100V, 56A N-channel — the D-Pak workhorse for motor-drive and DC-DC stages
The IRFR4510TRPBF: It targets the 48V–72V bus range common in e-bike controllers, telecom DC-DC converters, and industrial 24V–48V motor drives where the 100V drain-source voltage gives headroom for inductive load transients. The 13.9 mOhm maximum Rds(on) at Vgs=10V and 38A sets the conduction loss floor — at 56A the I²R loss hits 43W, which the 143W package power dissipation can handle with adequate PCB copper area and airflow.
Gate charge and switching — 81 nC at 10V gate drive
Total gate charge Qg is 81 nC at 10V gate drive. The 3031 pF input capacitance at 50V Vds is the Miller plateau capacitance the driver sees during the switching transition. The ±20V maximum gate-source voltage gives margin above the 10V recommended drive level, but the 4V threshold at 100 µA means the device is fully enhanced only above 6V — never run it at 5V gate drive and expect the rated Rds(on).
175°C junction — rated for under-hood and industrial thermal cycling
The -55°C to 175°C junction temperature range qualifies this part for under-hood automotive and industrial drives in non-conditioned enclosures. The 175°C TJ(max) is the hard ceiling for die temperature. ROHS3 compliant, so it qualifies for EU RoHS and China RoHS markets without exemption paperwork.
D-Pak footprint — tab soldered to copper pour
The TO-252-3 D-Pak package has two source leads and a drain tab. The tab is the primary thermal path — the PCB footprint must include a copper pour area under the tab to keep the junction temperature below 175°C at full load.