FRSTFSReriSesT(Z1SFoeeilTrcihenoslo(gZy)(1060F3o,08il05T,1e20c6h,15n0o6,2lo01g0,y25)12)
(0603, 0805, 1206, 1506, 2010, 2512)
Ultra High-Precision Foil Wraparound Surface Mount Chip Resistor
for High Temperature Applications up to +200°C,
Humidity Proof (85°C/85% RH) to 0.005%, Stability Under Load of 0.02%
FEATURES
•ꢀHumidity test: 85°C/85% RH, 1000 hrs to ∆R 0.005%,
typical
•ꢀTemperature coefficient of resistance (TCR):
2.5 ppm/°C typical (–55°C to +175°C, +25°C ref.)
Top View
•ꢀResistance range: 5 Ω to 125 kΩ (for higher and lower
values, please contact us)
•ꢀResistance tolerance: to 0.01ꢀ
•ꢀPower coefficient “∆R due to self heating”:
5 ppm at rated power
•ꢀPower rating: to 750 mW at +70°C
INTRODUCTION
to 150 mW at +175°C
•ꢀLoad life stability: 0.005% typical at ꢀ0°C (2000 h,
The FRST is based on the new generation Z1 Foil
Technology of Bulk Metal® Foil resistor elements from
VPG, which makes these resistors virtually insensitive to
destabilizing factors. Their element, based on the new Z1
Foil Technology is a solid alloy that displays the desirable
bulk properties of its parent material; thus, it is inherently
stable (less than 0.02ꢀ ∆R after 2,000 hrs, derated power
at +175°C), noise-free and withstands ESD to 25 kV or
more. The alloy is matched to the substrate and forms a
single entity with balanced temperature characteristics for
an unusually low and predictable TCR over a wide range
from –55C° to more than 175°C. Resistance patterns are
photo-etched to permit trimming of resistance values to
very tight tolerances.
rated power)
•ꢀStability under load: 0.02% at +1ꢀ5 °C (2000 h,
derated power)
•ꢀBulk Metal Foil resistors are not restricted to standard
values; we can supply specific “as required” values at
no extra cost or delivery (e.g., 1K2345 vs. 1K)
•ꢀThermal stabilization time <1 s (nominal value achieved
within 10 ppm of steady state value)
•ꢀElectrostatic discharge (ESD) at least to 25 kV
•ꢀShort time overload: 0.005ꢀ
•ꢀRise time: 1 ns effectively no ringing
•ꢀCurrent noise: 0.010 μVRMS/V of applied voltage
The FRST series has a full wraparound termination, and
was especially designed for applications up to +200°C.
(<–40 dB)
•ꢀVoltage coefficient: 0.1 ppm/V
•ꢀNon inductive: 0.08 μH
The FRST is available in any value within the
specified resistance range. The VFR application
engineering department is available to advise and
make recommendations. For non-standard technical
requirements and special applications, please contact us
using the e-mail address in the footer below.
•ꢀNon hot spot design
•ꢀTerminal finish available: lead (Pb)-free only
•ꢀMatched sets are available on request
•ꢀFor higher temperature application up to +240°C and
for better performances, contact foil@vpgsensors.com
Table 1—Tolerance and TCR vs. Resistance
Figure 1—Power Derating Curve
Value(1) (–55°C to +175°C, +25°C Ref.)
Resistance Value
(Ω)
Tolerance
(%)
Typical TCR
(ppm/°C)
125
+70°C
–55°C
100
75
50
25
0
250 to 125k
100 to <250
50 to <100
25 to <50
10 to <25
5 to <10(2)
0.01ꢀ
0.02ꢀ
0.05ꢀ
0.1ꢀ
0.25ꢀ
0.5ꢀ
2.5
Notes
–75 –50 –25
0
+25 +50 +75 +100 +125 +150 +175 +200 +225
(1)
For tighter performances and non-standard values lower
than 5 Ω and above 125 kΩ, please contact VFR application
engineering using the e-mail address in the footer below.
TCR of these low value range : 10 ppm/°C max
Ambient Temperature (°C)
(2)
4238_MC-00590
Rev 01-Nov-2019
For any questions, contact
foil@vpgsensors.com
www.vishayfoilresistors.com
1