DATA SH EET
Product specification 2004 Feb 18
DISCRETE SEMICONDUCTORS
PESDxS2UAT series
Double ESD protection diodes
in SOT23 package
2004 Feb 18 2
Philips Semiconductors Product specification
Double ESD protection diodes
in SOT23 package PESDxS2UAT series
FEATURES
Unidirectional ESD protection of up to two lines
Common-cathode configuration
Max. peak pulse power: Ppp = 330 W at tp= 8/20 µs
Low clamping voltage: V(CL)R = 20 V at Ipp =18A
Ultra-low reverse leakage current: IRM < 700 nA
ESD protection > 30 kV
IEC 61000-4-2; level 4 (ESD)
IEC 61000-4-5 (surge); Ipp = 18 A at tp= 8/20 µs.
APPLICATIONS
Computers and peripherals
Communication systems
Audio and video equipment
Data lines
CAN bus protection.
DESCRIPTION
Unidirectional double ESD protection diodes in common
cathode configuration in the SOT23 plastic package.
Designed to protect up to two transmission or data lines
against damage from ElectroStatic Discharge (ESD) and
other transients.
MARKING
Note
1. * = p : made in Hong Kong.
* = t : made in Malaysia.
* = W : made in China.
QUICK REFERENCE DATA
PINNING
TYPE NUMBER MARKING CODE(1)
PESD3V3S2UAT *7A
PESD5V0S2UAT *7B
PESD12VS2UAT *7C
PESD15VS2UAT *7D
PESD24VS2UAT *7E
SYMBOL PARAMETER VALUE UNIT
VRWM reverse stand-off
voltage 3.3, 5, 12, 15
and 24 V
Cddiode capacitance
VR=0V;
f = 1 MHz
207,152,38,32
and 23 pF
number of
protected lines 2
PIN DESCRIPTION
1 anode 1
2 anode 2
3 common cathode
sym002
2
1
3
1
2
001aaa401
3
Fig.1 Simplified outline (SOT23) and symbol.
2004 Feb 18 3
Philips Semiconductors Product specification
Double ESD protection diodes
in SOT23 package PESDxS2UAT series
ORDERING INFORMATION
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 60134).
Notes
1. Non-repetitive current pulse 8/20 µs exponential decay waveform; see Fig.2.
2. Measured across either pins 1 and 3 or pins 2 and 3.
TYPE NUMBER PACKAGE
NAME DESCRIPTION VERSION
PESD3V3S2UAT plastic surface mounted package; 3 leads SOT23
PESD5V0S2UAT
PESD12VS2UAT
PESD15VS2UAT
PESD24VS2UAT
SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT
Ppp peak pulse power 8/20 µs pulse; notes 1 and 2
PESD3V3S2UAT 330 W
PESD5V0S2UAT 260 W
PESD12VS2UAT 180 W
PESD15VS2UAT 160 W
PESD24VS2UAT 160 W
Ipp peak pulse current 8/20 µs pulse; notes 1 and 2
PESD3V3S2UAT 18 A
PESD5V0S2UAT 15 A
PESD12VS2UAT 5A
PESD15VS2UAT 5A
PESD24VS2UAT 3A
Tjjunction temperature 150 °C
Tamb operating ambient temperature 65 +150 °C
Tstg storage temperature 65 +150 °C
2004 Feb 18 4
Philips Semiconductors Product specification
Double ESD protection diodes
in SOT23 package PESDxS2UAT series
ESD maximum ratings
Notes
1. Device stressed with ten non-repetitive ESD pulses; see Fig.3.
2. Measured from pin 1, 2, 3, 4, 5 or 8 to pin 6 or 7.
SYMBOL PARAMETER CONDITIONS VALUE UNIT
ESD electrostatic discharge IEC 61000-4-2 (contact discharge);
notes 1 and 2
PESD3V3S2UAT 30 kV
PESD5V0S2UAT 30 kV
PESD12VS2UAT 30 kV
PESD15VS2UAT 30 kV
PESD24VS2UAT 23 kV
HBM MIL-Std 883
PESDxS2UAT-series 10 kV
ESD standards compliance
ESD STANDARD CONDITIONS
IEC 61000-4-2; level 4 (ESD); see Fig.3 > 15 kV (air); > 8 kV (contact)
HBM MIL-Std 883; class 3 > 4 kV
handbook, halfpage
010
et
20 t (µs)
Ipp
(%)
40
120
0
40
80
30
MLE218
100 % Ipp; 8 µs
50 % Ipp; 20 µs
Fig.2 8/20 µs pulse waveform according to
IEC 61000-4-5.
001aaa191
Ipp
100 %
90 %
t
30 ns 60 ns
10 %
tr = 0.7 to 1 ns
Fig.3 ElectroStatic Discharge (ESD) pulse
waveform according to IEC 61000-4-2.
2004 Feb 18 5
Philips Semiconductors Product specification
Double ESD protection diodes
in SOT23 package PESDxS2UAT series
ELECTRICAL CHARACTERISTICS
Tj=25°C; unless otherwise specified.
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
VRWM reverse stand-off voltage
PESD3V3S2UAT −−3.3 V
PESD5V0S2UAT −−5V
PESD12VS2UAT −−12 V
PESD15VS2UAT −−15 V
PESD24VS2UAT −−24 V
IRM reverse leakage current
PESD3V3S2UAT VRWM = 3.3 V 0.7 2 µA
PESD5V0S2UAT VRWM = 5 V 0.1 1 µA
PESD12VS2UAT VRWM = 12 V <1 50 nA
PESD15VS2UAT VRWM = 15 V <1 50 nA
PESD24VS2UAT VRWM = 24 V <1 50 nA
VBR breakdown voltage IZ = 5 mA
PESD3V3S2UAT 5.2 5.6 6.0 V
PESD5V0S2UAT 6.4 6.8 7.2 V
PESD12VS2UAT 14.7 15.0 15.3 V
PESD15VS2UAT 17.6 18.0 18.4 V
PESD24VS2UAT 26.5 27.0 27.5 V
Cddiode capacitance f = 1 MHz; VR=0V
PESD3V3S2UAT 207 300 pF
PESD5V0S2UAT 152 200 pF
PESD12VS2UAT 38 75 pF
PESD15VS2UAT 32 70 pF
PESD24VS2UAT 23 50 pF
V(CL)R clamping voltage notes 1 and 2
PESD3V3S2UAT Ipp =1A −−7V
Ipp =18A −−20 V
PESD5V0S2UAT Ipp =1A −−9V
Ipp =15A −−20 V
PESD12VS2UAT Ipp =1A −−19 V
Ipp =5A −−35 V
PESD15VS2UAT Ipp =1A −−23 V
Ipp =5A −−40 V
PESD24VS2UAT Ipp =1A −−36 V
Ipp =3A −−70 V
2004 Feb 18 6
Philips Semiconductors Product specification
Double ESD protection diodes
in SOT23 package PESDxS2UAT series
Notes
1. Non-repetitive current pulse 8/20 µs exponential decay waveform; see Fig.2.
2. Measured either across pins 1 and 3 or pins 2 and 3.
Rdiff differential resistance
PESD3V3S2UAT IR=1mA −−400
PESD5V0S2UAT IR=1mA −−80
PESD12VS2UAT IR=1mA −−200
PESD15VS2UAT IR=1mA −−225
PESD24VS2UAT IR= 0.5 mA −−300
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
GRAPHICAL DATA
001aaa147
103
102
104
Ppp
(W)
10
tp (µs)
110
4
103
10 102
(1)
(2)
Fig.4 Peak pulse power dissipation as a function
of pulse time; typical values.
Tamb =25°C.
tp= 8/20 µs exponential decay waveform; see Fig.2.
(1) PESD3V3S2UAT and PESD5V0S2UAT.
(2) PESD12VS2UAT, PESD15VS2UAT, PESD24VS2UAT
Tj (°C)
0 20015050 100
001aaa193
0.4
0.8
1.2
Ppp
0
Ppp(25˚C)
Fig.5 Relative variation of peak pulse power as a
function of junction temperature; typical
values.
2004 Feb 18 7
Philips Semiconductors Product specification
Double ESD protection diodes
in SOT23 package PESDxS2UAT series
VR (V)
054231
001aaa148
120
160
80
200
240
Cd
(pF)
40
(1)
(2)
Fig.6 Diode capacitance as a function of reverse
voltage; typical values.
Tamb = 25 °C; f = 1 MHz.
(1) PESD3V3S2UAT; VRWM = 3.3 V.
(2) PESD5V0S2UAT; VRWM =5V.
VR (V)
0252010 155
001aaa149
20
30
10
40
50
Cd
(pF)
0
(1)
(3)
(2)
Fig.7 Diode capacitance as a function of reverse
voltage; typical values.
Tamb = 25 °C; f = 1 MHz.
(1) PESD12VS2UAT; VRWM =12V.
(2) PESD15VS2UAT; VRWM =15V.
(3) PESD24VS2UAT; VRWM =24V.
2004 Feb 18 8
Philips Semiconductors Product specification
Double ESD protection diodes
in SOT23 package PESDxS2UAT series
001aaa270
1
10
101
Tj (°C)
100 15010005050
IR
IR(25˚C)
(1)
Fig.8 Relative variation of reverse leakage
current as a function of junction
temperature; typical values.
IR is less than 10 nA at 150 °C for:
PESD12V52UAT; VRWM =12V.
PESD15VS2UAT; VRWM =15V.
PESD24VS2UAT; VRWM =24V.
(1) PESD3V3S2UAT; VRWM = 3.3 V.
PESD5V0S2UAT; VRWM =5V.
2004 Feb 18 9
Philips Semiconductors Product specification
Double ESD protection diodes
in SOT23 package PESDxS2UAT series
001aaa151
450
50
Note 1: IEC61000-4-2 network
CZ = 150 pF; RZ = 330
D.U.T.: PESDxS2UAT
RG 223/U
50 coax
RZ
CZ
ESD TESTER 4 GHz DIGITAL
OSCILLOSCOPE
10×
ATTENUATOR
vertical scale = 200 V/div
horizontal scale = 50 ns/div vertical scale = 20 V/div
horizontal scale = 50 ns/div
vertical scale = 200 V/div
horizontal scale = 50 ns/div vertical scale = 10 V/div
horizontal scale = 50 ns/div
GND
GND
GND
GND
GND
GND
GND
unclamped +1 kV ESD voltage waveform
(IEC61000-4-2 network) clamped +1 kV ESD voltage waveform
(IEC61000-4-2 network)
GND
unclamped 1 kV ESD voltage waveform
(IEC61000-4-2 network) clamped 1 kV ESD voltage waveform
(IEC61000-4-2 network)
note 1
PESD24VS2UAT
PESD15VS2UAT
PESD12VS2UAT
PESD5V0S2L
PESD3V3S2UAT
Fig.9 ESD clamping test set-up and waveforms.
2004 Feb 18 10
Philips Semiconductors Product specification
Double ESD protection diodes
in SOT23 package PESDxS2UAT series
APPLICATION INFORMATION
The PESDxS2UAT series can protect up to two lines against damage caused by unidirectional ElectroStatic Discharge
(ESD) and surge pulses. The PESDxS2UAT series can protect lines whose signal polarities are below ground.
PESDxS2UAT series provide a surge capability of up to 330 Watts peak pulse power per line for a 8/20 µs waveform.
Circuit board layout and protection device placement
Circuit board layout is critical for the suppression of ESD, Electrical Fast Transient (EFT) and surge transients. The
following guidelines are recommended:
1. Place the PESDxS2UAT as close as possible to the input terminal or connector.
2. Minimize the path length between the PESDxS2UAT and the protected line.
3. Keep parallel signal paths to a minimum.
4. Avoid running protected conductors in parallel with unprotected conductors.
5. Minimize all printed-circuit board conductive loops including power and ground loops.
6. Minimize the length of transient return paths to ground.
7. Avoid using shared transient return paths to a common ground point.
8. Ground planes should be used whenever possible.
9. Use vias for multi-layer printed-circuit boards.
001aaa179
PESDxS2UAT
line 1 to be protected
unidirectional protection
of two lines bidirectional protection
of one line
line 2 to be protected
ground
PESDxS2UAT
line 1 to be protected
ground
Fig.10 Typical application: ESD protection of data lines.
2004 Feb 18 11
Philips Semiconductors Product specification
Double ESD protection diodes
in SOT23 package PESDxS2UAT series
PACKAGE OUTLINE
UNIT A
1
max. b
p
cDE e
1
H
E
L
p
Qwv
REFERENCES
OUTLINE
VERSION EUROPEAN
PROJECTION ISSUE DATE
97-02-28
99-09-13
IEC JEDEC EIAJ
mm 0.1 0.48
0.38 0.15
0.09 3.0
2.8 1.4
1.2 0.95
e
1.9 2.5
2.1 0.55
0.45 0.1
0.2
DIMENSIONS (mm are the original dimensions)
0.45
0.15
SOT23 TO-236AB
bp
D
e1
e
A
A1
Lp
Q
detail X
HE
E
w
M
v
M
A
B
AB
0 1 2 mm
scale
A
1.1
0.9
c
X
12
3
Plastic surface mounted package; 3 leads SOT23
2004 Feb 18 12
Philips Semiconductors Product specification
Double ESD protection diodes
in SOT23 package PESDxS2UAT series
DATA SHEET STATUS
Notes
1. Please consult the most recently issued data sheet before initiating or completing a design.
2. The product status of the device(s) described in this data sheet may have changed since this data sheet was
published. The latest information is available on the Internet at URL http://www.semiconductors.philips.com.
3. For data sheets describing multiple type numbers, the highest-level product status determines the data sheet status.
LEVEL DATA SHEET
STATUS(1) PRODUCT
STATUS(2)(3) DEFINITION
I Objective data Development This data sheet contains data from the objective specification for product
development. Philips Semiconductors reserves the right to change the
specification in any manner without notice.
II Preliminary data Qualification This data sheet contains data from the preliminary specification.
Supplementary data will be published at a later date. Philips
Semiconductors reserves the right to change the specification without
notice, in order to improve the design and supply the best possible
product.
III Product data Production This data sheet contains data from the product specification. Philips
Semiconductors reserves the right to make changes at any time in order
to improve the design, manufacturing and supply. Relevant changes will
be communicated via a Customer Product/Process Change Notification
(CPCN).
DEFINITIONS
Short-form specification The data in a short-form
specification is extracted from a full data sheet with the
same type number and title. For detailed information see
the relevant data sheet or data handbook.
Limiting values definition Limiting values given are in
accordance with the Absolute Maximum Rating System
(IEC 60134). Stress above one or more of the limiting
values may cause permanent damage to the device.
These are stress ratings only and operation of the device
attheseoratany other conditions abovethosegiveninthe
Characteristics sections of the specification is not implied.
Exposure to limiting values for extended periods may
affect device reliability.
Application information Applications that are
described herein for any of these products are for
illustrative purposes only. Philips Semiconductors make
norepresentationorwarrantythatsuchapplicationswillbe
suitable for the specified use without further testing or
modification.
DISCLAIMERS
Life support applications These products are not
designed for use in life support appliances, devices, or
systems where malfunction of these products can
reasonably be expected to result in personal injury. Philips
Semiconductorscustomers usingorsellingtheseproducts
for use in such applications do so at their own risk and
agree to fully indemnify Philips Semiconductors for any
damages resulting from such application.
Right to make changes Philips Semiconductors
reserves the right to make changes in the products -
including circuits, standard cells, and/or software -
described or contained herein in order to improve design
and/or performance. When the product is in full production
(status ‘Production’), relevant changes will be
communicated via a Customer Product/Process Change
Notification (CPCN). Philips Semiconductors assumes no
responsibility or liability for the use of any of these
products, conveys no licence or title under any patent,
copyright, or mask work right to these products, and
makes no representations or warranties that these
products are free from patent, copyright, or mask work
right infringement, unless otherwise specified.
© Koninklijke Philips Electronics N.V. 2004 SCA76
All rights are reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner.
The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed
without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license
under patent- or other industrial or intellectual property rights.
Philips Semiconductors – a w orldwide compan y
Contact information
For additional information please visit http://www.semiconductors.philips.com. Fax: +31 40 27 24825
For sales offices addresses send e-mail to: sales.addresses@www.semiconductors.philips.com.
Printed in The Netherlands R76/01/pp13 Date of release: 2004 Feb 18 Document order number: 9397 750 12247