Vishay General Semiconductor
UH8JT & UHF8JT
Document Number 88956
21-Apr-06
www.vishay.com
1
1
2
TO-220AC
ITO-220AC
1
2
PIN 1
PIN 2
CASE
PIN 1
PIN 2
UH8JT
UHF8JT
High Voltage Ultrafast Rectifier
FEATURES
Oxide planar chip junction
Ultrafast recovery time
Soft recovery characteristics
Low switching losses, high efficiency
High forward surge capability
Solder Dip 260 C, 40 seconds
Component in accordance to RoHS 2002/95/EC
and WEEE 2002/96/EC
TYPICAL APPLICATIONS
For use in high voltage continuous mode power factor
correctors (CCM PFC), switching mode power
supplies, freewheeling diodes and secondary dc-to-dc
rectification application.
MECHANICAL DATA
Case: TO-220AC, ITO-220AC
Epoxy meets UL 94V-0 flammability rating
Terminals: Matte tin plated leads, solderable per
J-STD-002B and JESD22-B102D
E3 suffix for commercial grade
Polarity: As marked
Mounting Torque: 10 in-lbs maximum
MAJOR RATINGS AND CHARACTERISTICS
I
F(AV)
8 A
V
RRM
600 V
I
FSM
80 A
t
rr
25 ns
V
F
1.47 V
Tj max.
175 C
MAXIMUM RATINGS (T
C
= 25 C unless otherwise noted)
PARAMETER SYMBOL
UH8JT
UHF8JT
UNIT
Maximum repetitive peak reverse voltage
V
RRM
600
V
Maximum average forward rectified current (see Fig. 1)
I
F(AV)
8
A
Peak forward surge current 8.3 ms single half sine-wave
superimposed on rated load
I
FSM
80
A
Operating junction and storage temperature range
T
J
, T
STG
- 55 to + 175
C
Isolation voltage (ITO-220AC only)
From terminal to heatsink t = 1 minute
V
AC
1500
V
ELECTRICAL CHARACTERISTICS (T
C
= 25 C unless otherwise noted)
PARAMETER
TEST CONDITIONS
SYMBOL
TYP.
MAX.
UNIT
Instantaneous forward voltage
(1)
I
F
= 4 A
I
F
= 8 A
T
J
= 25 C
V
F
1.82
2.30
-
3.0
V
I
F
= 4 A
I
F
= 8 A
T
J
= 125 C
1.20
1.47
-
1.85
Reverse current
(1)
at V
R
= 600 V
T
J
= 25 C
T
J
= 125 C
I
R
-
-
5.0
100
A
www.vishay.com
2
Document Number 88956
21-Apr-06
Vishay General Semiconductor
UH8JT & UHF8JT
Note:
(1) Pulse test: 300 s pulse width, 1 % duty cycle
RATINGS AND CHARACTERISTICS CURVES
(T
A
= 25 C unless otherwise noted)
Maximum reverse recovery time
at I
F
= 0.5 A, I
R
= 1.0 A,
I
rr
= 0.25 A
t
rr
20
25
ns
at I
F
= 1.0 A, di/dt = 50 A/s,
V
R
= 30 V, I
rr
= 0.1 I
RM
-
45
Typical softness factor (t
b
/t
a
)
I
F
= 8 A, di/dt = 200 A/s,
V
R
= 400 V, T
J
= 125 C
S
0.5
-
-
Typical reverse recovery current
I
RM
5.5
7.0
A
Typical stored charge
Q
rr
150
-
nC
Typical forward
recovery time
at I
F
= 8 A, di/dt = 64 A/s,
V
F
= 1.1 x V
F
max
t
fr
150
-
ns
THERMAL CHARACTERISTICS (T
C
= 25 C unless otherwise noted)
PARAMETER
SYMBOL UH8JT
UHF8JT
UNIT
Typical thermal resistance from junction to case
R
JC
2.0
4.0
C/W
ELECTRICAL CHARACTERISTICS (T
C
= 25 C unless otherwise noted)
PARAMETER
TEST CONDITIONS
SYMBOL
TYP.
MAX.
UNIT
ORDERING INFORMATION
PACKAGE
PREFERRED P/N
UNIT WEIGHT (g)
PACKAGE CODE
BASE QUANTITY
DELIVERY MODE
TO-220AC
UH8JT-E3/45
1.83
45
50/Tube
Tube
ITO-220AC
UHF8JT-E3/45
2.05
45
50/Tube
Tube
Figure 1. Maximum Forward Current Derating Curve
Case Temperature (C)
A
v
er
age F
o
r
w
ard Re
ctified C
u
rrent (A)
12.0
10.0
8.0
6.0
4.0
2.0
0
25
50
75
100
125
150
175
Resistive or
Inductive Load
UHF8JT
UH8JT
Figure 2. Forward Power Loss Characteristics
T
D - tp/T
tp
D = 0.1
D = 0.2
D = 0.3
D = 0.5
D = 0.8
D = 1.0
0
0
2
4
6
8
10
12
14
16
1
2
3
4
5
6
7
8
9
Average Forward Current (A)
A
v
er
age P
o
w
er Loss (
W
)
Document Number 88956
21-Apr-06
www.vishay.com
3
UH8JT & UHF8JT
Vishay General Semiconductor
Figure 3. Maximum Non-Repetitive Peak Forward Surge Current
Figure 4. Typical Instantaneous Forward Characteristics
Figure 5. Typical Reverse Leakage Characteristics
0
1
10
100
100
80
60
40
20
Number of Cycles at 60 Hz
Pe
a
k
F
o
r
w
ard S
u
rge C
u
rrent (A)
T
J
= 25 C
T
J
= 175 C
T
J
= 125 C
Instantaneous Forward Voltage (V)
Instantaneo
u
s F
o
r
w
ard C
u
rrent (A)
100
10
1
0.1
0.2 0.4 0.6 0.8
1
1.2 1.4 1.6 1.8
2
2.2 2.4 2.6 2.8
1000
100
10
10
20
30
40
50
60
70
80
90
100
1
0.1
0.01
0.001
T
J
= 125 C
T
J
= 175 C
T
J
= 25 C
Percent of Rated Peak Reverse Voltage (%)
Instantaneo
u
s Re
v
erse C
u
rrent (
A)
Figure 6. Typical Junction Capacitance
Figure 7. Typical Transient Thermal Impedance
Figure 8. Typical Transient Thermal Impedance
Reverse Voltage (V)
J
u
nction Capacitance (pF)
1000
100
10
1
1
10
100
0.1
10
1
0.1
0.01
0.1
1
10
100
t - Pulse Duration (s)
T
r
ansient Ther
mal
Impedance
(C/
W
)
UH8JT
10
1
0.01
0.1
1
10
100
t - Pulse Duration (s)
T
r
ansient Ther
mal
Impedance
(C/
W
)
UHF8JT
www.vishay.com
4
Document Number 88956
21-Apr-06
Vishay General Semiconductor
UH8JT & UHF8JT
PACKAGE OUTLINE DIMENSIONS in inches (millimeters)
0.154 (3.91)
0.148 (3.74)
DIA.
0.113 (2.87)
0.103 (2.62)
0.185 (4.70)
0.175 (4.44)
0.055 (1.39)
0.045 (1.14)
0.145 (3.68)
0.135 (3.43)
0.350 (8.89)
0.330 (8.38)
0.160 (4.06)
0.140 (3.56)
0.037 (0.94)
0.027(0.68)
0.205(5.20)
0.195(4.95)
0.560 (14.22)
0.530 (13.46)
0.022(0.56)
0.014(0.36)
0.110 (2.79)
0.100 (2.54)
1
2
1.148 (29.16)
1.118 (28.40)
0.105 (2.67)
0.095 (2.41)
0.635 (16.13)
0.625 (15.87)
0.603 (15.32)
0.573 (14.55)
PIN
0.415 (10.54) MAX.
0.370 (9.40)
0.360 (9.14)
0.057 (1.45)
0.045 (1.14)
CASE
PIN 2
PIN 1
TO-220AC
0.404 (10.26)
0.384 (9.75)
See note
0.076 Ref.
(1.93) ref.
45 Ref.
0.600 (15.24)
0.580 (14.73)
PIN
1
2
0.560 (14.22)
0.530 (13.46)
0.025 (0.64)
0.015 (0.38)
0.035 (0.89)
0.025 (0.64)
0.205 (5.21)
0.195 (4.95)
0.057 (1.45)
0.045 (1.14)
0.191 (4.85)
0.171 (4.35)
0.671 (17.04)
0.651 (16.54)
0.076 Ref.
(1.93) Ref.
See note
7 Ref.
0.140 (3.56) DIA.
0.125 (3.17) DIA.
7 Ref.
0.350 (8.89)
0.330 (8.38)
0.190 (4.83)
0.170 (4.32)
0.110 (2.79)
0.100 (2.54)
0.135 (3.43) DIA.
0.122 (3.08) DIA.
7 Ref.
0.110 (2.79)
0.100 (2.54)
0.028 (0.71)
0.020 (0.51)
ITO-220AC
exposure
(0.25)
0.010
Max.
Copper
Note: Copper exposure is allowable for 0.005 (0.13) Max. from the body
Legal Disclaimer Notice
Vishay
Document Number: 91000
www.vishay.com
Revision: 08-Apr-05
1
Notice
Specifications of the products displayed herein are subject to change without notice. Vishay Intertechnology, Inc.,
or anyone on its behalf, assumes no responsibility or liability for any errors or inaccuracies.
Information contained herein is intended to provide a product description only. No license, express or implied, by
estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Vishay's
terms and conditions of sale for such products, Vishay assumes no liability whatsoever, and disclaims any express
or implied warranty, relating to sale and/or use of Vishay products including liability or warranties relating to fitness
for a particular purpose, merchantability, or infringement of any patent, copyright, or other intellectual property right.
The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications.
Customers using or selling these products for use in such applications do so at their own risk and agree to fully
indemnify Vishay for any damages resulting from such improper use or sale.
PDF 
ZIP