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Y1757120K500X

Description
Hermetically Sealed Ultra High Precision Z-Foil Technology Resistors with TCR of ± 0.2 ppm/°C, Tolerance of ± 0.001 % and
File Size142KB,6 Pages
ManufacturerVishay
Websitehttp://www.vishay.com
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Y1757120K500X Overview

Hermetically Sealed Ultra High Precision Z-Foil Technology Resistors with TCR of ± 0.2 ppm/°C, Tolerance of ± 0.001 % and

HZ Series (Z-Foil)
Vishay Foil Resistors
Hermetically Sealed Ultra High Precision Z-Foil Technology
Resistors with TCR of ± 0.2 ppm/°C, Tolerance of ± 0.001 % and
Load Life Stability of ± 0.005 %
FEATURES
Temperature coefficient of resistance (TCR):
± 0.2 ppm/°C typical (- 55 °C to + 125 °C,
+ 25 °C ref.)
Power coefficient “ΔR due to self heating”:
5 ppm at rated power
Tolerance:
to ± 0.001 %
Any value available within resistance range
Load life stability ± 0.002 % maximum
ΔR
(60 °C for
2000 h at 0.1 W per chip)
Electrostatic discharge (ESD) > 25 000 V
Resistance range: 5
Ω
to 1.1 MΩ (higher or lower values of
resistance available)
Power rating: 0.3 to 2.5 W at + 25 °C (depending on model
- see table 2)
Shelf life stability: 2 ppm for at least 10 years
Non inductive, non capacitive design
Non hot spot design
Rise time: 1.0 ns without ringing
Current noise: < - 40 dB
Thermal EMF: 0.05 µV/°C typical
Voltage coefficient: < 0.1 ppm/V
Non inductive: < 0.08 µH
Terminal finishes available:
lead (Pb)-free
tin/lead alloy
INTRODUCTION
The Z-foil based oil filled, hermetically sealed HZ-series
resistors represent an industry breakthrough. The hermetic
sealing eliminates the ingress of moisture and oxygen, while
the oil acts as a thermal conductor, thus eliminating long term
degradation elements of unsealed resistors, while at the
same time allowing the device to accept short periods of
overload without degradation.
The Z-foil technology provides a significant reduction of the
resistive components sensitivity to ambient temperature
variations (TCR) and applied power changes (PCR). When
combined with the hermetic sealing and oil filling, the
H-series resistors become
the most precise and stable
resistors available.
With accuracies of ± 0.001 % and a resistance range from
5
Ω
to 1.1 MΩ and long term shelf life of less than 2 ppm,
these devices are virtually secondary standards that can be
carried in sets for daily or periodic calibration of factory
measurement equipment.
The VHA series is also available with laboratory and
metrology level precision and long term stability with
additional in-house oriented process such as: special
TCR plotting, mounted chip stabilization, thermal shock
and bake prior to sealing, combined thermal shock and
power conditioning on finished product, thermal and
power conditioning, component linearity test.
Impervious to harmful environments - oil filled
For better performances, please contact us
FIGURE 1 - TRIMMING TO VALUES
(Conceptual Illustration)
TABLE 1 - TOLERANCE AND TCR VS.
RESISTANCE VALUE
RESISTANCE VALUE
(Ω)
100 to < 1M1
50 to < 100
5 to < 50
TYPICAL TCR AND
MAX. SPREAD
(- 55 °C to + 125 °C, + 25 °C ref.)
(ppm/°C)
1)
± 0.2 ± 2
± 0.2 ± 3
± 0.2 ± 4
Interloop Capacitance
Reduction in Series
Current Path
Before Trimming
Current Path
After Trimming
Trimming Process
Removes this Material
from Shorting Strip Area
Changing Current Path
and Increasing
Resistance
Mutual Inductance
Reduction due
to Opposing
Current in
Adjacent Lines
Note:
Foil shown in
black,
etched spaces in
white
Note
1. For lower TCR and for selected TCR tracking, please contact us
Document Number: 63120
Revision: 17-Jun-08
For any questions, contact: foil@vishay.com
www.vishay.com
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