DISCRETE SEMICONDUCTORS
DATA SHEET
book, halfpage
BZA800AL series
Quadruple ESD transient voltage
suppressor
Product specification
2002 Jan 11
Download from Www.Somanuals.com. All Manuals Search And Download.
Philips Semiconductors
Product specification
Quadruple ESD transient voltage suppressor
BZA800AL series
THERMAL CHARACTERISTICS
SYMBOL
PARAMETER
CONDITIONS
all diodes loaded
VALUE
UNIT
Rth j-a
Rth j-s
thermal resistance from junction to ambient
410
200
185
K/W
K/W
K/W
thermal resistance from junction to solder point; one diode loaded
note 1
all diodes loaded
Note
1. Solder point of common anode (pin 2).
ELECTRICAL CHARACTERISTICS
Tj = 25 °C unless otherwise specified.
SYMBOL
PARAMETER
forward voltage
CONDITIONS
IF = 200 mA
MIN.
TYP.
MAX.
UNIT
VF
IR
−
−
1.3
V
reverse current
BZA856AL
VR = 3 V
VR = 4 V
VR = 4.3 V
IZ = 1 mA
−
−
−
−
−
−
1000
500
nA
nA
nA
BZA862AL
BZA868AL
100
VZ
working voltage
BZA856AL
5.32
5.89
6.46
5.6
6.2
6.8
5.88
6.51
7.14
V
V
V
BZA862AL
BZA868AL
rdif
differential resistance
BZA856AL
IZ = 1 mA
−
−
−
−
−
−
400
300
200
Ω
Ω
Ω
BZA862AL
BZA868AL
SZ
temperature coefficient
BZA856AL
IZ = 1 mA
−
−
−
0.3
1.6
2.2
−
−
−
mV/K
mV/K
mV/K
BZA862AL
BZA868AL
Cd
diode capacitance
BZA856AL
f = 1 MHz; VR = 0
−
−
−
−
−
−
125
105
90
pF
pF
pF
BZA862AL
BZA868AL
IZSM
non-repetitive peak reverse current
BZA856AL
tp = 1 ms; Tamb = 25 °C
−
−
−
−
−
−
2.2
2.1
2
A
A
A
BZA862AL
BZA868AL
2002 Jan 11
3
Download from Www.Somanuals.com. All Manuals Search And Download.
Philips Semiconductors
Product specification
Quadruple ESD transient voltage suppressor
BZA800AL series
MLD790
MLD791
2
10
10
handbook, halfpage
handbook, halfpage
P
I
ZSM
ZSM
(A)
(W)
BZA856AL
BZA868AL
BZA856AL
BZA862AL
1
10
BZA862AL
BZA868AL
−1
10
1
10
−2
−1
−2
−1
10
10
10
1
10
1
10
t
(ms)
t
(ms)
p
p
PZSM = VZSM × IZSM
.
VZSM is the non-repetitive peak reverse voltage at IZSM
.
Fig.3 Maximum non-repetitive peak reverse
power dissipation as a function of pulse
duration (square pulse).
Fig.2 Maximum non-repetitive peak reverse
current as a function of pulse time.
MLD792
MLD793
120
400
handbook, halfpage
handbook, halfpage
P
tot
C
d
(pF)
(mW)
300
80
200
100
0
BZA856AL
BZA862AL
BZA868AL
40
0
0
2
4
6
8
0
50
100
150
T
(°C)
V
(V)
amb
R
Tj = 25 °C; f = 1 MHz.
Fig.4 Diode capacitance as a function of reverse
voltage; typical values.
Fig.5 Power derating curve.
2002 Jan 11
4
Download from Www.Somanuals.com. All Manuals Search And Download.
Philips Semiconductors
Product specification
Quadruple ESD transient voltage suppressor
BZA800AL series
ESD TESTER
RG 223/U
DIGITIZING
50 Ω coax
OSCILLOSCOPE
R
Z
450 Ω
10×
ATTENUATOR
50 Ω
C
Z
note 1
1/4 BZA800AL
IEC 61000-4-2 network
= 150 pF; R = 330 Ω
Note 1: attenuator is only used for open
socket high voltage measurements
C
Z
Z
vertical scale = 100 V/div
horizontal scale = 50 ns/div
vertical scale = 5 V/div
horizontal scale = 50 ns/div
BZA868AL
BZA862AL
BZA856AL
GND
GND
unclamped +1 kV ESD voltage waveform
(IEC 61000-4-2 network)
clamped +1 kV ESD voltage waveform
(IEC 61000-4-2 network)
GND
vertical scale = 100 V/div
horizontal scale = 50 ns/div
vertical scale = 5 V/div
horizontal scale = 50 ns/div
unclamped −1 kV ESD voltage waveform
(IEC 61000-4-2 network)
clamped −1 kV ESD voltage waveform
(IEC 61000-4-2 network)
MLD794
Fig.6 ESD clamping test set-up and waveforms.
5
2002 Jan 11
Download from Www.Somanuals.com. All Manuals Search And Download.
Philips Semiconductors
Product specification
Quadruple ESD transient voltage suppressor
BZA800AL series
APPLICATION INFORMATION
Typical common anode application
A quadruple transient suppressor in a SOT353 (SC88A) package makes it possible to protect four separate lines using
only one package. A simplified example is shown in Fig 7.
A
B
C
D
keyboard,
terminal,
printer,
etc.
I/O
FUNCTIONAL
DECODER
BZA800AL
GND
MLD795
Fig.7 Computer interface protection.
Device placement and printed-circuit board layout
Circuit board layout is of extreme importance in the suppression of transients. The clamping voltage of the BZA800AL 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.
2002 Jan 11
6
Download from Www.Somanuals.com. All Manuals Search And Download.
Philips Semiconductors
Product specification
Quadruple ESD transient voltage suppressor
BZA800AL series
PACKAGE OUTLINE
Plastic surface mounted package; 5 leads
SOT353
D
B
E
A
X
y
H
v
M
A
E
5
4
Q
A
A
1
1
2
3
c
e
1
b
p
L
p
w
M
B
e
detail X
0
1
2 mm
scale
DIMENSIONS (mm are the original dimensions)
A
1
(2)
UNIT
A
b
c
D
E
e
e
H
L
Q
v
w
y
p
p
1
E
max
0.30
0.20
1.1
0.8
0.25
0.10
2.2
1.8
1.35
1.15
2.2
2.0
0.45
0.15
0.25
0.15
mm
0.1
1.3
0.65
0.2
0.2
0.1
REFERENCES
JEDEC
EUROPEAN
PROJECTION
OUTLINE
VERSION
ISSUE DATE
IEC
EIAJ
SC-88A
97-02-28
SOT353
2002 Jan 11
7
Download from Www.Somanuals.com. All Manuals Search And Download.
Philips Semiconductors
Product specification
Quadruple ESD transient voltage suppressor
BZA800AL series
DATA SHEET STATUS
PRODUCT
DATA SHEET STATUS(1)
STATUS(2)
DEFINITIONS
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.
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.
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. Changes will be
communicated according to the Customer Product/Process Change
Notification (CPCN) procedure SNW-SQ-650A.
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
DEFINITIONS
DISCLAIMER(2)S
Short-form specification
The data in a short-form
Life support applications
These products are not
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.
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.
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.
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.
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.
2002 Jan 11
8
Download from Www.Somanuals.com. All Manuals Search And Download.
Philips Semiconductors
Product specification
Quadruple ESD transient voltage suppressor
BZA800AL series
NOTES
2002 Jan 11
9
Download from Www.Somanuals.com. All Manuals Search And Download.
Philips Semiconductors
Product specification
Quadruple ESD transient voltage suppressor
BZA800AL series
NOTES
2002 Jan 11
10
Download from Www.Somanuals.com. All Manuals Search And Download.
Philips Semiconductors
Product specification
Quadruple ESD transient voltage suppressor
BZA800AL series
NOTES
2002 Jan 11
11
Download from Www.Somanuals.com. All Manuals Search And Download.
Philips Semiconductors – a worldwide company
Contact information
Fax: +31 40 27 24825
© Koninklijke Philips Electronics N.V. 2002
SCA74
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
613514/01/pp12
Date of release: 2002 Jan 11
Document order number: 9397 750 09173
Download from Www.Somanuals.com. All Manuals Search And Download.
|