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STTH512
Ultrafast recovery - 1200 V diode
Main product characteristics
I
F(AV)
V
RRM
T
j
V
(typ) 1.25 V
F
(typ) 48 ns
t
rr
5 A
1200 V
175° C
Features and benefits
■ Ultrafast, soft recovery
■ Very low conduction and switching losses
■ High frequency and/or high pulsed current
operation
■ High reverse voltage capability
■ High junction temperature
■ Insulated package: TO-220FPAC
Electrical insulation = 2000 V
RMS
Capacitance = 12 pF
Description
The high quality design of this diode has
produced a device with low leakage current,
regularly reproducible characteristics and intrinsic
ruggedness. These characteristics make it ideal
for heavy duty applications that demand long term
reliability.
KA
A
K
TO-220AC
STTH512D
K
NC
DPAK
STTH512B
Order codes
Part Number Marking
STTH512D STTH512D
STTH512B STTH512B
STTH512B-TR STTH512B
STTH512FP STTH512FP
A
K
TO-220FPAC
STTH512FP
A
Such demanding applications include industrial
power supplies, motor control, and similar
mission-critical systems that require rectification
and freewheeling. These diodes also fit into
auxiliary functions such as snubber, bootstrap,
and demagnetization applications.
The improved performance in low leakage
current, and therefore thermal runaway guard
band, is an immediate competitive advantage for
this device.
March 2006 Rev 1 1/10
www.st.com
10
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Characteristics STTH512
1 Characteristics
Table 1. Absolute ratings (limiting values at 25° C, unless otherwise specified)
Symbol Parameter Value Unit
V
RRM
Repetitive peak reverse voltage 1200 V
TO-220AC / TO-220FPAC 30
I
F(RMS)
I
F(AV)
I
FRM
I
FSM
T
Table 2. Thermal parameters
RMS forward current
DPAK 10
Average forward current, δ = 0.5
TO-220AC / DPAK T
TO-220FPAC T
= 145° C
c
= 105° C
c
Repetitive peak forward current tp = 5 µs, F = 5 kHz square 60 A
Surge non repetitive forward current tp = 10 ms Sinusoidal 55 A
Storage temperature range -65 to + 175 °C
stg
T
Maximum operating junction temperature 175 °C
j
5A
Symbol Parameter Value Unit
TO-220AC / DPAK 2.5
R
th(j-c)
Table 3. Static electrical characteristics
Junction to case
TO-220FPAC 5.8
A
°C/W
Symbol Parameter Test conditions Min. Typ Max. Unit
(1)
I
R
V
1. Pulse test: tp = 5 ms, δ < 2 %
2. Pulse test: t
Reverse leakage current
(2)
Forward voltage drop
F
= 380 µs, δ < 2 %
p
= 25° C
j
Tj = 125° C 3 30
= 25° C
T
j
= 150° C 1.25 1.9
T
j
V
R
I
= 5 A
F
= V
RRM
5
2.2
T
To evaluate the conduction losses use the following equation:
P = 1.5 x I
Table 4. Dynamic characteristics
Symbol Parameter
t
rr
I
RM
Reverse recovery time
Reverse recovery current
F(AV)
+ 0.08 I
F2(RMS)
Test conditions
IF = 1 A, dIF/dt = -50 A/µs,
= 30 V, Tj = 25° C
V
R
= 1 A, dIF/dt = -100 A/µs,
I
F
= 30 V, Tj = 25° C
V
R
IF = 5 A, dIF/dt = -200 A/µs,
V
= 600 V, Tj = 125° C
R
Min. Typ Max. Unit
95
48 70
11 16 A
µA
VTj = 125° C 1.30 2.0
ns
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STTH512 Characteristics
Table 4. Dynamic characteristics
= 5 A, dIF/dt = -200 A/µs,
I
S Softness factor
Forward recovery time
t
fr
V
Forward recovery voltage
FP
F
= 600 V, Tj = 125° C
V
R
= 5 A dIF/dt = 50 A/µs
I
F
= 1.5 x V
V
FR
I
= 5 A, dIF/dt = 50 A/µs,
F
, Tj = 25° C
Fmax
Tj = 25° C
2
400 ns
9.5 V
Figure 1. Conduction losses versus
average current
P(W)
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
δ = 0.05
δ = 0.1
I (A)
F(AV)
δ = 0.2
δ = 0.5
δ
δ = 1
T
=tp/T
Figure 3. Relative variation of thermal
impedance junction to case
versus pulse duration
Z/R
th(j-c) th(j-c)
1.0
Single pulse
TO-220AC
0.9
DPAK
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
1.E-03 1.E-02 1.E-01 1.E+00
t (s)
p
Figure 5. Peak reverse recovery current
versus dI
/dt (typical values)
F
Figure 2. Forward voltage drop versus
forward current
I (A)
FM
50
45
40
35
30
25
20
15
10
tp
5
0
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
T=150°C
j
(maximum values)
T=150°C
j
(typical values)
V (V)
FM
Figure 4. Relative variation of thermal
impedance junction to case versus
pulse duration
Z/R
th(j-c) th(j-c)
1.0
Single pulse
TO-220FPAC
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
1.E-03 1.E-02 1.E-01 1.E+00 1.E+01
t (s)
p
Figure 6. Reverse recovery time versus dI
(typical values)
T=25°C
j
(maximum values)
F
/dt
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