1260 Datasheet, PDF (1/5 Pages) Vishay Siliconix – Bulk Metal® Foil Technology Precision Trimming Potentiometers,3/8 Inch Square, RJ24 Style, Designed to Meet or Exceed the

1260
Vishay Foil Resistors
Bulk Metal^® Foil Technology Precision Trimming Potentiometers,
3/8 Inch Square, RJ24 Style, Designed to Meet or Exceed the
Requirements of MIL-PRF-39035, Char. H
FEATURES
• Temperature coefficient of resistance (TCR):
± 10 ppm/°C (- 55 °C to + 150 °C ref. at + 25 °C);through
the wiper²⁾; ± 25 ppm/°C (see table 2 for low values)
• Load life stability: 0.1 % typical ΔR, 1.0 % maximum ΔR
under full rated power at + 85 °C for 10 000 h
• Settability: 0.05 % typical; 0.1 % maximum
• Setting stability: 0.1 % typical; 0.5 % maximum
• Power rating: 0.25 W at + 85 °C
• Resistance range: 5 Ω to 10 kΩ
• Resistance tolerance: ± 5 %, ± 10 %
• “O” ring prevents ingress of fluids during any board
cleaning operation
• Terminal finishes available: tin/lead
TABLE 1 - MODEL SELECTION^*
MODEL
TERMINATION STYLE
1260
Note:
* See figure 1
W-edge mount, top adjust
X-edge mount, side adjust
TABLE 2 - 1260 (RJ26) SERIES ELECTRICAL
SPECIFICATIONS
Temperature Coefficient of
Resistance (TCR) 50 Ω to 10 kΩ
End-to-end¹⁾
± 10 ppm/°C maximum
(- 55 °C to + 150 °C,
+ 25 °C ref.)
Temperature Coefficient of
Resistance 5, 10 and 20 Ω
± 20 ppm/°C
Through the wiper²⁾
Stability
Load life at 10 000 h
Power Rating³⁾
Settability
Setting Stability
Contact Resistance
Variation - CRV (noise)
Hop-off
High-Frequency Operation
Rise/decay time
Inductance
Capacitance
Operating Temperature Range
± 25 ppm/°C
0.1 % typical ΔR
1.0 % maximum ΔR
(under Full Rated Power
of 0.25 W at + 85 °C)
0.25 W at + 85 °C
0.05 % typical;
0.1 % maximum
0.1 % typical;
0.5 % maximum
3 Ω typical;
10 Ω maximum
0.25 % typical;
1.0 % maximum
1 ns without ringing
0.08 µH typical
0.5 pF typical
- 55 °C to + 150 °C
AVERAGE
WEIGHT (g)
0.4
POWER RATING
at + 85 °C AMBIENT
0.25 W
NO. OF TURNS
21 ± 2
TABLE 3 - VALUES VS. TOLERANCES
STANDARD RESISTANCE VALUES
(in Ω)
STANDARD
TOLERANCE
5, 10
± 10 %
20, 50, 100, 200, 500, 1K, 2K, 5K, 10K
±5%
TABLE 4 - MECHANICAL SPECIFICATIONS
Adjustment Turns
21 ± 2
Mechanical Stops
Wiper idles - no discontinuity
Internal Terminations All welded - no flux
Case Material
Diallyl-phthalate: black (DAP)
Shaft Torque
3 oz. in. maximum
Backlash
0.005 % typical
Document Number: 63054
Revision: 29-Feb-08
For any questions, contact: [e-mail]
www.vishay.com
1