Bulletin PD-20686 rev. A 01/06
8TQ...G
SCHOTTKY RECTIFIER
8 Amp
I
F(AV)
= 8 Amp
V
R
= 80 - 100V
Major Ratings and Characteristics
Characteristics
I
F(AV)
Rectangular
waveform
V
RRM
range
I
FSM
@ tp = 5 µs sine
V
F
T
J
@ 8 Apk, T
J
= 125°C
range
Description/ Features
Units
A
V
A
V
°C
The 8TQ...G Schottky rectifier series has been optimized for
low reverse leakage at high temperature. The proprietary
barrier technology allows for reliable operation up to 175° C
junction temperature. Typical applications are in switching
power supplies, converters, free-wheeling diodes, and re-
verse battery protection.
High purity, high temperature epoxy encapsulation for
enhanced mechanical strength and moisture resistance
Low forward voltage drop
High frequency operation
Guard ring for enhanced ruggedness and long term
reliability
175° C T
J
operation
Value
8
80 - 100
850
0.58
- 55 to 175
Case Styles
8TQ...G
Base
Cathode
1
3
Cathode
Anode
TO-220AC
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1
8TQ...G Series
Final PD-20686 rev. A 01/06
Voltage Ratings
Part number
V
R
Max. DC Reverse Voltage (V)
80
100
V
RWM
Max. Working Peak Reverse Voltage (V)
8TQ080G
8TQ100G
Absolute Maximum Ratings
Parameters
I
F(AV)
Max. Average Forward Current
* See Fig. 5
I
FSM
E
AS
I
AR
Max. Peak One Cycle Non-Repetitive
Surge Current * See Fig. 7
Non-Repetitive Avalanche Energy
Repetitive Avalanche Current
8TQ
8
850
230
7.50
0.50
Units
A
Conditions
50% duty cycle @ T
C
= 157° C, rectangular wave form
Following any rated
load condition and
10ms Sine or 6ms Rect. pulse with rated V
RRM
applied
5µs Sine or 3µs Rect. pulse
T
J
= 25 °C, I
AS
= 0.50 Amps, L = 60 mH
Current decaying linearly to zero in 1 µsec
Frequency limited by T
J
max. V
A
= 1.5 x V
R
typical
A
mJ
A
Electrical Specifications
Parameters
V
FM
Max. Forward Voltage Drop
* See Fig. 1
(1)
8TQ
0.72
0.88
0.58
0.69
Units
V
V
V
V
mA
mA
pF
nH
V/ µs
@ 8A
@ 16A
@ 8A
@ 16A
T
J
= 25 °C
T
J
= 125 °C
Conditions
T
J
= 25 °C
T
J
= 125 °C
V
R
= rated V
R
I
RM
C
T
L
S
Max. Reverse Leakage Current (1)
* See Fig. 2
Max. Junction Capacitance
Typical Series Inductance
0.28
7
500
8
10000
V
R
= 5V
DC
(test signal range 100Khz to 1Mhz) 25 °C
Measured lead to lead 5mm from package body
dv/dt Max. Voltage Rate of Change
(Rated V
R
)
(1) Pulse Width < 300µs, Duty Cycle < 2%
Thermal-Mechanical Specifications
Parameters
T
J
T
stg
Max. Junction Temperature Range
Max. Storage Temperature Range
8TQ
-55 to 175
-55 to 175
2.0
0.50
2 (0.07)
Min.
Max.
6 (5)
12 (10)
Units
°C
°C
°C/W
°C/W
g (oz.)
Kg-cm
(Ibf-in)
DC operation
Conditions
R
thJC
Max. Thermal Resistance Junction
to Case
R
thCS
Typical Thermal Resistance, Case to
Heatsink
wt
T
Approximate Weight
Mounting Torque
Device Marking
* See Fig. 4
Mounting surface , smooth and greased
8TQ...G
2
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8TQ...G Series
Final PD-20686 rev. A 01/06
1000
100
10
1
0.1
0.01
0.001
0.0001
T = 175°C
J
150°C
125°C
100°C
75°C
50°C
25°C
100
Ins
tantaneousForward Current - I F (A)
R
everse Current - I
R
(mA)
0
20
40
60
80
100
10
TJ= 175°C
TJ= 125°C
TJ= 25°C
Revers Voltage - VR (V)
e
Fig. 2 - Typical Values of Reverse Current
Vs. Reverse Voltage
1000
Junction Capacitance - C T (pF)
1
T = 25°C
J
0.1
0
0.2 0.4 0.6 0.8
1
1.2 1.4 1.6 1.8
2
2.2
100
0 10 20 30 40 50 60 70 80 90 100110
Reverse Volta ge - VR (V)
Forward Voltage Drop - VFM (V)
Fig. 1 - Maximum Forward Voltage Drop Characteristics
10
Fig. 3 - Typical Junction Capacitance
Vs. Reverse Voltage
Thermal Impedance Z
thJC
(°C/W)
D = 0.75
D = 0.50
D = 0.33
1
D = 0.25
D = 0.20
Single Pulse
(Thermal Resistance)
0.1
1E-04
1E-03
1E-02
1E-01
1E+00
t
1
, Rectangular Pulse Duration (Seconds)
Fig. 4 - Maximum Thermal Impedance Z
thJC
Characteristics
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3
8TQ...G Series
Final PD-20686 rev. A 01/06
180
Allowable Case Temperature - (°C)
7
Average Power Loss - (Watts)
6
5
4
RMSLimit
3
2
1
0
DC
D = 0.20
D = 0.25
D = 0.33
D = 0.50
D = 0.75
175
170
165
160
155
150
145
see note (2)
DC
S
quare wave (D = 0.50)
80% Rated V
R
applied
140
0
2
4
6
8
10
12
0
2
4
6
8
10
12
(A)
Average Forward Current - I
F(AV)
(A)
Average Forward Current - I
F(AV)
Fig. 5 - Maximum Allowable Case Temperature
Vs. Average Forward Current
1000
Non-Repetitive Surge Current - I FS (A)
M
Fig. 6 - Forward Power Loss Characteristics
At Any R
ated Load Condition
And With R
ated V RR Applied
M
Following S
urge
100
10
100
1000
10000
S
quare Wave Pulse Duration - t p (microsec)
Fig. 7 - Maximum Non-Repetitive Surge Current
L
HIGH-S
PEED
S CH
WIT
F
REE-WHEEL
DIODE
40HF 40S
L 02
+
DUT
IR P460
F
R = 25 ohm
g
Vd = 25 Volt
CURRENT
MONIT
OR
Fig. 8 - Unclamped Inductive Test Circuit
(2)
Formula used: T
C
= T
J
- (Pd + Pd
REV
) x R
thJC
;
Pd = Forward Power Loss = I
F(AV)
x V
FM
@ (I
F(AV)
/
D) (see Fig. 6);
Pd
REV
= Inverse Power Loss = V
R1
x I
R
(1 - D); I
R
@ V
R1
= 80% rated V
R
4
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8TQ...G Series
Final PD-20686 rev. A 01/06
Outline Table
Conform to JEDEC outline TO-220AB
Dimensions in millimeters and (inches)
Part Marking Information
PART NUMBER
G = Schottky Generation
EXAMPLE: THIS IS A 8TQ100G
LOT CODE 1789
ASSEMBLED ON WW 19, 2001
IN THE ASSEMBLY LINE "C"
INTERNATIONAL
RECTIFIER
LOGO
ASSEMBLY
LOT CODE
DATE CODE
YEAR 1 = 2001
WEEK 19
LINE C
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