RATINGS AND CHARACTERISTIC CURVES SMAJ5.0 THRU SMAJ188CA
Fig. 1Ð P eak P uls e P ower R ating C ur ve
P eak P uls e P ower (P
P P
) or C urrent (I
P P M
)
Derating in P ercentage, %
100
100
Fig. 2Ð P uls e Derating C urve
P eak P uls e P ower (kW)
Non-repetitive P uls e
Waveform s hown in F ig. 3
o
T
A
= 25 C
10
75
S MAJ 85 --
S MAJ 188
1
S MAJ 5.0 --
S MAJ 78
50
P
PPM ,
25
0.2 x 0.2" (5.0 x 5.0mm)
C opper P ad Areas
0
0
25
50
75
100
125
150
175
200
0.2 x 0.2" (5.0 x 5.0mm)
C opper P ad Areas
0.1
0.1 s
μ
1.0
μ
s
1 0
μ
s
100
μ
s
1.0ms
10ms
t
d
,
P uls e Width (s ec.)
T
A
,
Ambient Temperature ( C )
Fig. 3Ð P uls e Waveform
150
Fig. 4Ð Typical J unction C apacitance
10,000
P eak P uls e C urrent, % I
R S M
100
P eak Value
I
P P M
J unction C apacitance (pF )
tr = 10
μ
S
T
J
= 25 C
P uls e Width (td)
is defined as the point
where the peak current
decays to 50% of I
P P M
o
T
J
= 25 C
f = 1.0MHz
V s ig = 50mV p-p
1,000
Meas ured at
S tand-Off
Voltage, V
WM
Uni-Directional
100
o
Half Value
I
P P M
50
IP P
2
I
P P M ,
td
0
0
1.0
2.0
3.0
4.0
10
1
10
100
200
C
J
,
10/1000
μ
S W aveform
as defined by R .E .A.
B i-Directional
t,
Time (ms )
V
WM
,
R evers e S tand-off Voltage (V )
F ig. 5ÐT ypic al Trans ient T hermal
Impedanc e
P eak F orward S urge C urrent (A)
1000
F ig. 6 - Maximum Non-R epetitive F orwar d
S urge C urrent Uni-Direc tional Onl y
200
T
J
= T
J
max.
8.3ms S ingle Half S ine-Wave
(J E DE C Method)
Trans ient T hermal Impedance (
o
C /W)
100
100
50
10
I
F S M
,
0.01
0.1
1
10
100
1000
1
0.001
10
1
5
10
50
100
t
p
,
P uls e Duration (s ec)
Number of C ycles at 60 Hz
DAESAN [ DAESAN ELECTRONICS CORP. ]
