Document 1101-1 Current Sense Transformers CST7030 • • • • • • AEC-Q200 Grade 1 qualified (–40°C to +125°C ambient) Small surface mount current sensors Sensed current up to 20 A; Frequency range up to 1 MHz Very low primary DC resistance 500 Vrms, one minute isolation (hipot) between windings Designed for: Continuous AC current monitoring in switched-mode power supply; Overload and short-circuit protection; Current measurement in traction motor and battery management systems in conventional and xEV (EV, HEV, FCEV) vehicles. • Can also be used in 48 V vehicle electrical systems DCR max (Ohms) Turns (N) Inductance2 Part number1 pri : sec min (mH) pri sec CST7030-020L_ 1 : 20 0.053 0.0015 0.420 CST7030-050L_ 1 : 50 0.333 0.0015 2.76 CST7030-070L_ 1 : 70 0.652 0.0015 5.04 CST7030-100L_ 1 : 100 1.330 0.0015 10.68 CST7030-150L_ 1 : 150 2.993 0.0015 22.30 1. When ordering, please specify packaging code: CST7030-150LC Packaging: C = 7″ machine-ready reel. EIA-481 embossed plastic tape (600 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 C instead. D = 13″ machine-ready reel. EIA-481 embossed plastic tape. Factory order only, not stocked (2500 parts per full reel). 2. Inductance measured between secondary pins at 100 kHz, 0.1 Vrms, 0 Adc. 3. Maximum volt-time product is for the secondary, based on 2000 Gauss. 4. Primary current of 20 A causes less than 25°C temperature rise from 25°C ambient. Higher current causes a greater temperature rise (see Temperature Rise vs Current curve). 5. Terminating resistance (RT) value is based on 1 Volt output with 20 Amps flowing through the primary. Varying terminating resistance increases or decreases output Voltage/Ampere according to the following equation: RT = Vout × Nsec / Iin. 6 Electrical specifications at 25°C. Refer to Doc 362 “Soldering Surface Mount Components” before soldering. Frequency range (kHz) 78 – 1000 31 – 1000 22 – 1000 16 – 1000 10 – 1000 Volt-time product3 (Vµsec) 6.4 16.0 22.4 32.0 48.0 Sensed current Iin4 max (A) 20 20 20 20 20 Terminating RT5 (Ohms) 1.0 2.5 3.5 5.0 7.5 resistance Typical Circuit I in 4 2 Pri (1 turn) Sec (N turns) 3 1 RT Vout Core material Ferrite Terminations RoHS compliant tin-silver over tin over nickel over phos bronze Weight 0.16 g Ambient temperature –40°C to +125°C Maximum part temperature +165°C (ambient + temp rise) Storage temperature Component: –40°C to +125°C. Tape and reel packaging: –40°C to +80°C Resistance to soldering heat Max three 40 second reflows at +260°C, parts cooled to room temperature between cycles Moisture Sensitivity Level (MSL) 1 (unlimited floor life at <30°C / 85% relative humidity) Failures in Time (FIT) / Mean Time Between Failures (MTBF) 38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332 Packaging 600/7″ reel; 2500/13″ reel Plastic tape: 16 mm wide, 0.35 mm thick, 8 mm pocket spacing, 3.0 mm pocket depth PCB washing Tested to MIL-STD-202 Method 215 plus an additional aqueous wash. See Doc787_PCB_Washing.pdf. [email protected] subject to change without notice. US +1-847-639-6400 Please check [email protected] our website for latest information. UK +44-1236-730595 Taiwan +886-2-2264 3646 [email protected] China +86-21-6218 8074 [email protected] Singapore + 65-6484 8412 [email protected] Document 1101-1 Revised 06/24/15 © Coilcraft Inc. 2016 This product may not be used in medical or high risk applications without prior Coilcraft approval. Specification subject to change without notice. Please check web site for latest information. Document 1101-2 CST7030 SMT Current Sense Transformers Temperature Rise vs Current 45 Temperature rise (from 25°C) 40 35 30 25 20 15 10 5 0 0 5 10 15 20 25 30 Current (A rms) Dimensions 0.118 max 3,0 0.118 3,0 0.006 /0,15 0.276 max 7,0 0.205 5,2 max 0.010 0,25 0.043 1,1 Recommended Land Pattern 0.030 0,75 0.047 1,2 1 2 3 0.102 2,60 4 1 0.043 1,1 0.047 1,2 0.043 1,1 0.073 1,85 CL 0.073 1,85 2 0.191 4,85 Dimensions are in 0.067 1,70 0.063 1,6 0.063 1,6 4 0.063 0.063 1,6 1,6 3 0.045 1,15 0.045 1,15 0.191 4,85 inches mm US +1-847-639-6400 [email protected] UK +44-1236-730595 [email protected] Taiwan +886-2-2264 3646 [email protected] China +86-21-6218 8074 [email protected] Singapore + 65-6484 8412 [email protected] Document 1101-2 Revised 06/24/15 © Coilcraft Inc. 2016 This product may not be used in medical or high risk applications without prior Coilcraft approval. Specification subject to change without notice. Please check web site for latest information.