Ultra High Precision Z-Foil Power Resistor in TO-220 ...

1 Ultra High Precision Z-Foil Power Resistor inTO-220 Configuration with TCR of ppm/ C,PCR of 4 ppm/W and Load Life Stability of % (50 ppm)VPR221Z ( Z-Foil )Vishay Foil Resistors Document Number: 63116 For any questions, contact: 25-Mar-101 IMPROVED PRODUCTAny value at any tolerance available within resistance rangeINTRODUCTIONThe Z-Foil Technology provides a significant reduction of theresistive component s sensitivity to ambient temperaturevariations (TCR) and applied Power changes (PCR).VPR221Z provides high rated Power , excellent load lifestability , low Temperature Coefficient (TCR) and low PowerCoefficient (PCR) - all in one Resistor . ppm/ CAbsolute TCR removes error due to temperature taking advantage of the overall stability and reliability ofBulk Metal Z-Foil resistors, designers can significantlyreduce circuit errors and greatly improve overall VPR221Z is a 4 lead kelvin connected Application Engineering Department is available toadvise and make recommendations.

2 For non-standardtechnical requirements and special applications, pleasecontact MIL-Range (- 55 C to + 125 C, + 25 C Ref.) Contact Applications Engineering for other available valuesFEATURES Temperature coefficient of resistance (TCR): ppm/ C typical (0 C to + 60 C) ppm/ C typical (- 55 C to + 125 C,+ 25 C ref.) (see table 1) Tolerance: to % Power coefficient R due to self heating 4 ppm/W typical Rated Power : 8 W chassis mounted (MIL-PRF-39009) Load life stability: to % at 25 C for 2000 hours,at W Resistance range: to 500 Electrostatic discharge (ESD) above 25 000 V Short time overload % (10 ppm) Non-inductive, non-capacitive design Rise time: 1 ns without ringing Current noise < - 40 dB Thermal EMF: V/ C typical Voltage coefficient < ppm/V Non inductive: < H Non hot spot design Terminal finishes available:lead (Pb)-freetin/lead alloy Any value available within resistance range ( 1K234) For better performances please contact usAPPLICATIONS Automatic test equipment (ATE) High Precision instrumentation Electron beam application Current sensing applications Pulse applications Military Power amplifier Power supplies* Pb containing terminations are not RoHS compliant, exemptions may applyTABLE 1 - TCR AND TOLERANCERESISTANCE RANGE ( )TIGHTEST RESISTANCE TOLERANCETYPICAL TCR ANDMAX.

3 SPREAD1) to < 1 % ppm/ C ppm/ C1 to < 10 % ppm/ C ppm/ C10 to 500 % ppm/ C ppm/ CFIGURE 1- Power DERATING CURVEI1E1E2I2 RVIIA mbient Temperature ( C)100755025 0r e w o P d e t a R f o t n e c r e P - 75150- 252575125- 50050100- 55 CVPR221Z ( Z-Foil )Vishay Foil Resistors any questions, contact: Number: 631162 Revision: 25-Mar-10 IMPROVED PRODUCTA surface mount version of this product is available see data sheets for VPR220S, VPR221 SNotes1. Maximum is % standard for all specifications Whichever is Heat sink chassis dimensions are requirements perMIL-R-39009/1B:4. Inductance (L) mainly due to the The resolution limit of existing test requirement (within themeasurement capability of the equipment, essentially zero ).6. V/ C relates to EMF due to lead temperature 2 - TRIMMING TO VALUES (Conceptual Illustration)Mutual InductanceReduction dueto Change inCurrent DirectionCurrent PathBefore TrimmingNote: Foil shown in black, etched spaces in whiteInterloop CapacitanceReduction in SeriesTrimming ProcessRemoves this Materialfrom Shorting Strip AreaChanging Current Pathand IncreasingResistanceCurrent PathAfter TrimmingFIGURE 3 - TYPICAL TCR CURVE Z-Foil (for more details see table 1)+ 500 + 200 + 100 0 - 100 - 200 - 300 - 500 - 55- 25+ 25+ 60 + 75+ 100 + 125 Ambient Temperature ( C) R R (ppm) 0 ppm/ C - ppm/ ppm/ C ppm/ C ppm/ C - ppm/ C - 400 + 300 + 400 FIGURE 4 - VPR221Z DIMENSIONS in inches (millimeters)TABLE 2 - SPECIFICATIONSP ower Rating at + 25 C8 W or 3 A2) on heat sink3) W in free airFurther derating not Noise< V (rms)/V of applied voltage (- 40 dB)High Frequency OperationRise TimeInductance4) (L)Capacitance (C) ns at 1 H maximum.

4 H typical1) pF maximum: pF typical1)Voltage Coefficient5)< ppm/VOperating Temperature Range- 55 C to + 150 CMaximum Working Voltage300 V, Not to exceed Power ratingThermal EMF6) V/ C maximum (lead effect) g ( ) ( ) Max( ) ( ) ( ) ( ) ( ) ( )VISHAYVPR221Z1R0 1 % ( ) Dia( ) ( ) ( ) ( ) ( )E1I2I1 DIMENSIONS inches ( Z-Foil )Vishay Foil Resistors Document Number: 63116 For any questions, contact: 25-Mar-103 IMPROVED PRODUCTNote1. Measurement error Note* For non-standard requests, please contact Application 3 - PERFORMANCE SPECIFICATIONS1) MIL-PRF 39009 TEST OR CONDITIONMIL-PRF 39009 TYPICAL RMAXIMUM RLow temperature storage 24 hours at - 55 C % + % (10 ppm) % (20 ppm)Dielectric withstanding voltage 300 V AC at Atm % + % (10 ppm) % (20 ppm)Dielectric withstanding voltage 200 V AC at Brm % + % (10 ppm) % (20 ppm)Insulation resistance> 104 M > 104 M Low temperature operation % + % (20 ppm) % (80 ppm)Short time overload 5 x rated Power for 5 seconds (in air) % + % (10 ppm) % (20 ppm)Moisture resistance + 65 C to - 10 C, 90 to 98 Rh, 10 days % + % (50 ppm) % (150 ppm)Terminal Strength % + % (10 ppm) % (20 ppm)Load life 8 W at + 25 C, 2000 hours with heat sink % + % (50 ppm) % (150 ppm)Load life W at + 25 C for 2000 hours in free air % + % (50 ppm)

5 % (150 ppm)High temperature exposure + 150 C % + % (50 ppm) % (100 ppm)TABLE 4 - GLOBAL PART NUMBER INFORMATIONNEW GLOBAL PART NUMBER: Y1690420R220T9L (preferred part number format)DENOTES PRECISIONVALUEAER*YR = 0 = standard9 = lead (Pb)-free1 to 999 = customPRODUCT CODERESISTANCE TOLERANCEPACKAGING1690 = VPR221ZT= %Q= %A= %B= %C= %D= %F= %L = bulk packFOR EXAMPLE: ABOVE GLOBAL ORDER Y1690 420R220 T 9 L:TYPE: VPR221 ZVALUE: ABSOLUTE TOLERANCE: %TERMINATION: Lead (Pb)-freePACKAGING: Bulk PackHISTORICAL PART NUMBER: VPR221Z T 420R22 T B (will continue to be used) VALUETCR CHARACTERISTICABSOLUTE TOLERANCEPA C K A G I N GT = lead (Pb)-freenone = %Q= %A= %B= %C= %D= %F= %B = bulk pack69040R22Y1T92L0 Vishay Precision Group, Disclaimer NoticeDocument No.: 63999 Revision: 15-Jul-2014 DisclaimerALL PRODUCTS, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT Precision Group, Inc.

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