Z203 (Z1-Foil)
Vishay Foil Resistors
Ultra High Precision Z1-Foil Resistor for Metrology and Laboratory
with TCR of 0.5 ppm/°C Maximum, Tolerance to 0.005 % (50 ppm)
and Load Life Stability of 0.005 % (50 ppm), + 70 °C for 10 000 h
INDUSTRY BREAKTHROUGH
FEATURES
Temperature coefficient of resistance (TCR):
0.5 ppm/°C maximum (+ 25 °C to + 125 °C)
Power coefficient of resistance “R due to self
heating”: 5 ppm at rated power
Rated power: 0.6 W at 70 °C
0.3 W at 125 °C
Z203 resistors are not restricted to standard values or
minimum order quantity, and can be supplied from 1 unit
with as-required values (e.g. 9.997 k vs. 10 k) at no
extra cost or delivery time.
Resistance tolerance: to 0.005 % (50 ppm)
Load life stability: to
0.005 % (50 ppm) at 70 °C,
10 000 h at 0.15 W
Resistance range: 10 to 100 k
Our application engineering department is available to
advise and to make recommendations. For non-standard
technical requirements and special applications, please
contact us.
Vishay Foil resistors are not restricted to standard values;
specific “as-required” values can be supplied at no extra
cost or delivery (e.g. 1K2345 vs. 1K)
Electrostatic discharge (ESD) up to 25 000 V
Non-inductive, non-capacitive design
Rise time: 1 ns, effectively no ringing
Current noise: 0.010 µVRMS/V of applied voltage (< - 40 dB)
Thermal EMF: 0.1 µV/°C max.
FIGURE 1 - Z203 ON A PC BOARD (1)
Connection
Distant
from
A
Solder
Point
Thermal stabilization time < 1 s (nominal value achieved
within 10 ppm of steady state value)
PCB
Voltage coefficient: < 0.1 ppm/V
Non-inductive: 0.08 µH
Terminal finish: lead (Pb)-free or tin/lead alloy
Maximum working voltage: 300 V
Drop in replacement for S102C/K
Matched sets are available per request
Prototype quantities available in just 5 working days
or sooner. For more information, please contact
foil@vishaypg.com
A
A - A
Note
(1) The leads on the Z203 connect to the Bulk Metal® Foil resistive
element at the top of the package using solder-free, all welded
construction. This high-reliability enhancement protects the
terminations from initial board-assembly and subsequent board
flexation stresses. The welded construction completely eliminates
the possibility of latent failures due to solder reflow and
solder-starved internal connections.
For better performances please contact us
Compliant to RoHS directive 2002/95/EC
FIGURE 2 - POWER DERATING CURVE
TABLE 1 - TOLERANCE AND TCR VS.
RESISTANCE
- 55 °C
+ 70 °C
200 %
175 %
150 %
125 %
100 %
75 %
50 %
25 %
0
Double Rated Power
TYP. TCR
TYP. TCR
AND MAX. AND MAX.
STANDARD
TOLERANCE
(%)
SPREAD
(ppm/°C)
(+ 25 °C to
+ 125 °C)
SPREAD
(ppm/°C)
(- 55 °C to
+ 25 °C)
VALUE
Rated Power
Recommended
operation for
< 150 ppm
100 to 100 k
80 to < 100
50 to < 80
25 to < 50
10 to < 25
0.005 %
0.005 %
0.01 %
0.01 %
0.02 %
0.2 0.3
0.2 0.4
0.2 0.6
0.2 0.8
0.2 1.0
0.2 1.8
0.2 2.0
0.2 2.3
0.2 2.6
0.2 2.8
ΔR after 2000 h
load life
- 75 - 50 - 25
0
+ 25 + 50 + 75 + 100 + 125 + 150 + 175 + 200
Ambient Temperature (°C)
* Pb containing terminations are RoHS compliant, exemptions may apply
Document Number: 63186
Revision: 29-Mar-10
For any questions, contact: foil@vishaypg.com
www.foilresistors.com
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