September 2009 Doc ID 14515 Rev 2 1/7
7
ETP01-xx21
Protection for Ethernet lines
Features
■Differential and common mode protection
■Telcordia GR1089 Intrabuilding: 100 A, 2/10 µs
■ITU-T K20/21: 40 A, 5/310 µs
■Low capacitance: 13 pF max at 0 V
■UL94 V0 approved resin
■SO8 package is JEDEC registered
Benefits
■Trisil™ technology is not subject to ageing and
provides a fail safe mode in short circuit for a
better protection.
■This series is used to help equipment to meet
main standards such as UL61950, IEC 950 /
CSA C22.2 and UL1459.
Complies with the following standards
■IEC 61000-4-2: Level 4
– 15 kV (air discharge)
– 8 kV (contact discharge)
■MIL STD 883E-Method 3015-7: class3:
– 25 kV (Human body model)
■TELCORDIA GR-1089 Core: 100 A, 2/10 µs
■ITU-T K20/21: 37.5 A, 5/310 µs
■IEC 61000-4-5: 4 kV, 42 Ω, 96 A, 8/20 µs
■IEC 61000-4-4 EFT : 40A (5/50ns)
Applications
This series can meet subscriber and central office
requirements.
■Protection against telecommunications surge
standards on:
– 10/100 Mbps Ethernet
– Ethernet Gigabit
– T1 / E1 line cards
Figure 1. Schematic diagram
Description
The ETP01 series is a low capacitance transient
surge arrestor designed for protection of high
debit rate communication network. Planar
technology used combines a high surge capability
to comply with Telcordia GR1089 Intrabuilding
and ITU-T K20/21, and low capacitance to avoid
distortion of high speed signals such as Ethernet.
TM: Trisil is a trademark of STMicroelectronics
SO-8
T1
GND
GND
T2
T1
GND
GND
T2
T1
GND
GND
T2
T1
GND
GND
T2
T1
GND
GND
T2
T1
GND
GND
T2
www.st.com
Characteristics ETP01-xx21
2/7 Doc ID 14515 Rev 2
1 Characteristics
Table 1. Absolute ratings (Tamb = 25 °C)
Symbol Parameter Value Unit
Ipp Peak pulse current(1)
1. Surge capability tested according to ITU-T K20/21 and Telcordia GR1089 Intrabuilding connections
(Metallic and Longitudinal tests).
5/310 µs 40 A
8/20 µs 100 A
2/10 µs 150 A
ITSM Non repetitive surge peak on state current t = 20 ms 8 A
Tstg
Tj
Storage temperature range
Operating junction temperature range
-55 to 150
-40 to 150 °C
TLMaximum temperature for soldering during 10 s 260 °C
Table 2. Electrical characteristics (Tamb = 25 °C)
Order
code
IRM @ VRM IRM @ VRM Vbo IHCC
µA
typ. VµA
max. VV
max.
mA
min.
pF
max.(1)
1. Test conditions: Capacitance between I/O and GND, VR = 0 V bias, VRMS = 1 V, F = 1 MHz
pF
max.(2)
2. Test conditions: Capacitance between I/O and I/O, VR = 0 V bias, VRMS = 1 V, F = 1 MHz
ETP01-
1621 0.01 3.3 1 16 25 30 16 13
ETP01-
2821 0.01 3.3 1 28 36 30 16 13
ETP01-xx21 Characteristics
Doc ID 14515 Rev 2 3/7
Figure 2. Non repetitive surge peak on-state current versus overload duration
0
1
10
100
1.E-02 1.E-01 1.E+00
I
TSM
(A)
F=50Hz
Tjinitial=25°C
t(s)
Figure 3. Junction capacitance versus
reverse voltage applied for
ETP01-1621 (typical values)
Figure 4. Junction capacitance versus
reverse voltage applied for
ETP01-2821 (typical values)
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
C(pF)
ETP01-1621
F=1MHz
VOSC=30mVRMS
Tj=25°C
I/O - Gnd
I/O – I/O
VLINE(V)
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
0 5 10 15 20 25 30
C(pF)
ETP01-2821
F=1MHz
VOSC=30mVRMS
Tj=25°C
I/O - Gnd
I/O – I/O
VLINE(V)
Application information ETP01-xx21
4/7 Doc ID 14515 Rev 2
2 Application information
Figure 5. Application schematic for Ethernet 10/100 Mbps
Figure 6. Recommended layout
RX-
RX-
RX+ RX+
TX-
TX-
TX+
TX+
75
75
RJ45 Connector
10/100Mbps Ethernet Transformer
10/100Mbps Ethernet Transceiver
2 x ETP01-xx21
DVIULC6-4SC6
75
75
RX-
RX-
RX+ RX+
TX-
TX-
TX+
TX+
75
75
RJ45 Connector
10/100Mbps Ethernet Transformer
10/100Mbps Ethernet Transceiver
2 x ETP01-xx21
DVIULC6-4SC6
75
75
T1 T1
T2 T2
GND
GND
GND
GND
T1 T1
T2 T2
GND
GND
GND
GND
ETP01-xx21 Package information
Doc ID 14515 Rev 2 5/7
3 Package information
●Epoxy meets UL94, V0
●Lead-free package
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.
Table 3. SO-8 dimensions
Ref.
Dimensions
Millimeters Inches
Min. Typ. Max. Min. Typ. Max.
A1.750.069
A1 0.1 0.25 0.004 0.010
A2 1.25 0.049
b 0.28 0.48 0.011 0.019
C 0.17 0.23 0.007 0.009
D 4.80 4.90 5.00 0.189 0.193 0.197
E 5.80 6.00 6.20 0.228 0.236 0.244
E1 3.80 3.90 4.00 0.150 0.154 0.157
e 1.27 0.050
h 0.25 0.50 0.010 0.020
L 0.40 1.27 0.016 0.050
L1 1.04 0.041
k0° 8°0° 8°
ppp 0.10 0.004
Figure 7. Footprint dimensions
in mm (inches)
Figure 8. Marking
E1
D
8
4
1
5
E
e
A
A2
bA1
ppp C
C
k
h x 45°
L
L1
Seating
Plane
C
6.8
(0.268)
4.2
(0.165)
1.27
(0.050)
0.6
(0.024)
â
XXXXX : Marking
ZZ : Manufacturing location
Y : Year
WW : week z z y w w
x x x x x x
Pin 1
â
XXXXX : Marking
ZZ : Manufacturing location
Y : Year
WW : week zz zz yy ww ww
xx xx xx xx xx xx
Pin 1
Ordering information ETP01-xx21
6/7 Doc ID 14515 Rev 2
4 Ordering information
5 Revision history
Table 4. Ordering information
Order code Marking Weight Base qty Delivery mode
ETP01-1621RL ETP162 0.08 g 2500 Tape and reel
ETP01-2821RL ETP282 0.08 g 2500 Tape and reel
Table 5. Document revision history
Date Revision Changes
04-Mar-2008 1 Initial release.
24-Sep-2009 2 Updated order code in Ta bl e 4 and surge values.
ETP01-xx21
Doc ID 14515 Rev 2 7/7
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