Y16072R00000T9W【PDF 1/3 页】RES 2.0 OHM .5W .01% FOIL SMD

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VCS1625Z (Z-Foil)

Vishay Foil Resistors

Ultra High Precision Z-Foil Surface Mount Current

Sensing Chip Resistor with TCR of ± 0.05 ppm/°C and

Power Coefficient of 5 ppm at Rated Power

FEATURES

? Temperature coefficient of resistance (TCR):

± 0.05 ppm/°C typical (0 °C to + 60 °C)

± 0.2 ppm/°C typical (- 55 °C to + 125 °C,

+ 25 °C ref.) (see table 1)

? Resistance range: 0.3 ? to 10 ?? (for higher or

lower values please contact us)

INTRODUCTION

The Z-foil technology provides a significant reduction of the

resistive component’s sensitivity to ambient temperature

variations (TCR) and applied power changes (PCR).

Designers can now guarantee a high degree of stability and

accuracy in fixed-resistor applications using solutions

based on Vishay‘s revolutionary Z-foil technology.

Model VCS1625Z is a surface mount chip resistor designed

with 4 pads for Kelvin connection. Utilizing Vishay’s Bulk

Metal ? Z-foil as the resistance element, it provides

performance capabilities far greater than other resistor

technologies can supply in a product of comparable size.

0.05 ppm/°C absolute TCR removes errors due to

temperature gradients .

This small device dissipates heat almost entirely through the

pads so surface mount users are encouraged to be generous

with the board’s pads and traces.

Our application engineering department is available to

advise and to make recommendations. For non-standard

technical requirements and special applications, please

FIGURE 1 - POWER DERATING CURVE

? Foil resistors are not restricted to standard values, we can

supply specific “as required” values at no extra cost or

delivery (e.g. 1.234 ? vs. 1 ? )

? Tolerance: to ± 0.2 %

? Power coefficient “ ? R due to self heating”: 5 ppm at rated

power

? Load life stability: 0.02 % at 70 °C, 2000 h at rated power

? Electrostatic discharge (ESD) up to 25 000 V

? Short time overload < 0.005 %

? Power rating: 0.5 W at + 70 °C (figure 1)

? Non inductive, non capacitive design

? Rise time: 1 ns effectively no ringing

? Current rating: 5 A maximum

? Current noise: < - 40 dB

? Voltage coefficient: < 0.1 ppm/V

? Non inductive: < 0.08 μH

? Non hot spot design

? Prototype samples available from 72 h. For more

information, please contact foil@vishaypg.com

? For better performances please contact us

TERMINATIONS

? Two lead (Pb)-free options are available:

gold plated or tin plated

? Tin/lead plated

100

- 55 °C

+ 70 °C

APPLICATIONS

? Military

? Medical

? Automatic test equipment (ATE)

? Airborne (in heads-up display

systems)

I 2

? High precision instrumentation

- 75

- 50

- 25 0 + 25 + 50 + 75 + 100 + 125 + 150 + 175

Ambient Temperature (°C)

? Electron beam recording equipment

? Electron microscopes

? Current sensing applications

? Forced balance electronic scales

? Applications that require superior frequency stability

TABLE 1 - SPECIFICATIONS (2)

MODEL

NUMBER

VCS1625Z

RESISTANCE

RANGE

> 2.0 ? to 10 ?

0.3 ? to 2.0 ?

RESISTANCE

TOLERANCE

± 0.2 %, ± 0.5 %; ± 1.0 %

± 0.5 %; ± 1.0 %

TYPICAL TCR and MAX. SPREAD

(- 55 °C to + 125 °C, + 25 °C)

± 0.2 ± 2.8 ppm/°C

POWER RATING

at + 70 °C (1)

0.5 W on FR4 PCB

MAXIMUM

CURRENT (1)

Notes

(1) Whichever is lower

(2) Tighter performances are available. Please contact application engineering foil@vishaypg.com

* Pb containing materials are not RoHS compliant, exemptions may apply

Document Number: 63094

Revision: 23-Mar-10

For any questions, contact: foil@vishaypg.com

www.foilresistors.com

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