*rohs directive 2002/95/ec jan 27, 2003 including annex. specifications are subject to change without notice. customers should verify actual device performance in their specific applications. 4a12p-506-500 - surge line protection module matched pair of resistors plus thermal fuse electrical characteristics resistance values (r1 = r2)........................................................50 resistance tolerance..................................................................1 % tcr ..................................................................................100 ppm/c ratio tolerance ........................................................................0.5 % power dissipation (per resistor) @ 25 % .......................................2 w temperature range...................................................-40 oc to +85 oc physical characteristics body style .............................................dual in line smd - twin pack substrate material ........................................................96 % alumina lead frame material .......................................copper, solder coated flammability .....................................................conforms to ul94v-0 processability................unit is only suitable for no-clean processing convection reflow...................unit will withstand 260 , 20 seconds packaging ..................16 diameter reels, 44mm tape, 250 pcs./reel functional characteristics lightning surge test...........................................10 x 700 sec, 1 kv power induction ...................................................................300 vrms power contact .....................................................................220 vrms features rohs compliant* versions available overvoltage/lightning protection to itu-t k.20 standard ?ff-the-shelf?design typical application is secondary protection on telecom line cards 4 2 1 8 10 11 32.81 (1.292) 3.72 (.146) max. 10.16 .13 (.400 .005) 5.08 .13 (.200 .005) 2.54 .13 (.100 .005) 12.70 (.500) 14.59 (.575) product dimensions electrical schematic dimensions: millimeters (inches) asia-pacific: tel +886- (0)2 25624117 ? fax +886- (0)2 25624116 europe: tel +41-41 7685555 ? fax +41-41 7685510 americas: tel +1-951 781-5500 ? fax +1-951 781-5700 www.bourns.com rev. 06/11 how to order 4a 12 p - 506 - 500 lf model (4a = surface mount) number of pins physical configuration electrical configuration 506 = matched pair of resistors plus thermal fuse resistance code ? 500 = 50 rohs compliant option blank = standard product lf = rohs compliant product 5.28 .013 (0.208 .005) 7.11 .25 (0.280 .010) 2.54 .25 (.100 .010) 13.40 .25 (.527 .010) 15 13 12 r3 8 10 11 r2 22 21 19 1 2 4 r1 r4 *rohs compliant versions available
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