1-866-9-ohmite ? intl 1-847-258-0300 ? fax 1-847-574-7522 ? www.ohmite.com ? info@ohmite.com 31 surface mount power rc series: carbon composition ( 1 / 4 & 1 / 2 watt) rc series: ceramic composition (above 1 / 2 watt) rf series: metal film rw series: wirewound rp series: power film rm series: high voltage thick film feature s ? tolerance 1%, 5%, 10%, depending on construction ? twelve wattage ratings ? seven package sizes ? two mounting designs to accommodate your soldering process ? five power resistor technologies to optimize your operating perfor - mance: 1. carbon and ceramic composition for surge and low inductance 2. metal film for high ohmic value and low t.c. 3. wire element for inrush current combined with low ohmic values. resistance values as low as 0.005 4. power film for high ohmic value and high wattage 5. high voltage thick film for high voltage applications ? flexible j-bend terminations ? working temperature range: -55c to +150c fle xib le j-bend standard pedestal mount recessed-base mount serie s specific ations power maximum resistance range temp. coefficient dielectric tape size quantity part number (watts)* voltage 1% tol. 5% tol. 10% tol. 0.1?C1 1 ?C10 10+ withstanding 13 reels per reel rc0s2caCCCCC 0.25 250 2.2?C5.6m 400 400 1000v 16mm 1500 rc0r5dbCCCCC 0.50 350 2.2?C20m 400 400 1000v 24mm 1000 rw0s6bbCCCCC 0.6 50 0.010?C1k 0.005?C1k 90 50 20 1000v 12mm 2500 rf0s8baCCCCC 0.8 200 1?C5m 100 100 1000v 12mm 2000 rw1s0baCCCCC 1.0 50 0.005?C1k 0.005?C1k 90 50 20 1000v 12mm 2000 rf1s0caCCCCC 1.0 350 10?C1m 1?C10m 200 100 1000v 16mm 1500 rc1r0eaCCCCC 1.0 500 3.3-100k (10% tol only) -1300 1000v 32mm 750 rp1s3caCCCCC 1.25 350 1?C1m 250 250 1000v 16mm 1500 rp1s5caCCCCC 1.5 75 0.005?C1.5k 0.005?C1.5k 90 250 250 1000v 16mm 1500 rp1s5cbCCCCC 1.5 350 1?C1m 250 250 1000v 16mm 1000 rp1r5cbCCCCC rw2s0cbCCCCC 2.0 100 0.005?C5k 0.005?C5k 90 50 20 1000v 16mm 1000 rw2r0cbCCCCC rp2s0daCCCCC 2.0 500 1?C1m 250 250 1000v 24mm 1000 rp2r0daCCCCC rw2s0daCCCCC 2.0 100 0.005?C5k 0.005?C5k 90 50 20 1000v 24mm 1000 rw2r0daCCCCC rp2r5dbCCCCC 2.5 500 1?C1m 250 250 1000v 24mm 1000 RW3R0DBCCCCC 3.0 200 0.005?C13k 0.005?C13k 90 50 20 1000v 24mm 1000 rp3r0eaCCCCC 3.0 750 1?C1m 250 250 1000v 32mm 750 rw3r5eaCCCCC 3.5 350 0.005?C25k 0.005?C25k 90 50 20 1000v 32mm 750 rm0r7eaCCCCC 0.75 2500 1k?C1000m 1k?C1000m 50 1000v 32mm 750 *25c ambient (continued)
1-866-9-ohmite ? intl 1-847-258-0300 ? fax 1-847-574-7522 ? www.ohmite.com ? info@ohmite.com 32 the temperature rise graph data was obtained by a selection of test substrate size and trace width for each resistor size to limit operating temperatures to safe values. the operating temperature safe rises are either 100c substrate temperature rise or 180c package hot spot temperature rise at 25c ambient. fr4: 0.062 in. thick; 0.062 in. traces alumina: 0.040 in. thick; 0.010 in. traces molding material rated at 205c continuous. 100% 200% 300% 200 180 160 140 120 100 80 60 40 20 t emperature rise, ? c percent rated po wer alumina solder joint fr4 package limit hot spot temperature rise 100 percent rated power ambient te mperature, ? c 60 20 0 80 40 25 50 100 150 75 0 125 derating 0.02 500 400 300 200 100 ohms 0.04 0.06 0.08 0.10 t ypical tcr for less than 0.1 smd resistors (ppm/ c) tcr surface mount power temp. cycle load life immersion (-55c to 125c, (1000 hours (260c for momentary construction 1000 cycles) at 25c) 10 sec.) overload rc carbon/ceramic comp. 4.0%+.05 10.0%+.05 3.0%+.05 6.3x rated power for 5 sec. rf metal film 0.5%+.05 0.5%+.05 0.1%+.05 2x rated power for 0.1 sec. rw wirewound 0.5%+.05 3.0%+.05 0.1%+.05 5x rated power for 5 sec. rp power film 3.0%+.05 5.0%+.05 0.5%+.05 2x rated power for 0.1 sec. rn wirewound, non-inductive 0.5%+.05 3.0%+.05 0.1%+.05 5x rated power for 5 sec. all models: leaching (260c solder immersion, 60 sec.)....................... no visible leaching thermal shock (units at -55c, then rated power applied).. no mechanical damage flammability ......................................................................... ul material rating, ul94v0 recommended solder profile 300 temperature c time (sec.) preheating 120 sec. soldering cooling 200 50 50 0 100 150 250 200 0 250 100 150 60 sec. 10 sec. preheating: 145c 15, max. 120 sec. soldering: min. 220c, max. 60 sec. max. temp.: 260c 5, 10 sec.
1-866-9-ohmite ? intl 1-847-258-0300 ? fax 1-847-574-7522 ? www.ohmite.com ? info@ohmite.com 33 surface mount power package outline dimensions pc board land pattern packages a b c d g i j l m n o p ba (in.) .246.020 .136.005 .133 ref .110.010 .047 nom. .054.012 .136.005 .150 .346 .098 .126 .050 (mm) 6.248.508 3.454.127 3.378 ref 2.794.254 1.194 nom. 1.372.305 3.454.127 3.81 8.79 2.49 3.20 1.27 ca (in.) .394.020 .159.005 .156 ref .220.010 .062 nom. .078.012 .159.005 .256 .524 .134 .126 .060 (mm) 10.008.508 4.039.127 3.962 ref 5.588.254 1.575 nom. 1.981.305 4.038.127 6.50 13.31 3.40 3.20 1.52 cb (in.) .407.020 .226.005 .222 ref .260.010 .062 nom. .084.012 .222.005 .276 .537 .131 .126 .093 (mm) 10.338.508 5.74.127 5.639 ref 6.604.254 1.575 nom. 2.134.305 5.639.127 7.01 13.64 3.33 3.20 2.36 da (in.) .455.020 .240.005 .236 ref .260.010 .062 nom. .143.012 .226.005 .317 .585 .134 .155 .093 (mm) 11.557.508 6.096.127 5.994 ref 6.604.254 1.575 nom. 3.632.305 5.740.127 8.05 14.86 3.40 3.94 2.36 db (in.) .625.020 .273.005 .268 ref .417.010 .062 nom. .143.012 .226.005 .474 .742 .134 .155 .093 (mm) 15.875.508 6.934.127 6.807 ref 10.592.254 1.575 nom. 3.632.305 5.740.127 12.040 18.85 3.40 3.94 2.36 ea (in.) .811.020 .273.005 .268 ref .572.010 .093 nom. .143.012 .273.005 .611 1.000 .195 .155 .093 (mm) 20.599.508 6.934.127 6.807 ref 14.529.254 2.362 nom. 3.632.305 6.934.127 15.52 25.4 4.95 3.94 2.36 bb (in.) .202.010 .10.010 .095 ref .079.010 .050 nom. .065.012 .135.005 0.078 0.328 0.125 0.126 0.026 (mm) 5.140.508 2.54.127 2.41 ref 2.00.254 1.280 nom. 1.640.305 3.420.127 1.98 8.33 3.18 3.20 0.66 j i c b k =0. 006 ref . d a e g h note 1 f =0. 005 .0 01 note 2 l o m p n recommended f or glue dot application note 1: packages ba and ca are only available with a pedestal base. packages cb and da are available in either pedestal or recessed base. packages db and ea are only available in a recessed base. note 2: test point is .020 above pcb. note 3: tape and reel dimensions per eia 481 a except ea size which is 12 mm component pitch versus 16mm pitch. size a nom. b c max. quantity 12mm 13 0.488" +0.078, C0.00 0.724" 2000 pcs. ba or 12.4mm +2.0, C0.0 18.4mm 2500 pcs. bb 16mm 13 0.646" +0.078, C0.00 0.882" 1500 pcs. ca or 16.4mm +2.0, C0.0 22.4mm 1000 pcs. cb 24mm 13 0.961" +0.078, C0.00 1.196" 1000 pcs. da or db 24.4mm +2.0, C0.0 30.4mm 32mm 13 1.276" +0.078, C0.00 1.52" 750 pcs. ea 32.4mm +2.0, C0.0 38.4mm reel dimensions all reels are compatible with major pick-and-place machines and made in accordance with eia 481 a (except ea size, which is 12mm component pitch versus 16mm pitch). a 0.795* 20.2 min. 0.512 .008 13.0 .200 c b 1.973 50 min. 0.059* 1. 5 min. full radius t ape star t slot measured at hub 0.098 / 2.5 min. width 0.394 / 10 min. depth land pattern dimensions are for reference only dimensions (in./mm) (continued)
1-866-9-ohmite ? intl 1-847-258-0300 ? fax 1-847-574-7522 ? www.ohmite.com ? info@ohmite.com 34 standard part numbers for surface mount power resistors rw1s0baCCC rw1s5caCCC rw2s0cbCCC rw2r0cbCCC rw2s0daCCC rw2r0daCCC RW3R0DBCCC rw3r5eaCCC rw0s6bbCCC rc1r0eaCCC ba ca cb cb da da db ea bb ea s s s r s r r r s r 1.0 1.5 2.0 2.0 2.0 2.0 3.0 3.5 0.6 1.0 wirewound 3.30 CCC3r30C k 4.70 CCC4r70C k 5.00 CCC5r00C f 5.60 CCC5r60C j 6.80 CCC6r80C k 7.50 CCC7r50C j f 10.00 CCC10r0C j j j f k 15.00 CCC15r0C j j f k 20.00 CCC20r0C j 22.00 CCC22r0C f k 24.90 CCC24r9C f 33.00 CCC33r0C f k 36.00 CCC36r0C f 47.00 CCC47r0C j j f k 50.00 CCC50r0C j 51.00 CCC51r0C j 68.00 CCC68r0C k 82.00 CCC82r0C j 100.00 CCC100rC j f k 120.00 CCC120rC j 180.00 CCC180rC j 300.00 CCC300rC j 470.00 CCC470rC j 1k CCC1k00C j k 4.7k CCC4k70C j 5k CCC5k00C j 0.005 CCCr005C j j f/j 0.010 CCCr010C f/j j j f j j j f 0.015 CCCr015C f/j j f 0.020 CCCr020C j j f j j f 0.025 CCCr025C j 0.027 CCCr027C j 0.030 CCCr030C f j j j f 0.033 CCCr033C j 0.036 CCCr036C j 0.050 CCCr050C f/j j j f j j f 0.056 CCCr056C j 0.075 CCCr075C j f 0.080 CCCr080C j j 0.100 CCCr100C f/j j j f j j j f 0.150 CCCr150C j j j 0.200 CCCr200C j j j 0.220 CCCr220C j 0.240 CCCr240C j j f 0.300 CCCr300C j j 0.330 CCCr330C j 0.400 CCCr040C j 0.400 CCCr400C j 0.470 CCCr470C j j j f 0.500 CCCr500C j j j j 0.750 CCCr750C j f 1.00 CCC1r00C f/j j j j j f 2.00 CCC2r00C f rw1s0baCCC rw1s5caCCC rw2s0cbCCC rw2r0cbCCC rw2s0daCCC rw2r0daCCC RW3R0DBCCC rw3r5eaCCC rw0s6bbCCC rc1r0eaCCC ohmic value part no. prefix suffix tolerance suffix: f = 1% j = 5% k=10% package style base: standard or recessed wattage ba ca cb cb da da db ea bb ea s s s r s r r r s r 1.0 1.5 2.0 2.0 2.0 2.0 3.0 3.5 0.6 1.0 wirewound ohmic value part no. prefix suffix tolerance suffix: f = 1% j = 5% k=10% package style base: standard or recessed wattage (for example, the part number shown is a wire - wound resistor, 3.5 watt, recessed base, 32mm tape size, first case size [a], 1000 ohms 1% tolerance.) component type r = resistor component modifier c = carbon/ceramic composition f = film p = po wer film w = wire n = wirewound, non-inductive w attage examples: 1s3 = 1.25w 2s0 or 2r0 = 2.0w 3r5 = 3.5w t ype of base s = standard r = recessed p ackage b = 12mm c = 16mm d = 24mm e = 32mm p ackage modifier a, b sequential resistance v alue r = decimal k = 1,000 m = 1,000,000 t olerance f= 1% g= 2% h= 3% j= 5% k= 10% examples: r249 = 0.249 ohms 24r9 = 24.9 ohms 2k49 = 2,490 ohms t = t ape and reel (optional) ?? ??? ?? ????? ?? e = rohs compliant a vailable jan. 2006 ordering inform ation surface mount power
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