lesda6v1lt1g

LESHAN RADIO COMPANY, LTD.
Dual transil array for ESD protection
LESDA5V3LT1G
LESDA6V1LT1G
LESDA14V2LT1G
LESDA25VLT1G
General Description
The LESDA5V3LT1G 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 bidirectionnal suppressor by connecting
only pin1 and 2.
3
1
2
Applications
SOT– 23
z Computers
z Printers
z Communication systems
It is particulary recommended for the RS232 I/O
port protection where the line interface withstands
only with 2kV ESD surges.
Features
z
2 Unidirectional Transil functions
z
z
z
Low leakage current: IR max< 20 μA at VBR
3 00W peak pulse power(8/20μs)
High ESD protection level: up to 25 kV
O rdering Information
Benefits
z
z
z
High ESD protection level
up to 25 kV. High integration.
Suitable for high density boards.
Device
Complies with the following standards
Marking
Shipping
LESDA5V3LT1G
E53
3000/Tape&Reel
LESDA5V3LT3G
E53
10000/Tape&Reel
LESDA6V1LT1G
E61
3000/Tape&Reel
LESDA6V1LT3G
E61
10000/Tape&Reel
IEC61000-4-2 Level 4
LESDA14V2LT1G
E14
3000/Tape&Reel
MIL STD 883c - Method 3015-6 Class 3
LESDA14V2LT3G
E14
10000/Tape&Reel
(Human Body Model)
LESDA25VLT1G
E25
3000/Tape&Reel
LESDA25VLT3G
E25
10000/Tape&Reel
Absolute Ratings (Tamb=25°C )
Symbol
Parameter
Value
Units
PPP
Peak Pulse Power (tp = 8/20μs)
300
W
TL
Maximum lead temperature for soldering during 10s
260
°C
Tstg
Storage Temperature Range
-55 to +15
°C
Top
Operating Temperature Range
-40 to +125
°C
Tj
Maximum junction temperature
150
°C
Electrostatic discharge
VPP
MIL STD 883C -Method 3015-6
25
IEC61000-4-2 air discharge
16
IEC61000-4-2 contact discharge
9
kv
Rev.O 1/5
LESHAN RADIO COMPANY, LTD.
LESDA5V3LT1G, LESDA6V1LT1G, LESDA14V2LT1G,LESDA25VLT1G
Electrical Parameter
Symbol
Parameter
VRM
Stand-off voltage
VBR
Breakdown voltage
VCL
Clamping voltage
IRM
Leakage current
IPP
Peak pulse current
αT
Voltage temperature coefficient
VF
Forward voltage drop
C
Capacitance
Rd
Dynamic resistance
Electrical Characteristics
Part Numbers
VBR
VF
VRM
IRM
Rd
αT
Typ.(1)
Max.(2)
C
Min.
Max.
v
v
v
µA
v
mA
mΩ
10-4/°C
pF
LESDA5V3LT1G
5.3
5.9
3
2
1.25
200
280
5
220
LESDA6V1LT1G
6.1
7.2
5.25
20
1.25
200
350
6
140
LESDA14V2LT1G
14.2
15.8
12
5
1.25
200
650
10
90
LESDA25VLT1G
25
30
24
1
1.2
10
1000
10
50
1.Square pulse IPP=15A,tp=2.5µs
Max.
IF
Typ. 0v bias
2.△VBR=aT*(Tamb-25°C)*VBR(25°C)
Typical Characteristics
Fig1.Peak power dissipation versus
Initial junction temperature
Fig2. Peak pulse power versus exponential
pulse duration(Tj initial=25°C)
Rev.O 2/5
LESHAN RADIO COMPANY, LTD.
LESDA5V3LT1G, LESDA6V1LT1G, LESDA14V2LT1G,LESDA25VLT1G
Fig3. Clamping voltage versus peak
pulse current(Tj initial=25°C,
rectangular Waveform,tp=2.5μs)
Fig4. Capacitance versus reverse
Applied voltage
Fig5.Relative variation of leakage current
Versus junction temperature
Fig6. Peak forward voltage drop versus
peak forward current
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 ESDAxxL 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.
Rev.O 3/5
LESHAN RADIO COMPANY, LTD.
LESDA5V3LT1G, LESDA6V1LT1G, LESDA14V2LT1G,LESDA25VLT1G
Rev.O 4/5
LESHAN RADIO COMPANY, LTD.
LESDA5V3LT1G, LESDA6V1LT1G, LESDA14V2LT1G,LESDA25VLT1G
SOT-23
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M,1982
2. CONTROLLING DIMENSION: INCH.
A
L
3
1
V
2
DIM
B S
G
C
D
H
K
J
MIN
0.1102
0.0472
0.0350
0.0150
0.0701
0.0005
0.0034
0.0140
0.0350
0.0830
0.0177
A
B
C
D
G
H
J
K
L
S
V
INCHES
MAX
0.1197
0.0551
0.0440
0.0200
0.0807
0.0040
0.0070
0.0285
0.0401
0.1039
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
0.037
0.95
0.037
0.95
0.079
2.0
0.035
0.9
0.031
0.8
inches
mm
Rev.O 5/5