DATA SHEET
Product speci?cation
Supersedes data of 1998 Oct 30
1999May 25
DISCRETE SEMICONDUCTORS
BZA456A
Quadruple ESD transient voltage suppressor
book, halfpage
M3D302
Quadruple ESD transient voltage suppressor
BZA456A
FEATURES
?ESD rating >8kV, according to IEC1000-4-2?SOT457 surface mount package ?Common anode configuration ?Non-clamping range ?0.5to 5.6V ?Maximum reverse peak power dissipation:24W at t p =1ms
?Maximum clamping voltage at peak pulse current:8V at I ZSM =3A.APPLICATIONS
?Computers and peripherals ?Audio and video equipment ?Communication systems ?Medical equipment.
DESCRIPTION
Monolithic transient voltage suppressor diode in a six lead
SOT457 (SC-74) package for 4-bit wide ESD transient suppression at 5.6V level.
PINNING
PIN DESCRIPTION
1cathode 12common 3cathode 24cathode 35common 6
cathode 4
Fig.1 Simplified outline (SOT457) and symbol.
handbook, halfpage 1
3
2
4
561346
25
Top view
MAM357
Marking code : Z6.
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134).Notes
1.T s is the temperature at the soldering point of the anode pin.
2.DC working current limited by P tot max .
SYMBOL PARAMETER
CONDITIONS
MIN.
MAX.
UNIT
Per diode I Z working current
T s =60°C; note 1?note 2mA I F continuous forward current T s =60°C
?100mA I FSM non-repetitive peak forward current t p =1ms; square pulse
? 3.75A I ZSM non-repetitive peak reverse current t p =1ms; square pulse; see Fig.2?3A P tot total power dissipation
T s =60°C; see Fig.3
?720mW P ZSM non repetitive peak reverse power dissipation
square pulse; t p =1ms; see Fig.4
?24W T stg storage temperature ?65+150°C T j junction temperature
?65
+150
°C
Quadruple ESD transient voltage suppressor
BZA456A
THERMAL CHARACTERISTICS ELECTRICAL CHARACTERISTICS T j =25°C unless otherwise speci?ed.SYMBOL PARAMETER
CONDITIONS
VALUE UNIT R th j-s
thermal resistance from junction to soldering point
one or more diodes loaded
125
K/W
SYMBOL PARAMETER
CONDITIONS
MIN.
TYP .
MAX.
UNIT
Per diode V Z working voltage I Z =1mA 5.32 5.6 5.88V V F forward voltage
I F =200mA ?? 1.3V V ZSM non-repetitive peak reverse voltage I ZSM =3A; t p =1ms ??8V I R reverse current V R =3V ??2μA r dif differential resistance
I Z =250μA ??1600?I Z =1mA ??400?S Z temperature coef?cient of working voltage
I Z =5mA ?
1.2
?
mV/K
C d
diode capacitance
see Fig.5
V R =0; f =1MHz ??240pF V R =3V; f =1MHz
?
?
140
pF
Quadruple ESD transient voltage suppressor BZA456A
Fig.2
Maximum non-repetitive peak reverse current as a function of pulse time.
handbook, halfpage
10
1MDA190
10?1
1
I ZSM (A)
t p (ms)
10
Fig.3 Power derating curve.
All diodes loaded.
handbook, halfpage
050100200
1000
P tot
(mW)T s (o C)
800
150
600
400
200
MDA198
Fig.4
Maximum non-repetitive peak reverse power dissipation as a function of pulse duration (square pulse).
P ZSM =V ZSM ×I ZSM .
V ZSM is the non-repetitive peak reverse voltage at I ZSM .
handbook, halfpage
102
10
1P ZSM (W)
t p (ms)
MDA199
10?1
1
10
Fig.5
Diode capacitance as a function of reverse voltage; typical values.
T j =25°C; f =1MHz.
handbook, halfpage
05
250
C d
(pF)V R (V)
50
100
150
200
1234
MDA192
Quadruple ESD transient voltage suppressor BZA456A
Fig.6 ESD clamping test set-up and waveforms.
handbook, full pagewidth
MGL247
450 ?
50 ?
Note 1: attenuator is only used for open socket high voltage measurements
IEC 1000-4-2 network C Z = 150 pF; R Z = 330 ?
1/4 BZA456A
RG 223/U 50 ? coax
R Z C Z
ESD TESTER DIGITIZING OSCILLOSCOPE
10×
ATTENUATOR
note 1
GND unclamped +1 kV ESD voltage waveform (IEC 1000?4?2 network)clamped +1 kV ESD voltage waveform (IEC 1000?4?2 network)
unclamped ?1 kV ESD voltage waveform (IEC 1000?4?2 network)
clamped ?1 kV ESD voltage waveform (IEC 1000?4?2 network)
GND
GND GND
vertical scale = 100 V/Div horizontal scale = 50 ns/Div vertical scale = 10 V/Div horizontal scale = 50 ns/Div
vertical scale = 100 V/Div horizontal scale = 50 ns/Div
vertical scale = 10 V/Div horizontal scale = 50 ns/Div
Quadruple ESD transient voltage suppressor
BZA456A
APPLICATION INFORMATION Typical common anode application
A quadruple transient suppressor in a SOT457 package makes it possible to protect four separate lines using only one package. Two simplified examples are shown in Figs 7and 8.
Fig.7 Computer interface protection.
handbook, full pagewidth
GND
keyboard,terminal,printer,etc.
I/O
BZA456A
A B C D
FUNCTIONAL DECODER
MGK458
Fig.8 Microprocessor protection.
handbook, full pagewidth
MGK459
I/O
ROM
RAM CPU
CLOCK
GND
V DD
V GG
data bus
control bus
address bus
BZA456A
Quadruple ESD transient voltage suppressor BZA456A
Device placement and printed-circuit board layout
Circuit board layout is of extreme importance in the
suppression of transients. The clamping voltage of the
BZA456A is determined by the peak transient current and
the rate of rise of that current (di/dt). Since parasitic
inductances can further add to the clamping voltage
(V=L di/dt) the series conductor lengths on the
printed-circuit board should be kept to a minimum. This
includes the lead length of the suppression element.
In addition to minimizing conductor length the following
printed-circuit board layout guidelines are recommended:
1.Place the suppression element close to the input
terminals or connectors.
2.Keep parallel signal paths to a minimum.
3.Avoid running protection conductors in parallel with
unprotected conductors.
4.Minimize all printed-circuit board loop areas including
power and ground loops.
5.Minimize the length of the transient return path to
ground.
6.Avoid using shared transient return paths to a common
ground point.
Quadruple ESD transient voltage suppressor
BZA456A
PACKAGE OUTLINE
REFERENCES
OUTLINE VERSION EUROPEAN PROJECTION
ISSUE DATE IEC
JEDEC
EIAJ SOT457
SC-74
w B
M b p
D e
pin 1index
A
A 1
L p
Q
detail X
H E
E v M A
A B y
01 2 mm
scale
c
X
1
3
2
4
56Plastic surface mounted package; 6 leads
SOT457
UNIT A 1b p c D E H E L p Q y w v mm
0.10.013
0.400.25
3.12.7
0.260.10
1.71.3
e 0.95
3.02.5
0.2
0.1
0.2
DIMENSIONS (mm are the original dimensions)0.60.2
0.330.23
A 1.10.9
97-02-28
Quadruple ESD transient voltage suppressor BZA456A
DEFINITIONS
Data Sheet Status
Objective speci?cation This data sheet contains target or goal speci?cations for product development. Preliminary speci?cation This data sheet contains preliminary data; supplementary data may be published later. Product speci?cation This data sheet contains ?nal product speci?cations.
Limiting values
Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). 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 at these or at any other conditions above those given in the Characteristics sections of the speci?cation is not implied. Exposure to limiting values for extended periods may affect device reliability.
Application information
Where application information is given, it is advisory and does not form part of the speci?cation.
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 customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such improper use or sale.
Quadruple ESD transient voltage suppressor BZA456A
NOTES
Quadruple ESD transient voltage suppressor BZA456A
NOTES
? Philips Electronics N.V. SCA 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.
Internet: https://www.doczj.com/doc/fa4715102.html,
1999
65
Philips Semiconductors – a worldwide company
Netherlands: Postbus 90050, 5600PB EINDHOVEN, Bldg.VB,Tel.+31402782785,Fax.+31402788399
New Zealand: 2Wagener Place, C.P.O.Box 1041, AUCKLAND,Tel.+6498494160,Fax.+6498497811Norway: Box 1, Manglerud 0612, OSLO,Tel.+4722748000,Fax.+4722748341Pakistan: see Singapore
Philippines: Philips Semiconductors Philippines Inc.,
106Valero St.Salcedo Village, P.O.Box 2108MCC,MAKATI,Metro MANILA, Tel.+6328166380,Fax.+6328173474Poland: Ul.Lukiska 10, PL 04-123WARSZAWA,Tel.+48226122831,Fax.+48226122327Portugal: see Spain Romania: see Italy
Russia: Philips Russia, https://www.doczj.com/doc/fa4715102.html,atcheva 35A, 119048MOSCOW,Tel.+70957556918,Fax.+70957556919
Singapore: Lorong 1, Toa Payoh, SINGAPORE 319762,Tel.+653502538,Fax.+652516500Slovakia: see Austria
Slovenia: see Italy
South Africa: S.A. PHILIPS Pty Ltd., 195-215Main Road Martindale,2092JOHANNESBURG, P.O.Box 58088 Newville 2114,Tel.+27114715401,Fax.+27114715398
South America: Al.Vicente Pinzon,173, 6th floor,04547-130S?O PAULO,SP, Brazil,
Tel.+55118212333,Fax.+55118212382Spain: Balmes 22, 08007BARCELONA,Tel.+34933016312,Fax.+34933014107
Sweden: Kottbygatan 7, Akalla, S-16485STOCKHOLM,Tel.+46859852000,Fax.+46859852745
Switzerland: Allmendstrasse 140, CH-8027ZüRICH,Tel.+4114882741Fax.+4114883263
Taiwan: Philips Semiconductors, 6F, No.96, Chien Kuo N.Rd.,Sec.1,TAIPEI, Taiwan Tel.+886221342886,Fax.+886221342874Thailand: PHILIPS ELECTRONICS (THAILAND) Ltd.,
209/2Sanpavuth-Bangna Road Prakanong, BANGKOK 10260,Tel.+6627454090,Fax.+6623980793
Turkey: Yukari Dudullu, Org. San. Blg., 2.Cad. Nr. 28 81260Umraniye,ISTANBUL, Tel.+902165221500,Fax.+902165221813
Ukraine : PHILIPS UKRAINE, 4Patrice Lumumba str., Building B, Floor 7,252042KIEV, Tel.+380442642776, Fax. +380442680461
United Kingdom: Philips Semiconductors Ltd., 276Bath Road, Hayes,MIDDLESEX UB35BX, Tel.+441817305000,Fax.+441817548421United States: 811East Arques Avenue, SUNNYVALE, CA 94088-3409,Tel.+18002347381, Fax.+18009430087Uruguay: see South America Vietnam: see Singapore
Yugoslavia: PHILIPS, Trg N. Pasica 5/v, 11000BEOGRAD,Tel.+38111625344,Fax.+38111635777
For all other countries apply to: Philips Semiconductors,
International Marketing &Sales Communications, Building BE-p, P.O.Box 218,5600MD EINDHOVEN, The Netherlands,Fax.+31402724825Argentina: see South America
Australia: 34 Waterloo Road, NORTH RYDE, NSW 2113,Tel.+61298054455,Fax.+61298054466
Austria:Computerstr. 6, A-1101 WIEN, P.O. Box 213,Tel.+431601011248, Fax.+431601011210
Belarus: Hotel Minsk Business Center, Bld.3, r.1211, Volodarski Str.6,220050MINSK, Tel.+375172200733,Fax.+375172200773Belgium: see The Netherlands Brazil:see South America
Bulgaria:Philips Bulgaria Ltd., Energoproject, 15th floor,51James Bourchier Blvd., 1407SOFIA,Tel.+3592689211,Fax.+3592689102
Canada: PHILIPS SEMICONDUCTORS/COMPONENTS,Tel.+18002347381, Fax.+18009430087
China/Hong Kong: 501Hong Kong Industrial Technology Centre,72Tat Chee Avenue, Kowloon Tong, HONG KONG,Tel.+852********,Fax.+852********Colombia: see South America Czech Republic: see Austria
Denmark: Sydhavnsgade 23, 1780COPENHAGEN V,Tel.+4533293333,Fax.+4533293905Finland: Sinikalliontie 3, FIN-02630ESPOO,Tel.+3589615800,Fax.+358961580920
France: 51Rue Carnot, BP317, 92156SURESNES Cedex,Tel.+33140996161,Fax.+33140996427
Germany: Hammerbrookstra?e 69, D-20097HAMBURG,Tel.+4940235360,Fax.+494023536300Hungary:see Austria
India: Philips INDIA Ltd, Band Box Building, 2nd floor,254-D,Dr.Annie Besant Road, Worli, MUMBAI 400025,Tel.+91224938541,Fax.+91224930966
Indonesia: PT Philips Development Corporation, Semiconductors Division,Gedung Philips, Jl. Buncit Raya Kav.99-100, JAKARTA 12510,Tel.+62217940040ext.2501, Fax.+62217940080
Ireland: Newstead, Clonskeagh, DUBLIN 14,Tel.+35317640000,Fax.+35317640200
Israel: RAPAC Electronics, 7Kehilat Saloniki St, PO Box 18053,TEL AVIV 61180, Tel.+97236450444,Fax.+97236491007Italy: PHILIPS SEMICONDUCTORS, Piazza IV Novembre 3,20124MILANO, Tel.+390267522531,Fax.+390267522557Japan: Philips Bldg 13-37, Kohnan 2-chome, Minato-ku,
TOKYO 108-8507, Tel.+81337405130,Fax.+81337405057
Korea: Philips House, 260-199Itaewon-dong, Yongsan-ku, SEOUL,Tel.+8227091412,Fax.+8227091415
Malaysia: No.76Jalan Universiti, 46200PETALING JAYA, SELANGOR,Tel.+60 37505214,Fax.+6037574880
Mexico: 5900Gateway East, Suite 200, EL PASO, TEXAS 79905,Tel.+9-58002347381, Fax +9-58009430087Middle East: see Italy
Printed in The Netherlands
115002/00/03/pp12 Date of release: 1999May 25Document order number: 939775005953