SM4T26AY STMicroelectronics, SM4T26AY Datasheet

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SM4T26AY

Manufacturer Part Number
SM4T26AY
Description
TRANSIL 400W 25.7V UNIDIRECT SMA
Manufacturer
STMicroelectronics
Series
TRANSIL™r
Datasheet

Specifications of SM4T26AY

Voltage - Reverse Standoff (typ)
22V
Voltage - Breakdown
24.4V
Power (watts)
400W
Polarization
Unidirectional
Mounting Type
Surface Mount
Package / Case
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
497-10914-2
Features
Complies with the following standards
September 2010
peak pulse power:
– 400 W (10/1000 µs)
– 2.3 kW (8/20 µs)
stand-off voltage range: from 5 V to 58 V
unidirectional and bidirectional types
low leakage current:
– 0.2 µA at 25 °C
– 1 µA at 85 °C
operating T
high power capability at T
– 270 W (10/1000 µs)
JEDEC registered package outline
resin meets UL 94, V0
AEC-Q101 qualified
IEC 61000-4-2 level 4:
– 15 kV (air discharge)
– 8 kV (contact discharge)
ISO 10605, C = 330 pF, R = 330
– 15 kV (air discharge)
– 8 kV (contact discharge)
ISO 7637-2 (for pulse 1 and 2a, applicable only
to parts with stand-off voltage (V
the average battery voltage: 13.5 V):
– pulse 1: V
– pulse 2a: V
– pulse 3a: V
– pulse 3b: V
j max
S
S
S
S
= -100 V
: 150 °C
= +50 V
= -150 V
= +100 V
j max
:
RM
) lower than
Doc ID 17862 Rev 1
Description
The SM4TY Transil series has been designed to
protect sensitive automotive circuits against
surges defined in ISO 7637-2 and against
electrostatic discharges according to
IEC 61000-4-2 and ISO 10605.
The planar technology makes it compatible with
high-end circuits where low leakage current and
high junction temperature are required to provide
reliability and stability over time. SM4TY devices
are packaged in SMA (SMA footprint in
accordance with IPC 7531 standard).
TM: Transil is a trademark of STMicroelectronics
Automotive 400 W Transil™
K
Unidirectional
(JEDEC DO-214AC)
A
SMA
Bidirectional
SM4TY
www.st.com
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SM4T26AY Summary of contents

Page 1

... SM4TY devices are packaged in SMA (SMA footprint in accordance with IPC 7531 standard). ) lower than RM TM: Transil is a trademark of STMicroelectronics Doc ID 17862 Rev 1 SM4TY A K Unidirectional Bidirectional ...

Page 2

Characteristics 1 Characteristics Table 1. Absolute maximum ratings (T Symbol V Peak pulse voltage PP P Peak pulse power dissipation PP T Storage temperature range stg T Operating junction temperature range j T Maximum lead temperature for soldering during 10 ...

Page 3

... SM4TY Table 3. Electrical characteristics, typical values if not otherwise stated (T I max@V RM Order code 25 °C 85 °C µA SM4T6V7CAY 20 50 SM4T18AY/CAY 0.2 1 SM4T21AY/CAY 0.2 1 SM4T23AY/CAY 0.2 1 SM4T26AY/CAY 0.2 1 SM4T28AY/CAY 0.2 1 SM4T30AY/CAY 0.2 1 SM4T33AY/CAY 0.2 1 SM4T35AY/CAY 0.2 1 SM4T39AY/CAY 0.2 1 SM4T47AY/CAY 0.2 1 SM4T56AY/CAY 0.2 1 SM4T68AY/CAY ...

Page 4

Characteristics Figure 3. Peak pulse power dissipation versus initial junction temperature P (W) PP 500 400 300 200 100 100 Figure 5. Clamping voltage versus peak pulse current (exponential waveform, maximum values) I (A) PP ...

Page 5

SM4TY Figure 9. Thermal resistance junction to ambient versus copper surface under each lead R (°C/W) th(j-a) 130 120 Printed circuit board FR4, copper thickness = 35 µm 110 100 ...

Page 6

Characteristics Figure 12. ISO7637-2 pulse 1 response (V Voltage ( -10 -20 -30 -40 -50 -0.5 Current ( 0.0 -10 -15 -0.5 Figure 13. ISO7637-2 pulse 2 response (V Voltage ( ...

Page 7

SM4TY Figure 14. ISO7637-2 pulse 3a response (V Voltage ( -10 -20 -30 -40 -50 -60 -0.2 Current (A) 0.5 0 -0.5 -1 -1.5 -2 -2.5 -0.2 Figure 15. ISO7637-2 pulse 3b response (V Voltage (V) ...

Page 8

Application and design guidelines 2 Application and design guidelines More information is available in the Application note AN2689 “Protection of automotive electronics from electrical hazards, guidelines for design and component selection”. 3 Ordering information scheme Figure 16. Ordering information scheme ...

Page 9

SM4TY 4 Package information ● Case: JEDEC DO-214AB molded plastic over planar junction ● Terminals: solder plated, solderable as per MIL-STD-750, Method 2026 ● Polarity: for unidirectional types the band indicates cathode ● Flammability: epoxy is rated UL 94, V0 ...

Page 10

... Package information Table 5. Marking Order code SM4T18AY SM4T21AY SM4T23AY SM4T26AY SM4T28AY SM4T30AY SM4T33AY SM4T35AY SM4T39AY SM4T47AY SM4T56AY SM4T68AY 10/12 Marking Order code SM4T6V7CAY BMY SM4T18CAY DUQY SM4T21CAY DURY SM4T23CAY DUSY SM4T26CAY DUTY SM4T28CAY DUUY SM4T30CAY CGY SM4T33CAY CKY SM4T35CAY CMY SM4T39CAY ...

Page 11

SM4TY 5 Ordering information Table 6. Ordering information Order code (1) SM4TxxxAY/CAY 1. Where xxx is nominal value of V Table 3 for list of available devices and their order codes 6 Revision history Table 7. Document revision history Date ...

Page 12

... 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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