*See Figure 1, next page.
STANDARD RESISTANCE VALUES STANDARD POWER RATING @ NO. OF
鈩?/div>
)
TOLERANCES + 85
擄
C AMBIENT TURNS
20, 50, 100,
200, 500, 1K
2K, 5K
鹵
10%
0.25W
21
鹵
2
NOTES:
1. Maximum is 1.0% A.Q.L. standard for all specifications except TCR. (For TCR information see notes 2 and 3). 鈥淭ypical鈥?is
a designers reference which represents that 85% of the lots supplied, over a long period of time, will be at least the figure
stated or better.
2. Maximum TCR applies to the 3
蟽
(sigma) limit or 99.73% of a production lot. (Measured end-to-end with wiper off the element.)
3. Measurements of TCR through the wiper are influenced more by setting stability and the percentage of the total resistance
in use (at the wiper) than by fundamental resistance change due to temperature alone. The parameter shown is a 2
蟽
distribution typifying the behavior of the device when used with 40% or more of the total resistance in use.
4. Derated linearly from full power @ + 85擄C to zero (0) watts @ + 150擄C. See Figure 2, next page.
5. Independent of resistance value 3 ohms maximum available on special request.
Special Available Options: Special marking
Burn-in and screening operations
TRIMMERS
ADDITIONAL SPECIFICATIONS:
鈥?Contact Resistance Variation 鈥?CRV (noise): 10 ohms Maximum
5
鈥?Hop-off: 0.25% Typical; 1.0% Maximum
鈥?Operating Temperature Range: 鈥?55擄C to + 150擄C
鈥?Adjustment Turns: 21
鹵
2
鈥?Mechanical Stops: Wiper Idles 鈥?No Discontinuity
VISHAY FOIL 鈥?FRANCE +33.4.93.37.28.24 FAX: +33.4.93.37.27.31
鈥?GERMANY +49.9287.710 FAX: +49 9287.70435
鈥?ISRAEL +972.3.557.0945 FAX: +972.3.558.9121
TABLE 2 - ORDERING INFORMATION - 1268 SERIES PARTS
Please specify Vishay Model 1268 Precision Trimming
Potentiometers as follows:
Example:
1268
MODEL NO.
W
TERMINATION
STYLE
100R
RESISTANCE
VALUE
10%
TOLERANCE
See Table 1 for details. See Figure 1, next page for Standard Marking.
鈥?ITALY + 39.2.300.11919 FAX: +39.2.300.11999
鈥?JAPAN +81.42.729.0661 FAX: +81.42.729.3400
鈥?SINGAPORE +65.788.6668 FAX: +65.788.0988
鈥?SWEDEN +46.8.594.70590 FAX: +46.8.594.70581
鈥?UK +44 191 514 8237 FAX: +44 1953 457 722
鈥?USA +1 610 407-4800 FAX: +1 610 640-9081
Document Number: 63059
Revision 06-Aug-02
www.vishay.com
161
VISHAY
1
2
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