VFP-3, VFP-4 Vishay Foil Resistors Bulk Metal Foil Technology Power and Current Sensing Resistors with TCR of 2 ppm/C, Tolerance to 0.01 % and power up to 10 W FEATURES Temperature Coefficient of Resistance (TCR): 2 ppm/C typical (- 55 C to + 125 C, + 25 C Ref.) (see Tables 1 and 2) Tolerance: to 0.01 % (see Tables 1 and 2) Power Rating (heat-sinked): 10 W Load Life Stability: 0.005 % at 25 C, 2000 hours at Rated Power Resistance Range: 0.05 to 80 k Any value available within resistance range Electrostatic Discharge (ESD) above 25 000 V Non Inductive, Non Capacitive Design The basic features of Vishay Bulk Metal Foil resistors tight resistance tolerance, fast response time, low TCR, and Rise Time: 1 ns without Ringing exceptional long-term stability, are available for power-circuit Current Noise: < - 40 dB applications. Typical applications are non-inductive design, Thermal EMF: 0.05 V/C typical current sensing applications, deflection amplifiers, constant Voltage Coefficient: < 0.1 ppm/V current power supplies, forced balance electronic scales, Non Inductive: < 0.08 H graphic display computers, character generation on CRTs, Non Hot Spot Design and electron beam controls. Terminal Finishes Available: Lead (Pb)-free Our Application Engineering Department is available to Tin/Lead Alloy advise and to make recommendations. For non-standard technical requirements and special applications, please Any Value available within Resistance Range (e.g. contact us. 1K2345) Prototype Samples available from 48 hours. For more R Information, please contact foil vishaypg.com I I For better Performances, please see VFP-3Z and VFP-4Z I E E I Datasheets 1 1 2 2 V 1) 1), 2) TABLE 1 - VFP-3 SPECIFICATIONS TABLE 2 - VFP-4 SPECIFICATIONS RESISTANCE STANDARD TYPICAL MAXIMUM RESISTANCE STANDARD TYPICAL MAXIMUM 3) 3) 3) 3) RANGE ( ) TOLERANCE TCR TCR RANGE () TOLERANCE TCR TCR 50 to 80K 0.01 % 5 ppm/C 10 to 500 0.01 % 5 ppm/C 25 to < 50 0.02 % 7 ppm/C 5 to < 10 0.02 % 6 ppm/C 10 to < 25 0.05 % 10 ppm/C 2 to < 5 0.05 % 8 ppm/C 5 to < 10 0.1 % 13 ppm/C 1 to < 2 0.1 % 10 ppm/C 2 to < 5 0.25 % 2 ppm/C 20 ppm/C 2 ppm/C 0.5 to < 1 0.25 % 15 ppm/C 1 to < 2 0.5 % 25 ppm/C 0.25 to < 0.5 0.5 % 20 ppm/C 0.5 to < 1 1.0 % 0.1 to < 0.25 1.0 % 25 ppm/C 0.25 to < 0.5 2.0 % 50 ppm/C 0.05 to < 0.1 2.0 % 30 ppm/C 0.1 to < 0.25 5.0 % Notes Tighter tolerance available upon request See page 3 in this data sheet for numbered footnotes. 1. Weight = 15 g Max 2. VFP-4 available up to 500 . 3. - 55 C to + 125 C, + 25 C Ref. * Pb containing terminations are not RoHS compliant, exemptions may apply Document Number: 63014 For any questions, contact: foil vishaypg.com www.foilresistors.com Revision: 23-Mar-10 1VFP-3, VFP-4 Vishay Foil Resistors FIGURE 1 - STANDARD IMPRINTING AND DIMENSIONS in inches (millimeters) VFP-3 VFP-4 + 0.004 + 0.1 + 0.1 + 0.004 0.276 (7.01 ) 0.276 (7.01 ) - 0.008 - 0.2 - 0.008 - 0.2 1.575 0.016 (40.01 0.41) 1.575 0.016 (40.01 0.41) 1.181 0.016 (30 0.41) 1.181 0.016 (30 0.41) 0.197 (5.00) 0.118 (3.00) 0.197 (5.00) 0.118 (3.00) 0.150 0.004 0.150 0.004 VISHAY VISHAY (3.81 0.1) (3.81 0.1) VFP-3 VFP-4 0.787 0.016 0.787 0.016 (Value) (Value) (19.99 0.41) (19.99 0.41) (Tol.) (Tol.) 0.394 0.008 0.394 0.008 (Date Code) (Date Code) (10.01 0.2) (10.01 0.2) Lead Dia. Lead Dia. 1.00 Min. 1.00 Min. 0.025 (0.64) 0.025 (0.633) (25.4 Min.) (25.4 Min.) Solder Coated Solder Coated Copper Copper I E E I 1 1 2 2 0.600 (15.24) 0.200 x3 (5.08) TABLE 3 - SPECIFICATIONS Stability Load Life at 2000 hours 0.05 % maximum R under full rated power (3 W at + 25 C) Power Rating 1) 2) At + 25 C 10 W or 3 A on heat sink 1) 3 W or 3 A in free air Power rating based on R. Further derating not necessary. Current Noise < 0.010 V (RMS)/V of applied voltage (- 40 dB) High Frequency Operation Rise Time 1.0 ns at 1 k 3) Inductance (L) 0.1 H maximum 0.08 H typical Capacitance (C) 1.0 pF maximum 0.5 pF typical 4) Voltage Coefficient < 0.1 ppm/V Operating Temp. Range - 55 C to + 150 C 5) Maximum Working Voltage 350 V 6) Thermal EMF 0.5 V/C typical (lead effect) FIGURE 2 - POWER DERATING CURVE FIGURE 3 - TRIMMING TO VALUES (Conceptual Illustration) - 55 C Rated Power + 100 Current Path Interloop Capacitance Before Trimming + 75 Reduction in Series + 50 Current Path After Trimming Mutual Inductance Trimming Process Reduction due + 25 Removes this Material to Change in from Shorting Strip Area Current Direction Changing Current Path 0 and Increasing - 75 - 50 - 25 0 + 25 + 50 + 75 + 100 + 125 + 150 + 175 Resistance Ambient Temperature (C) Note: Foil shown in black, etched spaces in white www.foilresistors.com For any questions, contact: foil vishaypg.com Document Number: 63014 2 Revision: 23-Mar-10 Percent of Rated Power