? coilcraft, inc. 2010 specifications subject to change without notice. please check our website for latest information. document 372-1 document 372-1 revised 10/31/08 transformer 1. when ordering, please specify packaging code: b0357-bl d packaging: d =13 machine ready reel. eia-481 embossed plastic tape (200 parts per full reel). b = less than full reel. in tape, but not machine ready. to have a leader and trailer added ($25 charge), use code letter d instead. 2. inductance measured on an agilent/hp 4284 between pins 1 and 2 at 250 khz, 0.1 vrms, 0 adc. output primary leakage pri/sec part output output current inductance 2 inductance 3 dcr max isolation number 1 power (w) voltage (v) (a rms) min (h) max (h) (mohms) (vdc) b0357-bl_ 100 3.3 30.0 320.0 0.55 primary: 55.0 1500 secondary: 1.0 1 2 4 3 pri 12 : 2 sec 0.800 20,32 recommended land pattern 0.200 5,08 0.125 3,18 0.250 6,35 0.400 10,16 ? 0.110 2,79 ? 0.080 2,03 0.360 9,14 max 0.810 20,57 max 0.920 23,37 max 0.006 /0,15 1 3 2 4 1 3 2 4 planar magnetics for national semiconductor lm5025 and lm5034 this planar transformer and planar inductor pair is de- signed specifically for the national semiconductor lm5110 gate driver and lm5025 active clamp voltage mode pwm controller. these parts are also specified by nsc for use with their lm5034 dual interleaved controller. the b0357-b transformer is engineered for use in high current telecom power supply applications that require high e fficiency in a low-profile package. the main winding of the b0358-cl inductor serves as an output choke, while the auxiliary winding controls input current to the pwm. request free evaluation samples by contacting coilcraft or visiting www.coilcraft.com. weight: 11.3 g terminations: matte tin over nickel over brass tape and reel: 200/13 reel 44 mm tape width 3. leakage inductance measured between pins 1 and 2 at 100 khz, 0.1 vrms, 0 adc with secondary pins shorted. 4. ambient temperature range: ? 40c to +85c 5. storage temperature range: component: ? 40c to +85c packaging: ? 40c to +80c 6. resistance to soldering heat: three reflows at >217c for 90 seconds (+260c 5c for 20 ? 40 seconds), allowing parts to cool to room temperature between. 7. electrical specifications at 25c.
? coilcraft, inc. 2010 planar magnetics for nsc lm5025 and lm5034 specifications subject to change without notice. please check our website for latest information. document 372-2 document 372-2 revised 10/31/08 output inductor 1. when ordering, please specify packaging code: b0358-cl d packaging: d =13 machine ready reel. eia-481 embossed plastic tape (200 parts per full reel). b = less than full reel. in tape, but not machine ready. to have a leader and trailer added ($25 charge), use code letter d instead. 2. inductance measured on an agilent/hp 4284 between pins 3 and 4 at 250 khz, 0.1 vrms. 3. isolation measured from pin 1 to pin 3. inductance 2 part at 0 adc dcr max isolation 3 i sat 4 i rms 5 number 1 (h) (mohms) (vdc) (a) (a) b0358-cl_ 2.0 10% main: 2.0 1500 32 36 aux: 900.0 0.360 9,14 max 0.810 20,57 max 0.920 23,37 max 0.006 /0,15 0.800 20,32 recommended land pattern 0.310 7,87 0.310 7,87 0.250 6,35 0.250 6,35 ? 0.110 2,79 ? 0.080 2,03 1 3 2 4 1 3 2 4 4 3 1 2 main 4t aux 13t typical l vs frequency typical l vs current 0.01 0.1 1 10 100 0.01 0.1 10 1 frequency (mhz) inductance (h) 0.01 0.1 1 10 100 0.1 1 100 10 current (a) inductance (h) weight: 11.7 g terminations: matte tin over nickel over brass tape and reel: 200/13 reel 44 mm tape width 4. dc current at which inductance drops 10% (typ) from its value without current. 5. current that causes a 40c temperature rise from 25c ambient. 6. ambient temperature range: ? 40c to +85c 7. storage temperature range: component: ? 40c to +85c packaging: ? 40c to +80c 8. resistance to soldering heat: three reflows at >217c for 90 seconds (+260c 5c for 20 ? 40 seconds), allowing parts to cool to room temperature between. 9. electrical specifications at 25c.
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