SMA4F STMicroelectronics, SMA4F Datasheet

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SMA4F

Manufacturer Part Number
SMA4F
Description
High Junction Temperature Transil?
Manufacturer
STMicroelectronics
Datasheet

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Part Number:
SMA4F5.0A-TR
Manufacturer:
STMicroelectronics
Quantity:
46 196
Features
Complies with the following standards
September 2008
ECOPACK2
Peak pulse power:
– 400 W (10/1000 µs)
– 3 kW (8/20 µs)
Stand off voltage: 5 V
Unidirectional type
Low clamping voltage versus standard series
Low leakage current, 10 µA at 25 °C
Operating T
JEDEC registered package outline
IEC 61000-4-2 level 4:
– 15 kV (air discharge)
– 8 kV (contact discharge)
MIL STD 883G-Method 3015-7: class3B
– 25 kV (human body model)
j
®
max: 175 °C
halogen-free component
High junction temperature Transil™
Rev 1
Description
The SMA4F Transil series has been designed to
protect sensitive equipment against electrostatic
discharges according to IEC 61000-4-2, MIL STD
883 Method 3015, and electrical over stress such
as IEC 61000-4-4 and 5. They are generally for
surges below 400 W 10/1000 µs.
This planar technology makes it compatible with
high-end equipment and SMPS where low
leakage current and high junction temperature are
required to provide reliability and stability over
time. Their low clamping voltages provides a
better safety margin to protect sensitive circuits
with extended life time expectancy.
Packaged in SMAflat non exposed pad, this
minimizes PCB space consumption (footprint in
accordance with IPC 7531 standard).
TM: Transil is a trademark of STMicroelectronics
K
Unidirectional
SMAflat
A
SMA4F
www.st.com
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SMA4F Summary of contents

Page 1

... High junction temperature Transil™ K Unidirectional SMAflat Description The SMA4F Transil series has been designed to protect sensitive equipment against electrostatic discharges according to IEC 61000-4-2, MIL STD 883 Method 3015, and electrical over stress such as IEC 61000-4-4 and 5. They are generally for surges below 400 W 10/1000 µ ...

Page 2

... Value T initial = T 400 j amb initial = T j amb -65 to +175 -55 to +175 260 Value SMA4F Unit W A °C °C °C Unit °C/W ...

Page 3

... SMA4F Table 4. Electrical characteristics - values (T I max@V RM Type 25 °C 85 °C µA (Max) SMA4F5. Pulse test: t <50ms calculate maximum clamping voltage at other surge currents, use the following formula CLmax D PP BRmax 3. To calculate V versus junction temperature, use the following formula: ...

Page 4

... Junction capacitance versus reverse applied voltage (typical values) 4/9 SMA4F5. ( C(pF) 3000 2500 2000 1500 1000 500 V ( initial=25 ° 8/20 µ 8/20 µ 10/1000 µ 10/1000 µ F=1 MHz V =30 mV OSC RMS T =25 °C j SMA4F5. SMA4F ...

Page 5

... FM 1.E-03 1.E-03 1.0 1.2 1.4 Figure 9. 1.E+03 1.E+02 1.E+01 Characteristics Relative variation of thermal impedance junction to ambient versus pulse duration (printed ciruit board FR4 th(j-a) th(j-a) On recommended pad layout t (S) p 1.E-02 1.E-01 1.E+00 1.E+01 Leakage current versus junction temperature (typical values) I (nA) R SMA4F5.0A T (° 100 125 2 ) 1.E+02 1.E+ 150 175 5/9 ...

Page 6

... Ordering information scheme 2 Ordering information scheme Figure 10. Ordering information scheme Surface Mount Package A = SMAflat Surge rating 4F = 400 W Stand off voltage example: 5.0 = 5.0 V Type A = Unidirectional Delivery mode TR = Tape and reel 6 SMA4F ...

Page 7

... SMA4F 3 Package information ● Case: JEDEC DO-221AC molded plastic over Planar junction ● Terminals: Solder plated, solderable per MIL-STD-750, Method 2026 ● Polarity: Band indicates cathode ● Flammability: Epoxy rated UL94V-0 ● RoHS package In order to meet environmental requirements, ST offers these devices in ECOPACK packages ...

Page 8

... Ordering information 4 Ordering information Table 6. Ordering information Order code SMA4F5.0A-TR 5 Revision history Table 7. Document revision history Date 04-Sep-2008 8/9 Marking Package SAE SMAflat Revision 1 First issue. SMA4F Weight Base qty Delivery mode 0.035 g 10 000 Tape and reel Changes ...

Page 9

... SMA4F Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. ...

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