S2006FS221V Teccor Electronics, Inc., S2006FS221V Datasheet - Page 130

• Manufacturer Part Number: S2006FS221V
• Description: Thyristor Product Catalog
• Manufacturer: Teccor Electronics, Inc.

AN1002
Figure AN1002.8
Figure AN1002.9
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.
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1 A Sensitive SCR
15 A Alternistor
Sensitive
10 A Triac
Sensitive
*
4 A Triac
6 A SCR
Devices
Triac
Resistor is provided for limiting gate
current (I
SCR
G
G
“Amplified Gate” Thyristor Circuit
Typical Gating, Latching, and Holding Relationships of 4 A Triac at 25 °C
GTM
) peaks to power device.
A
K
MT2
MT1
*
*
50
G
G
Typical Ratio of Gating, Latching, and Holding Currents at 25 °C
I
----------------- -
I
40
GT
GT
1.6
1.5
1.5
–
–
II
I
QUADRANT II
QUADRANT III
A
K
MT2
MT1
30
Power
SCR
I
------------------- -
GT
I
Power
Triac
GT
2.5
1.4
1.8
–
–
III
I
20
I
--------------------
GT
I
GT
10
2.7
3.1
–
–
–
AN1002 - 4
IV
I
10
10
20
20
(mA)
0
The following table and Figure AN1002.9 show the relationship of
gating, latching, and holding of a 4 A device.
I
I
--------------- -
I
H
H
I
GT
L
(+)
(–)
1.2
1.6
2.4
3.2
25
Parameter
I
I
I
I
GT
I
H
10
L
(mA)
(mA)
(mA)
--------------- -
I
Ratio
I
GT
L
20
4.8
4.0
7.0
–
–
II
QUADRANT I
QUADRANT IV
I
Typical 4 A Triac Gating, Latching,
Quadrant I
and Holding Relationship
30
10
12
10
I
--------------- -
I
L
GT
1.2
1.8
2.1
–
–
III
Quadrants or Operating Mode
I
I
I
GT
L
(Dotted Line)
40
(Solid Line)
Quadrant II
17
48
10
I
--------------- -
I
L
GT
1.3
2.0
–
–
–
IV
I
©2002 Teccor Electronics
Thyristor Product Catalog
(mA)
Quadrant III
--------------- -
I
I
18
12
12
GT
H
1.0
1.1
2.2
2.6
25
+
Application Notes
I
Quadrant IV
--------------- -
I
GT
I
H
1.2
1.6
1.9
27
13
12
–
–
(-)
I