Web Sample Tools & Support Document 385-1 page & buy software & FAQ Current Sense Transformers CST1, CST2 For use up to 1 MHz AEC + Q200 125C AEC-Q200 Grade 1 (40C to +125C) Two pinouts to meet the requirements of different applications. Low primary DC resistance 500 Vrms, one minute isolation (hipot) between windings. Designers Kit C389 contains 2 each of each part Core material Ferrite Terminations See Note 1. Weight 0.4 g 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 250/7reel 1000/13 reel Plastic tape: 16 mm wide, 0.35 mm thick, 12 mm pocket spacing, 5.6 mm pocket depth PCB washing Tested to MIL-STD-202 Method 215 plus an additional aqueous wash. See Doc787 PCB Washing.pdf. DCR ( ) Ohms Turns Frequency Volt-time Sensed Terminating 1 Part number 2 3 4 5 (N) Inductance Pri Sec range product current I resistance R Color in T CST1 CST2 pri : sec min (H) ref max (kHz) (V-sec) max (A) (Ohms) dot CST1-020L CST2-020L 1 : 20 81 0.0007 0.400 46 1000 10.8 20 1.0 Red CST1-030L CST2-030L 1 : 30 180 0.0007 0.870 31 1000 16.2 20 1.5 Orange CST1-040L CST2-040L 1 : 40 320 0.0007 1.14 23 1000 21.6 20 2.0 Yellow CST1-050L CST2-050L 1 : 50 500 0.0007 1.50 19 1000 27.0 20 2.5 Green CST1-060L CST2-060L 1 : 60 730 0.0007 1.98 15 1000 32.4 20 3.0 Blue CST1-070L CST2-070L 1 : 70 980 0.0007 4.75 13 1000 37.8 20 3.5 Violet CST1-100L CST2-100L 1 : 100 2000 0.0007 5.50 9 1000 54.0 20 5.0 Gray CST1-125L CST2-125L 1 : 125 3000 0.0007 6.50 7 1000 67.5 20 6.3 Black 1. When ordering, please specify termination and packaging codes: 5. Terminating resistance (R ) value is based on 1 Volt output with T 20 Amps flowing through the primary. Varying terminating resistance CSTX-125LC increases or decreases output Voltage/Ampere according to the fol- lowing equation: R (Ohms) = V N / I T out sec in. Termination: L = RoHS compliant tin-silver over tin over nickel over phos 6. Electrical specifications at 25C. bronze (pins 1 6) RoHS compliant matte tin over Refer to Doc 362 Soldering Surface Mount Components before soldering. nickel over copper (pins 7 8) Special order: S = non-RoHS tin-lead (63/37) over tin over nickel over phos bronze (pins 1 6) non-RoHS CST1 tin-lead over gold over nickel over copper (pins 7 8). 8 6+ Packaging: C = 7 machine-ready reel. EIA-481 embossed plastic tape (250 parts per full reel). Quantities less than full reel available: in tape (not machine ready) or with Pri Sec leader and trailer ( 25 charge). I I in out R V T out (1 turn) (N turns) D = 13 machine-ready reel. EIA-481 embossed plastic tape. Factory order only, not stocked (1000 parts per full reel). 7 4 B = Less than full reel. In an effort to simplify our part numbering system, Coilcraft is eliminating the need for multiple packaging codes. When ordering, simply CST2 change the last letter of your part number from B to C. 8 1 + 2. Inductance measured between secondary pins at 100 kHz, 0.1 Vrms. 3. Volt-time product is for the secondary, between pin 6 and 4 for CST1 and between pin 1 and 3 for CST2. Pri Sec 4. Primary current of 20 A causes approximately 40C temperature rise I I in out R V T out (1 turn) (N turns) from 25C ambient. Higher current causes a greater temperature rise (see Temperature Rise vs Current curve). 7 3 Specifications subject to change without notice. Document 385-1 Revised 04/29/21 US +1-847-639-6400 sales coilcraft.com Please check our website for latest information. 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 385-2 CST Series Current Sense Transformers Temperature Rise vs Current Pinouts 40 CST1 CST2 35 8 7 AEC + Q200 125C 30 3 4 3 4 25 20 1 6 1 6 15 10 7 8 BottomView BottomView 5 0 082 4 6110 2 14 16 18 20 Current (Arms) Dimensions RecommendedLandPattern inches Dimensions are in mm Document 385-2 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)