Weitron ESDA14V2 Dual transil arr ay for esd protection Datasheet

ESDAxx Series
Dual transil array for ESD protection
P b Lead(Pb)-Free
Description:
* The ESDAxx 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.
ELECTROSTATIC
DISCHARGE
300 WATTS
5.3/6.1/14.2/25 VOLTS
3
1
2
Features:
* 2 Unidirectional Transil functions
* Low leakage current: IR max< 20 μA at VBR
* 300W peak pulse power(8/20μs)
* High ESD protection level: up to 25 kV
* Complies with the following standards:
IEC61000-4-2 Level 4
MIL STD 883c - Method 3015-6 Class 3(Human Body Model)
SOT-23
Eqivalent Circuit Diagram:
Application:
* Computers
* Printers
* Communication systems
* It is particulary recommended for the RS232 I/O port protection where
the line interface withstands only with 2kV ESD surges.
Bidirectional
Configuration
Mechanical Data:
* Case : Molded Epoxy
* Marking : Marking Code
* Weight : 0.008 grams(approx)
SOT-23 Outline Dimensions
Unit:mm
A
B
TOP VIEW
E
G
C
D
H
K
J
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L
M
1/3
Dim
A
B
C
D
E
G
H
J
K
L
M
Min
0.35
1.19
2.10
0.85
0.46
1.70
2.70
0.01
0.89
0.30
0.076
Max
0.51
1.40
3.00
1.05
1.00
2.10
3.10
0.13
1.10
0.61
0.25
26-Apr-07
ESDAxx Series
Maximum Ratings(TA=25˚C Unless Otherwise Noted)
Symbol
Value
Unit
Peak Pulse Power Dissipation (t P= 8/20μs)
PPP
300
W
Lead Soldering Temperature
TL
260(10s)
°C
Junction Temperature Range
TJ
150
°C
Operating Temperature Range
Top
-40 to +125
°C
Storage Temperature Range
Tstg
-55 to +150
°C
Electrostatic discharge
MILSTD 833C-Method 3015-6
IEC61000-4-2 Air discharge
IEC61000-4-2 ContactAir discharge
VPP
25
16
9
kv
Characteristic
Electrical Characteristics
Part
Numbers
VBR
IR
VRM
IRM
VF
Rd
αT
C
Typ(1)
Max(2)
Typ. 0v bias
Min.
Max.
ESDA5V3
V
5.3
V
5.9
mA
1
V
3
µA
2
V
1.25
mA
200
mΩ
280
10-4/°C
5
pF
220
ESDA6V1
6.1
7.2
1
5.25
20
1.25
200
350
6
140
ESDA14V2
14.2
15.8
1
12
5
1.25
200
650
10
90
25
30
1
24
1
1.2
10
1000
10
50
ESDA25
Max.
IF
1. Square pulse IPP=15A, tp=2.5µs.
2. ∆VBR=aT*(Tamb-25°C) * VBR(25°C).
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
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26-Apr-07
ESDAxx Series
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
3000
1000
Ppp(W)
PPP(Tj initial)/PPP(Tj initial=25ºC)
Typical Characteristics
0
25
50
75
100
125
100
0
150
0
10
Tj initial(ºC)
Fig.1 Peak power dissipation vs
Initial junction temperature
50.0
ESDA5V3
ESDA6V1
Fig.2 Peak pulse power vs exponential
pulse duration(Tj =25°C)
200
ESDA14V2
100
C(pF)
IPP(A)
ESDA6V1
1.0
50
ESDA14V2
20
tp=2.5µs
0
5
0
10 15 20 25 30 35 40 45 50 55 60 65 70 75 80
ESDA25
1
2
5
Vcl(V)
10
20
50
VR(V)
Fig.3 Clamping voltage vs peak pulse current
(Tj =25°C, rectangular waveform, tp=2.5µs)
Fig.4 Capacitance vs Reverse applied voltage
200
5.0
Tj=25ºC
100
ESDA5V3
1.0
ESDA6V1~ESDA14V2
ESDA14V2
ESDA6V1
ESDA25
IFM(A)
IR(Tj) / IR(Tj=25ºC)
F=1MHz
Vosc=30mV
ESDA5V3
ESDA25
10.0
0.1
100
tp(µs)
ESDA25
10
0.1
ESDA5V3
1
25
50
75
100
125
0.01
Tj(ºC)
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0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
VFM(V)
Fig.5 Relative varation of leakage current vs
Versus junction temperature
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0.0
Fig.6 Peak forward voltage drop vs
peak forward current
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26-Apr-07
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