High Precision Surface Mount Current Sensing Chip Resistor with Power
Rating to 1 W, Temperature Coefficient of Resistance of
± 2 ppm/°C and Load Life Stability of ±0.015%
VCS1625P
Vishay Foil Resistors
Document Number: 63216 For any questions, contact: foil@vishaypg.com www.vishayfoilresistors.com
Revision: 13-Jun-11 1
INTRODUCTION
Model VCS1625P is a surface mount resistor designed with
4 pads for Kelvin connection. Utilizing VFR’s (Vishay Foil
Resistors’) Bulk Metal® Foil as the resistance element, it
provides performance capabilities far greater than other
resistor technologies can supply in a product of comparable
size.
The key performance of the new VCS1625P is its high rated
power up to 1W. This small device dissipates heat almost
entirely through the pads so surface mount users are
encouraged to be generous with the board’s pads and
traces. Gold terminations are available on special order.
The four terminal device separates the current leads from the
voltage sensing leads. This configuration eliminates the
effect of the lead wire resistance from points A to B and
C to D.
VFR’s application engineering department is available to
advise and to make recommendations. For non-standard
technical requirements and special applications, please
contact foil@vishaypg.com.
I
A
R
Zin
I
D
V
=
~∞
BC
FEATURES
•Temperature coefficient of resistance (TCR):
± 2 ppm/°C typical (- 55 °C to + 125 °C,
+ 25 °C ref.) (see table 1)
•Resistance range: 0.01 Ω to 10 Ω (for higher
or lower values, please contact Application
Engineering)
•Vishay Foil resistors are not restricted to standard values,
we can supply specific “as required” values at no extra cost
or delivery (e.g. 1.234 Ω vs. 1 Ω)
•Resistance tolerance: to ± 0.1% (0.05% is also available)
•Load life stability: 0.015 % at 70 °C, 2000 h at rated power
•Electrostatic discharge (ESD) at least to 25 kV
•Short time overload < 0.005 %
•Thermal stabilization time < 1 s (nominal value achieved
within 10 ppm of steady state value)
•Power rating: to 1 W at + 70 °C (Figure 1)
•Non inductive: non capacitive design
•Rise time: 1 ns effectively no ringing
•Current rating: 5 A maximum
•Current noise: 0.010 µVRMS/V of applied voltage
(< - 40 dB)
•Voltage coefficient: < 0.1 ppm/V
•Non inductive: < 0.08 µH
•Non hot spot design
•Prototype quantities available in just 5 working days or
sooner
•For better performances, please review the VCS1625ZP
(Z-Foil) datasheet
TERMINATIONS
•Two lead (Pb)-free options are available:
gold plated or tin plated
•Tin/lead plated
FIGURE 1 - POWER DERATING CURVE
100
75
50
25
0
- 75 - 50 - 25 0 + 25 + 50 + 75 + 100 + 125 + 150 + 175
Ambient Temperature (°C)
Percent of Rated Power
+ 70 °C
- 55 °C
* Pb containing materials are not RoHS compliant, exemptions may apply