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 thyr istors 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 Pr inted
Circuits
Applications:
□Solid State Relay
□Static Switches
□Ignitors
□Strobe Flasher
Ordering Information:
Example: Select the complete
seven or eight digit par t number
you desire from the table - i.e.
CR08AS-8 is a 400 Volt, 0.8
Ampere Phase Control SCR.
VDRM/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 (Confor ms 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
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, Ta= 25 °C unless otherwise specified
Ratings Symbol CR08AS-8 CR08AS-12 Units
(Marked “AD”) (Marked “AF”)
Repetitive Peak Off-state Voltage VDRM 400 600 Volts
Repetitive Peak Reverse Voltage VRRM 400 600 Volts
Non-repetitive Peak Reverse Voltage VRSM 500 720 Volts
DC Reverse Voltage VR(DC) 320 480 Volts
DC Forward Voltage VD(DC) 320 480 Volts
RMS On-state Current IT(RMS) 1.26 1.26 Amperes
Average On-state Current (Nominal, See Graphs) Ta= 51°C IT(avg) 0.8 0.8 Amperes
Non-repetitive Peak Surge, On-state Current One Cycle (60 Hz) ITSM 10 10 Amperes
I2t for Fusing, t = 8.3 msec I2t 0.42 0.42 A2sec
Peak Gate Power Dissipation PGM 0.5 0.5 Watts
Average Gate Power Dissipation PG(avg) 0.1 0.1 Watts
Peak Forward Gate Current IFGM 0.3 0.3 Amperes
Peak Forward Gate Voltage VFGM 6 6 Volts
Peak Reverse Gate Voltage VRGM 6 6 Volts
Storage Temperature Tstg -40 to 125 -40 to 125 °C
Operating Junction Temperature Tj-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
1kV
SWITCH
SWITCH 1: IGT Measurement
SWITCH 2: VGT Measurement
(Inner resistance of voltage meter is about 1kV)
IGS
1 2
IGT
VGT
3V
DC 6V
DC
60V
TUT
A1
V1
A2
A3
P-19
Electrical and Thermal Characteristics, Tj= 25 °C unless otherwise specified
Characteristics Symbol Test Conditions Min. Typ. Max. Units
Voltage – Blocking State
Peak Forward Leakage IDRM Tj= 125°C, VD= VDRM – – 0.5 mA
Peak Reverse Leakage IRRM Tj= 125°C, VR= VRRM – – 0.5 mA
Current – Conducting State
Peak On-state Voltage VTM Tc= 25°C, ITM = 2.5A – – 1.5 Volts
DC Holding Current IH VD= 12V, RGK = 1KV, Tj= 25°C – 1.5 3.0 mA
Thermal Resistance,
Junction-to-ambient Rth(j-a) – – – 65 °C/Watt
Gate – Parameters
Gate Current to Tr igger†* IGT VD= 6V, RL= 60V, Tj= 25°C – – 100 mA
Gate Voltage to Trigger†VGT VD= 6V, RL= 60V, Tj= 25°C – – 0.8 Volts
Non-triggering Gate Voltage VGD VD= 1/2VDRM, RGK = 1kV, Tj= 125°C 0.3 – – Volts
† IGT, VGT Measurement Circuit
* If special values of IGT 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
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, VT, (VOLTS)
10-1 100101102
Tj = 25oC
100
101
102
103
TRANSIENT THERMAL
IMPEDANCE CHARACTERISTICS
(JUNCTION-TO-AMBIENT)
TIME, t, (S)
TRANSIENT THERMAL IMPEDANCE, Zth(j-a), (°C/WATT)
10-3 10-2
100101102103
10-1 100
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, ITSM, (AMPERES)
1001011020
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, Ta, (°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°
Rth(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, IT(avg), (AMPERES)
AMBIENT TEMPERATURE, Ta, (°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, Ta, (°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, IT(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, IT(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
100
101
102
GATE
CHARACTERISTICS
GATE CURRENT, IG, (mA)
GATE VOLTAGE, VG, (VOLTS)
10-2 10-1 100101102
VGD = 0.2V
VFGM = 6V
IGT = 100mA
Tj = 25°
IFGM = 0.3A
PGM = 0.5W
PG(avg) = 0.1W
VGT = 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, IT(avg), (AMPERES)
MAXIMUM ALLOWABLE AMBIENT TEMPERATURE, Ta, (°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, IT(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
100
101
102
103
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
100
101
102
0 40 80 120 160
HOLDING CURRENT, IH, (mA)
RGK = 1kV
TYPICAL EXAMPLE
DISTRIBUTION
GATE TRIGGER CURRENT, IGT, (mA)
100101102103
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, IH, (mA)
HOLDING CURRENT VS.
GATE-TO-CATHODE RESISTANCE
(TYPICAL)
GATE-TO-CATHODE RESISTANCE, RGK, (kV)
10-1 100101102
HOLDING CURRENT, (RGK = rkV)
HOLDING CURRENT, (RGK = 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)
100101102103
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
RGK = 1kV
25 x 25 x t0.7
ALUMINUM
BOARD
P-21
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 100101102
Tj = 125°C
BREAKOVER VOLTAGE, (RGK = rkV)
BREAKOVER VOLTAGE, (RGK = 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, (tw)
GATE TRIGGER CURRENT, (DC) x 100%
103
102
104
105
100101102103
tw 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, Tq, (ms)
0 40 80 120 16020 14060 100
TYPICAL EXAMPLE
DISTRIBUTION
VD = 50V
VR = 50V
IT = 2A
RGK = 1kV
Ta = 25°C
TURN-ON TIME
VS. GATE CURRENT
(TYPICAL)
GATE CURRENT, IGT, (mA)
TURN-ON TIME, tgt, (ms)
10-1
100
101
102
10-1 100101102
VD = 100V
RL = 47V
RGK = 1kV
Ta = 25°C
P-22
