power
90'/30' - ambient temp. 70 °C
Phase A dry heat 125 °C
Phase B damp heat
Phase C cold - 55 °C
Phase D damp heat 5 cycles
5 cycles
- 55 °C to + 125 °C
50 g at 11 ms
3 successive shocks
in 3 directions
10 Hz to 55 Hz
0.75 mm or 10 g
during 6 h
TYPICAL VALUES AND DRIFTS
(%) ΔR
ΔR
T/RT
± 4 %
Contact res. variation: < 3 % Rn
± 0.5 % ± 1 %
± 3 %
Dielectric strength: 1000 V
Insulation resistance: > 20 MΩ
± 0.5 % ΔV
± (2 % + 3 Ω)± 2 %
± 2 % ΔV
± (3 % + 3 Ω)
Contact res. variation: < 2 % Rn
RMS
Vishay Sfernice
(%)
1-2/R1-2
-
± 1 %
/ΔV
/ΔV
≤ ± 2 %
1-3
≤ ± 2 %
1-3
-
1-2
1-2
STANDARD RESISTANCE ELEMENT DATA
STANDARD
RESISTANCE
VALUES
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
4.7M
MAX.
POWER
AT 70 °C
0.75
0.75
0.75
0.75
0.75
0.75
0.75
0.75
0.75
0.75
0.75
0.75
0.75
0.75
0.34
0.16
0.07
0.03
LINEAR LAW
MAX.
WORKING
VOLTAGE
2.74
4.06
5.94
8.66
12.8
18.8
27.4
40.6
59.4
86.6
128
188
274
400
400
400
400
400
MAX.
WIPER
CUR.
274
185
126
87
58
40
27
18
13
8.7
5.8
4.0
2.7
1.8
0.85
0.40
0.18
0.09
TYPICAL
TCR
- 55 °C
+ 125 °C
± 100
MARKING
• Vishay trademark
• Vishay part number or model and ohmic value (in Ω, kΩ, MΩ)
• Manufacturing date
• Marking of terminal 3
PACKAGING
• In tube of 25 pieces code T10 (TU25)
Document Number: 51027 For technical questions, contact: sfer@vishay.com
Revision: 10-Nov-10 See also Application Note: www.vishay.com/doc?51001
and www.vishay.com/doc?52029 81
www.vishay.com
Page 4
T18
Vishay Sfernice
3/4" Rectangular Multi-Turn Cermet Trimmer
ORDERING INFORMATION (Part Number)
8 224KT11 0T
Model OHMIC VALUE TOLERANCE PACKAGING
T18 From
10 Ω to 5 MΩ
224 = 220 kΩ
DESCRIPTION (for information only)
T18 220K ± 10 % TU25 e3
MODEL VALUE TOLERANCE PACKAGING LEAD FINISH
K = 10 %
On request J = 5 %
T10 = Tube
25 pieces
SPECIAL
NUMBER
(If applicable)
Given by Vishay
for custom design
www.vishay.com For technical questions, contact: sfer@vishay.com
82 See also Application Note: www.vishay.com/doc?51001
and www.vishay.com/doc?52029 Revision: 10-Nov-10
Document Number: 51027
Page 5
Legal Disclaimer Notice
Vishay
Disclaimer
ALL PRODUCT, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE TO IMPROVE
RELIABILITY, FUNCTION OR DESIGN OR OTHERWISE.
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 in any datasheet or in any other
disclosure relating to any product.
Vishay makes no warranty, representation or guarantee regarding the suitability of the products for any particular purpose or
the continuing production of any product. To the maximum extent permitted by applicable law, Vishay disclaims (i) any and all
liability arising out of the application or use of any product, (ii) any and all liability, including without limitation special,
consequential or incidental damages, and (iii) any and all implied warranties, including warranties of fitness for particular
purpose, non-infringement and merchantability.
Statements regarding the suitability of products for certain types of applications are based on Vishay’s knowledge of typical
requirements that are often placed on Vishay products in generic applications. Such statements are not binding statements
about the suitability of products for a particular application. It is the customer’s responsibility to validate that a particular
product with the properties described in the product specification is suitable for use in a particular application. Parameters
provided in datasheets and/or specifications may vary in different applications and performance may vary over time. All
operating parameters, including typical parameters, must be validated for each customer application by the customer’s
technical experts. Product specifications do not expand or otherwise modify Vishay’s terms and conditions of purchase,
including but not limited to the warranty expressed therein.
Except as expressly indicated in writing, Vishay products are not designed for use in medical, life-saving, or life-sustaining
applications or for any other application in which the failure of the Vishay product could result in personal injury or death.
Customers using or selling Vishay products not expressly indicated for use in such applications do so at their own risk and agree
to fully indemnify and hold Vishay and its distributors harmless from and against any and all claims, liabilities, expenses and
damages arising or resulting in connection with such use or sale, including attorneys fees, even if such claim alleges that Vishay
or its distributor was negligent regarding the design or manufacture of the part. Please contact authorized Vishay personnel to
obtain written terms and conditions regarding products designed for such applications.
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. Product names and markings noted herein may be trademarks of their respective owners.
Document Number: 91000 www.vishay.com
Revision: 11-Mar-11 1
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