PESDLC553T5VU
Low Capacitance ESD Protector
Description
The PESDLC553T5VU is a TVS array designed to protect I/O or data lines
from the damaging effects of ESD. It is low capacitance transient voltage
suppressors for high speed data interface that designed to protect
sensitive electronics from damage or latch-up due to ESD lightning, and
other voltage induced transient events. The SOT-553 is a very small
package which allows space saving on high density printed circuit board
and also gives the designer the flexibility to provide four I/O lines protection.
All pins are rated to withstand 15kV ESD pulses using the IEC61000-4-2
air discharge method, which can meet the requirement of level 4.
1
2
3
5
4
Feature
SOT-553 package
Low clamping voltage
Working voltage: 5V
Low leakage current
ESD protection > 15kV
Monolithic structure
RoHS compliant
100W peak pulse power(tp=8/20us)
Complies with the following standards: IEC
61000-4-2(ESD)air±15kV,contact±8V
Applications
Communication systems & cellular phones
Printers
Notebook and hand hold computers
PDAs
Video equipment
Protects three bidirectional lines and four Unidirectional lines
Mechanical Characteristics
Lead finish:100% matte Sn(Tin)
Mounting position: Any
Qualified max reflow temperature:260℃
Device meets MSL 1 requirements
Pure tin plating: 7 ~ 17 um
Pin flatness:≤3mil
Rev.06
1
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Low Capacitance ESD Protector
Electronics Parameter
Symbol
V
RWM
I
R
V
BR
I
T
I
PP
V
C
P
PP
C
J
I
F
V
F
PESDLC553T5VU
Parameter
Peak Reverse Working Voltage
Reverse Leakage Current @ V
RWM
Breakdown Voltage @ I
T
Test Current
Maximum Reverse Peak Pulse Current
Clamping Voltage @ I
PP
Peak Pulse Power
Junction Capacitance
Forward Current
Forward Voltage @ I
F
I
PP
V
C
V
BR
V
RWM
I
R
V
F
I
T
I
F
I
V
Electrical characteristics per line@25℃( unless otherwise specified)
Parameter
Reverse Stand-off Voltage
Reverse Breakdown Voltage
Reverse Leakage Current
Clamping Voltage
Clamping Voltage
Junction Capacitance
Symbol
V
RWM
V
BR
I
R
V
C
V
C
C
j
Conditions
Min.
Typ.
Max.
5
Units
V
V
μA
V
V
pF
I
t
= 1mA
V
RWM
= 5V T=25℃
I
PP
= 1A
I
PP
=3A
V
R
=0V
t
P
= 8/20μＳ
t
P
= 8/20μＳ
f = 1MHz
6.1
6.7
0.005
7.2
1
8.8
11.8
10
14
Absolute maximum rating@25℃
Rating
Peak Pulse Power (t
p
=8/20μs)
Forward voltage@10mA
Operating Temperature
Storage Temperature
Note：Pin
1, 3, 4, 5 to Pin 2
Symbol
P
pp
V
F
T
J
T
STG
Value
100
1.5
-55 to +125
-55 to +125
Units
W
V
℃
℃
Rev.06
2
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Low Capacitance ESD Protector
Typical Characteristics
16
V
C
– Clamping Voltage - V
PESDLC553T5VU
12
8
4
0
0
2
4
6
8
10
Fig.1 Typical Clamping Voltage VS Peak Pulse Current for PESDLC553T5VU
t
f
=8μs
I
PP
100
80
60
40
20
0
0
5
Test
Waveform
Parameters
t
f
=8us
t
p
=20us
100
% Of Rated Power
80
60
40
20
0
I
PP
– Peak Pulse Current - % of
t
P
=20μs(I
PP
/2)
10
15
t - Time -μs
20
25
30
0
25
50
75
100
125
150
T
L
– Lead Temperature -
℃
Fig 2.Pulse Waveform
Fig 3.Power Derating Curve
Rev.06
3
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Low Capacitance ESD Protector
Solder Reflow Recommendation
Peak Temp=257℃, Ramp Rate=0.802deg.
℃/sec
280
PESDLC553T5VU
240
200
160
120
80
40
0
0
30
60
90
120
150
180
210
240
270
300
330
360
390
420
450
480
Time (sec)
PCB Design
For TVS diodes a low-ohmic and low-inductive path to chassis earth is absolutely mandatory in order to achieve good ESD
protection. Novices in the area of ESD protection should take following suggestions to heart:
Do not use stubs, but place the cathode of the TVS diode directly on the signal trace.
Do not make false economies and save copper for the ground connection.
Place via holes to ground as close as possible to the anode of the TVS diode.
Use as many via holes as possible for the ground connection.
Keep the length of via holes in mind! The longer the more inductance they will have.
Product dimension (SOT-553)
A
G
E
(5)
B
F
(1)
C
D
H
Rev.06
4
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Low Capacitance ESD Protector
PESDLC553T5VU
Millimeters
Dim
MIN
A
B
C
D
E
F
G
H
0.17
0.50
1.50
0.10
0.08
1.50
1.10
0.50BSC
0.27
0.60
1.70
0.30
0.16
0.007
0.020
0.059
0.004
0.003
Inches
MIN
0.059
0.043
0.020BSC
0.011
0.024
0.067
0.012
0.006
MAX
1.70
1.30
MAX
0.067
0.051
0.5
0.5
2.2
1.2
1.7
0.5
0.375
Unit:mm
Ordering information
Device
PESDLC553T5VU
Package
SOT-553 (Pb-Free)
Shipping
3000 / Tape & Reel
Rev.06
5
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