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| VPR221Z (Z-Foil) Vishay Foil Resistors 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) FEATURES * Temperature Coefficient of Resistance (TCR): * * Any value at any tolerance available within resistance range * * 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(R) Z-Foil resistors, designers can significantly reduce circuit errors and greatly improve overall circuit performances. Model VPR221Z is a 4 lead kelvin connected device. * * * * * * * * * * * IM PR O VE D Our Application Engineering Department is available to advise and make recommendations. For non-standard technical requirements and special applications, please contact us. * * 0.05 ppm/C typical (0 C to + 60 C) Pb-free 0.2 ppm/C typical (- 55 C to + 125 C, Available + 25 C Ref.) (see table 1) RoHS* COMPLIANT Tolerance: to 0.01 % Power Coefficient "R due to self heating" 4 ppm/W typical Rated Power: 8 W chassis mounted (MIL-PRF-39009) Load Life Stability: to 0.005 % at 25 C for 2000 hours, at 1.5 W Resistance Range: 0.5 to 500 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 V/C typical Voltage Coefficient < 0.1 ppm/V Non Inductive: < 0.08 H Non Hot Spot Design Terminal Finishes available: Lead (Pb)-free Tin/Lead Alloy Any value available within resistance range (e.g. 1K234) For better performances please contact us TABLE 1 - TCR AND TOLERANCE TIGHTEST RESISTANCE TOLERANCE 0.05 % RESISTANCE RANGE () 0.5 to < 1 1 to < 10 TYPICAL TCR AND MAX. SPREAD1) 0.2 ppm/C 2.8 ppm/C Percent of Rated Power 0.02 % 0.2 ppm/C 2.3 ppm/C 10 to 500 0.01 % 0.2 ppm/C 1.8 ppm/C Notes * 1. MIL-Range (- 55 C to + 125 C, + 25 C Ref.) Contact Applications Engineering for other available values 0 - 75 - 50 - 25 0 25 50 75 100 125 150 * Pb containing terminations are not RoHS compliant, exemptions may apply Document Number: 63116 Revision: 16-Jul-07 For any questions, contact: foil@vishay.com www.vishay.com 1 PR O DU CT APPLICATIONS * * * * * * * * Automatic Test Equipment (ATE) High Precision Instrumentation Electron Beam application Current Sensing applications I Pulse applications Military I1 Power amplifier Power supplies R E1 V E2 I2 I FIGURE 1- POWER DERATING CURVE - 55 C 100 75 50 25 Ambient Temperature (C) VPR221Z (Z-Foil) Vishay Foil Resistors Ultra High Precision Z-Foil Power Resistor in TO-220 FIGURE 2 - TRIMMING TO VALUES (Conceptual Illustration) Configuration with TCR of 0.05 ppm/C, PCR of 4 ppm/W and Load Life Stability of 0.005 % (50 ppm) FIGURE 3 - TYPICAL TCR CURVE Z-FOIL (for more details see table 1) + 500 + 400 Mutual Inductance Reduction due to Change in Current Direction Current Path After Trimming Trimming Process Removes this Material from Shorting Strip Area Changing Current Path and Increasing Resistance Note: Foil shown in black, etched spaces in white FIGURE 4 - VPR221Z DIMENSIONS in inches (millimeters) 0.400 0.010 (10.16 0.25) 0.245 0.010 (6.22 0.25) VISHAY VPR221Z 1R0 1 % 0101 0.115 0.005 (2.92 0.13) 0.141 0.005 Dia (3.58 0.13) 0.200 0.030 (5.08 0.76) 0.540 0.040 (13.72 1.02) I1 E1 E2 I2 0.100 0.005 (2.54 0.13) 0.050 0.005 (1.27 0.13) 0.030 0.002 (0.76 0.05) IM PR O VE D A surface mount version of this product is available see data sheets for VPR220S, VPR221S TABLE 2 - SPECIFICATIONS Power Rating at + 25 C Current Noise High Frequency Operation Rise Time Inductance4) (L) Capacitance (C) Voltage Coefficient5) Operating Temperature Range Maximum Working Voltage Thermal EMF6) Weight 8 W or 3 A2) on heat sink3) 1.5 W in free air Further derating not necessary. < 0.010 V (rms)/V of applied voltage (- 40 dB) 0.2 ns at 1 W 0.1 H maximum: 0.03 H typical1) 1.0 pF maximum: 0.5 pF typical1) < 0.1 ppm/V - 55 C to + 150 C 300 V, Not to exceed power rating 0.15 V/C maximum (lead effect) 1.2 g maximum 4. Inductance (L) mainly due to the leads. 5. The resolution limit of existing test requirement (within the measurement capability of the equipment, "essentially zero"). 6. V/C relates to EMF due to lead temperature difference. Notes 1. Maximum is 1.0 % A.Q.L. standard for all specifications except TCR. 2. Whichever is lower. 3. Heat sink chassis dimensions are requirements per MIL-R-39009/1B: DIMENSIONS L W H T inches 6.00 4.00 2.00 0.04 mm 152.4 101.6 50.8 1.0 www.vishay.com 2 For any questions, contact: foil@vishay.com PR O DU CT + 100 R 0 R (ppm) - 100 - 200 - 300 0.05 ppm/C - 0.1 ppm/C 0.1 ppm/C 0.14 ppm/C - 400 - 0.16 ppm/C - 25 0 0.2 ppm/C - 500 - 55 + 25 + 60 + 75 + 100 + 125 Ambient Temperature (C) 0.150 0.008 (3.81 0.20) 0.050 0.005 (1.27 0.13) 0.615 Max (15.62) 0.015 0.002 (0.38 0.05) 0.078 0.005 (1.98 0.13) Interloop Capacitance Reduction in Series Current Path Before Trimming + 300 + 200 Document Number: 63116 Revision: 16-Jul-07 VPR221Z (Z-Foil) Ultra High Precision Z-Foil Power Resistor in TO-220 Vishay Foil Resistors Configuration with TCR of 0.05 ppm/C, PCR of 4 ppm/W and Load Life Stability of 0.005 % (50 ppm) TABLE 3 - PERFORMANCE SPECIFICATIONS1) MIL-PRF 39009 TEST OR CONDITION Low temperature storage 24 hours at - 55 C Dielectric withstanding voltage 300 V AC at Atm Dielectric withstanding voltage 200 V AC at Brm Insulation resistance Low temperature operation Short time overload 5 x rated power for 5 seconds (in air) Moisture resistance + 65 C to - 10 C, 90 to 98 Rh, 10 days Terminal Strength Load life 8 W at + 25 C, 2000 hours with heat sink Load life 1.5 W at + 25 C for 2000 hours in free air High temperature exposure + 150 C Note 1. Measurement error 0.001 MIL-PRF 39009 0.3 % + 0.01 0.2 % + 0.01 0.2 % + 0.01 > 104 M 0.3 % + 0.01 TYPICAL R 0.001 % (10 ppm) 0.001 % (10 ppm) 0.001 % (10 ppm) 0.002 % (20 ppm) 0.005 % (50 ppm) MAXIMUM R 0.002 % (20 ppm) 0.002 % (20 ppm) 0.002 % (20 ppm) > 104 M 0.008 % (80 ppm) TABLE 4 - GLOBAL PART NUMBER INFORMATION DENOTES PRECISION Y VALUE R= NEW GLOBAL PART NUMBER: Y1690420R220T9L (preferred part number format) Y 1 6 9 0 4 2 IM PR O VE D PRODUCT CODE 1690 = VPR221Z RESISTANCE TOLERANCE T = 0.01 % Q = 0.02 % A = 0.05 % B = 0.1 % C = 0.25 % D = 0.5 % F = 1.0 % FOR EXAMPLE: ABOVE GLOBAL ORDER Y1690 420R220 T 9 L: TYPE: VPR221Z VALUE: 420.22 ABSOLUTE TOLERANCE: 0.01 % TERMINATION: Lead (Pb)-free PACKAGING: Bulk Pack HISTORICAL PART NUMBER: VPR221Z T 420R22 TCR0.2 T B (will continue to be used) VPR221Z MODEL T 420R22 TCR0.2 TCR CHARACTERISTIC TCR0.2 T ABSOLUTE TOLERANCE T = 0.01 % Q = 0.02 % A = 0.05 % B = 0.1 % C = 0.25 % D = 0.5 % F = 1.0 % B PACKAGING B = Bulk Pack TERMINATION OHMIC VALUE 420.22 T = Lead (Pb)-free none = Tin/Lead Note * For non-standard requests, please contact Application Engineering. Document Number: 63116 Revision: 16-Jul-07 For any questions, contact: foil@vishay.com PR O DU CT 0.3 % + 0.01 0.001 % (10 ppm) 0.002 % (20 ppm) 0.5 % + 0.01 0.015 % (150 ppm) 0.002 % (20 ppm) 0.2 % + 0.01 0.001 % (10 ppm) 0.005 % (50 ppm) 0.005 % (50 ppm) 1.0 % + 0.01 0.015 % (150 ppm) 0.01 % (100 ppm) 1.0 % + 0.01 0.015 % (150 ppm) 1.0 % + 0.05 0.005 % (50 ppm) AER* 0 = Standard 9 = Lead (Pb)-free 1 - 999 = Custom 0 R 2 2 0 T 9 L PACKAGING L = Bulk Pack www.vishay.com 3 Legal Disclaimer Notice Vishay Disclaimer All product specifications and data are subject to change without notice. Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively, "Vishay"), disclaim any and all liability for any errors, inaccuracies or incompleteness contained herein or in any other disclosure relating to any product. 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's terms and conditions of purchase, including but not limited to the warranty expressed therein, which apply to these products. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document or by any conduct of Vishay. The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications unless otherwise expressly indicated. Customers using or selling Vishay products not expressly indicated for use in such applications do so entirely at their own risk and agree to fully indemnify Vishay for any damages arising or resulting from such use or sale. Please contact authorized Vishay personnel to obtain written terms and conditions regarding products designed for such applications. Product names and markings noted herein may be trademarks of their respective owners. Document Number: 91000 Revision: 18-Jul-08 www.vishay.com 1 |
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