Transient Voltage Suppressors
Features
Small Body Outline Dimensions:
0.039″x 0.024″(1.0 mm x 0.60 mm)
Protects one I/O or power line
Low Clamping Voltage
Ultra Low Capacitance:0.5pF
Working Voltage: 5 V
Low Leakage Current
Response Time is Typically < 1 ns
BDFN2A051U
ROHS
DFN-2L
IEC COMPATIBILITY (EN61000-4)
IEC 61000-4-2 (ESD) ±15kV (air), ±8kV (contact)
IEC 61000-4-4 (EFT) 40A (5/50ns)
Mechanical Characteristics
DFN-2L package
Molding compound flammability rating:
UL 94V-0
Marking: Marking Code
Packaging: Tape and Reel per EIA 481
RoHS/WEEE Compliant
Applications
Laptop Computers
Cellular Phones
Digital Cameras
Personal Digital Assistants (PDAs)
Schematic & PIN Configuration
DFN-2L (Top View)
1/4
Transient Voltage Suppressors
Absolute Maximum Rating
Rating
Symbol
Value
8KV (contact)
Electrostatic discharge Voltage (See Note1 ,2)
V
ESD
BDFN2A051U
ROHS
Units
Volts
15KV (air)
Operating Temperature
Storage Temperature
T
J
T
STG
-55 to + 125
-55 to +150
°C
°C
Electrical Parameters (T=25℃)
Symbol
Parameter
Maximum Reverse Peak Pulse Current
Clamping Voltage @
I
PP
Working Peak Reverse Voltage
I
I
F
I
PP
V
C
V
RWM
I
R
V
BR
I
T
I
F
V
F
Maximum Reverse Leakage Current @
V
RWM
Breakdown Voltage @
I
T
Test Current
V
C
V
BR
V
RWM
I
R
V
F
I
T
V
Forward Current
Forward Voltage @
I
F
I
PP
Electrical Characteristics
BDFN2A051U
Parameter
Reverse Stand-Off Voltage
Symbol
V
RWM
Conditions
5.0
I
T
=1mA
V
RWM
=5V, T=25°C
I
PP
=1A, t
p
=8/20
μs
V
R
= 0V, f= 1MHz
Minimum
Typical
Maximum
5.5
Units
V
Reverse Breakdown Voltage
Reverse Leakage Current
Clamping Voltage
Junction Capacitance
V
BR
I
R
V
C
C
j
6.0
1
8.5
0.5
V
μA
V
pF
12.5
0.8
Note1:
ESD Pulse Waveform according to IEC 61000-4-2. see Table1 and Figure4.
Note2:
ESD tests Setup see Figure 5.
2/4
Transient Voltage Suppressors
Typical Characteristics
Figure 1: Power Derating Curve
110
100
90
80
70
60
50
40
30
20
10
0
BDFN2A051U
ROHS
Figure 2: Insertion Loss
CH S21 LOG 6 dB / REF 0 dB
Percent of Rated Pow er for I
pp
0
25
50
75
100
125
150
START.030 MHz
STOP 3000.000000MHz
Ambient Temperature - T
A
(℃)
Figure 3: Normalized Junction Capacitance
vs. Reverse Voltage
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0
1
2
3
4
5
Table 1. IEC 61000-4-2 Discharge Parameters
F=1MHz
Level
First
Peak
Current
(A)
Peak
Current
at 30 ns
(A)
Peak
Current
at 60 ns
(A)
C
j
(V
R
)/C
j
(V
R
=0)
Test
Voltage
(Contact
Discharge)
(kV)
Test
Voltage
(Air
Discharge)
(kV)
1
2
3
4
Reverse Voltage -V
R
(V)
7.5
4
2
4
6
2
4
6
2
15
22.5
30
8
12
4
8
15
16
8
8
Figure 4. IEC 61000-4-2 Waveform
I
peak
100%
90%
Figure 5: ESD Clamping( 8kV Contact per
IEC 61000-4-2)
Tek Run: 2.50GS/s
Sample
I@30ns
I@60ns
10%
t
p
=0.7ns to 1ns
CH1 10.0 VΩ
M 20.0ns Ch1
3/4
Transient Voltage Suppressors
Outline Drawing –DFN-2L
PACKAGE OUTLINE
BDFN2A051U
ROHS
D
L1
e
h
SYMB
E
b
L1
1
2
1
L
2
BOTTOM VIEW
OL
A
A1
b
C
D
e
E
L
L1
h
DFN-2L
MILIMETER
MIN
NOM
MAX
0.45
0.50
0.55
0
0.02
0.05
0.45
0.50
0.55
0.12
0.15
0.18
0.95
1.00
1.05
0.65BSC
0.55
0.60
0.65
0.20
0.25
0.30
0.05REF
0.07
0.12
0.17
C
Land Pattern
A1
A
1.00
0.30
0.60
h
0.35
0.35
Marking Codes
Part Number
BDFN2A051U
Marking Code
1
UB
2
Package Information
10
Qty： k/Reel
0.60
4/4
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