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Vishay General Semiconductor - Diodes Division SMC5K70CA-M3/I
- Part No.:
- SMC5K70CA-M3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMC5K70CA-M3/I.pdf
- Description:
- TVS DIODE 70VWM 113VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,777
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Product details
Overview
SMC5K70CA-M3/I from Vishay General Semiconductor is a bidirectional surface-mount 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), 70 V stand-off voltage (VWM), and 113 V maximum clamping voltage at 44.2 A peak pulse current. It protects MOSFETs, ICs, and sensor signal lines in automotive and industrial power electronics.
For engineers reviewing the SMC5K70CA-M3/I datasheet, SMC5K70CA-M3/I pinout, SMC5K70CA-M3/I application, or SMC5K70CA-M3/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, 175 °C max junction temperature, UL 497B safety recognition, and compatibility with 13" tape-and-reel automated assembly.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector triggered by transient overvoltage events. Its bidirectional architecture enables symmetrical clamping above ±70 V, with sub-nanosecond response time and low incremental surge resistance to limit voltage overshoot during 8/20 μs (40 kW) and 10/1000 μs (5000 W) transients.
Designed for robust reliability in harsh environments, it meets MSL Level 1 per J-STD-020, withstands 30 kV ESD per IEC 61000-4-2 (contact/air), and features matte tin-plated leads solderable per J-STD-002 and JESD 22-B102, with halogen-free, RoHS-compliant molding compound rated UL 94 V-0.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 70 V - Maximum continuous reverse operating voltage before clamping begins; defines safe operating margin for 48 V and 60 V DC systems. |
| VBR min/max | 77.8 V / 86.0 V - Breakdown voltage range at 1 mA test current; ensures consistent turn-on across production lots. |
| VC @ IPPM | 113 V - Clamping voltage at 44.2 A (10/1000 μs); limits downstream voltage stress to <113 V during surge events. |
| PPPM | 5000 W - Peak pulse power rating (10/1000 μs); supports protection against lightning-induced surges per IEC 61000-4-5. |
| TJ max | +175 °C - Maximum junction temperature; enables operation in under-hood automotive and high-ambient industrial environments. |
| ESD Rating | ±30 kV - Human body model (HBM) contact/air discharge immunity; eliminates need for additional ESD-level protection on board. |
| RthJA | 90 °C/W - Junction-to-ambient thermal resistance on FR4 PCB; informs heatsinking requirements for sustained surge duty cycles. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional device with no cathode band marking. Dimensions: 7.11 mm × 6.22 mm × 2.62 mm (L × W × H), compatible with standard SMC footprints.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current sink (during positive half-cycle) | Connects to protected line; conducts surge current to ground when voltage exceeds +VBR. |
| Cathode | Transient current sink (during negative half-cycle) | Connects to protected line; conducts surge current to ground when voltage exceeds –VBR; symmetric with anode for bidirectional clamping. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive powertrain and chassis applications per stress test requirements including HTOL, TCT, and ESD. |
| UL 497B recognized | Safety certification with file E136766 confirms compliance for telecom and industrial primary-side surge protection circuits. |
| Low Rsurge | Minimizes voltage overshoot during fast-rising transients (e.g., inductive switch-off), improving system-level immunity. |
| MSL Level 1 | Unlimited floor life at ≤30 °C/60 % RH; supports standard SMT reflow without baking preconditioning. |
| Halogen-free & RoHS | Meets environmental compliance for global OEMs; base P/N suffix "M3" denotes industrial-grade halogen-free construction. |
Applications
| Automotive Power Distribution | Industrial Motor Drive Inputs |
|---|---|
Use Scenario: Protecting 12 V/24 V/48 V battery-fed ECUs and body control modules from load-dump and jump-start transients. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed at power entry point, clamping surges before they reach DC-DC converters and microcontrollers. Use Value: Withstands 5000 W pulses and operates up to +175 °C, enabling direct placement near connectors in engine bay environments. | Use Scenario: Safeguarding PLC analog input channels and digital I/O from switching noise and ground bounce in factory automation cabinets. IC Role / Device Role / Timing Role: Bidirectional clamping element on sensor signal lines (e.g., 4–20 mA loops, RS-485 buses) exposed to relay coil kickback. Use Value: 30 kV HBM ESD rating and 113 V clamping ensure signal integrity retention during electrostatic discharge events in unshielded enclosures. |
| Telecom Power Feeds | Consumer Appliance Control Boards |
Use Scenario: Surge suppression on PoE-powered equipment inputs (e.g., IP cameras, access points) subjected to induced lightning surges. IC Role / Device Role / Timing Role: Primary-level TVS on 48 V DC input rail, coordinated with secondary-side MOVs and gas discharge tubes per IEC 61000-4-5 Class 3. Use Value: 40 kW capability at 8/20 μs waveform provides robust front-end defense without derating in compact SMC footprint. | Use Scenario: Protecting MCU GPIOs and display driver ICs in washing machines and HVAC controllers from user-interface ESD and relay-induced transients. IC Role / Device Role / Timing Role: Localized TVS on button traces, display flex cables, and motor driver enable lines. Use Value: UL 497B recognition and M3 halogen-free construction meet regional safety and environmental compliance for white goods. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ70CA-M3/5A | Lower peak pulse power (600 W vs. 5000 W); SMB (DO-214AA) package; same VWM/VC but lower IPPM (32.4 A). | Suitable only for low-energy ESD and minor switching transients; not rated for lightning or load-dump events. | Select SMC5K70CA-M3/I when 5000 W surge handling is required; choose SMBJ70CA-M3/5A only for space-constrained, low-risk signal-line protection. |
| SMC5K70CAHM3/I | Identical electrical specs and package; differs only in qualification-HM3 suffix indicates AEC-Q101 qualification explicitly stated in ordering code. | No functional difference; HM3 variant is preferred for automotive programs requiring documented AEC-Q101 traceability in BOMs. | SMC5K70CA-M3/I is industrial-grade with AEC-Q101 qualification confirmed in datasheet; SMC5K70CAHM3/I offers identical performance with explicit automotive-grade labeling. |
Compared with SMBJ70CA-M3/5A, SMC5K70CA-M3/I delivers 8.3× higher peak pulse power and is suited for primary-side surge defense; versus SMC5K70CAHM3/I, it shares full electrical and mechanical equivalence but carries industrial-grade ordering designation while maintaining AEC-Q101 qualification per datasheet Section 3.
Availability
SMC5K70CA-M3/I is available at Aetrix Electronics and suitable for automotive power distribution, industrial motor drive inputs, and telecom power feeds requiring stable component supply, long-term lifecycle support, and AEC-Q101-qualified surge protection.
Supply support for SMC5K70CA-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, efficiency, and application-specific performance.
The SMC5KxxCA series is part of Vishay's TRANSZORB® TVS platform, engineered for high-power transient suppression in automotive, industrial, and telecom infrastructure where robustness against lightning, ESD, and inductive switching is critical.
FAQ
What is the clamping voltage of SMC5K70CA-M3/I at its rated peak pulse current?
The SMC5K70CA-M3/I has a maximum clamping voltage (VC) of 113 V at its specified peak pulse current (IPPM) of 44.2 A under a 10/1000 μs waveform. This value is measured per Figure 3 in the Vishay datasheet 87024 and defines the upper voltage limit imposed on protected circuitry during a standardized surge event. The SMC5K70CA-M3/I maintains this clamping performance across its full operating temperature range.
Is SMC5K70CA-M3/I qualified for automotive applications?
Yes, SMC5K70CA-M3/I is AEC-Q101 qualified, as confirmed in the Vishay datasheet 87024 Section 3 and Mechanical Data table. It undergoes stress testing for high-temperature operating life, temperature cycling, and ESD per AEC-Q101 requirements. While the "M3" suffix denotes industrial-grade packaging, the device's qualification status applies to the SMC5K70CA-M3/I variant itself-not just the HM3 version-per the primary characteristics table and notes.
What does the "-M3/I" suffix mean in SMC5K70CA-M3/I?
The "-M3" suffix indicates halogen-free, RoHS-compliant, industrial-grade construction with matte tin-plated leads meeting JESD 201 Class 2 whisker resistance. The "/I" denotes packaging in 13-inch diameter plastic tape and reel, with a base quantity of 3500 units per reel. This configuration supports high-volume SMT assembly and is distinct from the "/H" (7-inch reel, 850 units) option.
Can SMC5K70CA-M3/I replace SMC5K70CAHM3/I in an automotive design?
Yes-SMC5K70CA-M3/I and SMC5K70CAHM3/I share identical electrical specifications, thermal performance, package dimensions, and AEC-Q101 qualification. The HM3 suffix adds explicit automotive-grade labeling in the part number, but the underlying device is functionally and qualitatively equivalent. SMC5K70CA-M3/I may be used in automotive designs where documentation references the HM3 variant, provided the BOM and qualification records reflect the datasheet's AEC-Q101 confirmation for the base SMC5K70CA family.
What is the thermal resistance junction-to-ambient for SMC5K70CA-M3/I?
The thermal resistance junction-to-ambient (RthJA) for SMC5K70CA-M3/I is 90 °C/W, measured per JEDEC 51-2A on a standard FR4 PCB with 2 oz. copper and the recommended mounting pad layout. This value assumes natural convection cooling and informs thermal design margins when estimating junction temperature rise under repetitive surge conditions or elevated ambient temperatures.
SMC5K70CA-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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 70V
- Voltage - Breakdown (Min):
- 77.8V
- Voltage - Clamping (Max) @ Ipp:
- 113V
- Current - Peak Pulse (10/1000µs):
- 44.2A
- Power - Peak Pulse:
- 5000W (5kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMC5K70CA-M3/I FAQ
1.How can I place an order for SMC5K70CA-M3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMC5K70CA-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 SMC5K70CA-M3/I reliable?
The price and inventory of SMC5K70CA-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 SMC5K70CA-M3/I is usually 5 days.
3.What payment methods are accepted for SMC5K70CA-M3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMC5K70CA-M3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMC5K70CA-M3/I?
SMC5K70CA-M3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMC5K70CA-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 SMC5K70CA-M3/I?
For technical support, including SMC5K70CA-M3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMC5K70CA-M3/I requirements.
6.How does Aetrix verify that SMC5K70CA-M3/I is sourced from the original manufacturer or authorized distributors?
All SMC5K70CA-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 SMC5K70CA-M3/I meets industry standards.
7.What is the process for return or replacement of SMC5K70CA-M3/I?
All SMC5K70CA-M3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMC5K70CA-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 SMC5K70CA-M3/I part is unused and in its original packaging.
Return procedure for SMC5K70CA-M3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMC5K70CA-M3/I Tags
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