VHP100, VHP101, VHP102, VHP103
Ultra-High Precision Hermetically Sealed Bulk Metal® Foil Resistor
Ultra-High Precision Hermetical y Sealed Bulk Metal® Foil Resistor
with Zero TCR, no Humidity Effect and 0.005% Tolerance within a
Unique Construction, Minimizing the Effects of Stress Factors
FEATURES
• Essentially zero TCR
• Absolute resistance change (window):
VHP100 <60 ppm (–55°C to +125°C)
VHP101 <10 ppm (+15°C to +45°C)
• Tolerance: to 0.005% (50 ppm) –
[(available to 0.001% (10 ppm)]
• No humidity effect: hermetically sealed against
moisture
• Load life stability: 50 ppm typical for 2,000 h,
70°C at 0.3 W
• Resistance range: 100 Ω to 150 kΩ (higher or lower
The VHP10x represents an essentially Zero Temperature
values available on request)
Coefficient Resistor type of resistor. This oil filled
• Bulk Metal® Foil resistors are not restricted to standard
hermetically sealed device makes unique use of foil on
values; specific “as required” values can be supplied
ceramic in such a way that self cancelling responses
at no extra cost or delivery (e.g., 1K2345 vs. 1K)
to temperature are produced by combining equal and
• Electrostatic discharge (ESD) up to 25,000 V
• Non inductive, non capacitive design
• Rise time: 1 ns effectively no ringing
• Thermal stabilization <1 s
• Current noise: 0.010 µVRMS/V of applied voltage
(<–40 dB)
• Thermal EMF: 0.05 µV/°C typical
• Voltage coefficient: <0.1 ppm/V
• Inductance: <0.08 µH
opposite effects. This product is sold only in hermetic
packages because applications requiring this level of
temperature stability require humidity stability as well.
The value of the hermetic enclosure over the molded part
is in the long term performance. The hermetic sealing
prevents the ingress of moisture and oxygen, while the oil
acts as a thermal conductor.
TCR WINDOW DEFINITION
The TCR of the VHP10x is so small that an additional
definition – window, has been introduced. The window
definition requires that the absolute resistance remain
within the stated window over the temperature range
specified. The resistance of the VHP10x resistor
stays within a 60 ppm window over the entire military
temperature range of –55°C to +125°C (figures 1 and 3).
• Non hot spot design
• Hermeticity: 10–7 atmospheric cc/s max.
• Terminal finish: lead (Pb)-free; tin/lead alloy
• Oil filled as standard, air filled available upon request
• Load-life stability can be considerably improved
through in-house oriented tests
A window of 10 ppm is available for the laboratory
instrument range (+15°C to +45°C);
see figure 4 – type VHP101.
INTRODUCTION
The VHP10x type represents a metrology breakthrough.
A new construction concept combined with special
treatments make this resistor the first choice in the most
demanding instrumentation and laboratory applications.
The ability of the VHP10x to minimize the changes in
resistance value when the resistor is subjected to load
variations and thermal stresses, ensure the ultra high
performances for the tight metrology specifications.
The total error budget of 2 ppm drift and the high speed
recovery represent an improvement of almost an order of
magnitude on the earlier model.
TCR TRACKING
Tracking of the VHP10x resistor is also vastly superior
to conventional precision resistors. Typical 5 ppm/°C
precision resistors have a worst-case tracking of 10 ppm/°C
(wirewounds, thick film, thin film) or a difference between
resistors of 1000 ppm (10 ppm/°C x 100°C) when
temperature changes from +25°C to +125°C. For a
3 ppm/°C tracking, as with S102C, the difference will be
300 ppm (3 ppm/°C×100°C) for the same temperature
range. The VHP10x resistors will track to 60 ppm from
–55°C to +125°C, a five-fold improvement over the
S102C resistor.
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.
4085-EN
Rev 09-Mar-2021
For any questions, contact
foil@vpgsensors.com
www.vishayfoilresistors.com
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