SZMD03C
Elektronische Bauelemente
24W, 3 V
Transient Voltage Suppressors
for ESD Protection (Uni-directional)
RoHS Compliant Product
A suffix of “-C” specifies halogen & lead-free
SOT-23
FEATURES
SOT-23 package for surface mount application
Protects 5V components
Protects two unidirectional line or one bi-direction line
Provides electrically is olated protection
K
A
L
3
3
Top View
1
2
C B
1
2
E
D
APPLICATIONS
Cellular Handsets and Accessories
Portable devices
Industrial Controls
Set -Top Box
Servers, Notebook, and Desktop PC
F
REF.
A
B
C
D
E
F
G
Millimeter
Min.
Max.
2.80
3.00
2.25
2.55
1.20
1.40
0.90
1.15
1.80
2.00
0.30
0.50
H
REF.
G
H
J
K
L
J
Millimeter
Min.
Max.
0.10 REF.
0.55 REF.
0.08
0.15
0.5 REF.
0.95 TYP.
Marking Code
KD9
3
1
2
ABSOLUTE RATINGS
(Tamb = 25°C )
Rating
Air contact
Contact discharge
ESD voltage
Per human body model
Total power dissipation on FR-5 Board (Note 1) @ T
A
=25℃
Junction and storage temperature range
Lead solder temperature – maximum (10 Second duration)
IEC 61000-4-2 (ESD)
Symbol
Value
±15
±8
16
150
-55 ~ +150
260
Units
kV
kV
kV
m/W
°C
°C
P
D
T
J
, T
STG
T
L
Stresses exceeding Maximum Ratings may damage the device. Maximum Rating are stress ratings only. Functional operation above the Recommended
Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability.
1. FR-5 = 1.0*0.75*0.62 in.
ELECTRICAL CHARACTERISTICS
(Ratings at 25°C ambient temperature unless otherwise specified. V
F
= 0.9V at I
F
= 10mA)
I
PP
V
C
(V)
V
BR
(V)
V
RWM
I
R
(uA)
I
T
P
PK
@ Max I
PP
(A)
Device
(V)
@ V
RWM
@ I
T
(Note 2)
(mA)
(W)*
(Note 3)
(Note 3)
C
(pF)
(Note 4)
SZMD03C
Max
3
Max
5.0
Min
5.2
mA
5.0
Max
8.0
Max
3.0
Max
24
Typ
190
Other voltages available upon request.
2. V
BR
is measured with a pulse test current I
T
at an ambient temperature of 25℃
3. Surge current waveform per Figure 3.
4. Measured at 1MHz 0V.
http://www.SeCoSGmbH.com/
Any changes of specification will not be informed individually.
01-June-2002 Rev. A
Page 1 of 2
SZMD03C
Elektronische Bauelemente
24W, 3 V
Transient Voltage Suppressors
for ESD Protection (Uni-directional)
RATINGS AND CHARACTERISTICS CURVES
Clamping Voltage vs. Peak Pulse Current
12
Power Derating Curve
110
100
% of Rated Power or I
PP
6
Clamping Voltage - V
C
(V)
10
8
6
4
2
0
0
1
2
3
4
Waveform
Parameters
tr = 8µs
td = 20µS
90
80
70
60
50
40
30
20
10
0
5
0
25
50
75
100
o
125
150
Peak Pulse Current - I
PP
(A)
Ambient Temperature - T
A
( C)
110
100
90
80
Pulse Waveform
Wave form
Paramete rs:
tr = 8 s
td = 20 s
e
-t
Applications Information
Device Connection Options
The SZMD series is designed to protect one
bi-directional or two uni-directional data or l/O lines
operating at 3 volts.Connection options are as
follows:
‧Bidirectional:Pin
1 is connected to the data line and
pin 2 is connected to ground (Since the device lls
symmetrical,these conmtions may be re- Ver3ed).For
best results,the ground connection should be made
directly to a ground plane on the board.The path
length should be kept as short as possible to minimize
parasitic inductance-Pin 3 is not
connected.
‧Unidirectional:Data
lines are connected
to pin1 and pin2.Pin 3 is connected to ground.For
best results,this pin should be connected directly to a
ground plane on the board.The path lengh should be
kept as short as possible to minimize parasitic
inductance. Circuit Board Layout Recommendations
for suppres- sion of ESD. Good circuit board layout is
critical for the suppression of fast rise-time transients
such as ESD.The following guidelines are
recommended (Refer to application note Sl99.01 for
more detailed information):
‧Place
the TVS near the
input terminals or connec- tors to restrict transient
coupling.
‧Minimize
the path length between the
TVS and the protected line.
‧Minimize
all conductive
loops including power and ground loops.
‧The
ESD
transient return path toground should be kept as short
as possible.
‧Never
run critical signals near board
edges
‧Use
ground planes whenever possib|e.
Percent of I
PP
70
60
50
40
30
20
10
0
0
5
10
td = I
PP
/2
15
20
25
30
Time (us)
http://www.SeCoSGmbH.com/
Any changes of specification will not be informed individually.
01-June-2002 Rev. A
Page 2 of 2
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