VTA52 through 56, VMTA55, VMTB60 Vishay Foil Resistors Bulk Metal Foil Technology Tubular Axial-Lead Resistors, Meets or Exceed MIL-R-39005 Requirements FEATURES Temperature Coefficient of Resistance (TCR): 8 ppm/C (- 55 C to + 125 C, + 25 C Ref.) Pb-free 4 ppm/C (0 C to + 60 C) Available Tolerance: to 0.01 % RoHS* Load Life Stability: COMPLIANT 0.05 % at 25 C, 2000 hours at Rated Power 0.0025 % at 25 C, 2000 hours at Low Power Electrostatic Discharge (ESD) above 25 000 Volts Resistance Range: 5 to 500 k Power Rating: 0.2 W to 1.0 W at 70 C Non-Inductive, Non-Capacitive Design Any value and tolerance available within resistance range Thermal EMF: 0.1 V/C maximum, 0.05 V/C typical This series of axial leaded resistors is made using the same Voltage Coefficient: < 0.1 ppm/V foil technology as the S102C. The difference is axial versus Terminal Finishes available: Lead (Pb)-free radial leads. Axial leads have the advantage of readily Tin/Lead available auto insertion equipment while the radial leaded For better performances, please contact Application Engineering devices may require additional tooling. Also, when Any value available within resistance range (e.g. 1K2345) converting from metal film (RNC 55) to foil (VMTA 55) boards Prototype samples available from 48 hours. For more may already be laid out for the axial leaded device. It is worth information, please contact foil vishaypg.com noting that for new designs the S102C footprint is the smallest in the industry (taking into account the need for lead FIGURE 1 - POWER DERATING CURVE exit to board pad length allowance). Double Rated Power Our Application Engineering Department is available to 220 advise and to make recommendations. For non-standard 200 technical requirements and special applications, please 180 contact us. Rated 160 Power 140 TABLE 1 - TCR (for values under 50R) 120 100 - 55 to + 125 C, VALUES 0 C to + 60 C + 25 C Ref. 80 25R - 50R 5 ppm/C 8 ppm/C 60 40 15R - 24R999 6 ppm/C 10 ppm/C + 145 C 20 5R - 14R999 8 ppm/C 12 ppm/C 0 1R - 4R999 15 ppm/C 20 ppm/C 30 40 50 60 70 80 90 100 110 120 130 140 150 Ambient Temperature (C) TABLE 2 - MODEL SELECTION POWER VISHAY MIL MAXIMUM RESISTANCE TIGHTEST 2) TCR RANGE 1) MODEL STYLE WORKING VOLTAGE RANGE ( ) TOLERANCE at + 70 C at + 125 C 5 to 24R9 0.1 % V4 VTA56 RBR56 0.25 W 0.125 W 300 V 25 to 150K 0.01 % V3, V2 5 to 24R9 0.1 % V4 VTA55 RBR55 0.3 W 0.15 W 300 V 25 to 150K 0.01 % V3, V2 5 to 24R9 0.1 % V4 VTA54 RBR54 0.5 W 0.25 W 300 V 25 to 300K 0.01 % V3, V2 5 to 24R9 0.1 % V4 VTA53 RBR53 0.66 W 0.33 W 300 V 25 to 300K 0.01 % V3, V2 5 to 24R9 0.1 % V4 VTA52 RBR52 1.0 W 0.5 W 300 V 25 to 500K 0.01 % V3, V2 5 to 49R9 0.1 % V4 VMTA55 RNC55 0.2 W 0.1 W 200 V 50 to 30K 0.01 % V3, V2 5 to 49R9 0.1 % V4 VMTB60 RNC60 0.25 W 0.125 W 250 V 50 to 60K 0.01 % V3, V2 Notes 1. For higher/lower resistance values, consult the Application Engineering Department 2. TCR options for values > 50 V4 = 4 ppm/C (0 to + 60 C) 8 ppmC (- 55 C to + 125 C, + 25 C Ref.) V3 = 3 ppm/C (0 to + 60 C) 5 ppm/C (- 55 C to + 125 C, + 25 C Ref.) V2 = 2 ppm/C (0 to + 60 C) 5 ppm/C (- 55 C to + 125 C, + 25 C Ref.) * Pb containing terminations are not RoHS compliant, exemptions may apply Document Number: 63011 For any questions, contact: foil vishaypg.com www.foilresistors.com Revision: 23-Mar-10 1 Percent of Power Rating at 70 CVTA52 through 56, VMTA55, VMTB60 Vishay Foil Resistors FIGURE 2 - VTA/VMTA SERIES STANDARD PRINTING FIGURE 3 - TRIMMING TO VALUES (Conceptual Illustration) A C Model Number TCR Designation VTA52 V4 VTA52V4 0720 Current Path Interloop Capacitance Before Trimming VISHAY Reduction in Series Date Code 07 20 Current Path year week After Trimming Mutual Inductance Trimming Process Reduction due 200K00 Removes this Material to Change in from Shorting Strip Area Current Direction Changing Current Path 0.02 % and Increasing Resistance Resistance Value Tolerance 200 k Note: Foil shown in black, etched spaces in white D B TABLE 3 - VTA/VMTX DIMENSIONS BODY LEAD VISHAY MIL LENGTH (A) DIAMETER (B) LENGTH (C) DIAMETER (D) MODEL SIZE INCH mm INCH mm INCH mm INCH mm + 0.13 + 0.13 + 0.005 + 0.005 VTA56 RBR56 0.356 -------------------- 9.04 ---------------- 0.260 -------------------- 6.60 ---------------- 1.5 Minimum 38.10 0.032 0.81 - 0.010 - 0.25 - 0.015 - 0.38 + 0.005 + 0.13 VTA55 RBR55 0.500 0.020 12.70 0.51 0.260 -------------------- 6.60 ---------------- 1.5 Minimum 38.10 0.032 0.81 - 0.25 - 0.010 + 0.020 + 0.51 + 0.005 + 0.13 -------------------- ---------------- -------------------- ---------------- VTA54 RBR54 0.750 19.05 0.260 6.60 1.5 Minimum 38.10 0.032 0.81 - 0.81 - 0.032 - 0.010 - 0.25 VTA53 RBR53 0.750 0.020 19.05 0.51 0.375 0.015 9.53 0.38 1.5 Minimum 38.10 0.032 0.81 + 0.51 + 0.020 ---------------- VTA52 RBR52 1.000 -------------------- 25.40 0.375 0.015 9.53 0.38 1.35 Minimum 34.29 0.032 0.81 - 0.032 - 0.81 + 0.005 + 0.13 VMTA55 RNC55 0.270 0.005 6.86 0.13 0.120 -------------------- 3.05 ---------------- 1.5 Minimum 38.10 0.025 0.64 - 0.25 - 0.010 VMTB60 RNC60 0.375 0.005 9.53 0.13 0.160 0.005 4.06 0.13 1.5 Minimum 38.10 0.025 0.64 FIGURE 4 - TEMPERATURE COEFFICIENT OF RESISTANCE + 400 + 200 + 4 ppm/C + 140 + 100 R R 0 (ppm) - 100 - 140 - 4 ppm/C - 200 - 400 0 + 25 + 60 Temperature, C www.foilresistors.com For any questions, contact: foil vishaypg.com Document Number: 63011 2 Revision: 23-Mar-10