VISHAY Y007345R4540Q0L

VRM
Vishay Foil Resistors
Bulk Metal® Foil Technology Industrial Miniature Precision
Resistor with TCR of ± 4 ppm/°C and Tolerance to ± 0.01 %
FEATURES
• Temperature Coefficient of Resistance:
± 4 ppm/°C (0 °C to + 60 °C);
± 8 ppm/°C (- 55 °C to + 125 °C, 25 °C Ref.)
• Resistance Range: 5 Ω to 50 kΩ
Pb-free
Available
RoHS*
COMPLIANT
• Tolerance: to ± 0.01 %
• Power Rating: 0.25 W at + 70 °C; 0.125 W at + 125 °C
The VRM style is a miniaturized version of the now famous
S102C. It is made with a Bulk Metal® Foil element so it
retains all of the inherent performance of foil resistors. It does
not, however, have the value range, power rating, TCR or
lead spacing of the S102C. It is a size for size replacement
for certain wirewounds and finds application in situations
where size constraints dictate the use of this miniature
precision resistor.
Our Application Engineering Department is available to
advise and to make recommendations. For non-standard
technical requirements and special applications, please
contact us.
• Load Life Stability: ± 0.05 % Maximum ΔR at + 70 °C at
Rated Power for 2000 hours
• Non Inductive: < 0.08 µH
• Thermal EMF: < 0.1 µV/°C
• Long Term Stability: ± 0.0025 % (25 ppm) per year under
low power and room temperature conditions
• Voltage Coefficient: < 0.1 ppm/V
• Maximum Working Voltage: 250 V
• Terminal Finishes Available: Lead (Pb)-free
Tin/Lead Alloy
• Any value available within resistance range (e.g. 1K234)
• Prototype samples available from 48 hours. For more
information, please contact [email protected]
• For better performances, please see S-Series datasheet
FIGURE 1 - IMPRINTING AND DIMENSIONS
Front View
Date Code
07
10
Year Week
L
Model
VISHAY
XXXX
VRM
Rear View
Resistance
Value Code
W
100R01
0.01 %
H
Tolerance
ST
FIGURE 2 - POWER DERATING CURVE
Percent of Rated Power
Any value at any tolerance available with resistance range
+ 70 °C
+ 75
+ 50
+ 25
0
- 55 - 25
Lead Material
#22 AWG (0.025 Dia)
Solder Coated Copper
DIMENSIONS
INCHES
mm
L:
0.250 ± 0.010
6.35 ± 0.25
H:
0.250 ± 0.010
6.35 ± 0.25
W:
0.125 ± 0.010
3.18 ± 0.25
ST:
0.020 ± 0.010
0.51 ± 0.25
LL:
0.750 Minimum
19.05 Minimum
LS:
0.125 ± 0.005
3.18 ± 0.13
0
+ 25 + 50
+ 75 + 100 + 125 + 150 + 175
Ambient Temperature (°C)
LL
LS
+ 155 °C
+ 100
TABLE 1 - RESISTANCE VALUES VS
TOLERANCE
5 Ω to 50 Ω
50 Ω to 50 kΩ
± 0.1 %
± 0.25 %
± 0.5 %
± 1.0 %
± 0.01 %
± 0.02 %
± 0.05 %
± 0.1 %
± 0.25 %
± 0.5 %
± 1.0 %
* Pb containing terminations are not RoHS compliant, exemptions may apply
Document Number: 63010
Revision: 12-Jul-07
For any questions, contact: foil[email protected]
www.vishay.com
1
VRM
Vishay Foil Resistors Bulk Metal® Foil Technology Industrial Miniature Precision
Resistor with TCR of ± 4 ppm/°C and Tolerance to ± 0.01 %
FIGURE 3 - TEMPERATURE COEFFICIENT
FIGURE 4 - TRIMMING TO VALUES
(Conceptual Illustration)
+ 400
+ 200
+ 100
+ 4 ppm/°C
ΔR
R
0
(ppm) - 100
- 4 ppm/°C
0
+ 25
Current Path
After Trimming
Trimming Process
Removes this Material
from Shorting Strip Area
Changing Current Path
and Increasing
Resistance
Mutual Inductance
Reduction due
to Change in
Current Direction
- 140
- 200
- 400
Current Path
Before Trimming
Interloop Capacitance
Reduction in Series
+ 140
+ 60
Temperature, °C
Note: Foil shown in black, etched spaces in white
TABLE 2 - GLOBAL PART NUMBER INFORMATION
NEW GLOBAL PART NUMBER: Y007345K4540Q9L (preferred part number format)
DENOTES PRECISION
VALUE
AER*
Y
R=Ω
K = kΩ
0 = Standard
9 = Lead (Pb)-free
1 - 999 = Custom
Y
0
0
7
3
4
5
K
4
5
4
0
Q
L
9
PRODUCT CODE
RESISTANCE TOLERANCE
PACKAGING
0073 = VRM
T = ± 0.01 %
Q = ± 0.02 %
A = ± 0.05 %
B = ± 0.1 %
C = ± 0.25 %
D = ± 0.5 %
F = ± 1.0 %
L = Bulk Pack
FOR EXAMPLE: ABOVE GLOBAL ORDER Y0073 45K4540 Q 9 L:
TYPE: VRM
VALUE: 45.454 kΩ
ABSOLUTE TOLERANCE: ± 0.02 %
TERMINATION: Lead (Pb)-free
PACKAGING: Bulk Pack
HISTORICAL PART NUMBER EXAMPLE: VRMT 45K454 Q B (will continue to be used)
VRM
T
45K454
Q
B
MODEL
TERMINATION
OHMIC VALUE
RESISTANCE
TOLERANCE
PACKAGING
VRM
T = Lead (Pb)-free
None = Tin/Lead alloy
45.454 kΩ
T = ± 0.01 %
Q = ± 0.02 %
A = ± 0.05 %
B = ± 0.1 %
C = ± 0.25 %
D = ± 0.5 %
F = ± 1.0 %
B = Bulk Pack
Note
* For non-standard requests, please contact Application Engineering.
www.vishay.com
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For any questions, contact: [email protected]
Document Number: 63010
Revision: 12-Jul-07
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Vishay
Disclaimer
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
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
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Document Number: 91000
Revision: 18-Jul-08
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