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): PR O DU CT • • 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 IM PR O VE D Vishay Bulk Metal® Z-Foil resistors, designers can significantly reduce circuit errors and greatly improve overall ± 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 “ΔR 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 Ω to 500 Ω 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 µV/°C typical Voltage Coefficient < 0.1 ppm/V Non Inductive: < 0.08 µH 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 [email protected] For better performances please contact us • • • • • • • • • • • • • • • circuit performances. • Our Application Engineering Department is available to advise and make recommendations. For non-standard technical requirements and special applications, please contact us. APPLICATIONS RESISTANCE RANGE (Ω) TIGHTEST RESISTANCE TOLERANCE TYPICAL TCR AND MAX. SPREAD1) 0.5 to < 1 ± 0.05 % ± 0.2 ppm/°C ± 2.8 ppm/°C 1 to < 10 ± 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 Automatic Test Equipment (ATE) High Precision Instrumentation Electron Beam application Current Sensing applications I Pulse applications Military I Power amplifier Power supplies R E1 1 I E2 I2 V FIGURE 1- POWER DERATING CURVE - 55 °C 100 Percent of Rated Power TABLE 1 - TCR AND TOLERANCE • • • • • • • • 75 50 25 0 - 75 - 50 - 25 0 25 50 75 100 125 150 Ambient Temperature (°C) * Pb containing terminations are not RoHS compliant, exemptions may apply www.vishay.com 1 For any questions, contact: [email protected] 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) FIGURE 2 - TRIMMING TO VALUES (Conceptual Illustration) FIGURE 3 - TYPICAL TCR CURVE Z-FOIL (for more details see table 1) + 500 + 400 Interloop Capacitance Reduction in Series Current Path After Trimming Trimming Process Removes this Material from Shorting Strip Area Changing Current Path and Increasing Resistance Mutual Inductance Reduction due to Change in Current Direction + 300 + 200 PR O DU CT Current Path Before Trimming + 100 ΔR 0 R (ppm) - 100 0.05 ppm/°C - 200 - 0.1 ppm/°C 0.14 ppm/°C - 400 FIGURE 4 - VPR221SZ FORMING DIMENSIONS in inches (millimeters) 0.365 (9.27) Ref 0.015 ± 0.002 (0.38 ± 0.05) - 500 - 25 0 0.078 ± 0.005 (1.98 ± 0.13) 0.050 ± 0.005 (1.27 ± 0.13) Before Forming 0.150 ± 0.008 (3.81 ± 0.20) 0.115 ± 0.005 (2.92 ± 0.13) 0.245 ± 0.010 (6.22 ± 0.25) 0.141 ± 0.005 Dia (3.58 ± 0.13) 0.200 ± 0.030 (5.08 ± 0.76) IM PR O VE D 0.110 (2.79) Ref 0.050 ± 0.005 (1.27 ± 0.13) 0.540 ± 0.040 (13.72 ± 1.02) 0.030 ± 0.002 (0.76 ± 0.05) 0.090 (2.286) Ref I1 E1 E2 I2 0.090 ± 0.010 (2.29 ± 0.25) Heat Sink After Forming Flush with Heat Sink Within ± 0.002 (± 0.05) + 60 + 75 + 100 + 125 FIGURE 5 - VPR221SZ DIMENSIONS in inches (millimeters) VISHAY VPR221SZ 1R0 1 % 0101 0.695 ± 0.010 (17.65 ± 0.25) + 25 Ambient Temperature (°C) 0.400 ± 0.010 (10.16 ± 0.25) 0.150 ± 0.008 (3.81 ± 0.20) 0.2 ppm/°C - 0.16 ppm/°C - 55 Note: Foil shown in black, etched spaces in white 0.1 ppm/°C - 300 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) 0.100 ± 0.005 (2.54 ± 0.13) FIGURE 6 - LAND PATTERN DIMENSIONS in inches (millimeters) 0.050 ± 0.010 (1.27 ± 0.25) 0.120 ± 0.010 (3.05 ± 0.25) 0.10 ± 0.005 (2.54 ± 0.12) Document Number: 63127 Revision: 11-Jun-07 For any questions, contact: [email protected] 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 8 W or 3 A1) on heat sink2) 1.5 watts in free air Further derating not necessary. Current Noise < 0.010 µV (rms)/V of applied voltage (- 40 dB) High Frequency Operation Rise Time Inductance3) (L) Capacitance (C) 0.2 ns at 1 W 0.1 µH maximum: 0.03 µH typical 1.0 pF maximum: 0.5 pF typical Voltage Coefficient4) < 0.1 ppm/V Operating Temperature Range - 55 °C to + 150 °C Maximum Working Voltage 300 V, Not to exceed power rating Thermal EMF5) 0.15 µV/°C maximum (lead effect) Weight 1.2 g maximum PR O DU CT Power Rating at + 25 °C Notes 1. Whichever is lower. 2. Heat sink chassis dimensions are requirements per MIL-R-39009/1B: inches mm L 6.00 152.4 W 4.00 101.6 H 2.00 50.8 T 0.04 1.0 IM PR O VE D DIMENSIONS 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. µV/°C relates to EMF due to lead temperature difference. TABLE 3 - PERFORMANCE SPECIFICATIONS1) MIL-PRF 39009 TEST OR CONDITION MIL-PRF 39009 TYPICAL ΔR MAXIMUM ΔR Low temperature storage 24 hours at - 55 °C ± 0.3 % + 0.01 Ω ± 0.001 % (10 ppm) ± 0.002 % (20 ppm) Dielectric withstanding voltage 300 V AC at Atm ± 0.2 % + 0.01 Ω ± 0.001 % (10 ppm) ± 0.002 % (20 ppm) Dielectric withstanding voltage 200 V AC at Brm ± 0.2 % + 0.01 Ω ± 0.001 % (10 ppm) ± 0.002 % (20 ppm) > 104 MΩ Insulation resistance > 104 MΩ Low temperature operation ± 0.3 % + 0.01 Ω ± 0.002 % (20 ppm) ± 0.008 % (80 ppm) Short time overload 5 x rated power for 5 seconds (in air) ± 0.3 % + 0.01 Ω ± 0.001 % (10 ppm) ± 0.002 % (20 ppm) Moisture resistance + 65 °C to - 10 °C, 90 to 98 Rh, 10 days ± 0.5 % + 0.01 Ω ± 0.005 % (50 ppm) ± 0.015 % (150 ppm) Terminal Strength ± 0.2 % + 0.01 Ω ± 0.001 % (10 ppm) ± 0.002 % (20 ppm) Load life 8 W at + 25 °C, 2000 hours with heat sink ± 1.0 % + 0.01 Ω ± 0.005 % (50 ppm) ± 0.015 % (150 ppm) Load life 1.5 W at + 25 °C for 2000 hours in free air ± 1.0 % + 0.01 Ω ± 0.005 % (50 ppm) ± 0.015 % (150 ppm) High temperature exposure + 150 °C ± 1.0 % + 0.05 Ω ± 0.005 % (50 ppm) ± 0.01 % (100 ppm) Note 1. Measurement error ± 0.001 % www.vishay.com 3 For any questions, contact: [email protected] 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) VALUE AER* Y R=Ω 0 = Standard 9 = Lead (Pb)-free 1 - 999 = Custom Y 2 1 2 3 4 2 PR O DU CT DENOTES PRECISION 0 R 2 2 0 T 9 L PRODUCT CODE RESISTANCE TOLERANCE PACKAGING 2123 = VPR221SZ T = ± 0.01 % Q = ± 0.02 % A = ± 0.05 % B = ± 0.1 % C = ± 0.25 % D = ± 0.5 % F = ± 1.0 % L = Bulk FOR EXAMPLE: ABOVE GLOBAL ORDER Y2123 420R220 T 9 L: TYPE: VPR221SZ VALUE: 420.22 Ω 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) T 420R22 MODEL TERMINATION OHMIC VALUE T = Lead (Pb)-free none = Tin/Lead 420.22 Ω TCR0.2 T B TCR CHARACTERISTIC ABSOLUTE TOLERANCE PACKAGING TCR0.2 T = ± 0.01 % Q = ± 0.02 % A = ± 0.05 % B = ± 0.1 % C = ± 0.25 % D = ± 0.5 % F = ± 1.0 % IM PR O VE D VPR221SZ B = Bulk Note * For non-standard requests, please contact Application Engineering. Document Number: 63127 Revision: 11-Jun-07 For any questions, contact: [email protected] 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