ESDALC5-1BT2, ESDALC5-1BM2
Datasheet
Single-line low capacitance Transil, transient surge voltage suppressor (TVS) for
ESD protection
Features
•
•
•
•
•
•
•
•
Single-line bidirectional protection
Breakdown voltage = 5.8 V min.
Low capacitance = 26 pF at 0 V
Lead-free packages
ECOPACK2 compliant component
Benefits
–
Low capacitance for optimized data integrity
–
Low leakage current < 60 nA
–
Low PCB space consumption: 0.6 mm²
–
High reliability offered by monolithic integration
Complies with IEC 61000-4-2 (exceeds level 4)
–
±30 kV (air discharge)
–
±30 kV (contact discharge)
Complies MIL STD 883G - Method 3015-7: class 3
–
Human body model
Application
Where transient overvoltage protection in ESD sensitive equipment is required, such
as:
Product status link
ESDALC5-1BT2, ESDALC5-1BM2
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•
•
•
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Computers
Printers
Communication systems
Cellular phone handsets and accessories
Video equipment
Description
The ESDALC5-1BM2 (SOD882) and ESDALC5-1BT2 (SOD882T) are bidirectional
single-line TVS diodes designed to protect data lines or other I/O ports against ESD
transients.
These devices are ideal for applications where both reduced line capacitance and
board space saving are required.
DS6658 - Rev 7 - July 2023
For further information contact your local STMicroelectronics sales office.
www.st.com
ESDALC5-1BT2, ESDALC5-1BM2
Characteristics
1
Characteristics
Table 1. Absolute maximum ratings (Tamb = 25 °C)
Symbol
Parameter
Value
IEC 61000-4-2: contact discharge
30
IEC 61000-4-2: air discharge
30
VPP
Peak pulse voltage
PPP
Peak pulse power dissipation (8/20 µs), Tj initial = Tamb
IPP
Peak Pulse current (8/20 µs)
Tstg
Unit
kV
150
W
9
A
Storage temperature range
-65 to +150
°C
Tj
Junction temperature
-55 to +150
°C
TL
Maximum lead temperature for soldering during 10 s
260
°C
Figure 1. Electrical characteristics (definitions)
Table 2. Electrical characteristics (values) (Tamb = 25° C)
Symbol
VBR
IRM
Test conditions
Min.
Typ.
Max.
From I/O1 to I/O2, IR = 1 mA
11
13
17
From I/O2 to I/O1, IR = 1 mA
5.8
8
11
VR = 5 V
60
Unit
V
nA
Dynamic resistance, pulse width 100 ns
Rd
From I/O1 to I/O2
From I/O2 to I/O1
0.25
Ω
0.23
8 kV contact discharge after 30 ns IEC 61000 4-2:
VCL
From I/O1 to I/O2
From I/O2 to I/O1
CLINE
DS6658 - Rev 7
F = 1 MHz, VR = 0 V
16
V
11
26
30
pF
page 2/13
ESDALC5-1BT2, ESDALC5-1BM2
Characteristics (curves)
1.1
Characteristics (curves)
Figure 2. Peak pulse power versus initial junction
temperature (maximum values)
Figure 3. Leakage current versus junction temperature
(typical values)
PPP (W)
250
IR (nA)
1000
225
V R = V RM = 5 V
from I/O1 to I/O2
8/20µs
100
200
175
10
150
125
1
100
75
0.1
50
25
Tj (°C)
Tj (°C)
0.01
0
0
25
50
75
100
125
150
Figure 4. Leakage current versus junction temperature
(typical values)
1000
25
175
IR (nA)
50
75
100
125
150
Figure 5. Peak pulse power versus exponential pulse
duration (direct)
10000
PPP(W)
V R = V RM = 5 V
from I/O2 to I/O1
100
1000
10
100
1
10
0.1
T j (°C)
0.01
25
50
75
100
1
150
125
Figure 6. Clamping voltage versus peak pulse current
(typical values)
10
IPP (A)
10
100
1000
Figure 7. Clamping voltage versus peak pulse current
(typical values)
IPP (A)
10
8/20µs
T j initial = 25 °C
From I/O1 to I/O2
8/20µs
T j initial = 25 °C
From I/O2 to I/O1
1
1
VCL(V)
VCL(V)
0,1
TP(µs)
1
12
13
DS6658 - Rev 7
14
15
16
17
18
19
20
21
22
0.1
23
7
8
9
10
11
12
13
14
15
16
page 3/13
ESDALC5-1BT2, ESDALC5-1BM2
Characteristics (curves)
Figure 8. Junction capacitance versus reverse applied
voltage (typical values from I/O1 to I/O2)
Figure 9. Junction capacitance versus reverse applied
voltage (typical values from I/O2 to I/O1)
C(pF)
C(pF)
35
35
T j = 25 °C
F = 1 MHz
Vosc = 30 mV
from I/O1 to I/O2
30
T j = 25 °C
F = 1 MHz
Vosc = 30 mV
from I/O2 to I/O1
30
25
25
20
20
15
15
10
10
5
5
VR(V)
0
0
1
2
3
4
VR (V)
0
5
Figure 10. ESD response to IEC 61000-4-2 (+8 kV air
discharge)
0
1
3
4
5
Figure 11. ESD response to IEC 61000-4-2 (-8 kV air
discharge)
Figure 12. S21 attenuation measurement result
0
2
Figure 13. TLP measurements
dB
I PP (A)
20
-5
18
- 10
16
from I/O2 to I/O1
14
- 15
12
- 20
10
- 25
8
6
- 30
from I/O1 to I/O2
4
- 35
2
F(Hz)
- 40
100k
DS6658 - Rev 7
1M
10M
100M
1G
V CL (V)
0
0
5
10
15
20
25
page 4/13
ESDALC5-1BT2, ESDALC5-1BM2
Package information
2
Package information
In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK packages,
depending on their level of environmental compliance. ECOPACK specifications, grade definitions and product
status are available at: www.st.com. ECOPACK is an ST trademark.
2.1
SOD882 package information
Figure 14. SOD882 package outline
Table 3. SOD882 package mechanical data
Dimensions
Millimeters
Ref.
DS6658 - Rev 7
Inches
Min.
Typ.
Max.
Min.
Typ.
Max.
A
0.40
0.47
0.50
0.016
0.019
0.020
A1
0.00
0.05
0.000
b1
0.45
0.50
0.55
0.018
0.020
0.022
b2
0.45
0.50
0.55
0.018
0.020
0.022
D
0.95
1.00
1.05
0.037
0.039
0.041
E
0.55
0.60
0.65
0.022
0.024
0.026
e
0.60
0.65
0.70
0.024
0.026
0.028
L1
0.20
0.25
0.30
0.008
0.010
0.012
L2
0.20
0.25
0.30
0.008
0.010
0.012
0.002
page 5/13
ESDALC5-1BT2, ESDALC5-1BM2
SOD882 package information
Figure 15. Recommended footprint
Note:
Figure 16. Marking layout
Product marking may be rotated by multiples of 90° for assembly plant differentiation. In no case should this
product marking be used to orient the component for its placement on a PCB. Only pin 1 mark is to be used for
this purpose.
Figure 17. Tape outline
DS6658 - Rev 7
page 6/13
ESDALC5-1BT2, ESDALC5-1BM2
SOD882T package information
2.2
SOD882T package information
Figure 18. SOD882T package outline
Table 4. SOD882T package mechanical data
Dimensions
Millimeters
Ref.
Min.
DS6658 - Rev 7
Typ.
Inches
Max.
Min.
Typ.
Max.
A
0.30
0.40
0.012
0.016
A1
0.00
0.05
0.000
0.002
b1
0.45
0.50
0.55
0.018
0.020
0.022
b2
0.45
0.50
0.55
0.018
0.020
0.022
D
0.95
1.00
1.05
0.037
0.039
0.041
E
0.55
0.60
0.65
0.022
0.024
0.026
e
0.60
0.65
0.70
0.024
0.026
0.028
L1
0.20
0.25
0.30
0.008
0.010
0.012
L2
0.20
0.25
0.30
0.008
0.010
0.012
page 7/13
ESDALC5-1BT2, ESDALC5-1BM2
SOD882T package information
Figure 19. Recommended footprint
Note:
Figure 20. Marking layout
Product marking may be rotated by multiples of 90° for assembly plant differentiation. In no case should this
product marking be used to orient the component for its placement on a PCB. Only pin 1 mark is to be used for
this purpose.
Figure 21. Tape outline
DS6658 - Rev 7
page 8/13
ESDALC5-1BT2, ESDALC5-1BM2
Recommendations on PCB assembly
3
Recommendations on PCB assembly
3.1
Stencil opening design
Stencil opening thickness: 100 μm
Figure 22. Recommended stencil window position in mm (inches)
3.2
Solder paste
1.
2.
3.
4.
3.3
Placement
1.
2.
3.
4.
5.
6.
3.4
Manual positioning is not recommended.
It is recommended to use the lead recognition capabilities of the placement system, not the outline
centering.
Standard tolerance of ± 0.05 mm is recommended.
3.5 N placement force is recommended. Too much placement force can lead to squeezed out solder paste
and cause solder joints to short. Too low placement force can lead to insufficient contact between package
and solder paste that could cause open solder joints or badly centered packages.
To improve the package placement accuracy, a bottom side optical control should be performed with a high
resolution tool.
For assembly, a perfect supporting of the PCB (all the more on flexible PCB) is recommended during solder
paste printing, pick and place and reflow soldering by using optimized tools.
PCB design preference
1.
2.
DS6658 - Rev 7
Halide-free flux, qualification ROL0 according to ANSI/J-STD-004.
“No clean” solder paste recommended.
Offers a high tack force to resist component movement during high speed.
Solder paste with fine particles: powder particle size is 20-38 μm.
To control the solder paste amount, the closed via is recommended instead of open vias.
The position of tracks and open vias in the solder area should be well balanced. A symmetrical layout is
paste printing, pick and place and reflow soldering by using optimized tools.
page 9/13
ESDALC5-1BT2, ESDALC5-1BM2
Reflow profile
3.5
Reflow profile
Figure 23. ST ECOPACK recommended soldering reflow profile for PCB mounting
250
240-245 °C
Temperature (°C)
-2 °C/s
2 - 3 °C/s
60 sec
(90 max)
200
-3 °C/s
150
-6 °C/s
100
0.9 °C/s
50
Time (s)
0
Note:
DS6658 - Rev 7
30
60
90
120
150
180
210
240
270
300
Minimize air convection currents in the reflow oven to avoid component movement. Maximum soldering profile
corresponds to the latest IPC/JEDEC J-STD-020.
page 10/13
ESDALC5-1BT2, ESDALC5-1BM2
Ordering information
4
Ordering information
Figure 24. Ordering information scheme
Table 5. Ordering information
Order code
Marking(1)
Package
Weight
Base qty.
Delivery mode
ESDALC5-1BM2
G
SOD882
0.93 mg
12000
Tape and reel
ESDALC5-1BT2
H
SOD882T
0.82 mg
12000
Tape and reel
1. The marking can be rotated by multiples of 90° to differentiate assembly location
DS6658 - Rev 7
page 11/13
ESDALC5-1BT2, ESDALC5-1BM2
Revision history
Table 6. Document revision history
Date
Version
Changes
02-Feb-2010
1
Initial release.
06-Jun-2012
2
Updated Figure 11, Figure 12, Figure 15, Figure 19, Table 3, and Table 4.
Updated note in page 7, 8 and 13. Updated IRM in Table 2.
05-Mar-2013
3
Clamping voltage at 30 ns added in Table 2.
09-Jan-2014
4
Updated Table 1, Table 2, Table 5, Figure 2, Figure 3, Figure 4, Figure 5,
Figure 6, Figure 7, Figure 8, Figure 9, Figure 10, Figure 11, Figure 12, Figure
16, Figure 17, Figure 20, Figure 21 and Figure 24. Added Figure 14.
02-Apr-2014
5
Updated Figure 4 and Figure 5.
28-Nov-2016
6
Updated cover image, Table 2: "Electrical characteristics (Tamb = 25 °C)" and
Figure 2: "Electrical characteristics (definitions)".
04-Jul-2023
7
Updated Section Cover image, Section 2.1 SOD882 package information, and
Section 2.2 SOD882T package information.
Minor text changes.
DS6658 - Rev 7
page 12/13
ESDALC5-1BT2, ESDALC5-1BM2
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DS6658 - Rev 7
page 13/13