Y160882R4000F0L

VCS232Z (Z-Foil) Vishay Foil Resistors Ultra High Precision Z-Foil Power Current Sensing Resistor with Absolute TCR of ± 0.05 ppm/°C, ESD Immunity up to 25 kV and Tolerance of ± 0.02 %, Power Rating up to 2 W FEATURES PR O DU CT INTRODUCTION IM PR O VE D Today, designers of analog circuits are demanding discrete power current sense resistors that approach the ideal in performance … stable, high speed, high accuracy components that will operate with assured, predictable reliability for years in a variety of environments. Foil is meeting those demands with the VCS232Z of unequalled performances. These four fundamental factors determine how “ideal” a precision power current sense resistor will be: 1. Initial resistance value or how closely the absolute resistance value can be achieved 2. How precisely the value of individual resistors can be controlled 3. How precisely the end of life tolerance is maintained under a wide range of operating conditions and stress factors (temperature, humidity, load, etc.) 4. Fast response without ringing and fast thermal stabilization - and the ability of the resistor to react to rapid switching without adversely affecting the circuit function. Until the development of Foil resistors, precise control of all four factors was virtually impossible. Foil VCS232Z resistor containing the latest version of Z-foil achieves maximum stability, a near zero temperature coefficient and the ability to remove errors due to temperature gradients. This superior performance is built-in for every unit and does not rely on culling or other artificial means for uniform excellence. TABLE 1 - TOLERANCE AND TCR RESISTANCE RANGE () TIGHTEST RESISTANCE TOLERANCE TYPICAL TCR AND MAX. SPREAD (ppm/°C) (1) 0.25 to < 10 ± 0.05 % ± 0.2 ± 2.8 10 to 500 ± 0.02 % ± 0.2 ± 1.8 Notes (1) - 55 °C to + 125 °C, + 25 °C ref. • Contact applications engineering for other available values FIGURE 1 - POWER DERATING CURVE - 55 °C + 25 °C + 100 Percent of Rated Power  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.)  Power coefficient “R due to self heating”: 4 ppm/W typical  Power rating at + 25 °C: 2 W (free air)  Tolerance: to ± 0.02 %  Load life stability: to ± 0.005 %, 25 °C for 2000 h at rated power  Maximum current: 3 A  Resistance range: 0.25 to 500   Foil resistors are not restricted to standard values; specific “as required” values can be supplied at no extra cost or delivery (e.g 100.234  vs. 100)  Electrostatic discharge (ESD) up to 25 000 V  Short time overload 0.005 %  Non inductive, non capacitive design  Rise time: 1 ns effectively no ringing  Thermal stabilization time < 1 s  Current noise