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STTH208U

P1-P3P4-P5
1/5
STTH208/U
January 2003 - Ed: 1
HIGH VOLTAGE ULTRAFAST RECTIFIER
®
The STTH208, which is using ST ultrafast high
voltage planar technology, is specially suited for
free-wheeling, clamping, snubbering, demagneti-
zation in power supplies and other power switching
applications.
DESCRIPTION
■
Low forward voltage drop
■
High reliability
■ High surge current capability
■ Soft switching for reduced EMI disturbances
■ Planar technology
FEATURES AND BENEFITS
Symbol Parameter Value Unit
V
RRM
Repetitive peak reverse voltage 800 V
V
(RMS)
RMS voltage 560 V
I
F(AV)
Average forward current Tl = 60°C δ =0.5 DO-15 2 A
Tl = 100°C δ =0.5 SMB 2
I
FSM
Forward surge current t = 8.3 ms DO-15 45 A
SMB 35
T
stg
Storage temperature range - 50 + 175 °C
Tj Maximum operating junction temperature + 175 °C
ABSOLUTE RATINGS (limiting values)
I
F(AV)
2A
V
RRM
800 V
Tj (max) 175 °C
V
F
(max) 1.25 V
MAIN PRODUCT CHARACTERISTICS
DO-15
STTH208
SMB
STTH208U
STTH208/U
2/5
Symbol Parameter Tests conditions Min. Typ. Max. Unit
I
R
Reverse leakage current V
R
= 800V Tj = 25°C 5 µA
Tj = 125°C 50
V
F
Forward voltage drop I
F
= 2 A Tj = 25°C 1.65 V
Tj = 150°C 0.89 1.25
To evaluate the maximum conduction losses use the following equation :
P=1.05xI
F(AV)
+0.10xI
F
2
(RMS)
STATIC ELECTRICAL CHARACTERISTICS
Symbol Parameter Value Unit
R
th (j-l)
Junction to lead L = 10 mm DO-15 40 °C/W
SMB 25
R
th (j-a)
Junction to ambient L = 10 mm DO-15 110
THERMAL PARAMETERS
Symbol Parameter Tests conditions Min. Typ. Max. Unit
t
rr
Reverse recovery time I
F
= 0.5 A
Irr = 0.25 A I
R
=1A
Tj = 25°C 75 ns
t
fr
Forward recovery time I
F
=2A
dI
F
/dt = 50 A/µs
V
FR
=1.1xV
F
max
Tj = 25°C 200 ns
V
FP
Forward recovery voltage 9 V
DYNAMIC ELECTRICAL CHARACTERISTICS
STTH208/U
3/5
P(W)
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4
δ = 1
δ = 0.05
δ = 0.5
δ = 0.2
δ = 0.1
I (A)
F(AV)
T
δ
=tp/T
tp
Fig. 1: Conduction losses versus average current.
I (A)
FM
0.1
1.0
10.0
100.0
0.00 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 2.50 2.75 3.00
V (V)
FM
T=150°C
(maximum values)
j
T=150°C
(typical values)
j
T=25°C
(maximum values)
j
Fig. 2: Forward voltage drop versus forward
current.
Z/R
th(j-c) th(j-c)
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.E-01 1.E+00 1.E+01 1.E+02 1.E+03
T
δ
=tp/T
tp
t (s)
p
δ = 0.5
δ = 0.2
δ = 0.1
Single pulse
Fig. 3-1: Relative variation of thermal impedance
junction ambient versus pulse duration (epoxy
FR4, L
leads
= 10mm) (DO-15).
Z/R
th(j-c) th(j-c)
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.E-01 1.E+00 1.E+01 1.E+02 1.E+03
T
δ
=tp/T
tp
t (s)
p
δ = 0.5
δ = 0.2
δ = 0.1
Single pulse
Fig. 3-2: Relative variation of thermal impedance
junction ambient versus pulse duration (epoxy
FR4, S=1cm
2
) (SMB).
R (°C/W)
th(j-a)
0
10
20
30
40
50
60
70
80
90
100
110
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
S(cm²)
DO-15
L =10mm
leads
SMB
Fig. 4: Thermal resistance junction to ambient
versus copper surface under each lead (epoxy
printed circuit board FR4, copper thickness:
35µm).
P1-P3P4-P5

STTH208U

Mfr. #:
Buy STTH208U
Manufacturer:
STMicroelectronics
Description:
Rectifiers 2.0 Amp 800 Volt
Lifecycle:
New from this manufacturer.
Delivery:
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