AC16DGM Teccor Electronics, AC16DGM Datasheet - Page 179

• Manufacturer Part Number: AC16DGM
• Manufacturer: Teccor Electronics

8
Introduction
Data sheets for SCRs and triacs give vital information regarding
maximum ratings and characteristics of thyristors. If the maxi-
mum ratings of the thyristors are surpassed, possible irrevers-
ible damage may occur. The characteristics describe various
pertinent device parameters which are guaranteed as either min-
imums or maximums. Some of these characteristics relate to the
ratings but are not ratings in themselves. The characteristic does
not define what the circuit must provide or be restricted to, but
defines the device characteristic. For example, a minimum value
is indicated for the dv/dt because this value depicts the guaran-
teed worst-case limit for all devices of the specific type. This min-
imum dv/dt value represents the maximum limit that the circuit
should allow.
Maximum Ratings
V
The peak repetitive reverse voltage rating is the maximum peak
reverse voltage that may be continuously applied to the main ter-
minals (anode, cathode) of an SCR. (Figure AN1008.1) An open-
gate condition and gate resistance termination is designated for
this rating. An increased reverse leakage can result due to a pos-
itive gate bias during the reverse voltage exposure time of the
SCR. The repetitive peak reverse voltage rating relates to case
temperatures up to the maximum rated junction temperature.
Figure AN1008.1
©2002 Teccor Electronics
Thyristor Product Catalog
RRM
: Peak Repetitive Reverse Voltage — SCR
Reverse Leakage
Current - (I
Specified V
-V
RRM
RRM
) at
Voltage Drop (V
Specified Current (i
Specified Minimum
Breakdown
Reverse Blocking
V-I Characteristics of SCR Device
Reverse
Voltage (V
Voltage
Minimum Holding
Current (I
RRM
T
) at
H
)
T
)
)
+I
-I
Specified Minimum
Voltage (V
Off - State
Blocking
Breakover
Forward
Voltage
Latching Current (I
DRM
)
Off - State Leakage
Current - (I
Specified V
Explanation of Maximum Ratings and
L
DRM
)
DRM
) at
+V
AN1008 - 1
V
SCR
The peak repetitive forward (off-state) voltage rating (Figure
AN1008.1) refers to the maximum peak forward voltage which
may be applied continuously to the main terminals (anode, cath-
ode) of an SCR. This rating represents the maximum voltage the
SCR should be required to block in the forward direction. The
SCR may or may not go into conduction at voltages above the
V
and gate resistance termination. A positive gate bias should be
avoided since it will reduce the forward-voltage blocking capabil-
ity. The peak repetitive forward (off-state) voltage rating applies
for case temperatures up to the maximum rated junction temper-
ature.
Triac
The peak repetitive off-state voltage rating should not be sur-
passed on a typical, non-transient, working basis. (Figure
AN1008.2) V
This rating applies for either positive or negative bias on main
terminal 2 at the rated junction temperature. This voltage is less
than the minimum breakover voltage so that breakover will not
occur during operation. Leakage current is controlled at this volt-
age so that the temperature rise due to leakage power does not
contribute significantly to the total temperature rise at rated cur-
rent.
Figure AN1008.2
Characteristics for Thyristors
DRM
DRM
rating. This rating is specified for an open-gate condition
: Peak Repetitive Forward (Off-state) Voltage
-V
DRM
Voltage Drop (V
Specified Current (i
should not be exceeded even instantaneously.
Minimum Holding
Current (I
V-I Characteristics of Triac Device
H
T
)
) at
T
)
+I
-I
AN1008
Specified Minimum
Voltage (V
Off-state
Blocking
Breakover
Voltage
Latching Current (I
DRM
Off-state Leakage
Current – (I
Specified V
)
http://www.teccor.com
[phone]
DRM )
DRM
+V
L
)
at