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4
VFCP Series (Z-Foil) (0805, 1206, 1506, 2010, 2512)
For any questions, contact
foil@vpgsensors.com
Document No.: 63106
Revision: 19-Oct-2015
relevant to designers of circuits used in alternative
energy and industrial applications, where environmental
pollution is a constant concern. Analog circuitry in
these applications almost always operates under severe
environmental, thermal, and mechanical conditions,
and must withstand frequent and extended service by
professionals and novices alike. The picture is further
complicated by tough regulatory restrictions and high
consumer expectations. VFR received a steady stream
of customer inquiries, which led to more focus on anti-
sulfurated resistor research and development. As a result
we have qualified our surface-mount foil chip resistors
as “antisulfurated resistors.” These resistors are capable
of exposure to sulfurous environments without damage.
Beyond alternative energy, applications include industrial
control systems, sensors, RTDs, electric instrumentation,
weather and communication base stations. These
resistors are also suited for electronic appliances used in
high concentrations of sulfur.
POWER COEFFICIENT OF RESISTANCE
(PCR)
The TCR of a resistor for a given temperature range is
established by measuring the resistance at two different
ambient temperatures: at room temperature and in a
cooling chamber or oven. The ratio of relative resistance
change and temperature difference gives the slope of
DR/R = f (T) curve. This slope is usually expressed in
parts per million per degree Centigrade (ppm/°C). In
these conditions, a uniform temperature is achieved
in the measured resistance. In practice, however, the
temperature rise of the resistor is also partially due to
self-heating as a result of the power it is dissipating. As
stipulated by the Joule effect, when current flows through
a resistance, there will be an associated generation of
of a heat flow and of a temperature gradient. Therefore,
the TCR alone does not provide the actual resistance
change for precision resistor. Hence, another metric is
introduced to incorporate this inherent characteristic—the
Power Coefficient of Resistance (PCR). PCR is expressed
in parts per million per Watt or in ppm at rated power. In
the case of Z-based Bulk Metal
®
Foil, the PCR is 5 ppm
typical at rated power or 4 ppm per Watt typical for power
resistors.
TABLE 6—GLOBAL PART NUMBER INFORMATION
(1)
NEW GLOBAL PA RT NUMBER: Y163010K0000T9W (preferred part number format)
SCITSIRETCARAHCEULAVNOISICERP SETONED
RY = Ω
K = kΩ
0 = tin/lead
9 = lead (Pb)-free
1 to 999 = custom
GNIGAKCAPECNARELOT ECNATSISEREDOC TCUDORP
1629 = VFCP0805
1630 = VFCP1206
1631 = VFCP1506
1632 = VFCP2010
1633 = VFCP2512
T = ±0.01%
Q = ±0.02%
A = ±0.05%
B = ±0.10%
C = ±0.25%
D = ±0.50%
F = ±1.00%
R = tape and reel
W = waffle pack
FOR EXAMPLE: ABOVE GLOBAL ORDER Y1630 10K0000 T 9 W:
TYPE: VFCP1206
VALUE: 10.0 kΩ
ABSOLUTE TOLERANCE: ±0.01%
TERMINATION: lead (Pb)-free
PACKAGING: waffle pack
HISTORICAL PART NUMBER:VFCP1206 10K000 TCR0.2TSW(will continue to be used)
VFCP120610K000TCR0.2T
MODELOHMIC VALUETCR
RESISTANCE
TOLERANCE
TERMINAT IONPACKAGING
VFCP0805
VFCP1206
VFCP1506
VFCP2010
VFCP2512
10.0 kΩ Characteristic T = ±0.01%
Q = ±0.02%
A = ±0.05%
B = ±0.10%
C = ±0.25%
D = ±0.50%
F = ±1.00%
S = lead (Pb)-free
B = tin/lead
T = tape and reel
W = waffle pack
6301 K000Y1 T90 W0
Note
(1) For non-standard requests, please contact Application Engineering
VFCP Series (Z-Foil)
(0805, 1206, 1506, 2010, 2512)
