Document Number: 63136 For any questions, contact: foil@vishay.com www.vishay.com
Revision: 12-Nov-08 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
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.
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 1 - TCR, RESISTANCE RANGE, TOLERANCE, RATED POWER
TCR + 25 °C to + 125 °C RESISTANCE RANGE RESISTANCE TOLERANCE RATED POWER at 70 °C
± 25 ppm/°C 100 mΩ to 1 Ω± 1 %, ± 2 %, ± 5 % (F, G, J) 2 W in free air, on heat sink 12 W (1)
± 50 ppm/°C 1 mΩ to < 100 mΩ± 1 %, ± 2 %, ± 5 % (F, G, J) 2 W in free air, on heat sink 12 W (1)
TABLE 2 - CONFIGURATION
mm inch
L 19.0 ± 0.5 0.748 ± 0.020
W 22.0 ± 0.5 0.866 ± 0.020
W14.0 ± 0.2 0.157 ± 0.008
W24.0 ± 0.2 0.157 ± 0.008
T 4.0 ± 0.2 0.157 ± 0.008
T11.5 ± 0.2 0.059 ± 0.008
F 5.08 ± 0.5 0.200 ± 0.020
l 15.0 ± 1.0 0.591 ± 0.039
l13.0 ± 0.2 0.118 ± 0.008
t 0.8 ± 0.1 0.031 ± 0.004
a13.0 ± 0.2 0.118 ± 0.008
a22.0 ± 0.2 0.079 ± 0.008
b11.4 ± 0.1 0.055 ± 0.004
b21.0 ± 0.1 0.039 ± 0.004
D Ø 3.4 ± 0.2 0.134 ± 0.008
L
W1
T
Cu
T1
t
D
W2
W
l
l1
a1
b1
FFF
a2
b2
Vishay
PFR
0R0249 1.0 %
0835
I1E1E2I2
R
V
I
I
PFR
Vishay Foil Resistors High Precision Power Resistor with TCR of 0 ± 25 ppm/°C,
Tolerance to ± 1 % and Power Rating to 12 W
www.vishay.com For any questions, contact: foil@vishay.com Document Number: 63136
2Revision: 12-Nov-08
FIGURE 1 - DERATING CURVE
+ 100
+ 75
+ 50
+ 25
0
- 25- 55 0 + 25 + 50 + 75 + 100 + 125 + 150 + 175
Ambient Temperature (°C)
Percent of Rated Power
+ 155 °C+ 70 °C
FIGURE 2 - FREQUENCY
200
150
100
50
0
0.1 1000
110 100
Frequency (kHz)
R(AC)/R(DC)
1 mΩ5 mΩ10 mΩ
50 mΩ
100 mΩ
1 Ω
FIGURE 4 - TEMPERATURE OF RESISTOR SURFACE
0
10
20
30
40
50
60
70
80
Temperature (°C)
Applied Power (W)
0246810 12 14 16 18
Element Surface (23.8 °C/W)
In Free Air On Aluminum Chassis
Element Surface (4.2 °C/W)
TABLE 3 - PERFORMANCE
PARAMETERS TEST CONDITION MAXIMUM TYPICAL
Test Group I
Max. rated operating temperature 70 °C
Working temperature range - 55 °C to + 155 °C
Maximum working current 100 A
Test Group II
Power conditioning 25 °C, rated power, 96 h ± 0.05 ± 0.01
Test Group III
Low temperature storage - 55 °C, no load, 24 h ± 0.05 ± 0.01
Dielectric withstanding voltage Atmospheric pressure, AC 500 V, 1 min ± 0.05 ± 0.01
Insulation resistance DC 100 V, 1 min over 10 000 MΩ
Low temperature operation - 55 °C, rated power ± 0.05 ± 0.01
Overload Rated power x 5, 5 s ± 0.05 ± 0.01
Moisture resitance + 65 °C to - 10 °C, 90 % to 98 % RH, rated power, 240 h ± 0.1 ± 0.05
Terminal strength 2.27 kg (5 lbs), 10 s ± 0.05 ± 0.01
Test Group IV
Shock 100 G, 6 ms, sawtooth wave, X, Y, Z, each 3 shocks ± 0.05 ± 0.01
Vibration, high frequency 20 G, 10 Hz to 2000 Hz to 10 Hz, 20 min, X, Y, Z, each 4 h ± 0.05 ± 0.01
Test Group V
Life 70 °C, rated power, 1.5 h, “ON” 0.5 h, “OFF” 2000 h ± 0.2 ± 0.1
Test Group VI
High temperature exposure 155 °C, no load, 2000 h ± 0.2 ± 0.1
Test Group VII
Solderability 245 °C, 5 s over 95 % coverage
Test Group VIII
Thermal resistance to base plate between element surface and base plate 1.5 °C/W
Test Group IX
Thermal EMF 0 °C to 100 °C 0.1 µV/°C
Test Group X
Inductance 1 mΩunder 20 nH 7 nH
Document Number: 63136 For any questions, contact: foil@vishay.com www.vishay.com
Revision: 12-Nov-08 3
PFR
High Precision Power Resistor with TCR of 0 ± 25 ppm/°C,
Tolerance to ± 1 % and Power Rating to 12 W
Vishay Foil Resistors
Note
* For non-standard requests, please contact application engineering.
TABLE 4 - GLOBAL PART NUMBER INFORMATION
NEW GLOBAL PART NUMBER: Y09270R01000F9L (preferred part number format)
DENOTES PRECISION VALUE AER*
YR = Ω0 = tin/lead
9 = lead (Pb)-free
1 to 999 = custom
PRODUCT CODE RESISTANCE TOLERANCE PACKAGING
0927 = PFR F= ± 1.0 %
G= ± 2.0 %
J= ± 5.0 %
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
9270 010RY0 090 LF
Document Number: 91000 www.vishay.com
Revision: 18-Jul-08 1
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