SM712 AITSEMI | Alldatasheet
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AiT Semiconductor Inc. www.ait-ic.com SM712 TVS 400W ASYMMETRICAL TVS DIODE ARRAY REV1.0 - NOV 2021 RELEASED - - 1 - DESCRIPTION FEATURES The SM712 transient voltage suppressor (T VS) diode is designed for asymmetrical (12V to 7V ) protection in multi -point data transmission standard RS-485 applications. The SM712 may be used to protect devices from transient voltages resulting from electrostatic discharge (ESD), electrical fast transients (FET), and lightning. The SM712 features
400 Watts (tp=8/20μs) of power handling capability to
accommodate the higher transient voltage levels which may be expected in extended common mode applications. This provides higher equipment reliability and eliminates the “ guess work” required when using zener diodes that are not rated to handle such transient conditions. The integrated design aids in reducing voltage over-shoot associated with trace inductance. The low clamping voltage of the SM712 minimizes the stress on the protected transceiver. The SM712 is available in SOT-23 package ⚫ 400 watts peak pulse power (tp=8/20μs) ⚫ Transient protection for asymmetrical data lines to -IEC 61000-4-2 (ESD) ±15kV(air), ±8kV(contact) -IEC 61000-4-4 (FET) 40A (5/50ns) -IEC 61000-4-5 (Lightning) 12A (8/20μs) ⚫ Protects two +12V to -7V lines ⚫ Low capacitance ⚫ Low leakage current ⚫ Low clamping voltage ⚫ Solid-state silicon avalanche technology ⚫ High temperature soldering guaranted:260℃/10s ⚫ Available in SOT-23 package
APPLICATIONS
⚫ Protection of RS-485 transceivers with extended ⚫ Security systems ⚫ Automatic Teller Machines (ATMs) ⚫ Lighting Control – DALI ⚫ Communication Equipments ⚫ Fieldbus ⚫ Modbus ⚫ Profibus ⚫ DMX512 ⚫ HFC systems ⚫ Networks
ORDERING INFORMATION
Note SPQ: 3,000pcs/Reel AiT provides all RoHS Compliant Products PIN CONFIGURATION
AiT Semiconductor Inc. www.ait-ic.com SM712 TVS 400W ASYMMETRICAL TVS DIODE ARRAY REV1.0 - NOV 2021 RELEASED - - 2 - ABSOLUTE MAXIMUM RATINGS PPP, Peak Pulse Power (8/20us) 400W IPP, Peak Pulse Current (8/20us) 17A VESD, ESD per IEC 61000-4-2 Air ±15kV Contact ±8kV TOPT, Operating Temperature -55°C~150°C TSTG, Storage Temperature -55°C~150°C Stresses above may cause permanent damage to the device. These are stress rat ings only and functional operation of the device at these or any other conditions beyond those indicated in the Electrical Characteristics are not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
Tamb=25℃ Parameter Symbol Conditions Pin 1 or Pin 2 to Pin 3 (12V) TVS Pin 3 to Pin 1 or Pin 2 (7V) TVS Unit Reverse Working Voltage VRWM Pin 3 to 1 or Pin 2 to 1 - - 12 - - 7 V Reverse Breakdown Voltage VBR IT = 1mA 13.3 - - 7.5 - - V Reverse Leakage Current IR VR = VRWM - - 1 - - 20 μA Clamping Voltage 1 VC1 IPP = 5A, tp = 8/20μs - - 20 - - 10 V Clamping Voltage 2 VC2 IPP = 17A, tp = 8/20μs - - 26 - - 12 V Junction Capacitance 1 CJ1 VR = 0V, f = 1MHz - - 75 - - 75 pF Junction Capacitance 2 CJ2 VR = VRWM, f = 1MHz - 45 - - 45 - pF
AiT Semiconductor Inc. www.ait-ic.com SM712 TVS 400W ASYMMETRICAL TVS DIODE ARRAY REV1.0 - NOV 2021 RELEASED - - 4 - DETAILED INFORMATION Circuit Diagram
AiT Semiconductor Inc. www.ait-ic.com SM712 TVS 400W ASYMMETRICAL TVS DIODE ARRAY REV1.0 - NOV 2021 RELEASED - - 5 -
PACKAGE INFORMATION
Dimension in SOT-23 (Unit: mm) Symbol Min Max A 1.00 1.40 A1 - 0.10 b 0.35 0.50 c 0.10 0.20 D 2.70 3.10 E 1.40 1.60 E1 2.40 2.80 e 1.90 TYP L 0.10 0.30 L1 0.40 - θ 0° 10°
AiT Semiconductor Inc. www.ait-ic.com SM712 TVS 400W ASYMMETRICAL TVS DIODE ARRAY REV1.0 - NOV 2021 RELEASED - - 6 - IMPORTANT NOTICE AiT Semiconductor Inc. (AiT) reserves the right to make changes to an y its product, specifications, to discontinue any in tegrated circuit product or service without notice, and advises its customers to obtain the latest version of relevant information to verify, before placing o rders, that the information being relied on is current. AiT Semiconductor Inc. 's integrated circu it products are not designed, intended, authorized, or warranted to be suitable for use in life s upport applications, devices or systems or other critical app lications. Use of AiT products in such applications is understood to be fully at the risk of the customer. As used herein may involve potential risks of death, personal injury, or servere propert y, or environmental damage. In order to minimize risks associ ated with the customer's applications, the cus tomer should provide adequate design and operating safeguards. AiT Semiconductor Inc . assumes to no liability to customer product desi gn or applicat ion support. AiT warrants the performance of its products of the specifications applicable at the time of sale.