LESHAN RADIO COMPANY, LTD.
Dual Transient Voltage Suppressors Array for ESD Protection
General Description
The LGSOT12CLT1G is a dual monolithic voltage
suppressor designed to protect components which
are connected to data and transmission lines against
ESD. It clamps the voltage just above the logic level
supply for positive transients, and to a diode drop
below ground for negative transients. It can also
work as bidirectional suppressor by connecting only
pin1 and 2.
LGSOT12CLT1G
3
1
2
SOT– 23
Applications
Computers
Printers
Communication systems
Features
2 Unidirectional Transil functions
Low leakage current: I
R
max< 20
μA
at V
RM
300W peak pulse power(8/20μs)
Transient protection for data lines as per
IEC61000-4-2(ESD)
15KV(air) 8KV(contact)
IEC61000-4-5(Lightning)
see I
PPM
below
ORDERING INFORMATION
Device
LGSOT12CLT1G
Package
SOT–23
Shipping
3000/Tape & Reel
Absolute Ratings (T
amb
=25
°C )
Symbol
Parameter
Value
Units
P
PP
T
L
T
stg
T
op
T
j
Peak Pulse Power (t
p
= 8/20μs)
Maximum lead temperature for soldering during 10s
Storage Temperature Range
Operating Temperature Range
Maximum junction temperature
Electrostatic discharge
300
260
-55 to +15
-40 to +125
150
W
°C
°C
°C
°C
V
PP
IEC61000-4-2 air discharge
IEC61000-4-2 contact discharge
15
8
kv
1/5
LESHAN RADIO COMPANY, LTD.
LGSOT12CLT1G
Electrical Parameter
Symbol
V
RM
V
BR
V
CL
I
RM
I
PPM
Parameter
Stand-off voltage
Breakdown
voltage
Clamping
voltage
Leakage
current
Peak
pulse current
Electrical Characteristics
Maximum
Rated
Stand-off
Part Numbers
Voltage
@ V
RM
V
RM
V
LGSOT04CLT1G
LGSOT05CLT1G
LGSOT08CLT1G
LGSOT12CLT1G
LGSOT15CLT1G
Minimum
Breakdown
Voltage
1mA
V
BR
V
5.0
6.0
8.5
13.3
16.7
Maximum
Clamping
Voltage
1A
1)
Maximum
Pulse Peak
Current
Leakage
Current
Maximum
Capacitance
0v, 1MHz
C
pF
300
220
190
90
60
5A
1)
tp=8/20us
I
PPM
I
RM
µA
20.0
20.0
5.0
1.0
1.0
V
CL
V
8.5
9.8
13.4
19.0
24
V
10.5
12.5
15.0
28.0
39.0
A
17
17
15
12
10
4.0
5.0
8.0
12.0
15.0
1).8/20 waveform used. (see fig2.)
Typical Characteristics
Fig1. Peak Pulse Power
VS Pulse Time
2/5
LESHAN RADIO COMPANY, LTD.
LGSOT12CLT1G
Fig2. Pulse Waveform
Fig3.Power Derating
3/5
LESHAN RADIO COMPANY, LTD.
LGSOT12CLT1G
Application Note
Electrostatic discharge (ESD) is a major cause of failure in electronic systems. Transient Voltage
Suppressors (TVS) are an ideal choice for ESD protection. They are capable of clamping the incoming transient
to a low enough level such that damage to the protected
semiconductor is prevented.
Surface mount TVS arrays offer the best choice for minimal lead inductance. They serve as parallel
protection elements, connected between the signal line to ground. As the transient rises above the operating
voltage of the device, the TVS array becomes a low impedance path diverting the transient current to ground.
The
LGSOT12CLT1G
array is the ideal board evel protection of ESD sensitive semiconductor components.
The tiny SOT23 package allows design flexibility in the design of high density boards where the space
saving is at a premium. This enables to shorten the routing and contributes to hardening againt ESD.
4/5
LESHAN RADIO COMPANY, LTD.
LGSOT12CLT1G
SOT-23
NOTES:
A
L
3
1
V
G
2
B S
DIM
A
B
C
D
G
H
J
K
L
S
V
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M,1982
2. CONTROLLING DIMENSION: INCH.
INCHES
MIN
MAX
0.1102
0.1197
0.0472
0.0551
0.0350
0.0440
0.0150
0.0200
0.0701
0.0807
0.0005
0.0040
0.0034
0.0070
0.0140
0.0285
0.0350
0.0401
0.0830
0.1039
0.0177
0.0236
MILLIMETERS
MIN
MAX
2.80
3.04
1.20
1.40
0.89
1.11
0.37
0.50
1.78
2.04
0.013
0.100
0.085
0.177
0.35
0.69
0.89
1.02
2.10
2.64
0.45
0.60
C
D
H
K
J
0.037
0.95
0.037
0.95
0.079
2.0
0.035
0.9
0.031
0.8
inches
mm
5/5
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