VFB2028N
Vishay Foil Resistors
Ultra High Precision Z-Foil BGA Surface Mount Resistor 4R Network,
Temperature Coefficient Tracking 0.1 ppm/°C, Load Life Ratio
Stability to ± 0.01 % (100 ppm), ESD Immunity to 25 kV
FEATURES
•
Temperature coefficient of resistance (TCR):
Absolute: ± 0.05 ppm/°C typical (0 °C to + 60 °C)
± 0.2 ppm/°C typical (- 55 °C to + 125 °C, + 25 °C
ref.)
Tracking: 0.1 ppm/°C typical
•
Power coefficient tracking “ΔR due to self heating”: 5 ppm
at rated power
•
Power rating: 0.2 W per resistor at 70 °C
•
Resistance tolerance match: 0.01 %
•
Ratio stability: 0.01 % (0.2 W at 70 °C, 2000 h)
•
Large variety of resistance ratios: 100
Ω
to 30 kΩ
•
Electrostatic discharge (ESD) up to 25 000 V
•
Short time overload
≤
0.01 % (100 ppm)
•
Non inductive, non capacitive design
•
Rise time: 1 ns effectively no ringing
•
Thermal stabilization < 1 s
•
Current noise: < - 40 dB
•
Voltage coefficient: < 0.1 ppm/V
•
Non inductive: < 0.08 µH
•
Non hot spot design
•
Terminal (solder ball) available: lead (Pb)-free
tin/lead alloy
•
Compliant to RoHS directive 2002/95/EC
•
Maximum working voltage for each element: (P x R)
1/2
•
Weight: 74 mg
•
For better performances please contact us
INTRODUCTION
Bulk Metal
®
Z-foil technology out-performs all other resistor
technologies available today for applications that require
ultra-high precision and ultra-high stability. The Z-foil
technology provides a significant reduction of the resistive
element’s sensitivity to ambient temperature variations
(TCR) and to self heating when power is applied (power
coefficient).
Model VFB2028N offers low TCR (both absolute and
tracking), low PCR tracking, excellent load life stability, tight
tolerance, excellent ratio stability, and low current noise, all
in one package. 0.05 ppm/°C absolute TCR removes errors
due to temperature gradients.
The VFB2028N ball grid array (BGA) surface mount
4-resistor network provides tight tolerance matching and
TCR tracking between 4 resistors simultaneously etched on
one piece of foil on a common substrate. The electrical
specifications of this integrated construction offers improved
performances and better real estate utilization over discrete
resistors and matched pairs.
Our application engineering department is available to
advise and make recommendations. For non-standard
technical requirements and special applications, please
contact us.
TABLE 1 - POPULAR RESISTANCE VALUES/RATIO AND TCR CHARACTERISTICS
POPULAR VALUES
AVAILABLE
(1)
(R1/R2/R3/R4)
10K/10K/10K/10K
15K/15K/15K/15K
20K/20K/20K/20K
25K/25K/25K/25K
30K/30K/30K/30K
RESISTANCE
VALUE CODE
V0008
V0355
V0300
V0311
V0356
TCR MAX. (MIL RANGE)
ABSOLUTE
TRACKING
TOLERANCE
ABSOLUTE
MATCH
(R1/R2 and R3/R2)
2.0 ppm/°C
0.5 ppm/°C
0.02 %
0.01 %
Note
(1)
For other values and ratios, please contact sales engineering department: foil@vishay.com
TABLE 2 - TYPICAL PERFORMANCE SPECIFICATIONS PER MIL-PRF-55342
TEST
Thermal shock, 5 x (- 65 °C to + 150 °C)
Low temperature operation, - 65 °C at P
nom.
45 min
Short time overload, 6.25 x P
nom.
x 5 s
High temperature exposure, 100 h at + 150 °C
Resistance to soldering heat per MIL-PRF-55342
Moisture resistance MIL-STD-202, method 106 without load
Load life (ratio stability), + 70 °C for 2000 h
* Pb containing terminations are not RoHS compliant, exemptions may apply
Document Number: 63157
Revision: 17-Mar-09
For any questions, contact:
foil@vishay.com
www.vishay.com
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ΔR
0.01 % (100 ppm)
0.01 % (100 ppm)
0.01 % (100 ppm)
0.01 % (100 ppm)
0.01 % (100 ppm)
0.05 % (500 ppm)
0.01 % (100 ppm)
ΔRatio
0.01 % (100 ppm)
0.005 % (50 ppm)
0.01 % (100 ppm)
0.01 % (100 ppm)
0.01 % (100 ppm)
0.02 % (200 ppm)
0.01 % (100 ppm)
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
www.vishay.com
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