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Vishay General Semiconductor - Diodes Division SMC5K30CA-M3/H
- Part No.:
- SMC5K30CA-M3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMC5K30CA-M3/H.pdf
- Description:
- TVS DIODE 30VWM 48.4VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,405
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Product details
Overview
SMC5K30CA-M3/H from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection on power and signal lines. It features a 30 V stand-off voltage (VWM), 33.3–36.8 V breakdown voltage (VBR), 48.4 V clamping voltage at 103 A (10/1000 μs), and 5000 W peak pulse power rating - deployed to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial power systems.
For engineers reviewing the SMC5K30CA-M3/H datasheet, SMC5K30CA-M3/H pinout, SMC5K30CA-M3/H application, or SMC5K30CA-M3/H equivalent, key selection criteria include clamping performance under 10/1000 μs transients, AEC-Q101 qualification status, thermal resistance (RthJA = 90 °C/W), junction temperature range (–55 to +175 °C), and compatibility with lead-free reflow profiles up to 260 °C.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector, responding within picoseconds to transient overvoltages induced by inductive switching or lightning surges. Its bidirectional architecture enables symmetrical clamping across both polarities without polarity marking, and its low incremental surge resistance ensures minimal voltage overshoot during high-current events.
The device is rated for 5000 W peak pulse power (10/1000 μs) and 40 kW (8/20 μs), with thermal design supported by RthJM = 4.0 °C/W and RthJA = 90 °C/W on standard FR4 PCBs. It meets MSL Level 1 per J-STD-020 and passes JESD201 Class 2 whisker testing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - maximum continuous reverse operating voltage before conduction begins; defines safe operating margin below clamping threshold |
| VBR (min/max) | 33.3 V / 36.8 V at 1.0 mA - verified breakdown onset range; ensures predictable turn-on behavior across production lot |
| VC @ IPPM | 48.4 V at 103 A (10/1000 μs) - clamping voltage under standardized surge; determines protected circuit's maximum transient exposure |
| PPPM | 5000 W - peak pulse power handling capability; supports robust protection against IEC 61000-4-5 level 4 surges |
| TJ max. | +175 °C - maximum junction temperature; enables reliable operation in under-hood automotive and high-ambient industrial environments |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD stress per AEC specification |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 7.11 mm × 6.22 mm footprint and 2.62 mm height; compatible with automated assembly |
Pinout & Package
SMC5K30CA-M3/H uses a 2-terminal SMC (DO-214AB) package with no polarity marking due to bidirectional construction. Terminals are matte tin-plated leads, solderable per J-STD-002 and JESD22-B102, and meet JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (bidirectional) | Surge current path | Both terminals function identically; no cathode band required - simplifies PCB layout and eliminates orientation errors during placement |
| Cathode/Anode (bidirectional) | Surge current return path | Same electrical role as first terminal; symmetric clamping ensures identical protection for positive and negative transients |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity constraints |
| 48.4 V clamping at 103 A (10/1000 μs) | Provides defined overvoltage ceiling for downstream 3.3 V/5 V/12 V logic and power stages |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body electronics, and ADAS modules requiring long-term field reliability |
| UL 497B recognition (E136766) | Confirms compliance with safety standards for telecom and industrial interface protection circuits |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free SMT processes without preconditioning or special handling |
Applications
| Automotive Power Distribution | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs and lighting drivers from load-dump and jump-start transients. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed at input filter stage to clamp surges before DC/DC converters and microcontrollers. Use Value: Withstands 5000 W pulses and maintains clamping below 48.4 V, preventing latch-up or damage to downstream 3.3 V/5 V logic. |
Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) connected to PLC I/O modules in factory automation. IC Role / Device Role / Timing Role: Bidirectional TVS mounted directly at connector entry point to absorb ESD and fast-rising line transients. Use Value: 30 V VWM aligns with typical 24 V sensor supply rails; 30 kV HBM ESD immunity prevents field failures in unshielded wiring environments. |
| Telecom Line Card Surge Protection | Computer Peripheral Port Protection |
|
Use Scenario: Guarding Ethernet PHY power rails and data lines in base station remote radio units exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary-level TVS on 48 V bias lines and secondary-level protection on differential signal pairs via series impedance matching. Use Value: 40 kW rating (8/20 μs) meets IEC 61000-4-5 Level 4 requirements; bidirectional symmetry avoids polarity-sensitive routing. |
Use Scenario: Securing USB-C and HDMI port power and sideband use (SBU) lines in docking stations and monitors against user-handling ESD. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF at 0 V) shunt protector placed adjacent to connector to minimize stub length and preserve signal integrity. Use Value: Clamps transients within <1 ps response time while maintaining VWM margin above 5 V bus; UL 497B certification supports end-equipment safety approvals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ30CA-E3/5A (Vishay) | Lower peak pulse power (400 W vs. 5000 W); SMA package (smaller footprint, higher RthJA) | Suitable for lower-energy ESD-only scenarios; not rated for IEC 61000-4-5 line surges | Select when board space is constrained and surge energy is limited to human-body-model ESD (≤15 kV) |
| 1.5KE30CA (ON Semiconductor) | Higher RthJA (100 °C/W); through-hole DO-201 package; same VWM/VC specs but lower surge repetition tolerance | Used in legacy designs or where manual assembly or high-reliability through-hole mounting is required | Choose only if SMC surface-mount is incompatible with manufacturing process or thermal management constraints prevent adequate heatsinking |
Compared with SMAJ30CA-E3/5A and 1.5KE30CA, SMC5K30CA-M3/H delivers 12.5× higher pulse power handling and AEC-Q101 qualification - making it the preferred choice for automotive and industrial applications demanding sustained surge resilience and automotive-grade reliability validation.
Availability
SMC5K30CA-M3/H is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface protection, telecom line card surge protection, and computer peripheral port protection requiring stable component supply and long-term lifecycle support.
Supply support for SMC5K30CA-M3/H 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 high-reliability and automotive-qualified components.
The SMC5KxxCA family was engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where failure modes must be mitigated under extreme surge, temperature, and vibration conditions.
FAQ
What is the clamping voltage of SMC5K30CA-M3/H at its rated peak pulse current?
The SMC5K30CA-M3/H has a maximum clamping voltage (VC) of 48.4 V at 103 A under the 10/1000 μs waveform. This value is measured per Figure 3 in the Vishay datasheet (Doc. #87024) and defines the upper voltage limit imposed on protected circuitry during standardized surge events. The SMC5K30CA-M3/H maintains this clamping performance across its full operating temperature range.
Is SMC5K30CA-M3/H qualified for automotive applications?
Yes, SMC5K30CA-M3/H is AEC-Q101 qualified, as confirmed in the Vishay datasheet revision dated 10-Sep-2024. This qualification covers stress tests including high-temperature reverse bias, temperature cycling, and ESD per JESD22-A114. The SMC5K30CA-M3/H is approved for use in automotive powertrain, body control, and ADAS modules where transient immunity and long-term reliability are critical.
What does the "-M3/H" suffix indicate in SMC5K30CA-M3/H?
The "-M3" suffix denotes halogen-free, RoHS-compliant, industrial-grade construction with matte tin-plated leads meeting JESD201 Class 2 whisker resistance. The "/H" indicates packaging in 7-inch plastic tape and reel, with a base quantity of 850 units per reel. This configuration is optimized for high-volume SMT assembly and complies with JEDEC moisture sensitivity level (MSL) 1 requirements.
How does SMC5K30CA-M3/H compare to unidirectional TVS diodes in circuit protection?
SMC5K30CA-M3/H is bidirectional, meaning it clamps symmetrically for both positive and negative transients without requiring polarity-aware layout. Unlike unidirectional TVS diodes - which need correct anode/cathode orientation and only protect one polarity - the SMC5K30CA-M3/H simplifies design for AC-coupled, floating, or differential lines. Its lack of cathode band eliminates placement errors and reduces BOM complexity.
What is the thermal resistance profile of SMC5K30CA-M3/H, and how does it impact PCB layout?
The SMC5K30CA-M3/H has RthJA = 90 °C/W (junction-to-ambient, FR4, 2 oz copper) and RthJM = 4.0 °C/W (junction-to-mount). These values require adequate copper pour area beneath the SMC pad and short thermal vias to inner ground planes for high-duty-cycle surge applications. Layouts ignoring thermal resistance risk exceeding the +175 °C TJ max. during repeated 5000 W pulses - a key design consideration for the SMC5K30CA-M3/H.
SMC5K30CA-M3/H 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):
- 30V
- Voltage - Breakdown (Min):
- 33.3V
- Voltage - Clamping (Max) @ Ipp:
- 48.4V
- Current - Peak Pulse (10/1000µs):
- 103A
- 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)
SMC5K30CA-M3/H FAQ
1.How can I place an order for SMC5K30CA-M3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMC5K30CA-M3/H 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 SMC5K30CA-M3/H reliable?
The price and inventory of SMC5K30CA-M3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMC5K30CA-M3/H is usually 5 days.
3.What payment methods are accepted for SMC5K30CA-M3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMC5K30CA-M3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMC5K30CA-M3/H?
SMC5K30CA-M3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMC5K30CA-M3/H 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 SMC5K30CA-M3/H?
For technical support, including SMC5K30CA-M3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMC5K30CA-M3/H requirements.
6.How does Aetrix verify that SMC5K30CA-M3/H is sourced from the original manufacturer or authorized distributors?
All SMC5K30CA-M3/H 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 SMC5K30CA-M3/H meets industry standards.
7.What is the process for return or replacement of SMC5K30CA-M3/H?
All SMC5K30CA-M3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMC5K30CA-M3/H, 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 SMC5K30CA-M3/H part is unused and in its original packaging.
Return procedure for SMC5K30CA-M3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMC5K30CA-M3/H Tags
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