SGS Thomson Microelectronics STTH112U, STTH112, STTH112A Datasheet
®
HIGH VOLTAGE ULTRAFAST RECTIFIER
MAIN PRODUCT CHARACTERISTICS
STTH112/A/U
I
F(AV)
V
RRM
1A
1200 V
Tj (max) 175 °C
(max) 1.65 V
V
F
FEATURES AND BENEFITS
Low forward voltage drop
■
High reliability
■
■ High surge current capability
■ Soft switching for reducedEMI disturbances
■ Planar technology
DO-41
STTH112
DESCRIPTION
The STTH112, which is using ST ultrafast high
voltage planar technology, is specially suited for
free-wheeling, clamping, snubbering, demagnetizationinpowersuppliesandother power switching
SMA
STTH112A
SMB
STTH112U
applications.
ABSOLUTE RATINGS (limiting values)
Symbol Parameter Value Unit
V
V
(RMS)
I
F(AV)
RRM
Repetitive peak reverse voltage 1200 V
RMS voltage 850 V
Average forward current Tl = 85°C δ =0.5 DO-41 1 A
Tl = 115°C δ =0.5 SMA
Tl = 125°C δ =0.5 SMB
I
FSM
Forward surge current t = 8.3 ms DO-41 20 A
SMA 18
SMB
T
stg
Storage temperature range - 50 + 175 °C
Tj Maximum operating junction temperature + 175 °C
January 2003 - Ed: 2
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STTH112/A/U
THERMAL PARAMETERS
Symbol Parameter Value Unit
R
th (j-l)
Junction to lead L = 10 mm DO-41 45 °C/W
SMA 30
SMB 25
R
th (j-a)
Junction to ambient L = 10 mm DO-41 110
STATIC ELECTRICAL CHARACTERISTICS
Symbol Parameter Tests conditions Min. Typ. Max. Unit
I
R
Reverse leakage current VR= 1200V Tj = 25°C 5 µA
Tj = 125°C 50
V
Forward voltage drop IF= 1 A Tj = 25°C 1.9 V
F
Tj = 125°C 1.17 1.65
To evaluate the maximum conduction losses use the following equation :
P=1.35xI
F(AV)
+0.3xI
F2(RMS)
DYNAMIC ELECTRICAL CHARACTERISTICS
Symbol Parameter Tests conditions Min. Typ. Max. Unit
t
rr
Reverse recovery time IF= 0.5 A
Irr = 0.25 A IR=1A
t
fr
V
FP
Forward recovery time IF=1A
Forward recovery voltage 30 V
dIF/dt = 50 A/µs
VFR=1.1xVFmax
Fig.1: Conduction losses versusaverage current.
P(W)
2.2
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2
δ = 0.05
δ = 0.1
I (A)
F(AV)
δ = 0.2
δ = 0.5
δ
=tp/T
δ = 1
T
tp
Tj = 25°C 75 ns
Tj = 25°C 500 ns
Fig. 2: Forward voltage drop versus forward
current.
I (A)
FM
100.0
T=125°C
j
(maximum values)
T=125°C
10.0
1.0
0.1
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
j
(typical values)
V (V)
FM
T=25°C
j
(maximum values)
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