Littelfuse SIDACtor Series TO-92 - Manual (Page 3)

SIDACtor ® Protection Thyristors
160
Revised: February 22, 2011
© 2011 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com for current information.
Baseband Protection (Voice-DS1)
I
H
I
T
I
S
I
DRM
V
DRM
V
T
+V -V
+I
-I
V
S
50
100
0
t
r
t
d
0
Peak
Value
Half Value
t – Time (μs)
I PP
– P
eak Pulse Current – %I
PP
t
r
= rise time to peak value
t
d
= decay time to half value
Waveform = t
r x t d
V-I Characteristics t
r
x t
d
Pulse Waveform
25°C
Case Temperature (T
C
) - ºC
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
-40 -20 0 20 40 60 80 100 120 140 160
R
atio of
I H
I H
(T
C
= 2
5
ºC)
Normalized V
S
Change vs. Junction Temperature Normalized DC Holding Current vs. Case Temperature
-8
-40 -20 0 20 40 60 80 100 120 140 160
-6
-4
0
2
4
6
8
10
12
14
Junction Temperature (T
J
) – °C
P
ercent of
V
S
Change – % 25 °C
Soldering Parameters
Time
Temper
at
ur
e
T
P
T
L
T
S(max)
T
S(min)
25
t
P
t
L
t
S
time to peak temperature
(t 25ºC to peak)
Ramp-down
Ramp-up
Preheat
Critical Zone
T L to T P
Figure 1
Reflow Condition
Pb-Free assembly
(see Fig. 1)
Pre Heat
- Temperature Min (T
s(min)
) ¡$
- Temperature Max (T
s(max)
) ¡$
- Time (Min to Max) (t
s
) 60-180 secs.
Average ramp up rate (Liquidus Temp (T
L
)
to peak)
3°C/sec. Max.
T
S(max)
to T
L
- Ramp-up Rate 3°C/sec. Max.
Reflow
- Temperature (T
L
) (Liquidus) ¡$
- Temperature (t
L
) 60-150 secs.
Peak Temp (T
P
)  
¡$
Time within 5°C of actual Peak Temp (t
p
) 30 secs. Max.
Ramp-down Rate 6°C/sec. Max.
Time 25°C to Peak Temp (T
P
) 8 min. Max.
Do not exceed ¡$