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Vishay General Semiconductor - Diodes Division SMC5K64A-M3/I
- Part No.:
- SMC5K64A-M3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMC5K64A-M3/I.pdf
- Description:
- TVS DIODE 64VWM 103VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:482
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Product details
Overview
SMC5K64A-M3/I from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection with 5000 W peak pulse power (10/1000 μs), 103 V clamping voltage at 48.5 A, and 71.1–78.6 V breakdown range. It protects MOSFETs, ICs, and sensor signal lines in automotive and industrial power electronics.
For engineers reviewing the SMC5K64A-M3/I datasheet, SMC5K64A-M3/I pinout, SMC5K64A-M3/I application, or SMC5K64A-M3/I equivalent, key selection criteria include clamping voltage (103 V), standoff voltage (64 V), unidirectional polarity, AEC-Q101 qualification status, and SMC package thermal performance (RthJA = 90 °C/W).
Technical Context
This TVS diode operates as a voltage-clamped shunt protector triggered by overvoltage transients. Its unidirectional configuration enables DC-biased line protection with cathode-anode polarity, and its low incremental surge resistance ensures stable clamping under repetitive 10/1000 μs surges up to 5000 W.
It meets IEC 61000-4-2 ESD immunity (30 kV contact/air), UL 497B recognition (E136766), and J-STD-020 MSL Level 1 reflow compatibility (260 °C peak). The device is halogen-free, RoHS-compliant, and qualified per AEC-Q101 - though only SMC5K10A–SMC5K20A variants carry HM3 automotive suffix; SMC5K64A-M3/I is industrial-grade.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 71.1–78.6 V at 1 mA - defines minimum voltage at which device enters avalanche conduction |
| Standoff Voltage VWM | 64 V - maximum continuous reverse operating voltage before leakage exceeds 1 μA |
| Clamping Voltage VC | 103 V at 48.5 A (10/1000 μs) - peak voltage seen by protected circuit during rated surge |
| Peak Pulse Power | 5000 W (10/1000 μs) - energy-handling capability for standard lightning/surge waveforms |
| Junction Temp Range | −55 to +150 °C - supports operation in under-hood automotive and industrial ambient environments |
| ESD Rating | 30 kV HBM (contact & air) - exceeds IEC 61000-4-2 Level 4 for system-level ESD robustness |
| Thermal Resistance | RthJA = 90 °C/W - determines junction temperature rise on standard FR4 PCB with 2 oz copper |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, matte tin-plated leads, halogen-free, RoHS-compliant. Cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal under forward bias; connected to ground or low-side reference in unidirectional TVS configuration | Provides return path for surge current; must be routed with low-inductance trace to minimize clamping overshoot |
| Cathode | Current exit terminal under reverse avalanche; connected to protected line (e.g., power rail or signal) | Defines polarity-sensitive placement - misorientation prevents clamping and risks catastrophic failure |
Key Features
| Feature | Design Value |
|---|---|
| 5000 W peak pulse power (10/1000 μs) | Enables protection against ISO 7637-2 Pulse 5a/b (load dump) and IEC 61000-4-5 surges in 12 V/24 V systems |
| 103 V clamping at 48.5 A | Limits voltage stress on downstream 65 V-rated MOSFETs or 75 V-input DC-DC controllers during surge events |
| AEC-Q101 qualified (industrial grade) | Validated reliability for extended temperature cycling and mechanical shock - suitable for non-safety-critical automotive modules |
| UL 497B recognized (E136766) | Meets safety agency requirements for telecom and industrial equipment input/output port protection |
| MSL Level 1, 260 °C reflow compatible | Supports single-pass lead-free reflow without moisture-induced damage or delamination |
Applications
| Automotive Power Distribution | Industrial Sensor Signal Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump transients during alternator regulation failure. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between battery rail and local regulator input. Use Value: Clamps surge to ≤103 V, preventing overvoltage damage to 65 V-rated buck controllers and gate drivers. | Use Scenario: Shielding analog output lines of pressure/temperature sensors in PLC I/O modules from field wiring ESD and inductive kickback. IC Role / Device Role / Timing Role: Point-of-entry TVS on 4–20 mA or 0–10 V signal traces before conditioning amplifiers. Use Value: Limits transient voltage to <103 V while maintaining sub-1 μA leakage at 64 V, preserving signal accuracy. |
| Telecom DC Power Input | Computer Peripheral Port Protection |
Use Scenario: Safeguarding PoE-powered switch ports against lightning-induced surges on 48 V DC supply lines. IC Role / Device Role / Timing Role: Primary surge clamp on midspan injector output, upstream of DC-DC isolation stage. Use Value: Absorbs 5000 W pulses without degradation, meeting IEC 61000-4-5 Level 4 requirements for Class B equipment. | Use Scenario: Protecting USB-C or HDMI hot-swap interfaces from user-handling ESD and cable discharge events. IC Role / Device Role / Timing Role: Board-level TVS on VBUS and CC lines, placed adjacent to connector footprint. Use Value: Responds in <1 ns to 30 kV HBM discharges, limiting voltage excursion below IC absolute maximum ratings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ64A-M3/87A | Lower peak pulse power (400 W), smaller SMA package, same 64 V VWM and ~104 V VC | Not suitable for load dump; limited to low-energy ESD and coupling transients | Select when board space is constrained and surge energy is <500 W |
| SMCJ64A-M3/87A | Same SMC package, higher 1500 W rating, lower 101 V clamping at 49.7 A | Designed for medium-energy transients; lacks AEC-Q101 qualification and UL 497B recognition | Choose for cost-sensitive industrial designs where automotive qualification is not required |
Compared with SMC5K64A-M3/I, SMAJ64A-M3/87A offers compact size but insufficient energy handling for load dump, while SMCJ64A-M3/87A trades certification for slightly better clamping and lower cost - neither is pin-compatible nor drop-in; layout and qualification review required.
Availability
SMC5K64A-M3/I is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface, and telecom DC input applications requiring stable component supply and long-term production continuity.
Supply support for SMC5K64A-M3/I includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, TVS devices, and optoelectronics with emphasis on reliability and application-specific performance.
The SMC5KxxA family is engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom infrastructure where robustness against load dump, lightning, and ESD is critical.
FAQ
What is the clamping voltage of SMC5K64A-M3/I at its rated peak pulse current?
The SMC5K64A-M3/I has a maximum clamping voltage (VC) of 103 V at 48.5 A peak pulse current under the standard 10/1000 μs waveform. This value is measured per Figure 3 in Vishay document 87742 and defines the upper voltage limit imposed on protected circuits during surge events. The SMC5K64A-M3/I maintains this clamping performance across its operational temperature range.
Is SMC5K64A-M3/I AEC-Q101 qualified?
No, SMC5K64A-M3/I is not AEC-Q101 qualified. Per Vishay documentation, AEC-Q101 qualification applies only to SMC5K10A through SMC5K20A variants with HM3 suffix (e.g., SMC5K20AHM3_A/I). The SMC5K64A-M3/I is an industrial-grade part with halogen-free, RoHS-compliant construction and MSL Level 1 reflow capability, but lacks automotive qualification.
What does the "M3" suffix indicate in SMC5K64A-M3/I?
"M3" denotes Vishay's standard halogen-free, RoHS-compliant termination and packaging option, including matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards, and passing JESD 201 Class 2 whisker testing. The "I" indicates 13-inch tape-and-reel packaging with 3500 units per reel - distinct from "H" (7-inch reel, 850 units).
Can SMC5K64A-M3/I be used in bidirectional configurations?
No, SMC5K64A-M3/I is strictly unidirectional. Its electrical characteristics - including breakdown voltage specification, polarity marking (cathode band), and test conditions - are defined only for reverse-biased operation. For bidirectional protection, a dedicated bidirectional TVS (e.g., SMC5K64CA) or back-to-back unidirectional pair would be required; using SMC5K64A-M3/I in AC or floating applications risks failure.
What is the thermal resistance junction-to-ambient (RthJA) for SMC5K64A-M3/I?
The thermal resistance junction-to-ambient (RthJA) for SMC5K64A-M3/I is 90 °C/W, measured per JEDEC 51-2A on a standard FR4 PCB with 2 oz copper. This value governs temperature rise under sustained power dissipation and informs derating curves in Figure 2 of the datasheet. Actual RthJA may vary with PCB layout, copper area, and airflow - the SMC5K64A-M3/I requires adequate thermal relief pads for reliable operation at elevated ambient temperatures.
SMC5K64A-M3/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 64V
- Voltage - Breakdown (Min):
- 71.1V
- Voltage - Clamping (Max) @ Ipp:
- 103V
- Current - Peak Pulse (10/1000µs):
- 48.5A
- Power - Peak Pulse:
- 5000W (5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMC5K64A-M3/I FAQ
1.How can I place an order for SMC5K64A-M3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMC5K64A-M3/I on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SMC5K64A-M3/I reliable?
The price and inventory of SMC5K64A-M3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMC5K64A-M3/I is usually 5 days.
3.What payment methods are accepted for SMC5K64A-M3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMC5K64A-M3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMC5K64A-M3/I?
SMC5K64A-M3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMC5K64A-M3/I order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SMC5K64A-M3/I?
For technical support, including SMC5K64A-M3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMC5K64A-M3/I requirements.
6.How does Aetrix verify that SMC5K64A-M3/I is sourced from the original manufacturer or authorized distributors?
All SMC5K64A-M3/I products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SMC5K64A-M3/I meets industry standards.
7.What is the process for return or replacement of SMC5K64A-M3/I?
All SMC5K64A-M3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMC5K64A-M3/I, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SMC5K64A-M3/I part is unused and in its original packaging.
Return procedure for SMC5K64A-M3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMC5K64A-M3/I Tags
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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