300 Series Vishay Foil Resistors Bulk Metal(R) Foil Technology High Precision 4-Terminal Power Current Sensing Resistors with TCR as low as 1 ppm/C and Tolerance 0.1 % FEATURES * Temperature Coefficient of Resistance (TCR): down to 1 ppm/C Max. (see table 2) PR O DU CT Pb-free Available * Tolerance: to 0.1 % (see table 1) RoHS* COMPLIANT * Power Rating (heat-sinked): 10 W * Load Life Stability: 0.05 % at 25 C, 2000 hours at Rated Power * Resistance Range: 0.005 to 500 * Electrostatic Discharge (ESD) above 25 000 V * Non Inductive, Non Capacitive Design * * * * * * * Any value at any tolerance available within resistance range The 300 Series offers precision Bulk Metal(R) Foil technology resistors as low as 5 m with a temperature coefficient down to 1 ppm/C and unmatched long term stability. The 4 terminal current sensing resistors, when mounted on a heat sink, can sustain 10 watts continuously without an appreciable change in resistance (0.15 % maximum). The typical 50 % power derating specification associated with other technologies is not necessary. A choice of lead configurations is available. 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. Rise Time: 1.0 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. 1K2345) * Prototype samples available from 48 hours. For more information, please contact foil@vishay.com * For better performances, please contact Application Engineering TABLE 1 - CHARACTERISTICS MODEL NUMBER RESISTANCE RANGE VCS301, VCS302 VCS331, VCS332 POWER RATING2) at + 25 C TOLERANCE1) 0.005 < R < 0.1 1% 0.1 R < 0.25 0.5 % 0.25 < R < 500 0.1 % MAXIMUM CURRENT2) 10 W on Heat Sink3) or 3 W in Free Air 15 A 5A Notes 1. Tighter tolerance is available - for more details contact Application Engineering 2. The lower of the two limitations (Power or Current) is decisive 3. Heatsink - Aluminum (6 inches length x 4 inches width x 2 inches height x 0.04 inches thick) TABLE 2 - TCR CHART (MAXIMUM) FIGURE 1 - POWER DERATING CURVE (0 C TO + 60 C) to < 0.01 15 ppm/C 0.01 to < 0.05 10 ppm/C 0.05 to < 0.1 5 ppm/C 0.1 to <1 3 ppm/C 1 to < 10 2 ppm/C 10 to < 500 1 ppm/C Percent of Rated Power 0.005 - 55 C + 25 C + 100 + 75 + 50 + 25 0 - 50 0 + 50 + 100 + 150 + 200 Ambient Temperature C (Further Derating Not Necessary) * Pb containing materials are not RoHS compliant, exemptions may apply Document Number: 63018 Revision: 26-Jun-07 For any questions, contact: foil@vishay.com www.vishay.com 1 300 Series Vishay Foil Resistors Bulk Metal(R) Foil Technology High Precision 4-Terminal Power Current Sensing Resistors with TCR as low as 1 ppm/C and Tolerance 0.1 % FIGURE 2 - TRIMMING TO VALUES (Conceptual Illustration) FIGURE 3 - TYPICAL TCR CURVE + 150 + 100 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 + 50 R R (ppm) 0 PR O DU CT Current Path Before Trimming Interloop Capacitance Reduction in Series - 50 - 100 - 150 2 ppm/C (+ 25 C reference) - 200 - 50 - 55 - 25 0 + 20 + 50 + 75 + 100 + 125 Ambient Temperature (C) (For more details, see table 2) Note: Foil shown in black, etched spaces in white FIGURE 4 - DIMENSIONS in inches (millimeters) AND SCHEMATIC Model VCS301 and VCS331 (E Lead Rectangular) W2 L1 L2 D1 Model VCS302 and VCS332 (Round Leads) L1 L2 W1 H2 W1 H2 VISHAY VCS331 0R3000 1% B9825 IM PR O VE D H1 W2 D1 D2 H1 LL D2 LS R I LT I1 E1 LL p T p VISHAY VCS332 8R2000 0.1% B9825 I LS LT E2 I2 V MODEL L1 0.008 ( 0.20) H2 W2 LL LS L2 H1 W1 0.008 MAXIMUM 0.008 MAXIMUM MAXIMUM MINIMUM 0.020 ( 0.20) ( 0.20) ( 0.51) LT 0.020 ( 0.51) VCS301 VCS331 1.340 (34.04) 0.701 (17.81) 1.063 (27.00) 0.197 (5.00) 0.210 (5.33) 0.087 (2.21) 0.216 (5.49) 0.689 (17.50) 1.083 (27.51) 0.138 (3.51) 0.040 (1.02) 0.040 (1.02) 0.016 (0.41) VCS302 VCS332 1.340 (34.04) 0.701 (17.81) 1.024 (26.01) 0.197 (5.00) 0.210 (5.33) 0.087 (2.21) 1.000 (25.40) 0.689 (17.50) 1.083 (27.51) 0.138 (3.51) 0.040 (1.02) 0.032 (0.81) - www.vishay.com 2 For any questions, contact: foil@vishay.com D2 P D1 NOMINAL NOMINAL NOMINAL T NO Document Number: 63018 Revision: 26-Jun-07 300 Series Bulk Metal(R) Foil Technology High Precision Vishay Foil Resistors 4-Terminal Power Current Sensing Resistors with TCR as low as 1 ppm/C and Tolerance 0.1 % TABLE 3 - VISHAY VCS301, VCS302, VCS331, VCS332 PERFORMANCE VCS301, VCS302, VCS331, VCS332 PERFORMANCE1) TEST OR CONDITION Maximum Ambient Temperature at Rated Power 25 C Maximum Ambient Temperature at Zero Power 150 C Temperature Coefficient see table 2 0.05 % PR O DU CT Thermal Shock Short Time Overload (5 x Rated Power for 5 seconds) 0.02 % Terminal Strength 0.05 % High Temperature Exposure 0.05 % (2000 hours at 150 C) Moisture Resistance 0.05 % Low Temperature Storage (24 hours at - 55 C) 0.05 % Shock (Specified Pulse) 0.1 % Vibration (High Frequency) 0.1 % Load Life (Rated Power, + 25 C, 2000 hours) 0.05 % Resistance Tolerance 0.1 %, 0.5 %, 1 %, 2 %, 5 % Thermal EMF 0.2 V/C Max. (E Terminal) Weight 8.1 g maximum 17 C/W2) (VCS301, VCS302) - 9 C/W2) (VCS331, VCS332) Case Temperature Rise 8 C/W2) (VCS301, VCS302) - 12.5 C/W2) (VCS331, VCS332) Thermal Resistance Notes 1. R's plus additional 0.0005 for measurement error 2. All measurements done in free air TABLE 4 - GLOBAL PART NUMBER INFORMATION NEW GLOBAL PART NUMBER: Y09600R25000B9L (preferred part number format) VALUE AER* Y R= 0 = Standard 9 = Lead (Pb)-free 1 - 999 = Custom IM PR O VE D DENOTES PRECISION Y 0 9 6 0 0 R 2 5 0 0 0 B 9 PRODUCT CODE RESISTANCE TOLERANCE PACKAGING 0959 = VCS301 0943 = VCS302 0960 = VCS331 0944 = VCS332 B = 0.1 % D = 0.5 % F = 1.0 % G = 2.0 % J = 5.0 % L = Bulk Pack L FOR EXAMPLE: ABOVE GLOBAL ORDER Y0960 0R25000 B 9 L: TYPE: VCS331 VALUE: 0.25 ABSOLUTE TOLERANCE: 0.1 % TERMINATION: Lead (Pb)-free PACKAGING: Bulk HISTORICAL PART NUMBER: VCS331T 0R2500 B B (will continue to be used) VCS331 T 0R2500 B B MODEL VCS301 VCS302 VCS331 VCS332 TERMINATION T = Lead (Pb)-free None = Tin/Lead alloy RESISTANCE VALUE 0.25 TOLERANCE B = 0.1 % D = 0.5 % F = 1.0 % G = 2.0 % J = 5.0 % PACKAGING B = Bulk Pack Note * For non-standard requests, please contact Application Engineering. Document Number: 63018 Revision: 26-Jun-07 For any questions, contact: foil@vishay.com 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. 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