RCK Series Vishay Foil Resistors High Precision Foil Resistor with TCR of 2.0 ppm/C, Tolerance of 0.005 % and Load Life Stability of 0.005 % FEATURES Temperature coefficient of resistance (TCR): - 55 C to + 125 C, 25 C ref. - RCK0X series: 2 ppm/C typical (see table 1) Power rating: to 1 W at + 125 C Resistance tolerance: to 0.005 % (50 ppm) Load life stability: 0.005 % at 70 C, 2000 h at rated power Resistance range: 0.5 to 1 M (for higher or lower values, please contact Application Engineering) Vishay Foil resistors are not restricted to standard values INTRODUCTION specific as required values can be supplied at no extra cost or delivery (e.g. 1K2345 vs. 1K) Bulk Metal Foil (BMF) technology outperforms all other Electrostatic discharge (ESD) at least to 25 kV resistor technologies available today for applications that Non inductive, non capacitive design require high precision and high stability. Rise time: 1 ns effectively no ringing This technology has been pioneered and developed by Current noise: 0.010 V /V of applied voltage (< - 40 dB) RMS Vishay Foil Resistors (VFR), and products based on this Thermal EMF: 0.05 V/C Voltage coefficient: < 0.1 ppm/V technology are the most suitable for a wide range of Low inductance: < 0.08 H applications. BMF technology allows the production of Non hot-spot design customer-oriented products, designed to satisfy specific Terminal finishes available: lead (Pb)-free, tin/lead alloy challenging technical requirements. Matched sets are available on request The RCK series of BMF resistors offers low TCR, excellent (TCR tracking: to 0.5 ppm/C) Prototype quantities available in just 5 working days load life stability, tight tolerance, fast response time, low or sooner. For more information, please contact current noise, low thermal EMF and low voltage coefficient, foil vishaypg.com all in one resistor. For better TCR performances please review the datasheets for the Z Series and Z203 The RCK series is virtually insensitive to destabillizing factors. The resistor element is a solid alloy that displays the FIGURE 1 - TYPICAL RESISTANCE CHANGE desirable bulk properties of its parent material, thus it is VERSUS TEMPERATURE CURVES AND inherently stable and noise free. The standard design of these resistors provides a unique combination of CHORD SLOPES (TCR) OF TWO ALLOYS characteristics found in no other single resistor. IN MILITARY RANGE VFR s application engineering department is available to + 150 advise and to make recommendations. For non-standard + 100 technical requirements and special applications, please + 50 contact foil vishaypg.com. R R 0 (ppm) - 50 TABLE 1 - RESISTANCE VERSUS TCR - 100 (- 55 C to + 125 C, + 25 C ref.) 2 ppm/C +2 ppm/C - 150 TYPICAL TCR AND RESISTANCE (1) MAX SPREAD RESISTOR - 200 VALUE () - 50 - 25 0 + 25 + 50 + 75 + 100 + 125 (ppm/C) - 55 RCK0X 80 to < 1M 2 2.5 Temperature (C) C Alloy RCK0X 50 to < 80 2 3.5 2 ppm/C RCK0X 0.5 to < 50 2 4.5 (1) X refers to RCK Series model number - see Table 2 * Pb containing terminations are not RoHS compliant, exemptions may apply Document Number: 63214 For any questions, contact: foil vishaypg.com www.vishayfoilresistors.com Revision: 13-Jun-11 1RCK Series Vishay Foil Resistors FIGURE 2 - STANDARD IMPRINTING AND DIMENSIONS Front View Rear View Optional Customer Part Number L W Print specification, etc. if required Date Code Resistance 01 10 VFR XXXXXX Value Code Year Week H XXXX 100R01 RCK02 0.01 % Tolerance 1) ST SW LL Model Number LS Lead Material 22 AWG Round Solder Coated Copper (Pb - free coating available) Note 1. Standoffs provided to allow proper flushing of flux, debris, and contaminates from under resistor after all solder operations. 2. The standoffs shall be so located as to give a lead clearance of 0.010 minimum between the resistor body and the printed circuit board when the standoffs are seated on the printed circuit board. TABLE 2 - MODEL SELECTION AMBIENT TIGHTEST DIMENSIONS POWER RATING RESISTANCE MAXIMUM AVERAGE TOLERANCE MODEL RANGE WORKING WEIGHT IN VS. LOWEST NUMBER () VOLTAGE GRAMS RESISTANCE at at INCHES mm VALUE + 70 C + 125 C 0.6 W 0.3 W W: 0.0984 max. 2.5 max. L: 0.300 0.010 7.62 0.25 up to 100K H: 0.326 0.010 8.28 0.25 RCK02A 0.4 W 0.2 W 1 to 150K 300 0.6 ST: 0.010 min. 0.254 min. (1) (RCK02) SW: 0.040 0.010 1.02 0.13 over 100K LL: 1.000 0.125 25.4 3.18 (1) LS: 0.150 0.0054 3.81 0.13 1.0 W 0.5 W W: 0.138 max. 3.50 max. L: 0.575 max. 14.61 max. up to 200K H: 0.413 max. 10.49 max. 0.6 W 0.3 W RCK04 1 to 500K 350 1.4 ST: 0.035 0.005 0.889 0.13 SW: 0.050 0.005 1.27 0.13 over 200K LL: 1.000 0.125 25.4 3.18 LS: 0.400 0.020 10.16 0.51 1.5 W 0.75 W W: 0.160 max. 4.06 max. 0.005 %/50 L: 0.820 max. 20.83 max. 0.01 %/25 up to 300K H: 0.413 max. 10.49 max. 0.02 %/12 0.8 W 0.4 W RCK05A 1 to 750K 350 1.9 ST: 0.035 0.005 0.889 0.13 0.05 %/5 SW: 0.050 0.005 1.27 0.13 0.1 %/2 over 300K LL: 1.000 0.125 25.4 3.18 0.50 %/1 LS: 0.650 0.020 16.51 0.51 1 %/0.5 1.5 W 0.75 W W: 0.138 max. 3.505 max. L: 0.890 max. 22.606 max. up to 300K H: 0.413 max. 10.49 max. 0.8 W 0.4 W RCK05 1 to 750K 350 1.9 ST: 0.035 0.005 0.889 0.13 SW: 0.050 0.005 1.27 0.13 over 300K LL: 1.000 0.125 25.4 3.18 LS: 0.7 0.05 17.78 1.27 2.0 W 1.0 W W: 0.260 max. 6.60 max. L: 1.200 max. 30.48 max. up to 400K H: 0.413 max. 10.49 max. 1.0 W 0.5 W RCK06 0.5 to 1M 500 4.0 ST: 0.035 0.005 0.889 0.13 SW: 0.050 0.005 1.27 0.13 over 400K LL: 1.000 0.125 25.4 3.18 LS: 0.900 0.020 22.86 0.51 Notes (1) For RCK02, L.S. = 5.08 mm (0.200 inches). www.vishayfoilresistors.com For any questions, contact: foil vishaypg.com Document Number: 63214 2 Revision: 13-Jun-11