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
Accutrim™ 1202 Styles
Vishay Foil Resistors
Document Number: 63055 For any questions, contact: foil@vishaypg.com www.vishayfoilresistors.com
Revision: 11-Jun-13 1
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.
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 an
d unidirectional resistance with
leadscrew adjustment
L
oad life stability: 0.1 % typical R, 0.5 % maximum R
under full rated power at + 85 °C** for 2000 h
Se
ttability: 0.05 % typical; 0.1 % maximum
Se
tting stability: 0.1 % typical; 0.5 % maximum, SS
Po
wer rating: 0.5 W at + 85 °C
R
esistance range: 2 to 20 k
“O“-ring prev
ents ingress of fluids during any board
cleaning operation
El
ectrostatic discharge (ESD) up to 25 000 V
T
erminal finish: gold plated (tin/lead finish is available on
request; see notes at figures 1 and 2)
CERMET
Wiper Travel
Resistance
Wiper Travel
Resistance
BULK METAL
®
FOIL
WIREWOUND
Wiper Travel
Resistance
TABLE 1 - MODEL SELECTION
MODEL
TERMINATION
STYL
E
AVERAGE
WEI
GHT
(g)
POWER
RATI
NG
at + 85 °C
AMBIENT
NO. OF
TURNS
1202
P-In line PC pins 2.5
0.5 W 25 ± 2
Y-staggered PC pins
(1)
2.5
L-flexible wire leads 3.3
LB-flexible wire leads
wit
h bushings
(panel mounted)
5.1
Note
• See Figures 1 and 2
TABLE 2 - VALUES VS. TOLERANCES
STANDARD RESISTANCE
VALUES (in )
STANDARD TOLERANCES
2, 5, 10
(2)
± 10 %, ± 20 %
20, 50, 100, 200, 250, 500,
1K, 2K, 5K, 10K, 20K
5 %, 10 %
TABLE 3 - 1202 (RJ12) SERIES
ELECTRICAL SPECIFICATIONS
Temperature Coefficient of Resistance (TCR), 50 and up:
End-to-end
(3):
± 10 ppm/°C (- 55 °C to + 150 °C, ref. + 25 °C)
2 , 5 , 10 , 20 ± 20 ppm/°C (- 55 °C to + 150 °C,
ref. + 25 °C)
Through the wiper
(4)
:
± 25 ppm/°C (- 55 °C to + 150 °C,
ref. + 25 °C)
Stability:
Load life at 2000 h, under full rated power of 0.5 W at + 85 °C;
0.1 %
typical R; 0.5 % maximum R
Load life at 10 000 h, under full rated power of 0.5 W at + 85 °C;
0.1 %
typical R; 1.0 % maximum R
Power Rating
(5)
:
0.5 W at + 85 °C
Settability:
0.05 % typical; 0.1 % maximum
Setting Stability: 0.1 % typical; 0.5 % maximum
Contact Resistance variation - CRV (noise):
3
typical;
10
maximum
Hop-off:
0.25 % typical; 1.0 % maximum
High-Frequency Operation to 100 MHz:
Rise time: 10 ns at 1 k
Inductance: 0.08 µH typical
Capacitance: 0.5 pF typical
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
** See a definition of typical in the VPG glossary at the link
http://www.vishaypg.com/foil-resistors/faq/glossary/
