VFCD1505 (Z-Foil)
High Precision Bulk Metal® Foil Surface Mount Voltage Divider
High Precision Bulk Metal® Foil Surface Mount Voltage Divider
TCR Tracking of <0.5 ppm/°C, Tolerance Match of 0.01%
and Stability of 0.005% (50 ppm)
FEATURES
• Temperature coefficient of resistance (TCR):
Absolute: (table 1)
0.05 ppm/°C (typical 0°C to +60°C)
0.2 ppm/°C (typical –55°C to +125°C, +25°C ref.)
Tracking: (table 1)
Bottom
View
0.1 ppm/°C typical
• Resistance range: 1K to 10K
• Power coefficient tracking: ”ΔR due to self heating”
5 ppm at rated power
• Short time overload: 0.005%
• Tolerance: absolute and resistance ratio: to 0.01%
• Load life stability (0.1 W at 70°C, 2000 h)
Absolute: 0.01%
Ratio: 0.005%
INTRODUCTION
Bulk Metal® Z-Foil (BMZF) technology out-performs all
other resistor technologies available today for applications
that require ultra high precision and ultra high stability.
The new Z-Foil technology provides a significant
reduction of the resistive element’s sensitivity to changes
of temperature due to ambient temperature variations
(TCR) and to self heating when power is applied
(power coefficient).
• Electrostatic discharge (ESD) up to 25 000 V
• Power rating at 70°C: entire package: 0.1 W, divided
between the two resistors proportionally to their value
• Non-inductive, non-capacitive design
• Thermal EMF: 0.05 µV/°C typical
• Current noise: <–40 dB
• Rise time: 1 ns effectively no ringing
• Non inductive: <0.08 µH
• Voltage coefficient: <0.1 ppm/V
• Non hot spot design
• Terminal finish: lead (Pb)-free or tin/lead alloy
• For better performances please contact us
• Prototypes quantities available in just 5 working days
or sooner. For more information, please contact:
foil@vishaypg.com
Model VFCD1505 offers low TCR (both absolute
and tracking), excellent load life stability, tight
tolerance,excellent ratio stability, low thermal EMF and
low current noise, all in one package. 0.05 ppm/°C
absolute TCR removes errors due to temperature
gradients.
The VFCD1505 surface mount divider provides tight
tolerance matching and TCR tracking between 2 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.
Figure 1 – Power Derating Curve
APPLICATIONS
R2
+70°C
–55°C
• Instrumentation amplifiers
• Bridge networks
• Differential amplifiers
• Ratio arms in bridge circuits
• Medical and test equipment
• Military
100
75
50
25
0
R1
Vin
-
Vout
+
VFCD1505
• Airborne etc
–75 –50 –25
0
+25 +50 +75 +100 +125 +150 +175
Ambient Temperature (°C)
Figure 2 – Schematic
Note
* This datasheet provides information about parts that are RoHS-
compliant and/or parts that are non-RoHS-compliant. For example,
parts with lead (Pb) terminations are not RoHS compliant.
Please see the information/tables in this datasheet for details.
R1
R2
4145-EN
Rev 22-Mar-2021
For any questions, contact
foil@vpgsensors.com
www.vishayfoilresistors.com
1