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VHP203JTP120K50UB

更新时间： 2024-11-05 06:02:15
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威世 - VISHAY /
页数 文件大小 规格书
5页 122K
描述
Hermetically Sealed Miniature Ultra High Precision Z-Foil Technology

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VHP203 (Z-Foil)  
Vishay Foil Resistors  
Hermetically Sealed Miniature Ultra High Precision Z-Foil Technology  
Resistors with TCR of 0.05 ppm/°C, Tolerance of 0.00ꢀ ꢁ and  
Load Life Stability of 0.005 ꢁ, Unaffected by Humidity  
FEATURES  
• Temperature coefficient of resistance (TCR):  
0.05 ppm/°C (0 °C to 60 °C)  
Pb-free  
Available  
• Power coefficient “ΔR due to self heating”:  
5 ppm at rated power  
• Tolerance: to 0.001 % (10 ppm)  
RoHS*  
COMPLIANT  
• Load life stability:  
0.002 % maximum ΔR (60 °C for  
Any value available within resistance range  
2000 h at 0.1 W per chip)  
• Electrostatic discharge (ESD) > 25 000 V  
INTRODUCTION  
• Resistance range: 10 Ω to 150 kΩ (higher or lower values  
The Z-foil based oil filled, hermetically sealed VHP203  
resistor represents 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 of elements of unsealed resistors, while at the  
same time allowing the device to accept short periods of  
overload without degradation.  
of resistance available)  
• Power rating: 0.3 W at + 25 °C  
• Shelf life stability: 2 ppm for at least ꢀ0 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  
The VHP203 is also available with laboratory and metrology  
level precision and long term stability with additional inhouse  
oriented process such as: special TCR plotting, chip  
stabilitzation inhouse thermal shock and bake prior to  
sealing, combined thermal shock and power conditioning on  
finished product, thermal and power conditioning, CLT.  
• Terminal finishes available: lead (Pb)-free  
tin/lead alloy  
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  
VHP203 resistor become the most precise and stable  
resistor available.  
• Impervious to harmful environments - oil filled  
• For better performances, please contact us  
• Prototype samples available from 24 h. For more  
information, please contact foil@vishay.com  
APPLICATIONS  
• Metrology  
• Laboratory  
The value of the hermetic enclosure over the molded part is  
in long term performance.  
With accuracy of 0.001 % (10 ppm) and a resistance range  
from 10 Ω to 150 kΩ and long term shelf life of less than  
2 ppm, this device is virtually a secondary standard that can  
be carried in sets for daily or periodic calibration of factory  
measurement equipment.  
• Industrial  
• Measurement  
FIGURE 1 - TRIMMING TO VALUES  
(Conceptual Illustration)  
TABLE 1 - TCR VS. RESISTANCE VALUE  
TYPICAL TCR AND  
RESISTANCE VALUE  
MAX. SPREAD  
(- 55 °C to + ꢀ25 °C, + 25 °C ref.)  
(ppm/°C)ꢀ)  
Current Path  
Before Trimming  
Interloop Capacitance  
Reduction in Series  
(Ω)  
Current Path  
100 to < 150K  
50 to < 100  
10 to < 50  
0.2  
0.2  
0.2  
2
3
4
After Trimming  
Mutual Inductance  
Trimming Process  
Removes this Material  
from Shorting Strip Area  
Changing Current Path  
and Increasing  
Reduction due  
to Opposing  
Current in  
Adjacent Lines  
Resistance  
Note  
1. For lower TCR and for selected TCR tracking, please contact us  
Note: Foil shown in black, etched spaces in white  
* Pb containing terminations are not RoHS compliant, exemptions may apply  
Document Number: 63146  
Revision: 06-May-08  
For any questions, contact: foil@vishay.com  
www.vishay.com  
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