Y006510R0000A0L

VHP-3, VHP-4, VPR247 Vishay Foil Resistors Bulk Metal Foil Technology Hermetically Sealed Power and Current Sensing Resistor with TCR of 2 ppm/C and Power up to 10 Watts FEATURES Temperature coefficient of resistance TCR: Pb-free 2 ppm/C typical (- 55 C to + 125 C, Available + 25 C ref.) (see tables 1 and 2) RoHS* Tolerance: to 0.01 % (see tables 1 and 2) COMPLIANT Power rating (heat-sinked): 10 W Load life stability: 0.01 % at 25 C, 2000 h at rated power Resistance range: 0.05 to 80 k Any value available within resistance range Electrostatic discharge (ESD) above 25 000 V Vishay Bulk Metal Foil power resistors offer the best Non inductive, non capacitive design approach to low value power and current sensing when a Rise time: 1.0 ns without ringing combination of accuracy, tight TCR, low thermal EMF, low voltage coefficient, Kelvin connection, and long term stability Current noise: < - 40 dB (under power) are required. Thermal EMF: 0.05 V/C typical Vishay Models VHP-3 and VHP-4 offer all welded Voltage coefficient: < 0.1 ppm/V construction and screw mounting directly to a metal heat sink Non inductive: 0.08 H for maximum heat transfer. Hermetic sealing and nitrogen back fill provide the maximum protection against Non hot spot design environmental stresses, thereby ensuring long term stability. Terminal finishes available: A special feature of this construction is Kovar eyelets and VHP-3 and VHP-4: lead (Pb)-free OFHC solder plated copper leads providing the lowest tin/lead alloy thermal EMFs in the industry. VPR247: gold plated Vishay Model VPR247 has many of the advantages of the Any value available within resistance range (e.g. 1K234) VHP-4 but with significantly reduced size and weight. It also Prototype samples available from 48 h. For more has gold plated copper leads. information, please contact foil vishaypg.com Our Application Engineering department is available to For better performances, please contact Application advise and to make recommendations. For non-standard Engineering technical requirements and special applications, please contact us. 1) 1), 2) TABLE 1 - VHP-3 SPECIFICATIONS TABLE 2 - VHP-4 AND VPR247 SPECIFICATIONS RESISTANCE TIGHTEST TYPICAL MAXIMUM RESISTANCE TIGHTEST TYPICAL MAXIMUM 3), 4) 3) 3), 4) 3) RANGE () TOLERANCE TCR TCR RANGE () TOLERANCE TCR TCR 10 to 500 0.01 % 5 ppm/C 50 to 80K 0.01 % 5 ppm/C 5 to < 10 0.02 % 6 ppm/C 25 to < 50 0.02 % 7 ppm/C 2 to < 5 0.05 % 8 ppm/C 10 to < 25 0.05 % 10 ppm/C 1 to < 2 0.1 % 10 ppm/C 2 ppm/C 5 to < 10 0.1 % 13 ppm/C 0.5 to < 1 0.25 % 15 ppm/C 2 to < 5 0.25 % 2 ppm/C 20 ppm/C 0.25 to < 0.5 0.5 % 20 ppm/C 0.1 to < 0.25 1.0 % 25 ppm/C 1 to < 2 0.5 % 25 ppm/C 0.05 to < 0.1 2.0 % 30 ppm/C 0.5 to < 1 1.0 % Notes 0.25 to < 0.5 2.0 % 50 ppm/C 1. Weight of VHP-3 and VHP-4 = 15 g maximum VPR247 = 7 g maximum 0.1 to < 0.25 5.0 % 2. Available up to 500 3. - 55 C to + 125 C, + 25 C ref. 4. See figure 5 * Pb containing terminations are not RoHS compliant, exemptions may apply Document Number: 63005 For any questions, contact: foil vishaypg.com www.foilresistors.com Revision: 23-Mar-10 1VHP-3, VHP-4, VPR247 Vishay Foil Resistors TABLE 3 - GENERAL SPECIFICATIONS Stability 0.05 % maximum R, 3 W in still air at + 25 C Load life 2000 h 0.05 % maximum R under full rated power (10 W at + 25 C on heat sink) Shelf life 0.0005 % (5 ppm) maximum R/year Power Rating 2) 10 W or 3 A - heat sink At + 25 C (see Fig. 1) 3 W or 3 A - free air < 0.010 V (RMS)/V of applied voltage Current Noise (- 40 dB) High Frequency Operation Rise time 1.0 ns at 1 k without ringing 3) Inductance (L) 0.1 H maximum 0.08 H typical Capacitance (C) 1.0 pF maximum 0.5 pF typical Voltage Coefficient < 0.1 ppm/V Operating Temperature Range - 55 C to + 150 C -7 Hermeticity 10 Atmospheric cc/s maximum 7) Maximum Working Voltage 600 V 0.1 V/C maximum (lead effect) 8) Thermal EMF 2.5 V/W maximum (power effect) FIGURE 1 - POWER DERATING CURVE FIGURE 2 - KELVIN CONNECTION - 55 C Rated Power + 100 r R r 1 2 I I 1 2 + 75 r r + 50 3 4 I m 0 + 25 0 - 75 - 50 - 25 0 + 25 + 50 + 75 + 100 + 125 + 150 + 175 r 5 Ambient Temperature (C) Kelvin (4-terminal) connections are used for these low ohmic value products to measure a precise voltage drop across the resistive element. In these applications the contact resistance, lead resistance, and their TCR effect may be greater than that of the element itself and could cause significant errors if the standard 2-terminal connection is used. Figure 2 shows a high impedance measurement system where r approaches infinity and I approaches zero resulting in negligible IR drop through r 5 m 3 and r which negates their lead resistance and TCR effect. With the voltage sense leads E and E inside of r and r the 4 1 2 1 2 resistance and TCR effect of the current leads, I and I are negated and only the resistance and TCR of the element R are 1 2 sensed. This method of measurement is essential for precise current sensing. FIGURE 3 - VHP-3, VHP-4 STANDARD IMPRINTING AND DIMENSIONS in inches (millimeters) VHP-3 VHP-4 (4 terminal) Standard Marking Arrangement Mounting Print Spec Hole 0.770 (19.56) Mounting Max. Dia. Model Number Hole VISHAY Resistance TO-3 Cap VHP-3T I I 1 2 Value 12K500 TO-3 Base 0.1 % Tolerance B0729 0.040 (1.00) Dia. Date Code 0.005 ( 0.13) B 07 29 0.43 (10.92) Year Week 0.222 E 2 0.01 ( 0.25) (5.64) I I 1 2 1.00 (25.4) E 1 0.156 dia (3.9) 0.156 Dia. (3.9) 0.005 ( 0.13) E E 0.005 ( 0.13) 0.005 ( 0.13) 1 2 Case not active insulators not required mounting hardware not supplied. www.foilresistors.com For any questions, contact: foil vishaypg.com Document Number: 63005 2 Revision: 23-Mar-10 Percent of Rated Power 0.665 (16.89) 0.005 ( 0.13) 1.186 (30.13) 0.005 ( 0.13) 1.530 (38.86) 0.005 ( 0.13) 0.665 (16.89) 0.005 ( 0.13) 1.186 (30.13) 0.005 ( 0.13) 1.530 (38.86) 0.005 ( 0.13) 0.266 (6.76) 0.005 ( 0.13) 0.335 (8.51) 0.005 ( 0.13) 0.45 (11.43) Min.