Document Number: 63064 For any questions, contact: foil@vishay.com www.vishay.com
Revision: 22-Sep-08 1
VPR220Z (Z-Foil)
Vishay Foil Resistors
Ultra High Precision Z-Foil Power Resistor in
TO-220 Configuration with TCR of ± 0.05 ppm/°C,
Tolerance to ± 0.01 % and Power Rating to 8 W
Vishay Foil Resistors manufacture any resistance value
within the given resistance range (e.g. 10 Ω or
10.1234 Ω) without influencing cost or lead time
Model VPR220Z, made from Vishay Bulk Metal® Z-foil, offers
very low TCR, high stability, tight tolerance, low PCR and fast
response time in a small molded resistor.
The Z-foil technology provides a significant reduction of the
resistive components sensitivity to ambient temperature
variations and applied power changes. Designers now can
guarantee a high degree of stability and accuracy in fixed
resistor applications using solutions based on Vishay’s
revolutionary Z-foil technology.
Our application engineering department is available to
advise and make recommendations. For non-standard
technical requirements and special applications, please
contact us.
FEATURES
•
Temperature coefficient of resistance (TCR):
± 0.05 ppm/°C typical (0 °C to + 60 °C)
± 0.2 ppm/°C typical (- 55 °C to + 125 °C,
+ 25 °C ref.)
•Tolerance: to ± 0.01 %
•Power coefficient of resistance (PCR) “ΔR due to self
heating”: 4 ppm/W typical
•Electrostatic discharge (ESD) above 25 000 V
•Load life stability: ± 0.005 % (25 °C, 2000 h at rated power)
•Resistance range: 5 Ω to 10 kΩ (Any value available within
resistance range e.g. 1K2345)
•Power rating: 8 W chassis mounted (per MIL-PRF-39009)
•Thermal stabilization < 1 s
•Rise time: 1 ns without ringing
•Optimized for military and space applications according to
EEE-INST-002 screening and MIL-PRF 39009
•Non inductive, non capacitive design
•Current noise: < - 40 dB
•Voltage coefficient: < 0.1 ppm/V
•Non inductive: < 0.08 µH
•Non hot spot design
•Thermal EMF: 0.05 µV/°C typical
•Terminal finishes available: lead (Pb)-free, tin/lead alloy
•Also available in a surface mount version, the VPR220SZ
•Prototype samples available from 72 h. For more
information, please contact foil@vishay.com
•For higher performances please contact us
Weight = 1 g maximum
* Pb containing terminations are not RoHS compliant, exemptions may apply
TABLE 1 - VPR220Z
(- 55 °C to + 125 °C, + 25 °C Ref.)
RESISTANCE
RANGE (Ω)
TIGHTEST
RESISTANCE
TOLERANCE
TYPICAL TCR AND
MAX. SPREAD
(ppm/°C)
50 to 10K ± 0.01 %
± 0.2 ± 2.3
25 to < 50 ± 0.02 %
10 to < 25 ± 0.05 %
5 to < 10 ± 0.1 %
FIGURE 1 - POWER DERATING CURVE
Ambient Temperature (°C)
+ 150+ 125+ 100+ 75+ 50+ 250- 25- 50
+ 100
+ 75
+ 50
+ 25
0
Percent of Rated Power
- 55 °C
VPR220Z (Z-Foil)
Vishay Foil Resistors Ultra High Precision Z-Foil Power Resistor in
TO-220 Configuration with TCR of ± 0.05 ppm/°C,
Tolerance to ± 0.01 % and Power Rating to 8 W
www.vishay.com For any questions, contact: foil@vishay.com Document Number: 63064
2Revision: 22-Sep-08
Notes
1. Whichever is lower.
2. Heat sink chassis dimensions and requirements per
MIL-PRF-39009:
3. Inductance (L) due mainly to the leads.
4. The resolution limit of existing test equipment (within the
measurement capability of the equipment, or “essentially zero”).
5. µV/°C relates to EMF due to lead temperature difference.
TABLE 2 - SPECIFICATIONS
Load Life Stability
at 2000 h
± 0.05 % max. ΔR under full
rated power at + 25 °C
Power Rating at + 25 °C
8 W or 3 A1) on heat sink2)
1.5 Wor 3 A1) in free air
Further derating not
necessary.
Current Noise < 0.010 µV (rms)/V of applied
voltage (- 40 dB)
High Frequency Operation
Rise time
Inductance3) (L)
Capacitance (C)
1 ns
0.1 µH maximum: 0.03 µH typical
1.0 pF maximum: 0.5 pF typical
Voltage Coefficient4) < 0.1 ppm/V
Operating Temperature
Range - 55 °C to + 150 °C
Maximum Working
Voltage
300 V. Not to exceed power
rating.
Thermal EMF5) 0.15 µV/°C maximum
(lead effect)
DIMENSION INCHES mm
L 6.00 152.4
W 4.00 101.6
H 2.00 50.8
T 0.04 1.0
FIGURE 2 - TRIMMING TO VALUES
(conceptual illustration)
Mutual Inductance
Reduction due
to Change in
Current Direction
Current Path
Before Trimming
Note: Foil shown in black, etched spaces in white
Interloop Capacitance
Reduction in Series
Trimming Process
Removes this Material
from Shorting Strip Are
a
Changing Current Path
and Increasing
Resistance
Current Path
After Trimming
FIGURE 3 - TYPICAL TCR CURVE Z-FOIL
+ 500
+ 200
+ 100
0
- 100
- 200
- 300
- 500
- 55 - 25 + 25 + 60 + 75 + 100 + 125
Ambient Temperature (°C)
ΔR
R
(ppm)
0
0.05 ppm/°C
- 0.1 ppm/°C 0.1 ppm/°C
0.14 ppm/°C
0.2 ppm/°C
- 0.16 ppm/°C
- 400
+ 300
+ 400
FIGURE 4 - VPR220Z TESTS:
5R, 10 UNITS
+ 500
+ 400
+ 300
+ 200
+ 100
0
- 100
- 200
- 300
- 400
- 500
ΔR/R (ppm)
Test Type
(All tests performed on same resistors in succession)
Initial RC Low
Te m p .
Operation
Short Time
Overload
Post
Drying
Moisture
Resistance
Insulation
Resistance
Initial RC Terminal
Strength
FIGURE 5 - VPR220Z LOAD LIFE, 10 kΩ
PNOM., 25 °C, 20 UNITS
+ 500
+ 400
+ 300
+ 200
+ 100
0
- 100
- 200
- 300
- 400
- 500
ΔR/R (ppm)
Time (h)
0 500 1000 1500 2000
VPR220Z (Z-Foil)
Ultra High Precision Z-Foil Power Resistor in
TO-220 Configuration with TCR of ± 0.05 ppm/°C,
Tolerance to ± 0.01 % and Power Rating to 8 W
Vishay Foil Resistors
Document Number: 63064 For any questions, contact: foil@vishay.com www.vishay.com
Revision: 22-Sep-08 3
Note
* For non-standard requests, please contact application engineering.
FIGURE 6 - VPR220Z FORMING DIMENSIONS
in inches (millimeters)
0.400 ± 0.010
(10.16 ± 0.25)
VISHAY
VPR220Z
1K0 1 %
0101
0.245 ± 0.010
(6.22 ± 0.25)
0.141 ± 0.005 Dia.
(3.58± 0.13)
0.540 ± 0.040
(13.72 ± 1.02) 0.030 ± 0.002
(0.76 ± 0.05)
0.200 ± 0.005
(5.08± 0.13)
0.115 ± 0.005
(2.92 ± 0.13)
0.050 ± 0.005
(1.27 ± 0.13)
0.150 ± 0.008
(3.81 ± 0.2)
0.615 Max.
(15.62)
0.078± 0.005
(1.98±0.13)
0.015 ± 0.002
(0.38± 0.05)
0.050 ± 0.005
(1.27 ± 0.13)
0.200 ± 0.030
(5.08± 0.76)
TABLE 3 - GLOBAL PART NUMBER INFORMATION
NEW GLOBAL PART NUMBER: Y1622350R650Q9L (preferred part number format)
DENOTES PRECISION VALUE AER*
YR = Ω
K = kΩ
0 = standard
9 = lead (Pb)-free
1 - 999 = custom
PRODUCT CODE RESISTANCE TOLERANCE PACKAGING
1622 = VPR220Z T= ± 0.01 %
Q= ± 0.02 %
A= ± 0.05 %
B= ± 0.1 %
C= ± 0.25 %
D= ± 0.5 %
F= ± 1.0 %
G= ± 2.0 %
J= ± 5.0 %
L = bulk pack
FOR EXAMPLE: ABOVE GLOBAL ORDER Y1622 350R650 Q 9 L:
TYPE: VPR220Z
VALUE: 350.65 Ω
ABSOLUTE TOLERANCE: ± 0.02 %
TERMINATION: lead (Pb)-free
PACKAGING: bulk pack
HISTORICAL PART NUMBER: VPR220ZT 350R65 Q B (will continue to be used)
VPR220Z T 350R65 Q B
MODEL TERMINATION OHMIC VALUE RESISTANCE
TOLERANCE PA C K A G I N G
VPR220Z T = lead (Pb)-free
None = tin/lead alloy
350.65 ΩT= ± 0.01 %
Q= ± 0.02 %
A= ± 0.05 %
B= ± 0.1 %
C= ± 0.25 %
D= ± 0.5 %
F= ± 1.0 %
G= ± 2.0 %
J= ± 5.0 %
B = bulk pack
6223 0R65Y1 Q95 L0
Document Number: 91000 www.vishay.com
Revision: 18-Jul-08 1
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All product specifications and data are subject to change without notice.
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(collectively, “Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained herein
or in any other disclosure relating to any product.
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information provided herein to the maximum extent permitted by law. The product specifications do not expand or
otherwise modify Vishay’s terms and conditions of purchase, including but not limited to the warranty expressed
therein, which apply to these products.
No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this
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The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications unless
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