Document 915-1 Current Sense Transformers CST4835 Halogen AEC-Q200 Grade 1 (40C to +125C) Free Miniature SMT design, only 4.5 4.8 mm footprint 500 Vrms, one minute isolation (hipot) between windings Designed for use up to 1 MHz to sense continuous currents to 7 Amps Core material Ferrite AEC + Environmental RoHS compliant, halogen free Q200 125C Terminations RoHS compliant tin-silver over tin over nickel over cop- per (pins 2 1) RoHS compliant tin over nickel over copper (pins 4 3) Weight 115 122 mg Ambient temperature 40C to +125C Maximum part temperature +165C (ambient + temp rise) Storage temperature Component: 40C to +165C Tape and reel Packaging: 40C to +80C Resistance to soldering heat Max three 40 second reflows at +260C, parts cooled to room temperature between cycles Moisture Sensitivity Level (MSL) 1 (unlimited floor life at <30C / 85% relative humidity) Failures in Time (FIT) / Mean Time Between Failures (MTBF) 10.06 per billion hours / 9.940E+07 hours, calculated per Telcordia SR-332 Packaging 500/7 reel 2200/13 reel Plastic tape: 12 mm wide, 0.35 mm thick, 8 mm pocket spacing, 3.6 mm pocket depth PCB washing Tested to MIL-STD-202 Method 215 plus an additional aqueous wash. See Doc787 PCB Washing.pdf. DCR max Frequency Volt-time Sensed Terminating (Ohms) 2 3 4 5 Turns (N) Inductance range product current I resistance R in T 1 Part number pri : sec min (H) pri sec (kHz) (Vsec) max (A) (Ohms) CST4835-020E 1 : 20 33 0.003 0.35 83 1000 6.0 7 2.9 CST4835-030E 1 : 30 74 0.003 0.90 56 1000 9.0 7 4.3 CST4835-040E 1 : 40 132 0.003 1.60 42 1000 12.0 7 5.7 CST4835-050E 1 : 50 205 0.003 2.50 33 1000 15.0 7 7.1 CST4835-060E 1 : 60 295 0.003 3.60 28 1000 18.0 7 8.6 CST4835-070E 1 : 70 400 0.003 4.60 24 1000 21.0 7 10.0 CST4835-100E 1 : 100 820 0.003 9.50 17 1000 30.0 7 14.3 CST4835-125E 1 : 125 1280 0.003 13.0 13 1000 37.5 7 17.9 CST4835-150E 1 : 150 1800 0.003 21.0 11 1000 45.0 7 21.4 1. When ordering, please specify packaging code: 5. Terminating resistance (R ) value is based on 1 Volt output with 7 Amps T flowing through the primary. Varying terminating resistance increases or CST4835-150EC decreases output Voltage/Ampere according to the following equation: R = V N / I Packaging: C = 7 machine-ready reel. EIA-481 embossed plastic T out sec in. tape (500 parts per full reel). Quantities less than full 6 Electrical specifications at 25C. reel available: in tape (not machine ready) or with Refer to Doc 362 Soldering Surface Mount Components before soldering. leader and trailer ( 25 charge). B = Less than full reel. In an effort to simplify our part numbering system, Coilcraft is eliminating the need 4 1 for multiple packaging codes. When ordering, simply change the last letter of your part number from B to C. D = 13 machine-ready reel. EIA-481 embossed plastic Pri Sec I I tape (2200 parts per full reel). R V in out T out (1 turn) (N turns) 2. Inductance measured between secondary pins at 100 kHz, 0.1 Vrms, 0 Adc. 3. Volt-time product is for the secondary, between pin 1 and 2. 3 2 + 4. Primary current of 7 A causes less than 25C temperature rise from 25C ambient. Higher current causes a greater temperature rise (see Temperature Rise vs Current curve). Document 915-1 Revised 04/29/21 US +1-847-639-6400 sales coilcraft.com UK +44-1236-730595 sales coilcraft-europe.com Coilcraft Inc. 2021 This product may not be used in medical or high Taiwan +886-2-2264 3646 sales coilcraft.com.tw risk applications without prior Coilcraft approval. China +86-21-6218 8074 sales coilcraft.com.cn Specification subject to change without notice. Singapore + 65-6484 8412 sales coilcraft.com.sg Please check web site for latest information.Document 915-2 CST4835 Series SMT Current Sense Transformers Temperature Rise vs Current XXXE X 50 45 Halogen Free Dash Internal 40 number code 0.189 0.177 35 * max max 4,8 4,5 30 0.150 0.028 0.138 AEC 3,8 0,7 3,5 + Q200 125C 25 20 0.138 max 3,5 15 3 2 1 2 0.016 0.002 10 0.104 0.010 0.002 0.039 0,40 0,05 2,65 0,25 0,05 0,98 5 0.165 0.008 0.098 4,20 0,20 2,5 0 08132 4 57619 10 11 2 0.033 Current (Arms) 0,85 0.049 1,25 1 4 0.135 3,425 2 3 Includes solder applied to side terminal. * Unless otherwise specified, tolerances 0.098 are 0.004 in/ 0,10 mm. 2,50 Recommended inches Land Pattern Dimensions are in mm Document 915-2 Revised 04/29/21 US +1-847-639-6400 sales coilcraft.com UK +44-1236-730595 sales coilcraft-europe.com Coilcraft Inc. 2021 This product may not be used in medical or high Taiwan +886-2-2264 3646 sales coilcraft.com.tw risk applications without prior Coilcraft approval. China +86-21-6218 8074 sales coilcraft.com.cn Specification subject to change without notice. Singapore + 65-6484 8412 sales coilcraft.com.sg Please check web site for latest information. Temperature rise (from 25C)