Datasheet
154 EMC Components
Explanations:
– t
r
rise time at given load resistor R and 70% of the output pulse height.
– L
p
primary inductance measured at 1kHz (secondary coile open).
– L
str
stray inductance measured at the secondary side, short circuit at the primary side. If there are several secondary coils only one at the time is connected (measuring frequency 10kHz).
– The ignition current is a set peak value where the voltage drop over the coil resistance is still insignificant (mostly below 1V).
Pulse transformer selection table
IT 143 1:1:1 0.025 500 4 800 0.6 15 200 3 3 10 02 14
IT 153 1:1:1 0.1 500 4 600 1.4 9 120 1.5 1.5 10 02 14
IT 242 1:1:1 0.1 500 3.2 250 0.9 2.5 75 0.75 0.75 7 02 6
IT 243 1:1:1 0.1 500 3.2 250 1 2.5 85 0.8 0.8 7 02 6
IT 213 1:1:1 0.25 380 2.5 450 0.4 6.5 20 1.4 1.4 40 02 9
IT 233 1:1:1 0.25 500 4 300 1.3 3 45 0.8 0.8 7 02 13
IT 253 1:1:1 0.25 500 3.2 160 1.3 1.1 45 0.55 0.55 6 02 6
IT 312 1:1:1 0.25 380 2.5 1200 1 21 35 2.4 2.7 30 02 24
IT 313 1:1:1 1 380 2.5 450 0.6 3 6 0.33 0.4 27 02 24
IT 249 2:1:1 0.25 500 3.2 330 4 17 140 3.1 1.5 9 02 6
IT 154 3:1:1 0.1 500 4 600 1.3 75 180 7.5 2.2 9 02 14
IT 244 3:1:1 0.1 500 3.2 200 0.7 15 70 2.8 0.9 9 02 6
IT 234 3:1:1 0.25 500 4 280 1 17 40 2 0.7 9 02 13
IT 314 3:1:1 1 380 2.5 500 1 35 20 1.6 0.7 30 02 25
Pulse transformer Turns ratio Ignition Voltage Voltage Rise Inductance Resistance Coupling Input/Output Weight
current time area time capacitance connections
I
ign
U
nom
U
p
V
0t
t
r
L
p
L
str
R
p
R
s
C
k
[A] [V] [kV] [Vµs] [µs] [mH] [µH] [Ω] [Ω] [pF] [g]
Mechanical data
IT 213 IT 243, IT 244, IT 249, IT 253
C
D
F
A
H
G
E
6
12
4
Prim.
H H
3
5
5
21
4
3
6
IT 143, IT 153, IT 154, IT 233, IT 234
L
C D
F
A
H
G
E
L
B
1
3
2
6
Prim.
I
5
4
2
4
1
56
3
H
IT 312, IT 313, IT 314
K
C D
F
A
H
G
E
L
B
3
2
4
5
Prim.
I
L
H
1 6
4
5
3
2
6 1
L
C D
F
A
H
G
E
L
B
6
4
5
1
Prim.
K
2
3
5
3
6
21
4
I
IT 242
L
C D
F
A
H
G
E
L
B
6
4
5
1
Prim.
K
2
3
5
3
6
21
4
I
> IT series