PFR
Vishay Foil Resistors
High Precision Power Resistor with TCR of 0 ± 25 ppm/°C,
Tolerance to ± 1 % and Power Rating to 12 W
FEATURES
•
Temperature coefficient of resistance (TCR):
0 ± 25 ppm/°C (+ 25 °C to + 125 °C)
•
Tolerance: ± 1 %, ± 2 %, ± 5 %
•
Load life stability: ± 0.1 % (+ 70 °C, 2000 h at rated power)
•
Resistance range: 1 mΩ to 1
Ω
•
Vishay Foil Resistors are not restricted to standard values,
we can supply specific “as required” values at no extra cost
or delivery (e.g. 0R5123 vs. 0R5)
•
Power rating: 2 W in free air, 12 W on heat sink
•
Non inductive, non capacitive design
•
Thermal finish available: lead (Pb)-free, tin/lead alloy
•
Rise time: 1 ns effectively no ringing
•
Thermal stabilization < 1 s
APPLICATIONS
•
Current sensing in precise power supply etc.
TABLE 1 - TCR, RESISTANCE RANGE, TOLERANCE, RATED POWER
TCR + 25 °C to + 125 °C
± 25 ppm/°C
± 50 ppm/°C
RESISTANCE RANGE
100 mΩ to 1
Ω
1 mΩ to < 100 mΩ
RESISTANCE TOLERANCE
± 1 %, ± 2 %, ± 5 % (F, G, J)
± 1 %, ± 2 %, ± 5 % (F, G, J)
RATED POWER at 70 °C
2 W in free air, on heat sink 12 W
(1)
2 W in free air, on heat sink 12 W
(1)
Notes
(1)
152.4 (L) x 101.6 (W) x 50.8 (H) x 1.0 (T)
• For heat sinking an aluminum chassis in 152.4 (L) x 101.6 (W) x 50.8 (H) x 1.0 (T) mm shall be used
TABLE 2 - CONFIGURATION
mm
L
W
1
D
W
inch
0.748 ± 0.020
0.866 ± 0.020
0.157 ± 0.008
0.157 ± 0.008
0.157 ± 0.008
0.059 ± 0.008
0.200 ± 0.020
0.591 ± 0.039
0.118 ± 0.008
0.031 ± 0.004
0.118 ± 0.008
0.079 ± 0.008
0.055 ± 0.004
0.039 ± 0.004
0.134 ± 0.008
L
T
19.0 ± 0.5
22.0 ± 0.5
4.0 ± 0.2
4.0 ± 0.2
4.0 ± 0.2
1.5 ± 0.2
5.08 ± 0.5
15.0 ± 1.0
3.0 ± 0.2
0.8 ± 0.1
3.0 ± 0.2
2.0 ± 0.2
1.4 ± 0.1
1.0 ± 0.1
3.4 ± 0.2
W
W
1
W
2
Cu
W
2
Vishay
PFR
0R0249 1.0
%
0835
l
1
T
T
1
I
I
1
E
1
V
R
E
2
I
2
I
F
l
l
1
t
a
1
a
2
b
1
b
2
DØ
l
a
1
b
1
F
F
a
2
b
2
F
T
1
t
Document Number: 63136
Revision: 12-Nov-08
For any questions, contact: foil@vishay.com
www.vishay.com
1
PFR
Vishay Foil Resistors
High Precision Power Resistor with TCR of 0 ± 25 ppm/°C,
Tolerance to ± 1 % and Power Rating to 12 W
FIGURE 1 - DERATING CURVE
Percent of Rated Power
+ 70 °C
+ 100
FIGURE 2 - FREQUENCY
+ 155 °C
200
1 mΩ
5 mΩ 10 mΩ
50 mΩ
R(AC)/R(DC)
+ 75
+ 50
+ 25
0
- 55 - 25
150
100
50
0
0.1
100 mΩ
1
Ω
0
+ 25 + 50
+ 75 + 100 + 125 + 150 + 175
Ambient Temperature (°C)
1
10
100
1000
Frequency (kHz)
FIGURE 4 - TEMPERATURE OF RESISTOR SURFACE
80
70
60
50
40
30
20
10
0
0
Temperature (°C)
In Free Air
Element Surface (23.8 °C/W)
On Aluminum Chassis
Element Surface (4.2 °C/W)
2
4
6
8
10
12
14
16
18
Applied Power (W)
TABLE 3 - PERFORMANCE
PARAMETERS
Test Group I
Max. rated operating temperature
Working temperature range
Maximum working current
Test Group II
Power conditioning
Test Group III
Low temperature storage
Dielectric withstanding voltage
Insulation resistance
Low temperature operation
Overload
Moisture resitance
Terminal strength
Test Group IV
Shock
Vibration, high frequency
Test Group V
Life
Test Group VI
High temperature exposure
Test Group VII
Solderability
Test Group VIII
Thermal resistance to base plate
Test Group IX
Thermal EMF
Test Group X
Inductance
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TEST CONDITION
MAXIMUM
TYPICAL
70 °C
- 55 °C to + 155 °C
100 A
25 °C, rated power, 96 h
- 55 °C, no load, 24 h
Atmospheric pressure, AC 500 V, 1 min
DC 100 V, 1 min
- 55 °C, rated power
Rated power x 5, 5 s
+ 65 °C to - 10 °C, 90 % to 98 % RH, rated power, 240 h
2.27 kg (5 lbs), 10 s
100 G, 6 ms, sawtooth wave, X, Y, Z, each 3 shocks
20 G, 10 Hz to 2000 Hz to 10 Hz, 20 min, X, Y, Z, each 4 h
70 °C, rated power, 1.5 h, “ON” 0.5 h, “OFF” 2000 h
155 °C, no load, 2000 h
245 °C, 5 s
between element surface and base plate
0 °C to 100 °C
1 mΩ
For any questions, contact: foil@vishay.com
under 20 nH
± 0.05
± 0.05
± 0.05
± 0.01
± 0.01
± 0.01
over 10 000 MΩ
± 0.05
± 0.01
± 0.05
± 0.01
± 0.1
± 0.05
± 0.05
± 0.01
± 0.05
± 0.05
± 0.2
± 0.2
± 0.01
± 0.01
± 0.1
± 0.1
over 95 % coverage
1.5 °C/W
0.1 µV/°C
7 nH
Document Number: 63136
Revision: 12-Nov-08
PFR
High Precision Power Resistor with TCR of 0 ± 25 ppm/°C,
Vishay Foil Resistors
Tolerance to ± 1 % and Power Rating to 12 W
TABLE 4 - GLOBAL PART NUMBER INFORMATION
NEW GLOBAL PART NUMBER: Y09270R01000F9L (preferred part number format)
DENOTES PRECISION
Y
VALUE
R
=
Ω
AER*
0
= tin/lead
9
= lead (Pb)-free
1 to 999
= custom
Y
0
9
2
7
0
R
0
1
0
0
0
F
9
L
PRODUCT CODE
0927
= PFR
RESISTANCE TOLERANCE
F
= ± 1.0 %
G
= ± 2.0 %
J
= ± 5.0 %
PACKAGING
L
= bulk pack
FOR EXAMPLE: ABOVE GLOBAL ORDER Y0927 0R01000 F 9 L:
TYPE: PFR
VALUES: 0.01
Ω
ABSOLUTE TOLERANCE: ± 1.0 %
TERMINATION: lead (Pb)-free
PACKAGING: bulk pack
Note
* For non-standard requests, please contact application engineering.
Document Number: 63136
Revision: 12-Nov-08
For any questions, contact: foil@vishay.com
www.vishay.com
3
Legal Disclaimer Notice
Vishay
Disclaimer
All product specifications and data are subject to change without notice.
Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf
(collectively, “Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained herein
or in any other disclosure relating to any product.
Vishay 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’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.
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 products not expressly indicated for use in such
applications do so entirely at their own risk and agree to fully indemnify Vishay for any damages arising or resulting
from such use or sale. Please contact authorized Vishay 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.
Document Number: 91000
Revision: 18-Jul-08
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1
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