VPR221Z Vishay, VPR221Z Datasheet

VPR221Z

Manufacturer Part Number

VPR221Z

Description

Ultra High Precision Z-foil Power Resistor In To-220 Configuration With Tcr Of ? 0.05 Ppm/?c, Pcr Of 4 Ppm/w And Load Life Stability Of ? 0.005 % 50 Ppm

Manufacturer

Vishay

Datasheet

1.VPR221Z.pdf (4 pages)

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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).

VPR221Z provides high rated power, excellent load life

stability , low Temperature Coefficient (TCR) and low Power

Coefficient (PCR) - all in one resistor. ± 0.05 ppm/°C

Absolute TCR removes error due to temperature gradients.

By taking advantage of the overall stability and reliability of

Vishay Bulk Metal

significantly reduce circuit errors and greatly improve overall

circuit performances.

Model VPR221Z is a 4 lead kelvin connected device.

Our Application Engineering Department is available to

advise and make recommendations. For non-standard

technical requirements and special applications, please

Notes

1. MIL-Range (- 55 °C to + 125 °C, + 25 °C Ref.)

•

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

Document Number: 63116

Revision: 16-Jul-07

Any value at any tolerance available within resistance range

RESISTANCE

TABLE 1 - TCR AND TOLERANCE

RANGE (Ω)

Contact Applications Engineering for other available values

0.5 to < 1

10 to 500

1 to < 10

PCR of 4 ppm/W and Load Life Stability of ± 0.005 % (50 ppm)

RESISTANCE

TOLERANCE

TO-220 Configuration with TCR of ± 0.05 ppm/°C,

TIGHTEST

± 0.05 %

± 0.02 %

± 0.01 %

Ultra High Precision Z-Foil Power Resistor in

Z-Foil resistors, designers can

± 0.2 ppm/°C ± 2.8 ppm/°C

± 0.2 ppm/°C ± 2.3 ppm/°C

± 0.2 ppm/°C ± 1.8 ppm/°C

TYPICAL TCR AND

MAX. SPREAD

For any questions, contact: foil@vishay.com

FEATURES

•

• Tolerance: to ± 0.01 %

• Power Coefficient “ΔR due to self heating”

• Rated Power: 8 W chassis mounted (MIL-PRF-39009)

• Load Life Stability: to ± 0.005 % at 25 °C for 2000 hours,

• Resistance Range: 0.5 Ω to 500 Ω

• Electrostatic Discharge (ESD) above 25 000 V

• Short Time Overload ≤ 0.001 % (10 ppm)

• Non Inductive, Non Capacitive Design

• Rise Time: 1 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

• Non Hot Spot Design

• Terminal Finishes available: Lead (Pb)-free

• Any value available within resistance range (e.g. 1K234)

• For better performances please contact us

APPLICATIONS

• Automatic Test Equipment (ATE)

• High Precision Instrumentation

• Electron Beam application

• Current Sensing applications

• Pulse applications

• Military

• Power amplifier

• Power supplies

FIGURE 1- POWER DERATING CURVE

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)

4 ppm/W typical

at 1.5 W

100

- 75

- 55 °C

- 50

- 25

Ambient Temperature (°C)

Vishay Foil Resistors

VPR221Z (Z-Foil)

Tin/Lead Alloy

100

www.vishay.com

125

150

RoHS*

COMPLIANT

Available

Pb-free

Related parts for VPR221Z

VPR221Z Summary of contents

Page 1

... Vishay Bulk Metal Z-Foil resistors, designers can significantly reduce circuit errors and greatly improve overall circuit performances. Model VPR221Z lead kelvin connected device. Our Application Engineering Department is available to advise and make recommendations. For non-standard technical requirements and special applications, please contact us ...

Page 2

... Mutual Inductance Reduction due to Change in Current Direction Note: Foil shown in black, etched spaces in white FIGURE 4 - VPR221Z DIMENSIONS in inches (millimeters) 0.200 ± 0.030 (5.08 ± 0.76) A surface mount version of this product is available see data sheets for VPR220S, VPR221S TABLE 2 - SPECIFICATIONS Power Rating °C ...

Page 3

... VPR221Z FOR EXAMPLE: ABOVE GLOBAL ORDER Y1690 420R220 TYPE: VPR221Z VALUE: 420.22 Ω ABSOLUTE TOLERANCE: ± 0.01 % TERMINATION: Lead (Pb)-free PACKAGING: Bulk Pack HISTORICAL PART NUMBER: VPR221Z T 420R22 TCR0 (will continue to be used) VPR221Z T MODEL TERMINATION T = Lead (Pb)-free none = Tin/Lead Note * For non-standard requests, please contact Application Engineering ...

Page 4

... Vishay disclaims any and all liability arising out of the use or application of any product described herein or of any information provided herein to the maximum extent permitted by law. The product specifications do not expand or otherwise modify Vishay’ ...

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