www.vishay.com For technical questions, contact: sfer@vishay.com Document Number: 50026
134 Revision: 23-Mar-09
RT25
Vishay Sfernice
Wirewound Rheostat/Potentiometer
FEATURES
•25 W at 25 °C
•CCTU 05-03B (PA1)
•Vitreous - RT style
•Compliant to RoHS directive 2002/95/EC
MECHANICAL SPECIFICATIONS
Mechanical Protection Vitreous
Mechanical Travel 300° ± 5°
Operating Torque 1 Ncm to 10 Ncm
End Stop Torque 50 Ncm
Unit Weight 80 g
ENVIRONMENTAL SPECIFICATIONS
Temperature Range - 55 °C + 320 °C
Climatic Category CCTU 454
CEI 55/200/56
LOCKING DEVICE
This is supplied as an option.
The available spindle length is according to the panel
thickness.
Order reference: DBA6
ADAPTATION BOARD
This enables 2 point mounting instead of bush mounting. The
adaptation board is supplied as an option with 2 mounting
screws. Consequently, the available spindle length is
reduced by 9.5 mm.
DIMENSIONS in millimeters
ADAPTATION BOARD PANEL CUT OUT DETAILS
PANEL CUT OUT DETAILS
RT25-PA1
7.6
Ø 10.5
2 holes Ø 5
23.5 23.5
Ø 4.5
12.5 ± 0.5
Ø 10.5
23
60°
Ø 2.2
38 25 4
M10 x 0.75
- 0
Ø 6 - 0.05
12
9 ± 1
22 ± 2
28 AS
MOUNTING SIDE
ELECTRICAL SPECIFICATIONS
Ohmic Range 1 Ω to 4.7 kΩ
Tolerance Standard ± 10 %
Power Rating 25 W at 25 °C
Variation Law Standard Linear
On request Sectorial winding
Dielectric Strength 1000 VRMS
Insulation Resistance 103 MΩ (500 VCC)
1 ± 0.2
13
2 tightening screws
spanner n° 14
max. panel thickness
6.5
Document Number: 50026 For technical questions, contact: sfer@vishay.com www.vishay.com
Revision: 23-Mar-09 135
RT25
Wirewound Rheostat/Potentiometer Vishay Sfernice
For any special requirement on request: spindle flats, etc.
Please supply detailed drawing.
MARKING
Vishay Sfernice trademark, series, style, power rating in watts, ohmic value (in Ω or kΩ), tolerance (in %), maximum current in
A, manufacturing date.
PARTICULAR CHARACTERISTICS
NOMINAL
RESISTANCE
Ω
MAX. SERVICE
VOLTAGE
V
MAX. CURRENT
THROUGH WIPER
mA
1 5 5000
1.5 6.12 4080
2.2 7.42 3370
3.3 9.08 2750
4.7 10.8 2300
6.8 13 1920
10 15.8 1580
15 19.4 1290
22 23.5 1070
33 28.7 870
47 34.3 730
68 41.2 605
100 50 500
150 61.2 408
220 74.2 337
330 90.8 275
470 108 230
680 130 192
1K 158 158
1.5K 194 129
2.2K 235 107
3.3K 287 87
4.7K 343 73
SPINDLES
Ø
mm
DISTANCE TO MOUNTING
PLATE mm
SCREW DRIVER
SLOT
CODE
6
22
With ASF
25 Without
AM
With AMF
50 Without
AL
6
22 Without
AS
56
47
4 holes Ø 3.5
Ø 12
5
6
7
8
9
10
0
1
2
3
4
56
47
DIAL CG57 (OPTION)
18
Ø 7
Ø 43
21
COMMAND SHAFT 29JF (OPTION)
ORDERING INFORMATION
RT
025 ASF 2201 K B XXX
MODEL STYLE SPINDLE OHMIC VALUE TOLERANCE PACKAGING SPECIAL DESIGN
GLOBAL PART NUMBER INFORMATION
GLOBAL
MODEL SIZE LOCKING
DEVICE (OPT.)
WINDING
(OPT.)
COMMAND
SHAFT OHMIC VALUE TOLERANCE PACKAGING SPECIAL
RT 025 D BXXX
or
BXXXX
As applicable
xxx(x) =
Internal
number
AS = Standard
(Diam: 6 mm)
AM
AMF
AL
ASF
The three first digits are
significant figures and the
last digit specifies the
number of zeros to follow.
R designates decimal point.
2002 = 20 kΩ
4700 = 470 Ω
10R0 = 10 Ω
0R01 = 0.01 Ω
J = 5 %
K = 10 %
B = Bulk
BO10
No standard
packaging:
N = Bulk,
qty. open
As applicable
Ex = DXxx
25AS10R KT 0R 0B
Document Number: 91000 www.vishay.com
Revision: 11-Mar-11 1
Disclaimer
Legal Disclaimer Notice
Vishay
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.
