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Ultra Precision Hermetically Sealed
Ultra Precision Foil Resistor Networks & Voltage Dividers
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H-series Resistor
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FEATURES
H-series (vha Series & Vhp 202) Resistor
H-Series (VHA Series & VHP 202)
• Temperature coefficient of resistance (TCR):
± 2 ppm/°C typical (- 55 °C to + 125 °C, + 25 °C
ref.). For ultra high performances
(instrumentation and metrology) please refer to
the last page
• Resistance range: 5 Ω to 1.84 MΩ (higher or
lower values of resistance available)
• Vishay Foil resistors are not restricted to standard values;
specific “as required” values can be supplied at no extra
cost or delivery (e.g. 1K2345 vs. 1K)
• Power rating: 0.3 W to 2.5 W at + 25 °C (depending on
model - see table 2)
• Tolerance: to ± 0.001 % (10 ppm)
• Load life stability to ± 0.002 % (20 ppm) at 25 °C, 2000 h
at rated power
• Load life stability can be considerably improved
through in-house stabilization
• Shelf life stability: ± 2 ppm for at least 6 years
(unaffected by humidity)
• Electrostatic discharge (ESD) up to 25 000 V
• Rise time: 1 ns effectively no ringing
• Thermal stabilization time < 1 s (nominal value achieved
within 10 ppm of steady state value)
• Current noise: 0.010 µVRMS/V of applied voltage (< - 40 dB)
• Thermal EMF: 0.05 µV/°C typical
• Voltage coefficient: < 0.1 ppm/V
• Non-inductive: < 0.08 µH
• Non-inductive, non-capacitive design
• Non hot spot design
• Terminal finish available: lead (Pb)-free or tin/lead alloy
• Impervious to harmful environments - oil-filled
• Compliant to RoHS directive 2002/95/EC
• Prototype quantities available in just 5 working days
or sooner.
• For better performances (values, TCR, tolerance, stability),
please see the HZ series
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Molded Voltage Dividers (300144Z & 300145Z (Z-Foil)
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Feature
· Temperature coefficient of resistance (TCR),
absolute: ± 0.05 ppm/°C typical (0 °C to + 60 °C)
± 0.2 ppm/°C typical (- 55 °C to + 125 °C,
+ 25 °C ref.)
TCR tracking: 0.1 ppm/°C typical
· Tolerance: absolute and matching to 0.005 % (50 ppm)
· Power coefficient tracking “R due to self heating”: 5 ppm
at rated power
· Power rating: 0.2 W at 70 °C, for the entire resistive
element R1 and R2, divided proportionally between the two values
· Load life ratio stability: < 0.005 % (50 ppm) 0.2 W at 70 °C for 2000 h
· Maximum working voltage: 200 V
· Resistance range: 100R to 20K per resisitve element
· Foil resistors are not restricted to standard values/ratios;
Specific “as requested” values/ratios can be supplied at no
extra cost or delivery (e.g. 1K2345 vs. 1K)
· Electrostatic discharge (ESD) up to 25 000 V
· Current noise: 0.010 µVRMS/V of applied voltage (< - 40 dB)
· Thermal EMF: 0.05 µV/°C typical
· Voltage coefficient: < 0.1 ppm/V
· Non inductive: < 0.08 µH
· Non hot spot design
· Thermal stabilization time < 1 s (nominal value achieved
within 10 ppm of steady state value)
· Compliant to RoHS directive 2002/95/EC
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VHS102, VH102K And VHS555 Resistors
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FEATURES
• Temperature coefficient of resistance (TCR):
- 55 °C to + 125 °C, + 25 °C ref.:
VH102K: ± 1 ppm/°C typical
VHS102: ± 2 ppm/°C typical
VHS555: ± 5 ppm/°C maximum
• Tolerance: to ± 0.005 %
• Resistance range: 1 Ω to 150 kΩ (higher or lower
resistance values are available
• Load life stability: 0.005 % (70 °C for 2000 h at rated power)
• Electrostatic discharge (ESD) > 25 000 V
• Power rating: 0.6 W at + 70 °C; 0.3 W at + 125 °C
• 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
• Termal finishes available: lead (Pb)-free
tin/lead alloy
• Impervious to harmful environments - oil filled
• For better performance, please see VH102Z datasheet
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VHP3, VHP4, VPR247
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FEATURES
• Temperature coefficient of resistance TCR:
± 2 ppm/°C typical (- 55 °C to + 125 °C,
+ 25 °C ref.) (see tables 1 and 2)
• Tolerance: to ± 0.01 % (see tables 1 and 2)
• Power rating (heat-sinked): 10 W
• Load life stability: ± 0.01 % at 25 °C, 2000 h at rated power
• Resistance range: 0.05 Ω to 80 kΩ
• Electrostatic discharge (ESD) above 25 000 V
• Non inductive, non capacitive 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
• Non hot spot design
• Terminal finishes available:
VHP-3 and VHP-4: lead (Pb)-free
tin/lead alloy
VPR247: gold plated
• Any value available within resistance range (e.g. 1K234)
• Prototype samples available from 48 h. For more
information,
• For better performances, please contact Application
Engineering
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