SMR1DZ/SMR3DZ (Z-Foil)
Ultra High Precision Z-Foil Molded Surface Mount Resistor
with TCR down to ±±0. ꢀꢀp/ꢁCꢂ PCR of ±ꢃ ꢀꢀp at Rated Powerꢂ
Flexible Terpinationsꢂ and Load-Life Stability of ±±0±±ꢃ ꢄ (ꢃ± ꢀꢀp)
FEATURES AND BENEFITS
• Temperature coefficient of resistance (TCR):
0.2 ppmꢀ/C typical (ꢁ55/C to ꢂ125/Cꢃ ꢂ25/C ref.)
• Tolerance: to 0.01ꢄ
• Power coefficient of resistance (PCR) “∆R due to self
heating": 5 ppm at rated power
• Flexible Terminations ensure minimal stress
transference from the PCB due to a difference in
thermal coefficient of expansions (TCE)
Any value at any tolerance
available within resistance range
R2
• Electrostatic discharge (ESD): at least to 25 kV
• Load-life stability: 0.005ꢄ (ꢅ0/Cꢃ 2000 h)
• Resistance range: 5 Ω to 80 kΩ (for higher and lower
valuesꢃ please contact us)
R1
Vin
-
Vout
+
SMRxDZ
• Power rating: to 600 mW at ꢂꢅ0/C
• Non-inductiveꢃ non-capacitive design
• Current noise: ꢁ40 dB
• Voltage coefficient: <0.1 ppmꢀV
• Non-inductive: <0.08
• Non hot spot design
• Terminal finishes available: lead (Pb)-freeꢃ tinꢀlead alloy
• Matched sets with TCR tacking are available upon
request
• For higher performancesꢃ please contact us
APPLICATIONS
• Precision amplifiers
• High precision
instrumentation
• Medical
• Automatic test
equipment (ATE)
• Industrial
• Audio (high end stereo
equipment)
• EB application
• Militaryꢃ airborne and
space
• Pulse application
• Measurement
instrumentation
• Any value available within Resistance Range (e.g.ꢃ
1K234)
• For prototype samplesꢃ please contact
foil@vpgsensors.com
INTRODUCTION
The SMRxDZ is an ultra high precision molded surface
mountable resistor offering all the elements of precision;
including low TCRꢃ tight toleranceꢃ long term stabilityꢃ
low noiseꢃ low thermal EMFꢃ and non-measurable voltage
coefficient. One of the important parameters influencing
stability is the Temperature Coefficient of Resistance
(TCR). Although the TCR of foil resistors is considered
Table 1—Tolerance and TCR vs. Resistance
Figure 1—Power Derating Curve
Value(ꢁ55/C to ꢂ125/Cꢃ ꢂ25/C Ref.)
–55 °C
+ 70 °C
200
175
150
125
100
75
Standard
Tolerance(1)
(ꢄ)
Tyꢀical TCR and
Max0 Sꢀread(1)
(ꢀꢀp/ꢁC)
Value
(Ω)
ꢃ± Ω to 8± kΩ
.± Ω to <ꢃ± Ω
1± Ω to <.± Ω
ꢃ Ω to <1±Ω
0.01ꢄ
0.02ꢄ
0.05ꢄ
0.1ꢄ
0.2 1.8
0.2 2.8
0.2 4.8
0.2 6.8
Note
(1)
For values <5 Ω and tighter performanceꢃ contact us.
50
Note
25
*
This datasheet provides information about parts that are
0
RoHS-compliant andꢀor parts that are non-RoHS-compliant.
For exampleꢃ parts with lead (Pb) terminations are not RoHS
compliant. Please see the informationꢀtables in this datasheet
for details.
–75
–25
+25
+75
+125
+175
Ambient Temperature (°C)
4151-EN
Rev 13-Aug-2020
For any questions, contact
foil@vpgsensors.com
www.vishayfoilresistors.com
1