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this section has two parts: ? a selection guide that walks you through the process of selecting the correct rxe device for a circuit. ? product data that outlines electrical characteristics, physical characteristics, agency recognitions, environmental specifications, component layouts, tape and reel specifications, and ordering information for rxe devices. rxe selection guide follow these seven steps to select a polyswitch rxe device for a circuit: 1. define the operating parameters for the circuit. these include: ? maximum ambient operating temperature ? normal operating current ? maximum operating voltage (rxe is 60 v maximum) ? maximum interrupt current 2. select the rxe device that accommodates the circuits maximum ambient operating temperature and normal operating current. 3. compare the rxe devices maximum operating voltage and maximum interrupt current with the circuits to be sure the circuit does not exceed the device ratings. 4. check the rxe devices time-to-trip to be sure it will protect the circuit. 5. verify that the circuits ambient operating temperatures are within the rxe devices operating temperature range. 6. verify that the rxe devices dimensions fit the applications space considerations. 7. independently evaluate and test the suitability and performance of the rxe device in the application. raychem circuit protection devices rxe devices 165 rxe selection guide and product data tuv rheinland a 4 rxe(7) 1/15/99 11:44 am page 165
1. define the circuits operating parameters. fill in the following information about the circuit: maximum ambient operating temperature ________________ normal operating current ________________ maximum operating voltage (rxe is 60 v max.) ________________ maximum interrupt current ________________ 2. select the polyswitch rxe device that will accommodate the circuits maximum ambient operating temperature and nor- mal operating current. look across the top of the table on the next page to find the tempera- ture that most closely matches the circuits maximum ambient operat- ing temperature. look down that column to find the value equal to or greater than the circuits normal operating current. now look to the far left of that row to find the part number for the rxe device that will best accommodate the circuit. the thermal derating curve located on the next page is a normalized representation of the data in the table located on the same page. 166 rxe devices raychem circuit protection devices rxe radial leaded 4 rxe(7) 1/15/99 11:44 am page 166
raychem circuit protection devices rxe devices 167 rxe radial leaded device? ambient temperature ( c) ?0 ?0 0 20 40 60 80 0 percent of rated hold and trip current 50 100 150 200 thermal derating curve i hold vs. temperature part maximum ambient operating temperatures (c) number C40 C20 0 20 40 50 60 70 85 rxe010 0.16 0.14 0.12 0.10 0.08 0.07 0.06 0.05 0.04 rxe017 0.26 0.23 0.20 0.17 0.14 0.12 0.11 0.09 0.07 rxe020 0.31 0.27 0.24 0.20 0.16 0.14 0.13 0.11 0.08 rxe025 0.39 0.34 0.30 0.25 0.20 0.18 0.16 0.14 0.10 rxe030 0.47 0.41 0.36 0.30 0.24 0.22 0.19 0.16 0.12 rxe040 0.62 0.54 0.48 0.40 0.32 0.29 0.25 0.22 0.16 rxe050 0.78 0.68 0.60 0.50 0.41 0.36 0.32 0.27 0.20 rxe065 1.01 0.88 0.77 0.65 0.53 0.47 0.41 0.35 0.26 rxe075 1.16 1.02 0.89 0.75 0.61 0.54 0.47 0.41 0.30 rxe090 1.40 1.22 1.07 0.90 0.73 0.65 0.57 0.49 0.36 rxe110 1.71 1.50 1.31 1.10 0.89 0.79 0.69 0.59 0.44 rxe135 2.09 1.84 1.61 1.35 1.09 0.97 0.85 0.73 0.54 rxe160 2.48 2.18 1.90 1.60 1.30 1.15 1.01 0.86 0.64 rxe185 2.87 2.52 2.20 1.85 1.50 1.33 1.17 1.00 0.74 RXE250 3.88 3.40 2.98 2.50 2.03 1.80 1.58 1.35 1.00 rxe300 4.65 4.08 3.57 3.00 2.43 2.16 1.89 1.62 1.20 rxe375 5.81 5.10 4.46 3.75 3.04 2.70 2.36 2.03 1.50 4 rxe(7) 1/15/99 11:44 am page 167
168 rxe devices raychem circuit protection devices rxe radial leaded 3. compare maximum operating voltages and maximum interrupt currents. look down the first column of the table below to find the part number you selected in step 1. look to the right in that row to find the devices maximum operating voltage (v max.) and maximum interrupt current (i max.). compare both ratings with the circuits to be sure the circuits ratings do not exceed those of the rxe device. maximum device voltages and currents part v max. i max.* number (volts) (amps) rxe010 60 40 rxe017 60 40 rxe020 60 40 rxe025 60 40 rxe030 60 40 rxe040 60 40 rxe050 60 40 rxe065 60 40 rxe075 60 40 rxe090 60 40 rxe110 60 40 rxe135 60 40 rxe160 60 40 rxe185 60 40 RXE250 60 40 rxe300 60 40 rxe375 60 40 * devices may withstand higher interrupt current at lower voltages. each application will need to be individually qualified. 4 rxe(7) 1/15/99 11:44 am page 168
raychem circuit protection devices rxe devices 169 4. determine time-to-trip. time-to-trip is the amount of time it takes for a device to switch to a high-resistance state once a fault current has been applied across the device. identifying the rxe devices time-to-trip is important in order to provide the desired protection capabilities. if the device you choose trips too fast, undesired or nuisance tripping will occur. if the device trips too slowly, the components being protected may be damaged before the device switches to a high-resistance state. the chart below shows the typical time-to-trip at 20c for each polyswitch rxe device. for example, the chart indicates that the typical time-to-trip for rxe050 at 5 a is 0.3 second. on the chart below, find the typical time-to-trip for the rxe device you selected. if the rxe devices time-to-trip is too fast or too slow for the circuit, go back to step 2 and choose an alternate device. typical time-to-trip at 20c 1000 100 10 1 0.1 0.01 0.001 0.1 1 10 100 fault current (a) time-to-trip (s) abcdefghijklmnopq a = rxe010 b = rxe017 c = rxe020 d = rxe025 e = rxe030 f = rxe040 g = rxe050 h = rxe065 i = rxe075 j = rxe090 k = rxe110 l = rxe135 m = rxe160 n = rxe185 o = RXE250 p = rxe300 q = rxe375 rxe radial leaded 4 rxe(7) 1/15/99 11:44 am page 169
4 170 rxe devices raychem circuit protection devices rxe radial leaded 5. verify ambient operating conditions. ensure that your applications minimum and maximum ambient temperatures are within the operating temperature range of C40c and 85c. maximum device surface temperature in the tripped state is 125c. 6. verify the rxe devices dimensions. using dimensions from the table below, compare the dimensions of the rxe device you selected with the applications space considerations. product dimensions (millimeters/ inches ) part a b c d e f number max. max. typ. min. max. typ. rxe010 7.4 (0.29) 12.7 (0.50) 5.1 (0.20) 7.6 (0.30) 3.1 (0.12) 1.1 (0.04) rxe017 7.4 (0.29) 12.7 (0.50) 5.1 (0.20) 7.6 (0.30) 3.1 (0.12) 1.6 (0.06) rxe020 7.4 (0.29) 12.2 (0.48) 5.1 (0.20) 7.6 (0.30) 3.1 (0.12) 1.1 (0.04) rxe025 7.4 (0.29) 12.7 (0.50) 5.1 (0.20) 7.6 (0.30) 3.1 (0.12) 1.1 (0.04) rxe030 7.4 (0.29) 13.0 (0.51) 5.1 (0.20) 7.6 (0.30) 3.1 (0.12) 1.1 (0.04) rxe040 7.6 (0.30) 13.5 (0.53) 5.1 (0.20) 7.6 (0.30) 3.1 (0.12) 1.1 (0.04) rxe050 7.9 (0.31) 13.7 (0.54) 5.1 (0.20) 7.6 (0.30) 3.1 (0.12) 1.1 (0.04) rxe065 9.7 (0.38) 14.5 (0.57) 5.1 (0.20) 7.6 (0.30) 3.1 (0.12) 1.1 (0.04) rxe075 10.4 (0.41) 15.2 (0.60) 5.1 (0.20) 7.6 (0.30) 3.1 (0.12) 1.1 (0.04) rxe090 11.7 (0.46) 15.8 (0.62) 5.1 (0.20) 7.6 (0.30) 3.1 (0.12) 1.1 (0.04) rxe110 13.0 (0.51) 18.0 (0.71) 5.1 (0.20) 7.6 (0.30) 3.1 (0.12) 1.4 (0.06) rxe135 14.5 (0.57) 19.6 (0.77) 5.1 (0.20) 7.6 (0.30) 3.1 (0.12) 1.4 (0.06) rxe160 16.3 (0.64) 21.3 (0.84) 5.1 (0.20) 7.6 (0.30) 3.1 (0.12) 1.4 (0.06) rxe185 17.8 (0.70) 22.9 (0.90) 5.1 (0.20) 7.6 (0.30) 3.1 (0.12) 1.4 (0.06) RXE250 21.3 (0.84) 26.4 (1.04) 10.2 (0.40) 7.6 (0.30) 3.1 (0.12) 1.4 (0.06) rxe300 24.9 (0.98) 30.0 (1.18) 10.2 (0.40) 7.6 (0.30) 3.1 (0.12) 1.4 (0.06) rxe375 28.5 (1.12) 33.5 (1.32) 10.2 (0.40) 7.6 (0.30) 3.1 (0.12) 1.4 (0.06) lead size rxe010Crxe090 ? 0.51 (0.020) 24 awg rxe110Crxe375 ? 0.81 (0.032) 20 awg rxe010Crxe090* rxe110Crxe375** a b d c e marking f c l c l c l c l a b d c e marking f c l c l c l c l * straight leads are available. ** kinked leads are available. rxe(7) 1/15/99 11:44 am page 170
4 raychem circuit protection devices rxe devices 171 rxe product data now that you have selected your rxe device, please review the devices characteristics in this section to verify that the device will perform as required. electrical characteristics (20c) max. time initial resistance post-trip resistance part i h i t to trip (s) p d r min. r max. r 1 max . number (a) (a) at 5 x i h (w) ( )( )( ) rxe010 0.10 0.20 4.0 0.38 2.50 4.50 7.50 rxe017 0.17 0.34 3.0 0.48 3.30 5.21 8.00 rxe020 0.20 0.40 2.2 0.41 1.83 2.75 4.40 rxe025 0.25 0.50 2.5 0.45 1.25 1.95 3.00 rxe030 0.30 0.60 3.0 0.49 0.88 1.33 2.10 rxe040 0.40 0.80 3.8 0.56 0.55 0.86 1.29 rxe050 0.50 1.00 4.0 0.77 0.50 0.77 1.17 rxe065 0.65 1.30 5.3 0.88 0.31 0.48 0.72 rxe075 0.75 1.50 6.3 0.92 0.25 0.40 0.60 rxe090 0.90 1.80 7.2 0.99 0.20 0.31 0.47 rxe110 1.10 2.20 8.2 1.50 0.15 0.25 0.38 rxe135 1.35 2.70 9.6 1.70 0.12 0.19 0.30 rxe160 1.60 3.20 11.4 1.90 0.09 0.14 0.22 rxe185 1.85 3.70 12.6 2.10 0.08 0.12 0.19 RXE250 2.50 5.00 15.6 2.50 0.05 0.08 0.13 rxe300 3.00 6.00 19.8 2.80 0.04 0.06 0.10 rxe375 3.75 7.50 24.0 3.20 0.03 0.05 0.08 i h = hold currentmaximum current at which the device will not trip at 20c. i t = trip currentminimum current at which the device will always trip at 20c. p d = typical power dissipationtypical amount of power dissipated by the device when in tripped state in 20c still air. r min. = minimum device resistance at 20c prior to tripping. r max. = maximum device resistance at 20c prior to tripping. r 1 max. = maximum device resistance at 20c measured 1 hour post trip. physical characteristics lead material rxe010: tin coated nickel-copper alloy, 24 awg, ? 0.51 mm/0.020 in rxe017C040: tin/lead-plated copper-clad steel, 24 awg, ? 0.51 mm/0.020 in rxe050C090: tin/lead-plated copper, 24 awg, ? 0.51 mm/0.020 in rxe110C375: tin-plated copper, 20 awg, ? 0.81 mm/0.032 in soldering characteristics solderability per mil-std-202, method 208e solder heat withstand per mil-std-202, method 210, condition b insulating material cured, flame-retardant epoxy polymer; meets ul 94v-o requirements rxe radial leaded note: devices are not designed to be placed through a reflow process. rxe(7) 1/15/99 11:44 am page 171
4 172 rxe devices raychem circuit protection devices rxe radial leaded agency recognitions ul file # e74889 csa file # ca78165c tu v certificate # r9477354 environmental specifications test test method conditions resistance change passive aging raychem ps300 70c, 1000 hours 5% 85c, 1000 hours 5% humidity aging raychem ps300 85c, 85% r.h., 1000 hours 5% thermal shock raychem ps300 125c, C55c (10 times) 5% solvent resistance raychem ps300, method 215 mil-std-202, method 215f no change component layouts the dimensions in the table below provide the component layout for each rxe device. component layout dimensions (millimeters/ inches ) ab device nom. max. rxe010 5.1 (0.20) 1.0 (0.04) rxe017 5.1 (0.20) 1.7 (0.07) rxe020 5.1 (0.20) 1.0 (0.04) rxe025 5.1 (0.20) 1.0 (0.04) rxe030 5.1 (0.20) 1.0 (0.04) rxe040 5.1 ( 0.20) 1.2 (0.05) rxe050 5.1 (0.20) 1.2 (0.05) rxe065 5.1 (0.20) 1.5 (0.06) rxe075 5.1 (0.20) 1.5 (0.06) rxe090 5.1 (0.20) 1.5 (0.06) rxe110 5.1 (0.20) 1.2 (0.05) rxe135 5.1 (0.20) 1.2 (0.05) rxe160 5.1 (0.20) 1.5 (0.06) rxe185 5.1 (0.20) 1.5 (0.06) RXE250 10.2 (0.40) 1.7 (0.07) rxe300 10.2 (0.40) 2.0 (0.08) rxe375 10.2 (0.40) 2.0 (0.08) a b b rxe(7) 1/15/99 11:44 am page 172
4 raychem circuit protection devices rxe devices 173 tape and reel specifications (dimensions in millimeters) product availability: rxe010Crxe185 devices taped using eia468Cb/iec286-2 standards. see table below and figures 1 and 2 for details. dimension eia iec dimensions description mark mark dim. (mm) tol. (mm) carrier tape width w w 18 C0.5/+1.0 hold down tape width w 4 w 0 11 min. top distance between tape edges w 6 w 2 3 max. sprocket hole position w 5 w 1 9 C0.5/+0.75 sprocket hole diameter* d 0 d 0 4 C0.32/+0.2 abscissa to plane (straight lead) h h 18.5 3.0 abscissa to plane (kinked lead) h 0 h 0 16 0.5 abscissa to top: rxe010-rxe090 h 1 h 1 32.2 max. abscissa to top: rxe110-rxe185* h 1 h 1 37.6 max. overall width w/lead protrusion: rxe10-rxe90 c 1 43.2 max. overall width w/o lead protrusion: rxe135-rxe185* c 2 46.6 max. lead protrusion l 1 i 1 1.0 max. protrusion of cutout l l 11 max. protrusion beyond hold-down tape l 2 l 2 not specified sprocket hole pitch: rxe010-rxe090 p 0 p 0 12.7 0.3 sprocket hole pitch* p 0 p 0 25.5 0.5 pitch tolerance 20 consec. 1 device pitch: rxe010-rxe090 12.7 device pitch: rxe110-rxe185 25.4 tape thickness t t 0.9 max. tape thickness with splice t 1 2.0 max. splice sprocket hole alignment 0 0.3 body lateral deviation d h d h 0 1.0 body tape plane deviation d p d p 0 1.3 ordinate to adjacent component lead* p 1 p 1 3.81 1.0 lead spacing* f f 5.08 0.8 reel width: rxe090-rxe135* w 2 w 56 max. reel width: rxe160-rxe185* w 2 w 63.5 max. reel diameter a d 370 max. space between flanges less device* w 1 4.75 -3.25/+9.25 arbor hole diameter cf 26 12.0 core diameter* n h 91 max. box 56/372/372 max. consecutive missing places none empty places per reel 0.1% max. * differs from eia specification. rxe radial leaded rxe(7) 1/15/99 11:44 am page 173
4 174 rxe devices raychem circuit protection devices rxe radial leaded w 4 h 0 h 1 p 1 d 0 p 0 ab i 2 l 1 f reference plane direction of unreeling cross section a - b d h d h l t w 5 h 1 w h d p d p c 1 c 2 figure 1: eia referenced taped component dimensions n c cross section optional shape: circular or polygonal reel upper side lower side a w 2 w 1 tape direction of unreeling figure 2: reel dimensions rxe(7) 1/15/99 11:44 am page 174
4 raychem circuit protection devices rxe devices 175 ordering information product bag tape and reel ammo standard description quantity quantity pack package rxe010 500 10000 rxe010-2 3000 15000 rxe010-ap 2000 10000 rxe017 500 10000 rxe017-2 2500 12500 rxe017-ap 1500 7500 rxe020 500 10000 rxe020-2 3000 15000 rxe020-ap 2000 10000 rxe025 500 10000 rxe025-2 3000 15000 rxe025-ap 2000 10000 rxe030 500 10000 rxe030-2 3000 15000 rxe030-ap 2000 10000 rxe040 500 10000 rxe040-2 3000 15000 rxe040-ap 2000 10000 rxe050 500 10000 rxe050-2 3000 15000 rxe050-ap 2000 10000 rxe065 500 10000 rxe065-2 3000 15000 rxe065-ap 2000 10000 rxe075 500 10000 rxe075-2 3000 15000 rxe075-ap 2000 10000 rxe090 500 10000 rxe090-2 3000 15000 rxe090-ap 2000 10000 rxe0110 500 10000 rxe110-2 1500 7500 rxe110-ap 1000 5000 rxe135 500 10000 rxe135-2 1500 7500 rxe135-ap 1000 5000 rxe160 500 10000 rxe160-2 1500 7500 rxe160-ap 1000 5000 rxe185 500 10000 rxe185-2 1500 7500 rxe185-ap 1000 5000 RXE250 500 * * 10000 rxe300 500 * * 10000 rxe375 500 * * 10000 * consult factory rxe radial leaded rxe(7) 1/15/99 11:44 am page 175
4 176 rxe devices raychem circuit protection devices part numbering system rxe suffix blank = bulk packaged - 2 = tape and reel - ap = ammo pack - 1 = 25.4-mm (1.0 inch) minimum lead length k = kinked leads s = straight leads current rating part marking system v 60 voltage rating raychem symbol x part id product family (rxe) lot number/date code (may be on the back) example v 60 x185 v nk8c v v rxe radial leaded ? operation beyond maximum ratings or improper use may result in device damage and possible electrical arcing and flame. ? these devices are intended for protection against occasional over- current or overtemperature fault conditions, and should not be used when repeated fault conditions are anticipated. warning: part part description id rxe010 010 rxe017 017 rxe020 020 rxe025 025 rxe030 030 rxe040 040 rxe050 050 rxe065 065 rxe075 075 rxe090 090 rxe110 110 rxe135 135 rxe160 160 rxe185 185 RXE250 250 rxe300 300 rxe375 375 rxe(7) 1/15/99 11:44 am page 176

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