Z201
Vishay Foil Resistors
Ultra-Performance Aerospace and
Instrumentation Resistor
FEATURES
• Industry Breakthrough
• Nominal TCR: 0.2ppm/°C MIL range*
• Load Life Stability: 0.005% 2000 Hrs @ 0.1Watt
• Absolute Tolerance: To 0.005%
Product may not
be to scale
• Resistance Range: 100Ω to 100KΩ
• Power Rating: 0.6Watts @ 70°C (0.3 Watts @ 125°C)
• Current Noise: 0.010µV/V (RMS)
• Thermal EMF: 0.1µV/°C Max; 0.05 Typical
• Rise/Decay Time: 1.0 Nanosecond @ 1KΩ
The Z201 (0.150 lead spacing) and Z201L (0.200 lead spacing)
Bulk Metal® Foil resistors represent an industry breakthrough.
This is the 3rd in a series of ultra-precision resistors since the
first Bulk Metal® Foil resistor was introduced by Vishay in 1962.
Each represents an improvement on the earlier model. The
TCR slope of the Z201 is 0.2ppm/°C (MIL range) and is an
order of magnitude better than the original S102C. The Bulk
Metal® Foil resistor is the ultimate choice in the most demanding
analog applications.
TABLE 1 - Z201 SPECIFICATIONS
*TCR
0.1ppm/°C Nominal (0°C to 60°C)
0.2ppm/°C Nominal (- 55°C to + 125°C)
0.8ppm/°C Maximum (- 55°C to + 125°C)
Stability
Load Life at 2,000 Hrs
± 0.005% Max ∆R @ 0.1W/+ 70°C
± 0.015% Max ∆R @ 0.3W/+ 125°C
Load Life at 10,000 Hrs
Shelf Life Stability
Current Noise
± 0.01% Max ∆R @ 0.05W/+ 125°C
± 0.05% Max ∆R @ 0.3W/+ 125°C
FIGURE 1 - NOMINAL TCR
± 0.0025% Max ∆R after 1 year
± 0.005% Max ∆R after 3 years
+100
+50
∆R
0.010µV (RMS)/Volt of applied
voltage (- 40 dB)
R
0
(PPM)
0.2PPM/˚C
-50
High Frequency Operation
Rise/Decay Time
Inductance (L)
-100
-50
-25
0
+25
+50
+75
+100
+125
1.0 nanosecond @ 1KΩ
0.1µH maximum; 0.08µH typical
1.0pF maximum; 0.5pF typical
-55
Ambient Temperature (°C)
Capacitance (C)
The TCR is obtained by the process capability and
does not rely on a selection process. It does not vary
from lot to lot nor by ohmic value.
Voltage Coefficient
Thermal EMF
< 0.1ppm/V
0.1µV/°C Max; 0.05µV/°C Typical
FIGURE 2 - STANDARD IMPRINTING AND DIMENSIONS
ORDERING INFORMATION “Z” RESISTORS:
Please specify Vishay “Z” resistors as follows: (See Imprinting
in inches (millimeters)
Illustration and Table 1 for further details.)
Front View
Rear View
Example: Z201
250R00
0.01%
Optional Customer P/N
0.350 (8.9)
0.138 (3.5)
Print spec., etc. if required
Date Code
MODEL NO. RESISTANCE VALUE
TOLERANCE
VISHAY
XXXX
Z201
XXXXXX
250R00
0.01%
Resistance Value, in ohms, is expressed by a series of 6 characters,
5 of which represent significant digits while the 6th is a dual purpose
letter that designates both the multiplier and the location of the comma
or decimal point.
Resistance
Value Code
0.413
(10.5)
0.040 ±0.005
Tolerance
0.020 (0.5)
0.75 (19.1) MIN
Model Number
ø 0.025 (0.64) #22 AWG
Lead Material - Solder Coated Copper
0.150
(3.81)
RESISTANCE
RANGE
LETTER
DESIGNATOR
MULTIPLIER
FACTOR
EXAMPLE
Tolerance ± 0.008 (0.2)
100Ω to <1KΩ
1KΩ to <100KΩ
R
K
x1
x103
100R01 = 100.01Ω
15K231 =15,231Ω
Z201 Lead Spacing = 0.150*
Z201L Lead Spacing = 0.200*
VISHAY FOIL • FRANCE +33.4.93.37.28.24 FAX: +33.4.93.37.27.31
• GERMANY +49.9287.710 FAX: +49 9287.70435
• ISRAEL +972.3.557.0945 FAX: +972.3.558.9121
• ITALY + 39.2.300.11919 FAX: +39.2.300.11999
• JAPAN +81.42.729.0661 FAX: +81.42.729.3400
• SINGAPORE +65.788.6668 FAX: +65.788.0988
• SWEDEN +46.8.594.70590 FAX: +46.8.594.70581
• UK +44 191 514 8237 FAX: +44 1953 457 722
• USA +1 610 407-4800 FAX: +1 610 640-9081
Document Number 63065
Revision 09-Oct-02
www.vishay.com
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