DS9502P DALLAS [Dallas Semiconductor], DS9502P Datasheet
DS9502P
Manufacturer Part Number
DS9502P
Description
ESD Protection Diode
Manufacturer
DALLAS [Dallas Semiconductor]
Datasheet
1.DS9502P.pdf
(3 pages)
Available stocks
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Manufacturer
Quantity
Price
Part Number:
DS9502P
Manufacturer:
DALLAS
Quantity:
20 000
Company:
Part Number:
DS9502P+
Manufacturer:
DALLAS
Quantity:
1 000
www.dalsemi.com
SPECIAL FEATURES
§ Zener characteristic with voltage snap–back
§ High avalanche voltage, low leakage and low
§ Compatible to all 5V logic families
§ Space saving, low inductance TSOC surface
§ Symmetric dual–port bondout to maximize
§ Industrial temperature range
DESCRIPTION
This DS9502 was designed as an additional ESD protection for SRAM–based battery–buffered portable
memory modules. The memory chips used for these modules have already a strong ESD–protection
structure on their I/O line. Together with the DS9502 the ESD protection level is raised to more than
27 kV (IEC 801–2 Reference model). In case of abnormal ESD hits beyond its maximum ratings the
DS9502 will eventually fail “short” thus preventing further damage.
During normal operation the DS9502 behaves like a regular 7.5V Zener Diode. When the voltage exceeds
the trigger voltage, the I/V characteristic of the device will “snapback” allowing the same or higher
amount of current to flow, but at a significantly lower voltage. As long as a minimum current or voltage
is maintained, the device will stay in the “snapback mode”. If the voltage or the current falls below the
holding voltage or holding current, the device will abruptly change to its normal mode and conduct only a
small leakage current.
to protect against ESD hits
capacitance avoid signal attenuation
mount package
energy dissipation in protection device
1 of 3
SYMBOL AND CONVENTIONS
PACKAGE OUTLINE
ORDERING INFORMATION
DS9502P
1
2
3
See Mech. Drawings
3.7 X 4.0 X 1.5 mm
TOP VIEW
ESD Protection Diode
Section
TSOC SURFACE MOUNT PACKAGE
6-lead TSOC package
IC
C
A
6
5
4
VCA
DS9502
SIDE VIEW
102199
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DS9502P Summary of contents
Page 1
... ESD Protection Diode SYMBOL AND CONVENTIONS PACKAGE OUTLINE TSOC SURFACE MOUNT PACKAGE TOP VIEW 3.7 X 4.0 X 1.5 mm See Mech. Drawings Section ORDERING INFORMATION DS9502P 6-lead TSOC package DS9502 VCA 6 5 SIDE VIEW 4 102199 ...
Page 2
DC CHARACTERISTICS Figure 1 DC CHARACTERISTICS DETAIL DRAWING Figure 2 TEST PULSE WAVEFORM Figure 3 TYPICAL APPLICATION Figure DS9502 102199 ...
Page 3
PHYSICAL SPECIFICATIONS Size Weight ABSOLUTE MAXIMUM RATINGS* Operating Temperature Storage Temperature Soldering Temperature Continuous DC Current Through Package * This is a stress rating only and functional operation of the device at these or any other conditions above those indicated ...