Coilcraft, Inc. CST1, CST2 – High Frequency SMT Current Sense Transformers CST2-030L CST2-030LC

CST2-030L and CST2-030LC are surface-mount current sense transformers for high-frequency applications up to 1 MHz and above, with a 1:30 turns ratio and a primary current rating of 20 A. The part features a ferrite core, 500 Vrms isolation between windings, and RoHS-compliant tin-silver over tin over nickel over phosphor bronze terminations on pins 1-6 and matte tin over nickel over copper on pins 7-8. It operates from -40°C to +125°C ambient, with a maximum part temperature of 165°C, and meets AEC-Q200 Grade 1 requirements. The package is a single surface-mount footprint with pinouts designed for PCB mounting, weighing 0.4 g. Tape-and-reel packaging is available in 250 or 1000-piece reels, and the part is rated MSL 1. Temperature rise at 20 A is approximately 40°C from 25°C ambient. Two samples of each value are included in Coilcraft Designer's Kit C389.