Page 1
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 passivated 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/VRRM
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
DB
G
L
J
K
F
E
H
➀
➁
➂
➀ CATHODE
➁ ANODE
➂ GATE
CONNECTION DIAGRAM
OUTLINE DRAWING
➀
➂
➁
Page 2
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) Ta= 51°C I
T(avg)
0.8 0.8 Amperes
Non-repetitive Peak Surge, On-state Current One Cycle (60 Hz) I
TSM
10 10 Amperes
I2t for Fusing, t = 8.3 msec I2t 0.42 0.42 A2sec
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
Page 3
Powerex,Inc., 200 Hillis Street,Youngwood, Pennsylvania 15697-1800 (412) 925-7272
CR08AS
Surface Mount, Phase Control SCR
0.8 Amperes/400-600 Volts
R
GK
1kV
SWITCH
SWITCH 1: I
GT
Measurement
SWITCH 2: V
GT
Measurement
(Inner resistance of voltage meter is about 1kV)
I
GS
1 2
I
GT
V
GT
3V
DC
6V
DC
60V
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
Tj= 125°C, VD= V
DRM
– – 0.5 mA
Peak Reverse Leakage I
RRM
Tj= 125°C, VR= V
RRM
– – 0.5 mA
Current – Conducting State
Peak On-state Voltage V
TM
Tc= 25°C, ITM= 2.5A – – 1.5 Volts
DC Holding Current I
H
VD= 12V, RGK= 1KV, Tj= 25°C – 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
VD= 6V, RL= 60V, Tj= 25°C – – 100 mA
Gate Voltage to Trigger
†
V
GT
VD= 6V, RL= 60V, Tj= 25°C – – 0.8 Volts
Non-triggering Gate Voltage V
GD
VD= 1/2V
DRM
, RGK= 1kV, Tj= 125°C 0.3 – – Volts
†
IGT, VGTMeasurement 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 (mA) 1-30 20-50 40-100
Page 4
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, IT, (AMPERES)
INSTANTANEOUS ON-STATE VOLTAGE, V
T
, (VOLTS)
10
-1
10
0
10
1
10
2
Tj = 25oC
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
u = 180°
90°C/W
65°C/W
RESISTIVE,
INDUCTIVE LOADS
NATURAL CONVECTION
u
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
u = 30°
180°
u
360°
u
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
u = 30°
60°
90°
120°
180°
RESISTIVE,
INDUCTIVE LOADS
NATURAL CONVECTION
u
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
u = 30°
90°
120°
180°
60°
u
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
u
360°
u
u = 30°
60°
90°
120°
180°
10
-2
10
-1
10
0
10
1
10
2
GATE
CHARACTERISTICS
GATE CURRENT, IG, (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
= 100mA
Tj = 25°
I
FGM
= 0.3A
P
GM
= 0.5W
P
G(avg)
= 0.1W
V
GT
= 0.8V
P-20
Page 5
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 1.60.2 1.40.6 1.0
u = 30°
270° DC
RESISTIVE, INDUCTIVE
LOADS NATURAL
CONVECTION
60°
90°
120°
180°
u
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
u
360°
u = 30°
60°
90°
120°
180°
270°
DC
GATE TRIGGER CURRENT
VS. JUNCTION TEMPERATURE
(TYPICAL)
JUNCTION TEMPERATURE, Tj, (°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, Tj, (°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, Tj, (°C)
-40
10
-1
10
0
10
1
10
2
0 40 80 120 160
HOLDING CURRENT, I
H
, (mA)
RGK = 1kV
TYPICAL EXAMPLE
DISTRIBUTION
GATE TRIGGER CURRENT, IGT, (mA)
10
0
10
1
10
2
10
3
Ta = 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, RGK, (kV)
10
-1
10
0
10
1
10
2
HOLDING CURRENT, (R
GK
= rkV)
HOLDING CURRENT, (R
GK
= 1kV)
x 100%
0
100
200
300
400
500
BREAKOVER VOLTAGE VS.
JUNCTION TEMPERATURE
(TYPICAL)
JUNCTION TEMPERATURE, Tj, (°C)
-40
0
40
80
120
160
BREAKOVER VOLTAGE, (t°C)
BREAKOVER VOLTAGE, (25°C)
x 100%
RGK = 1kV
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/ms)
10
0
10
1
10
2
10
3
BREAKOVER VOLTAGE, (dv/dt = x V/ms)
BREAKOVER VOLTAGE, (dv/dt = 1V/ms)
x 100%
0
160
140
120
100
80
60
40
20
Tj = 125°C
R
GK
= 1kV
25 x 25 x t0.7
ALUMINUM
BOARD
P-21
Page 6
Powerex,Inc., 200 Hillis Street,Youngwood, Pennsylvania 15697-1800 (412) 925-7272
CR08AS
Surface Mount, Phase Control SCR
0.8 Amperes/400-600 Volts
BREAKOVER VOLTAGE VS.
GATE TO CATHODE RESISTANCE
(TYPICAL)
GATE TO CATHODE RESISTANCE, RGK ,(kV)
10
-1
10
0
10
1
10
2
Tj = 125°C
BREAKOVER VOLTAGE, (R
GK
= rkV)
BREAKOVER VOLTAGE, (R
GK
= 1kV)
x 100%
0
160
140
120
100
80
60
40
20
REPETITIVE PEAK OFF-STATE CURRENT
VS. JUNCTION TEMPERATURE
(TYPICAL)
JUNCTION TEMPERATURE, Tj, (°C)
-40
0
40
80
120
160
REPETITIVE PEAK OFF-STATE CURRENT, (t°C)
REPETITIVE PEAK OFF-STATE CURRENT, (25°C)
x 100%
0 40 80 120 160
0
40
80
120
160
200
240
280
320
THERMAL IMPEDANCE VS.
BOARD DIMENSIONS
BOARD DIMENSIONS, (mm)
REGULAR SQUARE ONE SIDE
THERMAL IMPEDANCE, (°C/W)
0 20 40 60 8010 7030 50
10 X 10 EPOXY
PLATE WITH COPPER FOIL
t0.7 ALUMINUM
BOARD
WITHOUT EPOXY PLATE
GATE TRIGGER CURRENT
VS. GATE CURRENT PULSE WIDTH
(TYPICAL)
GATE CURRENT PULSE WIDTH, tw, (ms)
GATE TRIGGER CURRENT, (t
w
)
GATE TRIGGER CURRENT, (DC)
x 100%
10
3
10
2
10
4
10
5
10
0
10
1
10
2
10
3
t
w
0.1 s
0
5
10
15
20
25
30
35
40
TURN-OFF TIME VS.
JUNCTION TEMPERATURE
(TYPICAL)
JUNCTION TEMPERATURE, Tj, (°C)
TURN-OFF TIME, T
q
, (ms)
0 40 80 120 16020 14060 100
TYPICAL EXAMPLE
DISTRIBUTION
VD = 50V
V
R
= 50V
I
T
= 2A
R
GK
= 1kV
T
a
= 25°C
TURN-ON TIME
VS. GATE CURRENT
(TYPICAL)
GATE CURRENT, IGT, (mA)
TURN-ON TIME, t
gt
, (ms)
10
-1
10
0
10
1
10
2
10
-1
10
0
10
1
10
2
VD = 100V
R
L
= 47V
R
GK
= 1kV
T
a
= 25°C
P-22
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