1
Preliminary Data Sheet I2144 11/97
PHASE CONTROL SCR
SAFE
IR
Series
12TTS08
V
T
< 1.2V @ 8A
I
TSM
= 140A
V
RRM
= 800V
Description/Features
The 12TTS08
SAFE
IR
series of silicon controlled
rectifiers are specifically designed for medium
power switching and phase control applications.
The glass passivation technology used has reli-
able operation up to 125 C junction temperature.
Typical applications are in input rectification and
crow-bar (soft start) and these products are
designed to be used with International Rectifier
input diodes, switches and output rectifiers which
are available in identical package outlines.
Major Ratings and Characteristics
TO-220AC
Capacitive input filter T
A
= 55C, T
J
= 125C,
13.5
17
A
common heatsink of 1C/W
Output Current in Typical Applications
Applications
Single-phase Bridge
Three-phase Bridge Units
I
T(AV)
Sinusoidal
8
A
waveform
I
T(RMS)
12.5
A
V
RRM
/
V
DRM
800
V
I
TSM
140
A
V
T
@ 8 A, T
J
= 25C
1.2
V
dv/dt
150
V/s
di/dt
100
A/s
T
J
range
- 40 to 125
C
Characteristics
12TTS08
Units
Also available in SMD-220 package (series 12TTS..S)
Package Outline
2
12TTS08
SAFE
IR
Series
Preliminary Data Sheet I2144 11/97
V
RRM
, maximum
V
DRM
, maximum
I
RRM
/
I
DRM
Part Number
peak reverse voltage
peak direct voltage
125C
V
V
mA
12TTS08
800
800
1.0
Voltage Ratings
I
T(AV)
Max. Average On-state Current
8
A
@ T
C
= 108 C, 180 conduction half sine wave
I
T(RMS)
Max. RMS On-state Current
12.5
I
TSM
Max. Peak One Cycle Non-Repetitive
120
A
10ms Sine pulse, rated V
RRM
applied, T
J
= 125C
Surge Current
140
10ms Sine pulse, no voltage reapplied, T
J
= 125C
I
2
t
Max. I
2
t for fusing
72
A
2
s
10ms Sine pulse, rated V
RRM
applied, T
J
= 125C
100
10ms Sine pulse, no voltage reapplied, T
J
= 125C
I
2
t
Max. I
2
t for fusing
1000
A
2
s
t = 0.1 to 10ms, no voltage reapplied, T
J
= 125C
V
TM
Max. On-state Voltage Drop
1.2
V
@ 8A, T
J
= 25C
r
t
On-state slope resistance
16.2
m
T
J
= 125C
V
T(TO)
Threshold Voltage
0.87
V
I
RM
/I
DM
Max.Reverse and Direct
0.05
mA
T
J
= 25 C
Leakage Current
1.0
T
J
= 125 C
I
H
Typ. Holding Current
30
mA
Anode Supply = 6V, Resistive load, Initial I
T
=1A
I
L
Max. Latching Current
50
mA
Anode Supply = 6V, Resistive load
dv/dt Max. rate of rise of off-state Voltage
150
V/s
T
J
= 25C
di/dt
Max. rate of rise of turned-on Current
100
A/s
Absolute Maximum Ratings
Parameters
12TTS08
Units
Conditions
V
R
= rated V
RRM
/ V
DRM
3
12TTS08
SAFE
IR
Series
Preliminary Data Sheet I2144 11/97
Triggering
P
GM
Max. peak Gate Power
8.0
W
P
G(AV)
Max. average Gate Power
2.0
+ I
GM
Max. paek positive Gate Current
1.5
A
- V
GM
Max. paek negative Gate Voltage
10
V
I
GT
Max. required DC Gate Current
20
mA
Anode supply = 6V, resistive load, T
J
= - 65C
to trigger
15
Anode supply = 6V, resistive load, T
J
= 25C
10
Anode supply = 6V, resistive load, T
J
= 125C
V
GT
Max. required DC Gate Voltage
1.2
V
Anode supply = 6V, resistive load, T
J
= - 65C
to trigger
1
Anode supply = 6V, resistive load, T
J
= 25C
0.7
Anode supply = 6V, resistive load, T
J
= 125C
V
GD
Max. DC Gate Voltage not to trigger
0.2
T
J
= 125C, V
DRM
= rated value
I
GD
Max. DC Gate Current not to trigger
0.1
mA
T
J
= 125C, V
DRM
= rated value
Parameters
12TTS08
Units
Conditions
Switching
Parameters
12TTS08
Units
Conditions
t
gt
Typical turn-on time
0.8
s
T
J
= 25C
t
rr
Typical reverse recovery time
3
T
J
= 125C
t
q
Typical turn-off time
100
T
J
Max. Junction Temperature Range
- 40 to 125
C
T
stg
Max. Storage Temperature Range
- 40 to 125
R
thJC
Max. Thermal Resistance Junction
1.5
C/W
DC operation
to Case
R
thJA
Max. Thermal Resistance Junction
62
to Ambient
R
thCS
Typ. Thermal Resistance Case
0.5
Mounting surface, smooth and greased
to Heatsink
wt
Approximate Weight
2 (0.07)
g (oz.)
T
Mounting Torque
Min.
6 (5)
Max.
12 (10)
Case Style
TO-220AC
Thermal-Mechanical Specifications
Parameters
12TTS08
Units
Conditions
Kg-cm
(Ibf-in)
4
12TTS08
SAFE
IR
Series
Preliminary Data Sheet I2144 11/97
Fig. 2 - Current Rating Characteristics
Fig. 3 - On-state Power Loss Characteristics
Fig. 4 - On-state Power Loss Characteristics
Fig. 6 - Maximum Non-Repetitive Surge Current
Fig. 7 - Maximum Non-Repetitive Surge Current
Fig. 1 - Current Rating Characteristics
100
105
110
115
120
125
0
2
4
6
8
10
30
60
90
120
180
M
a
x
i
m
u
m
A
l
l
o
w
a
b
l
e
C
a
s
e
Te
m
p
e
r
a
t
u
r
e
(
C
)
Conduction Angle
Average On-state Current (A)
12TTS08
R (DC) = 1.5 K/W
thJ C
100
105
110
115
120
125
0
2
4
6
8
10
12
14
DC
30
60
90
120
180
Average On-state Current (A)
M
a
x
i
m
u
m
A
l
lo
w
a
b
l
e C
a
s
e
Te
m
p
er
a
t
u
r
e (
C
)
Conduction Period
12TTS08
R (DC) = 1.5 K/W
thJC
0
1
2
3
4
5
6
7
8
9
10
0
1
2
3
4
5
6
7
8
9
RMS Limit
Conduction Angle
M
a
x
i
m
u
m
A
v
e
r
ag
e
O
n
-
s
t
a
t
e
P
o
we
r
Lo
ss
(
W
)
Average On-state Current (A)
180
120
90
60
30
12TTS08
T = 125C
J
0
2
4
6
8
10
12
14
0
2
4
6
8
10
12
14
DC
180
120
90
60
30
RMS Limit
Conduction Period
M
a
x
i
m
u
m
A
v
e
r
ag
e
O
n
-
s
t
a
t
e
P
o
w
e
r
Lo
ss (
W
)
Average On-state Current (A)
12TTS08
T = 125C
J
60
70
80
90
100
110
120
130
1
10
100
Number Of Equal Amplitude Half Cycle Current Pulses (N)
At Any Rated Load Condition And With
Rated V Applied Following Surge.
RRM
P
e
a
k
H
a
lf
S
i
n
e
W
a
v
e
O
n
-
s
t
a
t
e
C
u
r
r
e
n
t
(
A
)
Initial T = 125C
@ 60 Hz 0.0083 s
@ 50 Hz 0.0100 s
J
12TTS08
50
60
70
80
90
100
110
120
130
140
150
0.01
0.1
1
P
e
ak
Hal
f
S
i
n
e
W
a
v
e
O
n
-
s
t
a
t
e
C
u
r
r
e
n
t
(
A
)
Pulse Train Duration (s)
Maximum Non Repetitive Surge Current
Versus Pulse Train Duration. Control
Of Conduction May Not Be Maintained.
Initial T = 125C
No Voltage Reapplied
Rated V Reapplied
RRM
J
12TTS08
5
12TTS08
SAFE
IR
Series
Preliminary Data Sheet I2144 11/97
Fig. 7 - On-state Voltage Drop Characteristics
Fig. 8 - Thermal Impedance Z
thJC
Characteristics
1
10
100
1000
0.5
1
1.5
2
2.5
3
3.5
T = 25C
J
I
n
st
ant
a
ne
o
u
s O
n
-
s
t
a
t
e
C
u
r
r
e
n
t
(
A
)
Instantaneous On-state Voltage (V)
T = 125C
J
12TTS08
0.01
0.1
1
10
0.0001
0.001
0.01
0.1
1
Square Wave Pulse D uration (s)
Steady State Value
(DC Operation)
Single Pulse
D = 0.50
D = 0.33
D = 0.25
D = 0.17
D = 0.08
th
J
C
Tr
a
n
s
i
e
n
t
T
h
e
r
m
a
l
I
m
p
e
d
a
n
c
e
Z
(
C
/
W
)
12TTS08
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