
STx21N90K5 Electrical ratings
Doc ID 16744 Rev 5 3/21
1 Electrical ratings
Table 2. Absolute maximum ratings
Symbol Parameter
Value
Unit
D2PAK,
TO-220, TO-247 TO-220FP
VGS Gate- source voltage ± 30V
IDDrain current (continuous) at TC = 25 °C 18.5 18.5(1)
1. Limited by package.
A
IDDrain current (continuous) at TC = 100 °C 11.6 11.6 (1) A
IDM (2)
2. Pulse width limited by safe operating area.
Drain current (pulsed) 74 74 (1) A
PTOT Total dissipation at TC = 25 °C 250 40 W
IAR
Max current during repetitive or single
pulse avalanche
(pulse width limited by Tjmax )
6A
EAS
Single pulse avalanche energy
(starting TJ = 25 °C, ID=IAR, VDD= 50 V) 200 mJ
Viso
Insulation withstand voltage (RMS) from
all three leads to external heat sink
(t=1 s;TC=25 °C)
2500 V
dv/dt (3)
3.I
SD ≤ 18.5 A, di/dt ≤ 100 A/µs, VPeak ≤ V(BR)DSS
Peak diode recovery voltage slope 6 V/ns
Tj
Tstg
Operating junction temperature
Storage temperature -55 to 150 °C
Table 3. Thermal data
Symbol Parameter
Value
Unit
D²PAK TO-220FP TO-220 TO-247
Rthj-case Thermal resistance junction-case max 0.5 3.130.5
°C/WRthj-amb Thermal resistance junction-amb max 62.5 50
Rthj-pcb Thermal resistance junction-pcb max 30