VHP100
Key Features
- Essentially Zero TCR: almost zero resistance/ Pb-free temperature effect Available
- Absolute Resistance Change (window): RoHS* VHP100 < 60 ppm (- 55 °C to + 125 °C) COMPLIANT VHP101 < 10 ppm (+ 15 °C to + 45 °C)
- Tolerance: to ± 0.005 %
- No Humidity Effect: Hermetically Sealed1) against Moisture
- Load Life Stability2): ± 20 ppm typical for 2000 hours, 70 °C at 0.3 Watts
- Shelf Life Stability: ± 2 ppm after at least 10 years
- Resistance Range: 100 Ω to 150 kΩ (other values available on request) * * * * * * * *
- Electrostatic Discharge (ESD) above 25 000 Volts Non Inductive, Non Capacitive Design Current Noise: < - 40 dB Thermal EMF: 0.05 µV/°C Voltage Coefficient: < 0.1 ppm/V Inductance: < 0.08 µH Non Hot Spot Design Hermeticity: 10-7 atmospheric cc/seconds max Terminal Finishes available: Lead (Pb)-free Tin/Lead Alloy Any value available within resistance range Vishay has achieved an essentially zero temperature coefficient resistor in the VHP100 family. This oil filled hermetically sealed device makes unique use of foil on ceramic in such a way that self cancelling responses to temperature are produced by combining equal and 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.
