Datasheet > VHP203JTP120K50TB

VHP203JTP120K50TB

更新时间： 2024-11-24 06:02:15

品牌	Logo	应用领域
威世 - VISHAY		/
页数	文件大小	规格书
5页	122K
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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

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

12 3 4 5

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