Bulk Metal® Foil Technology Precision Foil Power Resistors
in TO-220 Configuration with TCR of ± 2 ppm/°C,
Tolerance of to ± 0.01 % and Power Rating to 8 W
VPR220, VPR221
Vishay Foil Resistors
Document Number: 63012 For any questions, contact: foil@vishaypg.com www.foilresistors.com
Revision: 23-Mar-10 1
Any value at any tolerance within resistance range
Models VPR220 AND VPR221, made from Vishay Bulk
Metal® Foil, offer low TCR, high stability, tight tolerance and
fast response time in a small, molded resistor. Model
VPR220 is a 2 lead device. Model VPR221 is a 4 lead Kelvin
connected device. The 4 leaded version is highly
recommended for precision applications requiring ohmic
values of 100R or less.
weight = 1 g maximum
Notes
(1) Lower or high values available upon request
(2) - 55 °C to + 125 °C, + 25 °C ref.
weight = 1.2 g maximum
Notes
(1) Lower or high values available upon request
(2) - 55 °C to + 125 °C, + 25 °C Ref.
FEATURES
•
Temperature coefficient of resistance (TCR):
± 2 ppm/°C typical (- 55 °C to + 125 °C,
+ 25 °C ref.)
•Tolerance: to ± 0.01 % (see tables 1 and 2)
•Electrostatic discharge (ESD): above 25 000
V
•Load life stability: ± 0.005 % (25 °C, 2000 h at rated power)
•Resistance range: 0.5 Ω to 10 kΩ
•Power rating: 8 W chassis mounted (per MIL-PRF-39009)
•Non-inductive, non-capacitive design
•Rise time: 1 ns without ringing
•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 or tin/lead alloy
•Any value available within resistance range (e.g. 1K234)
•Prototype samples available from 48 h. For more
information, please contact foil@vishaypg.com
•
For better performances, please see VPR220Z and
VPR221Z datasheets
•
Compliant to RoHS directive 2002/95/EC
* Pb containing terminations are not RoHS compliant, exemptions may apply
TABLE 1 - VPR220
RESISTANCE
RANGE (Ω) (1) TIGHTEST
TOLERANCE
TYPICAL
TCR (2) MAXIMUM
TCR (2)
50 to 10K ± 0.01 % ± 2 ± 5 ppm/°C
25 to < 50 ± 0.02 % ± 2 ± 7 ppm/°C
10 to < 25 ± 0.05 % ± 2 ± 10 ppm/°C
5 to < 10 ± 0.1 % ± 2 ± 13 ppm/°C
TABLE 2 - VPR221
RESISTANCE
RANGE (Ω) (1) TIGHTEST
TOLERANCE
TYPICAL
TCR (2) MAXIMUM
TCR (2)
10 to < 500 ± 0.01 % ± 2 ppm/°C ± 5 ppm/°C
1 to < 10 ± 0.02 % ± 2 ppm/°C ± 5 ppm/°C
0.5 to < 1 ± 0.05 % ± 2 ppm/°C ± 5 ppm/°C
FIGURE 1 - POWER DERATING CURVE
I
1
E
1
E
2
I
2
R
V
I
I
Ambient Temperature (°C)
+ 150+ 125+ 100+ 75+ 50+ 250- 25- 50
+ 100
+ 75
+ 50
+ 25
0
Percent of Rated Power
- 55 °C
VPR220, VPR221
Vishay Foil Resistors
www.foilresistors.com For any questions, contact: foil@vishaypg.com Document Number: 63012
2Revision: 23-Mar-10
Notes
(1) Whichever is lower
(2) Heat sink chassis dimensions and requirements per
MIL-R-39009/1B:
(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
Surface mount versions of these products are available. See
datasheets for VPR220S, VPR 221S.
FIGURE 2 - TYPICAL TCR CURVE
TABLE 3 - SPECIFICATIONS
Load Life Stability at 2000 h
± 0.05 % max
Δ
R under full rated
power at + 25 °C
Power Rating at + 25 °C
8 W or 3 A
(1)
on heat sink
(2)
1.5 W or 3 A
(1)
in free air
Further derating not necessary
Current Noise
< 0.010 µV (rms)/V of applied
voltage (- 40 dB)
High Frequency Operation
Rise time 1 ns without ringing
Inductance
(3)
(L) 0.1 µH maximum: 0.03 µH typical
Capacitance (C) 1.0 pF maximum: 0.5 pF typical
Voltage Coefficient
(4)
< 0.1 ppm/V
Operating Temperature
Range
- 55 °C to + 150 °C
Maximum Working Voltage
300 V. Not to exceed power rating
Thermal EMF
(5)
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
- 50 - 25 0 + 20 + 50 + 75 + 100 + 125
- 55
+ 150
+ 100
+ 50
0
- 50
- 100
- 150
- 200
Δ
R
R
(ppm)
Ambient Temperature (°C)
± 2 ppm/°C (+ 25 °C reference)
FIGURE 3 - TRIMMING TO VALUES
(conceptual illustration)
FIGURE 4 - VPR220 DIMENSIONS
in inches (millimeters)
FIGURE 5 - VPR221 DIMENSIONS
in inches (millimeters)
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 Area
Changing Current Path
and Increasing
Resistance
Current Path
After Trimming
0.400 ± 0.010
(10.16 ± 0.25)
VISHAY
VPR220
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)
E
2
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)
0.030 ± 0.002
(0.76 ± 0.05)
0.100 ± 0.005
(2.54 ± 0.13)
0.400 ± 0.010
(10.16 ± 0.25)
VISHAY
VPR221
1R0 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)
0.115 ± 0.005
(2.92 ± 0.13)
0.050 ± 0.005
(1.27 ± 0.13)
0.200 ± 0.030
(5.08 ± 0.76)
E
1
I
2
I
1
VPR220, VPR221
Vishay Foil Resistors
Document Number: 63012 For any questions, contact: foil@vishaypg.com www.foilresistors.com
Revision: 23-Mar-10 3
Note
(1) For non-standard requests, please contact application engineering
TABLE 4 - GLOBAL PART NUMBER INFORMATION (1)
NEW GLOBAL PART NUMBER: Y09265R00000Q9L (preferred part number format)
DENOTES PRECISION VALUE CHARACTERISTICS
YR = Ω
K = kΩ
0 = standard
9 = lead (Pb)-free
1 to 999 = custom
PRODUCT CODE RESISTANCE TOLERANCE PACKAGING
0925 = VPR220
0926 = VPR221
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 Y0926 5R00000 Q 9 L:
TYPE: VPR221
VALUE: 5.0 Ω
ABSOLUTE TOLERANCE: ± 0.02 %
TERMINATION: lead (Pb)-free
PACKAGING: bulk
HISTORICAL PART NUMBER: VPR221T 5R0000 Q B (will continue to be used)
VPR221 T 5R0000 Q B
MODEL TERMINATION OHMIC VALUE RESISTANCE
TOLERANCE PA C K A G I N G
VPR220
VPR221
T = lead (Pb)-free
None = tin/lead alloy
5.0 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
9265 000RY0 Q90 L0
Document Number: 63999 www.vishaypg.com
Revision: 22-Feb-10 1
Disclaimer
Legal Disclaimer Notice
Vishay Precision Group
1
All product specifications and data are subject to change without notice.
Vishay Precision Group, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf
(collectively, “Vishay Precision Group”), disclaim any and all liability for any errors, inaccuracies or incompleteness
contained herein or in any other disclosure relating to any product.
Vishay Precision Group disclaims any and all liability arising out of the use or application of any product described
herein or of any information provided herein to the maximum extent permitted by law. The product specifications do
not expand or otherwise modify Vishay Precision Group’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
document or by any conduct of Vishay Precision Group.
The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications unless
otherwise expressly indicated. Customers using or selling Vishay Precision Group products not expressly indicated
for use in such applications do so entirely at their own risk and agree to fully indemnify Vishay Precision Group for
any damages arising or resulting from such use or sale. Please contact authorized Vishay Precision Group
personnel to obtain written terms and conditions regarding products designed for such applications.
Product names and markings noted herein may be trademarks of their respective owners.
