Accutrim™ 1202
Vishay Foil Resistors
Bulk Metal® Foil Ultra High Technology Precision Trimming Potentiometers,
1 1/4" Rectilinear, RJ12 Style, Designed to Meet or Exceed The Requirements
of MIL-PRF-22097, Char. F with Smooth and Unidirectional Output
FEATURES
• Temperature coefficient of resistance (TCR):
10 ppm/°C maximum (3)
(- 55 °C to + 150 °C ref. at + 25 °C);
through the wiper (4)
;
25 ppm/°C
• A smooth and unidirectional resistance with
leadscrew adjustment
• Load life stability: 0.1 % typical ΔR, 0.5 % maximum ΔR
under full rated power at + 85 °C for 2000 h
• Settability: 0.05 % typical; 0.1 % maximum
• Setting stability: 0.1 % typical; 0.5 % maximum, ΔSS
• Power rating: 0.5 W at + 85 °C
INTRODUCTION
Vishay Foil precision trimmers have the Bulk Metal® Foil
resistive element which possesses a unique inherent
temperature and load life stability. Plus, their advanced
virtually back lash-free adjustment mechanism makes them
easy to set quickly and accurately and keeps the setting
exactly on target.
• Resistance range: 2 Ω to 20 kΩ
• “O“-ring prevents ingress of fluids during any board
cleaning operation
• Electrostatic discharge (ESD) up to 25 000 V
• Terminal finish: gold plated (tin/lead finish is available on
request)
BULK METAL
FOIL
WIREWOUND
CERMET
Wiper Travel
Wiper Travel
Wiper Travel
TABLE 1 - MODEL SELECTION
TABLE 2 - VALUES VS. TOLERANCES
POWER
AVERAGE
STANDARD RESISTANCE
STANDARD TOLERANCES
VALUES (in Ω)
TERMINATION
STYLE
RATING
NO. OF
MODEL
WEIGHT
(g)
at + 85 °C TURNS
AMBIENT
P-In line PC pins
Y-staggered PC pins (1)
L-flexible wire leads
LB-flexible wire leads
with bushings
2.5
2.5
3.3
2, 5, 10
10 % (2)
,
20 %
1202
0.5 W
25
2
20, 50, 100, 200, 250, 500,
1K, 2K, 5K, 10K, 20K
5 %, 10 %
5.1
Note
• See Figures 1 and 2
TABLE 3 - 1202 (RJ12) SERIES ELECTRICAL SPECIFICATIONS
Temperature Coefficient of Resistance (TCR), 50 Ω and up
10 ppm/°C maximum (- 55 °C to + 25 °C)
10 ppm/°C maximum (+ 25 °C to + 150 °C)
End-to-end (3)
2 Ω, 5 Ω, 10 Ω, 20 Ω
20 ppm/°C (- 55 °C to + 150 °C, ref. + 25 °C)
25 ppm/°C (- 55 °C to + 150 °C, ref. + 25 °C)
Through the wiper (4)
Stability
Load life at 2000 h, under full rated power of 0.5 W at + 85 °C
Load life at 10 000 h, under full rated power of 0.5 W at + 85 °C
0.1 % typical ΔR; 0.5 % maximum ΔR
0.1 % typical ΔR; 1.0 % maximum ΔR
0.5 W at + 85 °C
Power Rating (5)
Settability
Setting Stability
Contact Resistance variation - CRV (noise)
Hop-off
0.05 % typical; 0.1 % maximum
0.1 % typical; 0.5 % maximum
3 Ω typical; 10 Ω maximum
0.25 % typical; 1.0 % maximum
High-Frequency Operation
Rise time
to 100 MHz
10 ns at 1 kΩ
0.08 µH typical
0.5 pF typical
Inductance
Capacitance
Operating Temperature Range
- 55 °C to + 150 °C
Note
• Refer to page 4 for footnotes
* Pb containing terminations are not RoHS compliant, exemptions may apply
Document Number: 63055
Revision: 25-Mar-10
For any questions, contact: foil@vishaypg.com
www.foilresistors.com
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