Q2004D31V
| Model | Q2004D31V |
| Description | Thyristor Product Catalog |
| PDF file | Total 224 pages (File size: 3M) |
| Chip Manufacturer | TECCOR |
AN1002
Application Notes
The following table and Figure AN1002.9 show the relationship of
gating, latching, and holding of a 4 A device.
*
A
Sensitive
SCR
A
Power
SCR
Typical 4 A Triac Gating, Latching,
and Holding Relationship
Quadrants or Operating Mode
Parameter
I
GT
(mA)
I
L
(mA)
I
H
(mA)
Quadrant I
10
12
10
Quadrant II
17
48
10
Quadrant III
18
12
12
Quadrant IV
27
13
12
G
K
G
K
*
MT2
Sensitive
Triac
MT2
Power
Triac
G
MT1
G
MT1
*
Resistor is provided for limiting gate
current (I
GTM
) peaks to power device.
Figure AN1002.8
“Amplified Gate” Thyristor Circuit
(mA)
I
H
(+)
QUADRANT II
20
QUADRANT I
I
GT
(Solid Line)
I
L
(Dotted Line)
(mA)
50
40
30
20
10
0
10
10
20
30
40
10
QUADRANT III
Figure AN1002.9
20
I
H
(–)
QUADRANT IV
Typical Gating, Latching, and Holding Relationships of 4 A Triac at 25 °C
The relationships of gating, latching, and holding for several
device types are shown in the following table. For convenience
all ratios are referenced to Quadrant I gating.
Typical Ratio of Gating, Latching, and Holding Currents at 25 °C
Ratio
I
GT
(
II
)
-----------------
-
I
GT
(
I
)
1.6
1.5
1.5
–
–
I
GT
(
III
)
-------------------
-
I
GT
(
I
)
2.5
1.4
1.8
–
–
I
GT
(
IV
)
--------------------
I
GT
(
I
)
2.7
3.1
–
–
–
I
L
(
I
)
---------------
-
I
GT
(
I
)
1.2
1.6
2.4
25
3.2
I
L
(
II
)
---------------
-
I
GT
(
I
)
4.8
4.0
7.0
–
–
I
L
(
III
)
---------------
-
I
GT
(
I
)
1.2
1.8
2.1
–
–
I
L
(
IV
)
---------------
-
I
GT
(
I
)
1.3
2.0
–
–
–
I
H
(
+
)
---------------
-
I
GT
(
I
)
1.0
1.1
2.2
25
2.6
I
H
(-)
---------------
-
I
GT
(
I
)
1.2
1.6
1.9
–
–
Devices
4 A Triac
10 A Triac
15 A Alternistor
1 A Sensitive SCR
6 A SCR
http://www.teccor.com
+1 972-580-7777
AN1002 - 4
©2002 Teccor Electronics
Thyristor Product Catalog
