Datasheet SMAJ (Littelfuse) - 4

TVS Diodes
Surface Mount – 400W > SMAJ series
Ratings and Characteristic Curves (T =25°C unless otherwise noted) (Continued) A Figure 3 - Peak Pulse Power Derating Curve Figure 4 - Pulse Waveform
100% 150 tr=10µsec TJ=25°C
)
80% Pulse Width(td) is defined SMF5.0 ~ SMF100 I RSM
PP
as the point where the peak Peak Value current decays to 50% of IPPM
%
100 IPPM 60% rent, %
) or Current(I PP
Half Value I I PPM 40% ulse Cur PPM ( ) 2 eak P 50 10/1000µsec. Waveform
Derating in Percentage
as defined by R.E.A 20% - P
Peak Pluse Power(P
I PPM t 0% d 0 25 50 75 100 125 150 175 0 0 1.0 2.0 3.0 4.0 t-Time (ms)
T Initial Junction Temperature(˚C) J Figure 5 - Typical Junction Capacitance Figure 6 - Typical Transient Thermal Impedance
1000 10000 W) Uni-direconal V=0V (°C/ 1000 e 100 Bi-direconal V=0V nc da pe F) 10 100 l Im (p Cj erma Uni/Bi-direconal V=V t Th R 1 10 en si an Tr 0.1 1 0.001 0.01 0.1 1 10 100 1000 1 10 100 1000 T - Pulse Duration (s) P V - Reverse Breakdown Voltage (V) BR
Figure 7 - Maximum Non-Repetitive Forward Surge Figure 8 - Peak Forward Voltage Drop vs Peak Forward Current Uni-Directional Only Current (Typical Values)
70 100.0 Single die ) 60 (A nt ) (A 50 Stacked-die Curre nt 10.0 e rre rv 40 Su d Cu d ar ar rw rw 30 Fo Fo k ak ea 1.0 20 -P -Pe I F MIFS 10 0 0.1 1 10 100 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 Number of Cycles at 60 Hz V - Peak Forward Voltage(V) F © 2020 Littelfuse, Inc. Specifications are subject to change without notice. Revised: BA.10/21/20