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| VPR221SZ (Z-Foil) Vishay Foil Resistors Ultra High Precision Z-Foil Surface Mount 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). Model VPR221SZ is a 4 lead kelvin connected surface mount device which 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. 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 Volts 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) Prototype samples available from 48 hours. For more information, please contact foil@vishay.com For better performances please contact us Automatic Test Equipment (ATE) High Precision Instrumentation Electron Beam application Current Sensing applications I Pulse applications Military I Power amplifier Power supplies 1 TABLE 1 - TCR AND TOLERANCE TIGHTEST RESISTANCE TOLERANCE 0.05 % 0.02 % RESISTANCE RANGE () 0.5 to < 1 1 to < 10 TYPICAL TCR AND MAX. SPREAD1) 0.2 ppm/C 2.8 ppm/C 0.2 ppm/C 2.3 ppm/C Percent of Rated Power 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 * Pb containing terminations are not RoHS compliant, exemptions may apply www.vishay.com 1 For any questions, contact: foil@vishay.com Document Number: 63127 Revision: 11-Jun-07 PR O DU CT APPLICATIONS R I E1 V E2 I2 FIGURE 1- POWER DERATING CURVE - 55 C 100 75 50 25 0 - 75 - 50 - 25 0 25 50 75 100 125 150 Ambient Temperature (C) VPR221SZ (Z-Foil) Ultra High Precision Z-Foil Surface Mount Power Resistor Vishay Foil Resistors 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) FIGURE 2 - TRIMMING TO VALUES (Conceptual Illustration) 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 - VPR221SZ FORMING DIMENSIONS in inches (millimeters) 0.365 (9.27) Ref 0.015 0.002 (0.38 0.05) 0.150 0.008 (3.81 0.20) 0.050 0.005 (1.27 0.13) Before Forming 0.078 0.005 (1.98 0.13) 0.695 0.010 (17.65 0.25) 0.110 (2.79) Ref IM PR O VE D 0.090 (2.286) Ref 0.090 0.010 (2.29 0.25) Heat Sink After Forming Flush with Heat Sink Within 0.002 ( 0.05) FIGURE 6 - LAND PATTERN DIMENSIONS in inches (millimeters) 0.050 0.010 (1.27 0.25) 0.120 0.010 (3.05 0.25) Document Number: 63127 Revision: 11-Jun-07 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) Interloop Capacitance Reduction in Series Current Path Before Trimming + 300 + 200 FIGURE 5 - VPR221SZ DIMENSIONS in inches (millimeters) 0.400 0.010 (10.16 0.25) 0.150 0.008 (3.81 0.20) 0.245 0.010 (6.22 0.25) 0.115 0.005 (2.92 0.13) 0.050 0.005 (1.27 0.13) VISHAY VPR221SZ 1R0 1 % 0101 0.141 0.005 Dia (3.58 0.13) 0.615 Max (15.62) 0.200 0.030 (5.08 0.76) 0.050 0.005 (1.27 0.13) 0.540 0.040 (13.72 1.02) 0.030 0.002 (0.76 0.05) I1 E1 E2 I2 0.015 0.002 (0.38 0.05) 0.078 0.005 (1.98 0.13) 0.100 0.005 (2.54 0.13) 0.10 0.005 (2.54 0.12) www.vishay.com 2 VPR221SZ (Z-Foil) Vishay Foil Resistors Ultra High Precision Z-Foil Surface Mount 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) TABLE 2 - SPECIFICATIONS Power Rating at + 25 C Current Noise High Frequency Operation Rise Time Inductance3) (L) Capacitance (C) Voltage Coefficient4) Operating Temperature Range Maximum Working Voltage Thermal EMF5) Weight 8 W or 3 A1) on heat sink2) 1.5 watts 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 typical 1.0 pF maximum: 0.5 pF typical < 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 Notes 1. Whichever is lower. 2. 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 IM PR O VE D 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 3. Inductance (L) mainly due to the leads. 4. The resolution limit of existing test requirement (within the measurement capability of the equipment, "essentially zero"). 5. V/C relates to EMF due to lead temperature difference. TABLE 3 - PERFORMANCE SPECIFICATIONS1) MIL-PRF 39009 MIL-PRF 39009 TYPICAL R 0.001 % (10 ppm) 0.001 % (10 ppm) 0.001 % (10 ppm) MAXIMUM R 0.002 % (20 ppm) 0.002 % (20 ppm) 0.002 % (20 ppm) > 104 M 0.002 % (20 ppm) 0.001 % (10 ppm) 0.005 % (50 ppm) 0.001 % (10 ppm) 0.005 % (50 ppm) 0.005 % (50 ppm) 0.005 % (50 ppm) 0.008 % (80 ppm) 0.002 % (20 ppm) 0.015 % (150 ppm) 0.002 % (20 ppm) 0.015 % (150 ppm) 0.015 % (150 ppm) 0.01 % (100 ppm) 0.3 % + 0.01 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 % www.vishay.com 3 For any questions, contact: foil@vishay.com PR O DU CT 0.2 % + 0.01 0.2 % + 0.01 > 104 M 0.3 % + 0.01 0.3 % + 0.01 0.5 % + 0.01 0.2 % + 0.01 1.0 % + 0.01 1.0 % + 0.01 1.0 % + 0.05 Document Number: 63127 Revision: 11-Jun-07 VPR221SZ (Z-Foil) Ultra High Precision Z-Foil Surface Mount Power Resistor Vishay Foil Resistors 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) TABLE 4 - GLOBAL PART NUMBER INFORMATION NEW GLOBAL PART NUMBER: Y2123420R220T9L (preferred part number format) DENOTES PRECISION Y VALUE R= AER* 0 = Standard 9 = Lead (Pb)-free 1 - 999 = Custom Y 2 1 2 3 4 2 PRODUCT CODE 2123 = VPR221SZ 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 Y2123 420R220 T 9 L: TYPE: VPR221SZ VALUE: 420.22 ABSOLUTE TOLERANCE: 0.01 % TERMINATION: Lead (Pb)-free PACKAGING: Bulk HISTORICAL PART NUMBER: VPR221SZ T 420R22 TCR0.2 T B (will continue to be used) VPR221SZ MODEL T TERMINATION T = Lead (Pb)-free none = Tin/Lead 420R22 OHMIC VALUE 420.22 TCR0.2 IM PR O VE D Note * For non-standard requests, please contact Application Engineering. Document Number: 63127 Revision: 11-Jun-07 For any questions, contact: foil@vishay.com PR O DU CT 0 R 2 2 0 T 9 L PACKAGING L = Bulk T B TCR CHARACTERISTIC TCR0.2 ABSOLUTE TOLERANCE T = 0.01 % Q = 0.02 % A = 0.05 % B = 0.1 % C = 0.25 % D = 0.5 % F = 1.0 % PACKAGING B = Bulk www.vishay.com 4 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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