Another cool SiC part for HF amplifiers

I recently spotted the Tokmas CI7N170SM TO-247 part on LCSC. It seems like a pretty neat part for building non-QRP HF amplifiers! This could be a better part for our Baby QRO amplifier. Datasheet excerpts: The full datasheet is available here. In comparison, here is how a professional RF part (MRF300AN) looks like: That 272W maximum power dissipation figure is crazy good but switching characteristics are not that great (fast).

September 29, 2025 · 1 min · 70 words · Dhiru Kholia

Fast(est) gate drivers in the West

I recently found some FET gate drivers which are quite fast! Wuxi Maxinmicro MX1025D - Favorite! BD2311NVX-LBE2 from ROHM Semiconductor TI LMG1020 Tokmas LMG1020YFFR - https://www.lcsc.com/product-detail/C6423790.html They are perfect for driving the fast Tokmas GaN FETs that we recently discussed on this site. Our 'workhorse' gate driver for the recent experiments has been the Onsemi's NCP81074ADR2G in a friendly SOIC-8 package. And we have shifted to MX1025D gate driver in our latest amplifier designs. ...

June 3, 2025 · 1 min · 76 words · Dhiru Kholia