THERMAL SENSORS / CIRCUIT PROTECTORS TECHNOLOGY OF TOMORROW CIRCUIT PROTECTORS FUSIBLE FLAT CHIP RESISTORS RF73 STRUCTURE 1 2 3 4 5 6 7 8 Ceramic substrate Top termination Bottom termination Fusible resistive film Protective layer End termination (Ni Cr) Diffusion barrier (Ni) Solder plating IDENTIFICATION PRODUCT CODE COATING COLOR MARKING RF73 Brown Black, 3 digits Products with Pb-free terminations meet RoHS requirements RF73B 2A New Part No. (Pb-free) RF73 2A PRODUCT CODE J STYLE TOLERANCE 1J...3A TD 22R T TD 220 J TERMINATION SURFACE MATERIAL TAPING* NOMINAL RESISTANCE RESISTANCE TOLERANCE 3 digits J: 5% T: Sn L: Sn/b TD, TE, BK *Please see "PACKAGING" FEATURES DIMENSIONS (mm) Small and light with the same configuration as a flat chip resistor (RK73 series) Works as a resistor in normal operation Fuses quickly and protects circuits when excessive voltage is applied Anti-Leaching nickel barrier terminations Fusing time: max. 60 sec. Recognized by safety standard UL1412 (2A/0805...3A/2512) (1J/0603 is not recognized) Meets or exceeds IEC 60115-8, JIS C 5201-8, EIAJ RC-2124 Rated ambient temperature: + 70 C Operating temperature range: - 55 C ... + 125 C Suitable for reflow and wave soldering ONE PULSE LIMITING ELECTRIC POWER TYPE L 0.2 W C d t 0.1 RF73 1J RF73 2A RF73 2B RF73 2E RF73 2H RF73 3A 1.6 2.0 0.8 0.1 1.25 0.1 1.6 0.2 2.6 0.2 2.5 0.2 3.1 0.2 0.3 0.1 0.4 0.2 0.3 0.1 0.3 +0.2 -0.1 0.5 3.2 5.0 6.3 0.4 + 0.2 - 0.1 0.4 + 0.2 - 0.1 0.5 0.3 0.6 (0.650.15)* * Time of change to (0.65 0.15) will be announced by PCN. EXAMPLE OF FUSING CHARACTERISTICS 3A 2H 2E 10 3A 2B 1J, 2A 1 001 0.1 1 Pulse duration (ms) 10 THERMAL SENSORS CIRCUIT PROTECTORS 10 Fusing time (s.) 100 Limiting electric power (W) Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. TYPE DESIGNATION (HOW TO ORDER) Old Part No. 1J 2A 100 0 1 2 2B 2H 2E 3 4 5 Fusing Power (W) 6 7 8 RATING SIZE TYPE POWER RATING* T.C.R. 0603 RF73 1J 0.063 W see below* 0805 RF73 2A 0.1 W 1206 RF73 2B 0.125 W +1000... -500 ppm/K (0.2...4.3) 1210 RF73 2E 0.25 W 2010 RF73 2H 0.5 W 2512 RF73 3A 1.0 W 500 ppm/K (4.7...510) *T.C.R. +1000 ... -500ppm/K (1 ... 3.3), T.C.R. 500ppm/K (3.6 ... 100) RESISTANCE RANGE (E24) 1 ... 100 J(5%) 0.2 ... 510 J (5%) FUSING CHARACTERISTICS (FUSING POWER) - 3.0 W 0.2 ...0.47 3.75 W 0.2 ...0.47 4.5 W 0.2 ...0.47 5.5 W 0.2 ...0.47 6.5 W 0.2 ...0.47 2.6 W 1 2.6 W 0.51 ...1.0 2.875 W 0.51 ...10 4.1 W 0.51 ...4.7 5.0 W 0.51 ...4.7 6.0 W 0.51 ...4.7 2.4 W 1.1 ... 20 2.4 W 1.1 ...20 2.5 W 11 ...24 3.5 W 5.1 ...27 4.0 W 5.1 ...27 5.0 W 5.1 ...30 2.1 W 22 ... 100 2.1 W 22 ...100 2.0 W 27 ...100 3.2 W 30 ...100 3.5 W 30 ...100 4.5 W 33 ...100 - 2.0 W 110 ...510 1.75 W 110 ...510 3.0 W 110 ...510 3.2 W 110 ...510 4.0 W 110 ...510 *For resistors operated at an ambient temperature of +70C or above, the power rating shall be derated. EUROPE GmbH * Kaddenbusch 6 * D-25578 Dageling / ITZEHOE * PHONE: +49 (0) 48 21 / 89 89-0 * FAX: +49 (0) 48 21/ 89 89 89 * Internet: www.koaeurope.de Revision: 5. Nov. 2004