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 DISCRETE SEMICONDUCTORS
DATA SHEET
book, halfpage
MBD127
BZA800A-series Quadruple ESD transient voltage suppressor
Product specification Supersedes data of 2000 May 01 2000 Sep 25
Philips Semiconductors
Product specification
Quadruple ESD transient voltage suppressor
FEATURES * ESD rating >8 kV, according to IEC1000-4-2 * SOT353 (SC-88A) surface mount package * Common anode configuration. APPLICATIONS * Computers and peripherals * Audio and video equipment * Communication systems. DESCRIPTION Monolithic transient voltage suppressor diode in a five lead SOT353 (SC-88A) package for 4-bit wide ESD transient suppression. MARKING
1 2 3
handbook, halfpage5
BZA800A-series
PINNING PIN 1 2 3 4 5 cathode 1 common anode cathode 2 cathode 3 cathode 4 DESCRIPTION
4 1 3 2 4 5
TYPE NUMBER BZA856A BZA862A BZA868A BZA820A
MARKING CODE Z1 Z2 Z3 Z4
MGT580
Fig.1 Simplified outline SOT353 (SC-88A).
2000 Sep 25
2
Philips Semiconductors
Product specification
Quadruple ESD transient voltage suppressor
LIMITING VALUES In accordance with the Absolute Maximum Rating System (IEC 60134). SYMBOL Per diode IZ IF IFSM Ptot PZSM working current continuous forward current total power dissipation non repetitive peak reverse power dissipation: BZA856A, BZA862A, BZA868A, BZA820A Tstg Tj Note 1. DC working current limited by Ptot(max). THERMAL CHARACTERISTICS SYMBOL Rth j-a PARAMETER thermal resistance from junction to ambient CONDITIONS all diodes loaded storage temperature junction temperature Tamb = 25 C Tamb = 25 C Tamb = 25 C square pulse; tp = 1 ms; see Fig.3 - - - - - - PARAMETER CONDITIONS
BZA800A-series
MIN.
MAX.
UNIT
note 1 200 3.75 335
mA mA A mW
non-repetitive peak forward current tp = 1 ms; square pulse
24 17 +150 150
W W C C
-65 -
VALUE 370
UNIT K/W
2000 Sep 25
3
Philips Semiconductors
Product specification
Quadruple ESD transient voltage suppressor
ELECTRICAL CHARACTERISTICS Tj = 25 C unless otherwise specified. SYMBOL VF IR PARAMETER forward voltage reverse current BZA856A BZA862A BZA868A BZA820A VZ working voltage BZA856A BZA862A BZA868A BZA820A rdiff differential resistance BZA856A BZA862A BZA868A BZA820A SZ temperature coefficient BZA856A BZA862A BZA868A BZA820A Cd diode capacitance BZA856A BZA862A BZA868A BZA820A IZSM non-repetitive peak reverse current BZA856A BZA862A BZA868A BZA820A tp = 1 ms; Tamb = 25 C - - - - f = 1 MHz; VR = 0 - - - - IZ = 1 mA - - - - IZ = 1 mA - - - - VR = 3 V VR = 4 V VR = 4.3 V VR = 15 V IZ = 1 mA 5.32 5.89 6.46 19 - - - - CONDITIONS IF = 200 mA - MIN.
BZA800A-series
TYP. - - - - - 5.6 6.2 6.8 20 - - - - -0.2 1.8 3 16 - - - - - - - -
MAX. 1.3 2000 700 200 100 5.88 6.51 7.14 21 400 300 200 125 - - - - 240 200 180 50 3.2 2.9 2.6 0.6
UNIT V nA nA nA nA V V V V mV/K mV/K mV/K mV/K pF pF pF pF A A A A
2000 Sep 25
4
Philips Semiconductors
Product specification
Quadruple ESD transient voltage suppressor
BZA800A-series
handbook, halfpage
10
MGT583
102 handbook, halfpage PZSM
MGT584
BZA856A I ZSM (A) BZA862A (W)
BZA856A, BZA862A, BZA868A
BZA820A
BZA868A 1 10
BZA820A
10-1 10-2
10-1
1
t p (ms)
10
1 10-2
10-1
1
t p (ms)
10
PZSM = VZSM x IZSM. VZSM is the non-repetitive peak reverse voltage at IZSM.
Fig.3 Fig.2 Maximum non-repetitive peak reverse current as a function of pulse time.
Maximum non-repetitive peak reverse power dissipation as a function of pulse duration (square pulse).
MGT585
MGT586
handbook, halfpage
200 Cd 160
handbook, halfpage
400
(pF)
Ptot (mW) 300
120 BZA856A 80 BZA862A BZA868A 100 40 BZA820A 0 0 5 10 15 0 0 50 100 Tamb (C) 150 200
VR (V)
Tj = 25 C; f = 1 MHz.
Fig.4
Diode capacitance as a function of reverse voltage; typical values.
Fig.5 Power derating curve.
2000 Sep 25
5
Philips Semiconductors
Product specification
Quadruple ESD transient voltage suppressor
BZA800A-series
handbook, full pagewidth
ESD TESTER RZ CZ
450
RG 223/U 50 coax
10x ATTENUATOR note 1
DIGITIZING OSCILLOSCOPE 50
IEC 1000-4-2 network CZ = 150 pF; RZ = 330
1/4 BZA800A
Note 1: attenuator is only used for open socket high voltage measurements
vertical scale = 100 V/div horizontal scale = 50 ns/div
BZA820A GND-4 BZA868A GND-3 BZA862A GND-2 BZA856A GND unclamped +1 kV ESD voltage waveform (IEC 1000-4-2 network) GND-1
vertical scale = 10 V/div horizontal scale = 50 ns/div
clamped +1 kV ESD voltage waveform (IEC 1000-4-2 network)
GND GND
vertical scale = 100 V/div horizontal scale = 50 ns/div
vertical scale = 10 V/div horizontal scale = 50 ns/div
unclamped -1 kV ESD voltage waveform (IEC 1000-4-2 network)
clamped -1 kV ESD voltage waveform (IEC 1000-4-2 network)
MGT587
Fig.6 ESD clamping test set-up and waveforms.
2000 Sep 25
6
Philips Semiconductors
Product specification
Quadruple ESD transient voltage suppressor
APPLICATION INFORMATION Typical common anode application
BZA800A-series
A quadruple transient suppressor in a SOT353 package makes it possible to protect four separate lines using only one package. Two simplified examples are shown in Figs 7 and 8.
handbook, full pagewidth
keyboard, terminal, printer, etc.
I/O
A B C D FUNCTIONAL DECODER
BZA800A GND
MGT581
Fig.7 Computer interface protection.
handbook, full pagewidth
VDD address bus VGG
RAM
ROM
I/O
data bus
CPU CLOCK
control bus
BZA800A GND
MGT582
Fig.8 Microprocessor protection.
2000 Sep 25
7
Philips Semiconductors
Product specification
Quadruple ESD transient voltage suppressor
Device placement and printed-circuit board layout Circuit board layout is of extreme importance in the suppression of transients. The clamping voltage of the BZA800A 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.
BZA800A-series
2000 Sep 25
8
Philips Semiconductors
Product specification
Quadruple ESD transient voltage suppressor
PACKAGE OUTLINE Plastic surface mounted package; 5 leads
BZA800A-series
SOT353
D
B
E
A
X
y
HE
vMA
5
4
Q
A
A1
1
e1 e
2
bp
3
wM B detail X Lp
c
0
1 scale
2 mm
DIMENSIONS (mm are the original dimensions) UNIT mm A 1.1 0.8 A1 max 0.1 bp 0.30 0.20 c 0.25 0.10 D 2.2 1.8 E (2) 1.35 1.15 e 1.3 e1 0.65 HE 2.2 2.0 Lp 0.45 0.15 Q 0.25 0.15 v 0.2 w 0.2 y 0.1
OUTLINE VERSION SOT353
REFERENCES IEC JEDEC EIAJ SC-88A
EUROPEAN PROJECTION
ISSUE DATE 97-02-28
2000 Sep 25
9
Philips Semiconductors
Product specification
Quadruple ESD transient voltage suppressor
DATA SHEET STATUS DATA SHEET STATUS Objective specification PRODUCT STATUS Development DEFINITIONS (1)
BZA800A-series
This data sheet contains the design target or goal specifications for product development. Specification may change in any manner without notice. This data sheet contains preliminary data, and supplementary data will be published at a later date. Philips Semiconductors reserves the right to make changes at any time without notice in order to improve design and supply the best possible product. This data sheet contains final specifications. Philips Semiconductors reserves the right to make changes at any time without notice in order to improve design and supply the best possible product.
Preliminary specification
Qualification
Product specification
Production
Note 1. Please consult the most recently issued data sheet before initiating or completing a design. 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 at these or at any other conditions above those given in the 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 no representation or warranty that such applications will be 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 Semiconductors customers using or selling these products 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, without notice, in the products, including circuits, standard cells, and/or software, described or contained herein in order to improve design and/or performance. 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.
2000 Sep 25
10
Philips Semiconductors
Product specification
Quadruple ESD transient voltage suppressor
NOTES
BZA800A-series
2000 Sep 25
11
Philips Semiconductors - a worldwide company
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For all other countries apply to: Philips Semiconductors, Marketing Communications, Building BE-p, P.O. Box 218, 5600 MD EINDHOVEN, The Netherlands, Fax. +31 40 27 24825 (c) Philips Electronics N.V. 2000
Internet: http://www.semiconductors.philips.com
SCA 70
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.
Printed in The Netherlands
613514/03/pp12
Date of release: 2000
Sep 25
Document order number:
9397 750 07142


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