Cylindrical Surface Mount Metal Glaze Compliant Terminal Resistors SMC Series Lead free, RoHS compliant Uses standard IRC 2512, 3610 solder pads Ideal for automotive and other harsh thermal applications Uncompromising Metal Glaze performance gives excellent surge performance Capped terminals provide mechanical compliance-relief from board vs. component TCE mismatch Electrical Data Industry Power Resistance Operating Maximum IRC Tolerance TCR Standard Rating 70C Range Voltage Voltage 1 Type (%) (ppm/C) Footprint (Watts) (Ohms) (V) (V) SMC-1 2512 1.0 0.5 to 1M 1, 2, 5 100 350 650 SMC-2 3610 2.0 0.5 to 2M 1, 2, 5 100 500 1000 Notes: 1 For tolerances below 1%, please contact factory. Environmental Data Characteristics Maximum Change Test Method MIL-PRF-55342E Par 4.7.9 Temperature Coef cient (ppm/C) As speci ed (-55C to +125C) MIL-PRF-55342E Par 4.7.3 Thermal Shock 0.5% +0.01 (-65C to +150C) MIL-PRF-55342E Par 4.7.4 Low Temperature Operation 0.25% +0.01 (-65C working voltage) MIL-PRF-55342E Par 4.7.5 0.5% +0.01 Short Time Overload 1% for (R>100K) (2.5 x PxR f or 5 seconds) MIL-PRF-55342E Par 4.7.6 High Temperature Exposure 0.5% +0.01 (+150C for 100 hours) MIL-PRF-55342E Par 4.7.7 Resistance to Bonding 0.25% +0.01 (Re ow soldered to board 260C for 10 seconds) MIL-STD-202, Method 208 Solderability 95% minimum coverage (245C for 5 seconds) MIL-PRF-55342E Par 4.7.8 Moisture Resistance 0.5% +0.01 (10 cycles, total 240 hours) MIL-PRF-55342E Par 4.7.10 Life Test 0.5% +0.01 (2000 hours 70C intermittent) 1% +0.01 1200 gram push from underside of Terminal Adhesion Strength no mechanical damage mounted chip for 60 seconds Chip mounted in center of 90mm long board, 1% +0.01 Resistance to Board Bending de ected 5mm so as to exert pull on chip contacts no mechanical damage for 10 seconds Operating Temperature -55C to +150C General Note IRC reserves the right to make changes in product speci cation without notice or liability. All information is subject to IRCs own data and is considered accurate at time of going to print. A subsidiary of TT electronics plc Wire and Film Technologies Division 4222 South Staples Street Corpus Christi Texas 78411 USA Telephone: 361 992 7900 Facsimile: 361 992 3377 Website: www.irctt.com SMC Series Issue July 2009 Sheet 1 of 3Cylindrical Surface Mount Metal Glaze Compliant Terminal Resistors Physical Data L C W Dimensions (Inches and (mm)) Industry L W C IRC Type Footprint (Length) (Width/Diameter) (Termination Width) 0.250 0.010 0.122 0.003 0.060 0.010 2512 SMC-1 (6.35 0.25) (3.10 0.08) (1.50 0.25) 0.367 0.010 0.122 0.003 0.060 0.010 3610 SMC-2 (9.32 0.25) (3.10 0.08) (1.50 0.25) Recommended Solder Pad Dimensions (Re ow): F A C A B E D Dimensions (Inches and mm)) Industry Footprint ABCD E F 0.121 0.126 0.127 0.183 0.040 0.369 2512 (3.07) (3.20) (3.23) (4.65) (1.02) (9.37) 0.170 0.160 0.213 0.273 0.044 0.553 3610 (4.32) (4.06) (5.41) (6.93) (1.12) (14.05) Wire and Film Technologies Division 4222 South Staples Street Corpus Christi Texas 78411 USA Telephone: 361 992 7900 Facsimile: 361 992 3377 Website: www.irctt.com SMC Series Issue July 2009 Sheet 2 of 3