Dimensions
Inches
Millimeters
G
0.06
1.5
H
0.031 Min.
0.8 Min.
J
0.021 Max.
0.58 Max.
K
0.019 Max.
0.48 Max.
L
0.016+0.001/-0.002 0.4+.03/-.05
Dimensions
Inches
Millimeters
A
0.18 Max.
4.6 Max.
B
0.17 Max.
4.2 Max.
C
0.12
3.0
D
0.10 0.004
2.5 0.1
E
0.06 0.008
1.6 0.2
F
0.06 0.004
1.5 0.1
Description:
The Powerex CR08AS Phase
Control SCRs are glass passivat-
ed thyristors for use in low power
control and rectification. These
devices are molded epoxy plastic
types.
Features:
Surface Mount Type
Glass Passivated
Gate Trigger Current is Small
Easy Application for Printed
Circuits
Applications:
Solid State Relay
Static Switches
Ignitors
Strobe Flasher
Ordering Information:
Example: Select the complete
seven or eight digit part number
you desire from the table - i.e.
CR08AS-8 is a 400 Volt, 0.8
Ampere Phase Control SCR.
V
DRM
/V
RRM
Type
Volts Code
CR08AS
400
-8
600
-12
Powerex, Inc., 200 Hillis Street, Youngwood, Pennsylvania 15697-1800 (412) 925-7272
Surface Mount,
Phase Control SCR
0.8 Amperes/400-600 Volts
CR08AS
Outline Drawing (Conforms to SOT-89)
P-17
A
C
D
B
G
L
J
K
F
E
H
CATHODE
ANODE
GATE
CONNECTION DIAGRAM
OUTLINE DRAWING
Powerex, Inc., 200 Hillis Street, Youngwood, Pennsylvania 15697-1800 (412) 925-7272
CR08AS
Surface Mount, Phase Control SCR
0.8 Amperes/400-600 Volts
P-18
Absolute Maximum Ratings,
T
a
= 25 C unless otherwise specified
Ratings
Symbol
CR08AS-8
CR08AS-12
Units
(Marked "AD")
(Marked "AF")
Repetitive Peak Off-state Voltage
V
DRM
400
600
Volts
Repetitive Peak Reverse Voltage
V
RRM
400
600
Volts
Non-repetitive Peak Reverse Voltage
V
RSM
500
720
Volts
DC Reverse Voltage
V
R(DC)
320
480
Volts
DC Forward Voltage
V
D(DC)
320
480
Volts
RMS On-state Current
I
T(RMS)
1.26
1.26
Amperes
Average On-state Current (Nominal, See Graphs) T
a
= 51C
I
T(avg)
0.8
0.8
Amperes
Non-repetitive Peak Surge, On-state Current One Cycle (60 Hz)
I
TSM
10
10
Amperes
I
2
t for Fusing, t = 8.3 msec
I
2
t
0.42
0.42
A
2
sec
Peak Gate Power Dissipation
P
GM
0.5
0.5
Watts
Average Gate Power Dissipation
P
G(avg)
0.1
0.1
Watts
Peak Forward Gate Current
I
FGM
0.3
0.3
Amperes
Peak Forward Gate Voltage
V
FGM
6
6
Volts
Peak Reverse Gate Voltage
V
RGM
6
6
Volts
Storage Temperature
T
stg
-40 to 125
-40 to 125
C
Operating Junction Temperature
T
j
-40 to 125
-40 to 125
C
Weight
48
48
mg
Powerex, Inc., 200 Hillis Street, Youngwood, Pennsylvania 15697-1800 (412) 925-7272
CR08AS
Surface Mount, Phase Control SCR
0.8 Amperes/400-600 Volts
RGK
1k
SWITCH
SWITCH 1: I
GT
Measurement
SWITCH 2: V
GT
Measurement
(Inner resistance of voltage meter is about 1k )
IGS
1 2
IGT
VGT
3V
DC
6V
DC
60
TUT
A
1
V
1
A
2
A
3
P-19
Electrical and Thermal Characteristics,
T
j
= 25 C unless otherwise specified
Characteristics
Symbol
Test Conditions
Min.
Typ.
Max.
Units
Voltage Blocking State
Peak Forward Leakage
I
DRM
T
j
= 125C, V
D
= V
DRM
0.5
mA
Peak Reverse Leakage
I
RRM
T
j
= 125C, V
R
= V
RRM
0.5
mA
Current Conducting State
Peak On-state Voltage
V
TM
T
c
= 25C, I
TM
= 2.5A
1.5
Volts
DC Holding Current
I
H
V
D
= 12V, R
GK
= 1K , T
j
= 25C
1.5
3.0
mA
Thermal Resistance,
Junction-to-ambient
R
th(j-a)
65
C/Watt
Gate Parameters
Gate Current to Trigger
*
I
GT
V
D
= 6V, R
L
= 60 , T
j
= 25C
100
A
Gate Voltage to Trigger
V
GT
V
D
= 6V, R
L
= 60 , T
j
= 25C
0.8
Volts
Non-triggering Gate Voltage
V
GD
V
D
= 1/2V
DRM
, R
GK
= 1k , T
j
= 125C
0.3
Volts
I
GT
, V
GT
Measurement Circuit
* If special values of I
GT
are required, choose at
least two items from those listed in the table below;
i.e. A-B or B-C.
Item
A
B
C
IGT ( A)
1-30
20-50
40-100
Powerex, Inc., 200 Hillis Street, Youngwood, Pennsylvania 15697-1800 (412) 925-7272
CR08AS
Surface Mount, Phase Control SCR
0.8 Amperes/400-600 Volts
0
1
2
3
4
5
MAXIMUM ON-STATE
CHARACTERISTICS
INSTANTANEOUS ON-STATE
CURRENT, I
T
, (AMPERES)
INSTANTANEOUS ON-STATE VOLTAGE, V
T
, (VOLTS)
10
-1
10
0
10
1
10
2
T
j
= 25
o
C
10
0
10
1
10
2
10
3
TRANSIENT THERMAL
IMPEDANCE CHARACTERISTICS
(JUNCTION-TO-AMBIENT)
TIME, t, (S)
TRANSIENT THERMAL IMPEDANCE, Z
th(j-a)
, (
C/WATT)
10
-3
10
-2
10
0
10
1
10
2
10
3
10
-1
10
0
25 x 25 x t0.7
ALUMINUM BOARD
0
2
4
6
8
10
MAXIMUM SURGE CURRENT
FOLLOWING RATED LOAD CONDITIONS
CYCLES AT 60 Hz
MAXIMUM PEAK SURGE CURRENT, I
TSM
, (AMPERES)
10
0
10
1
10
2
0
20
40
60
80
100
120
140
160
ALLOWABLE AMBIENT TEMPERATURE
VS. AVERAGE ON-STATE CURRENT
(SINGLE-PHASE HALF WAVEFORM)
AVERAGE ON-STATE CURRENT, I
T(avg)
, (AMPERES)
AMBIENT TEMPERATURE, T
a
, (
C)
0
0.2
0.4
0.6
0.8
= 180
90
C/W
65
C/W
RESISTIVE,
INDUCTIVE LOADS
NATURAL CONVECTION
360
R
th(j-a)
= 200
C/W
0
20
40
60
80
100
120
140
160
ALLOWABLE AMBIENT TEMPERATURE
VS. AVERAGE ON-STATE CURRENT
(SINGLE-PHASE FULL WAVEFORM)
AVERAGE ON-STATE CURRENT, I
T(avg)
, (AMPERES)
AMBIENT TEMPERATURE, T
a
, (
C)
0
0.4
.08
1.2
1.6
= 30
180
360
RESISTIVE LOADS
NATURAL CONVECTION
ALUMINUM BOARD
25 X 25 X t0.7
120
90
60
0
20
40
60
80
100
120
140
160
ALLOWABLE AMBIENT TEMPERATURE
VS. AVERAGE ON-STATE CURRENT
(SINGLE-PHASE HALF WAVEFORM)
AVERAGE ON-STATE CURRENT, I
T(avg)
, (AMPERES)
AMBIENT TEMPERATURE, T
a
, (
C)
0
0.4
0.8
1.2
1.6
= 30
60
90
120
180
RESISTIVE,
INDUCTIVE LOADS
NATURAL CONVECTION
360
25 x 25 x t0.7
ALUMINUM BOARD
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
MAXIMUM ON-STATE
POWER DISSIPATION
(SINGLE-PHASE HALF WAVEFORM)
AVERAGE ON-STATE CURRENT, I
T(avg)
, (AMPERES)
MAXIMUM POWER DISSIPATION, (WATTS)
0
0.4
0.8
1.2
1.6
= 30
90
120
180
60
360
RESISTIVE,
INDUCTIVE LOADS
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
MAXIMUM ON-STATE
POWER DISSIPATION
(SINGLE-PHASE FULL WAVEFORM)
AVERAGE ON-STATE CURRENT, I
T(avg)
, (AMPERES)
MAXIMUM POWER DISSIPATION, (WATTS)
0
RESISTIVE LOADS
0.4
0.8
1.2
1.6
360
= 30
60
90
120
180
10
-2
10
-1
10
0
10
1
10
2
GATE
CHARACTERISTICS
GATE CURRENT, I
G
, (mA)
GATE VOLTAGE, V
G
, (VOLTS)
10
-2
10
-1
10
0
10
1
10
2
V
GD
= 0.2V
V
FGM
= 6V
I
GT
= 100 A
T
j
= 25
I
FGM
= 0.3A
P
GM
= 0.5W
P
G(avg)
= 0.1W
V
GT
= 0.8V
P-20
Powerex, Inc., 200 Hillis Street, Youngwood, Pennsylvania 15697-1800 (412) 925-7272
CR08AS
Surface Mount, Phase Control SCR
0.8 Amperes/400-600 Volts
0
20
40
60
80
100
120
140
160
MAXIMUM
ALLOWABLE AMBIENT TEMPERATURE
(RECTANGULAR WAVEFORM)
AVERAGE ON-STATE CURRENT, I
T(avg)
, (AMPERES)
MAXIMUM ALLOWABLE AMBIENT TEMPERATURE, T
a
, (
C)
0
0.4
0.8
1.2
1.6
0.2
1.4
0.6
1.0
= 30
270
DC
RESISTIVE, INDUCTIVE
LOADS NATURAL
CONVECTION
60
90
120
180
360
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
MAXIMUM
ON-STATE POWER DISSIPATION
(RECTANGULAR WAVEFORM)
AVERAGE ON-STATE CURRENT, I
T(avg)
, (AMPERES)
MAXIMUM POWER DISSIPATION, (WATTS)
0
0.4
0.8
1.2
1.6
RESISTIVE, INDUCTIVE LOADS
360
= 30
60
90
120
180
270
DC
GATE TRIGGER CURRENT
VS. JUNCTION TEMPERATURE
(TYPICAL)
JUNCTION TEMPERATURE, T
j
, (
C)
GATE TRIGGER CURRENT, (t
C)
GATE TRIGGER CURRENT, (25
C)
x 100%
-40
0
40
80
120
160
10
0
10
1
10
2
10
3
GATE TRIGGER VOLTAGE
VS. JUNCTION TEMPERATURE
(TYPICAL)
JUNCTION TEMPERATURE, T
j
, (
C)
-40
0
40
80
120
0
0.2
0.4
0.6
0.8
1.0
GATE TRIGGER VOLTAGE, (VOLTS)
DISTRIBUTION
TYPICAL EXAMPLE
HOLDING CURRENT VS.
JUNCTION TEMPERATURE
(TYPICAL)
JUNCTION TEMPERATURE, T
j
, (
C)
-40
10
-1
10
0
10
1
10
2
0
40
80
120
160
HOLDING CURRENT, I
H
, (mA)
R
GK
= 1k
TYPICAL EXAMPLE
DISTRIBUTION
GATE TRIGGER CURRENT, IGT, (mA)
10
0
10
1
10
2
10
3
T
a
= 25
C
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
HOLDING CURRENT VS.
GATE TRIGGER CURRENT
HOLDING CURRENT,
I
H
, (mA)
HOLDING CURRENT VS.
GATE-TO-CATHODE RESISTANCE
(TYPICAL)
GATE-TO-CATHODE RESISTANCE, R
GK
, (k )
10
-1
10
0
10
1
10
2
HOLDING CURRENT,
(
R
GK
= rk
)
HOLDING CURRENT, (
R
GK
= 1k
)
x 100%
0
100
200
300
400
500
BREAKOVER VOLTAGE VS.
JUNCTION TEMPERATURE
(TYPICAL)
JUNCTION TEMPERATURE, T
j
, (
C)
-40
0
40
80
120
160
BREAKOVER VOLTAGE, (t
C)
BREAKOVER VOLTAGE, (25
C)
x 100%
R
GK
= 1k
0
40
80
120
160
BREAKOVER VOLTAGE VS.
RATE OF RISE OF OFF-STATE VOLTAGE
(TYPICAL)
RATE OF RISE OF
OFF-STATE VOLTAGE, dv/dt, (V/ s)
10
0
10
1
10
2
10
3
BREAKOVER VOLTAGE, (dv/dt = x V/
s)
BREAKOVER VOLTAGE, (dv/dt = 1V/
s)
x 100%
0
160
140
120
100
80
60
40
20
T
j
= 125
C
R
GK
= 1k
25 x 25 x t0.7
ALUMINUM
BOARD
P-21
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