600 V N-channel in a TO-220 – the STP25NM60ND
The STMicroelectronics STP25NM60ND is a 600 V N-channel power MOSFET from the FDmesh™ II series, built with a planar stripe layout that reduces on-resistance and gate charge.
Obsolete – no official successor listed
Date-code provenance matters here; when sourcing, request traceable stock from a known production window.
160 mOhm Rds(on) and 80 nC gate charge – the switching trade-off
The 80 nC gate charge is moderate for this voltage class – it keeps the driver burden manageable with a standard 1 A gate driver, but at switching frequencies above 100 kHz the 2400 pF input capacitance (at 50 V Vds) will dominate the transition losses. For a replacement search, look for a 600 V N-channel in TO-220 with Rds(on) at or below 160 mOhm and a similar gate charge profile.
