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Vishay General Semiconductor - Diodes Division SMC5K30A-M3/I
- Part No.:
- SMC5K30A-M3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMC5K30A-M3/I.pdf
- Description:
- TVS DIODE 30VWM 48.4VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,000
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Product details
Overview
SMC5K30A-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 on power and signal lines. It features 33.3 V minimum breakdown voltage (VBR), 30 V stand-off voltage (VWM), 48.4 V maximum clamping voltage at 103 A peak pulse current (10/1000 μs), and 5000 W peak pulse power rating - deployed to safeguard MOSFETs, ICs, and sensor interfaces in automotive and industrial control systems.
For engineers reviewing the SMC5K30A-M3/I datasheet, SMC5K30A-M3/I pinout, SMC5K30A-M3/I application, or SMC5K30A-M3/I equivalent, this page delivers verified electrical parameters, JEDEC-compliant thermal performance, AEC-Q101 qualification status (industrial grade only), UL 497B safety recognition, and precise mechanical dimensions per DO-214AB outline - all critical for ESD/surge co-design and layout validation.
Technical Context
This TVS diode operates as a clamping device in parallel with protected circuitry, activating when reverse voltage exceeds VWM = 30 V and fully clamping at VC = 48.4 V under 103 A (10/1000 μs). Its low incremental surge resistance ensures minimal voltage overshoot during fast transients, while sub-nanosecond response time enables protection against ESD (30 kV HBM) and lightning-induced surges (8/20 μs).
The SMC5K30A-M3/I uses a planar junction structure in an epoxy-molded SMC package rated to TJ = 150 °C, with RthJA = 90 °C/W and RthJM = 4.0 °C/W. It meets J-STD-020 MSL Level 1, JESD201 Class 2 whisker resistance, and UL 497B recognition (E136766), but is not AEC-Q101 qualified - unlike HM3-suffix variants limited to SMC5K10A–SMC5K20A.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 33.3 V / 36.8 V at 1.0 mA test current - defines reliable turn-on threshold under DC stress before clamping begins |
| VWM | 30 V - maximum continuous reverse operating voltage without leakage exceeding 1.0 μA |
| VC @ IPPM | 48.4 V at 103 A (10/1000 μs) - clamping voltage seen by protected load during worst-case surge |
| PPPM | 5000 W (10/1000 μs) - peak transient energy absorption capacity without failure |
| TJ max. | +150 °C - maximum junction temperature enabling operation in under-hood or industrial enclosures |
| ESD Rating | 30 kV per IEC 61000-4-2 (HBM contact/air) - qualifies for direct interface protection in handheld and sensor modules |
| Package | SMC (DO-214AB), 3.20 mm × 5.59 mm footprint - compatible with standard SMT reflow profiles and automated placement |
Pinout & Package
SMC5K30A-M3/I is a two-terminal unidirectional TVS diode in SMC (DO-214AB) surface-mount package. The cathode is marked by a color band on the body; polarity must be observed during PCB layout to ensure correct clamping direction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or lowest potential node; completes clamping path when cathode is tied to protected line |
| Cathode | Protected line connection | Connected to input/power/signal line requiring surge suppression; conducts during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Peak pulse power | 5000 W (10/1000 μs) - sustains high-energy transients common in motor drive and relay switching environments |
| Clamping ratio (VC/VWM) | 1.61 - low ratio minimizes stress on downstream components during surge events |
| Thermal resistance (RthJM) | 4.0 °C/W - enables efficient heat transfer to PCB copper pour or heatsink for repeated surge duty |
| RoHS & halogen-free | M3 suffix confirms compliance with JEDEC J-STD-020 MSL Level 1 and JESD201 Class 2 whisker resistance |
| UL 497B recognition | File E136766 - validates suitability for telecom and industrial safety-critical surge protection circuits |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 24 V CAN bus power rails and LIN transceivers from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Parallel-connected clamping device that diverts surge current away from sensitive PHY ICs during transients up to 103 A. Use Value: Limits voltage excursion to ≤48.4 V during 10/1000 μs surges, preventing latch-up or gate oxide damage in connected transceivers. |
Use Scenario: Shielding analog output lines of pressure/temperature sensors in PLC I/O modules from EFT and ESD coupling. IC Role / Device Role / Timing Role: Fast-response shunt protector placed at connector entry point to clamp transients before reaching ADC front-end. Use Value: Sub-ns response and 30 kV HBM rating suppress air-gap discharges and burst noise without signal distortion. |
| DC-DC Converter Input Stage | Telecom Power Feeding Protection |
|
Use Scenario: Safeguarding primary-side MOSFETs and controller ICs in 48 V telecom rectifiers exposed to lightning-induced surges. IC Role / Device Role / Timing Role: High-power transient suppressor placed across bulk capacitor input to absorb 5000 W surges without thermal runaway. Use Value: 150 °C max junction temperature and 90 °C/W RthJA support sustained operation in sealed enclosures with limited airflow. |
Use Scenario: Protecting PSE (Power Sourcing Equipment) ports in PoE++ switches from cable discharge events and induced surges. IC Role / Device Role / Timing Role: Unidirectional TVS on 57 V power feed lines to clamp overvoltage while maintaining normal forward bias operation. Use Value: 30 V VWM allows stable operation across PoE++ voltage range (52–57 V) with margin before clamping initiates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ30A | Lower PPPM (400 W), smaller SMA package (DO-214AC), same VWM/VC profile but reduced surge handling | Suitable for low-energy signal-line protection only; insufficient for power rail or load-dump scenarios | Select SMAJ30A only when board space is constrained and peak surge current remains below 15 A. |
| SMCJ30A | Same SMC package and VWM, but higher PPPM (1500 W) and lower VC (48.4 V → 45.7 V); no UL 497B recognition | Lacks UL safety certification; acceptable for non-safety-critical industrial controls where certification is not mandated | Choose SMCJ30A if UL recognition is unnecessary and tighter clamping voltage is prioritized over 5000 W capability. |
Compared with SMC5K30A-M3/I, SMAJ30A offers compact size but sacrifices >85 % peak power handling, while SMCJ30A trades UL 497B compliance for marginally better clamping - making SMC5K30A-M3/I the sole choice for certified, high-energy automotive and telecom surge protection.
Availability
SMC5K30A-M3/I is available at Aetrix Electronics and suitable for automotive power line protection, industrial sensor interface hardening, and telecom DC-DC converter input stages requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for SMC5K30A-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, and protection devices with emphasis on reliability, ruggedness, and industry-standard compliance.
The SMC5K30A-M3/I belongs to Vishay's TRANSZORB® family of high-power TVS diodes, engineered specifically for robust surge immunity in harsh automotive, industrial, and telecom environments where 5000 W pulse handling and UL safety recognition are mandatory.
FAQ
What is the maximum clamping voltage of the SMC5K30A-M3/I under a 10/1000 μs surge?
The SMC5K30A-M3/I has a maximum clamping voltage (VC) of 48.4 V when subjected to its rated peak pulse current of 103 A with a 10/1000 μs waveform. This value is measured per Figure 3 in the Vishay datasheet 87742 and represents the upper voltage limit imposed on protected circuitry during worst-case surge conditions. The SMC5K30A-M3/I maintains this clamping performance across its full operating temperature range.
Is the SMC5K30A-M3/I AEC-Q101 qualified?
No, the SMC5K30A-M3/I is not AEC-Q101 qualified. Per Vishay documentation, AEC-Q101 qualification applies only to SMC5K10A through SMC5K20A with HM3 suffix (e.g., SMC5K20AHM3_A/I). The SMC5K30A-M3/I is designated for industrial-grade applications and carries M3 suffix indicating RoHS/halogen-free compliance and JESD201 Class 2 whisker resistance, but lacks automotive qualification.
What does the "-M3/I" suffix indicate in SMC5K30A-M3/I?
The "-M3/I" suffix in SMC5K30A-M3/I specifies both environmental compliance and packaging format: "M3" denotes halogen-free, RoHS-compliant construction meeting JESD201 Class 2 whisker resistance, while "I" indicates 13-inch diameter plastic tape-and-reel packaging containing 3500 units per reel. This differs from "-M3/H", which uses 7-inch reels with 850 units.
Can the SMC5K30A-M3/I replace SMCJ30A in existing designs?
The SMC5K30A-M3/I is physically pin-compatible with SMCJ30A (same SMC/DO-214AB package and polarity marking), but it delivers 3.3× higher peak pulse power (5000 W vs. 1500 W) and carries UL 497B recognition (E136766). Replacement is feasible if board layout and thermal design accommodate the higher energy dissipation, and UL certification is required for end-equipment compliance.
What is the reverse leakage current specification for SMC5K30A-M3/I at its stand-off voltage?
At its rated stand-off voltage (VWM) of 30 V, the SMC5K30A-M3/I exhibits a maximum reverse leakage current of 1.0 μA at TA = 25 °C. This low leakage ensures minimal power loss in always-on protection circuits and avoids false triggering in high-impedance sensor interfaces. Leakage remains within specification up to the full operating temperature range of –55 °C to +150 °C.
SMC5K30A-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):
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMC5K30A-M3/I FAQ
1.How can I place an order for SMC5K30A-M3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMC5K30A-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 SMC5K30A-M3/I reliable?
The price and inventory of SMC5K30A-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 SMC5K30A-M3/I is usually 5 days.
3.What payment methods are accepted for SMC5K30A-M3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMC5K30A-M3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMC5K30A-M3/I?
SMC5K30A-M3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMC5K30A-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 SMC5K30A-M3/I?
For technical support, including SMC5K30A-M3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMC5K30A-M3/I requirements.
6.How does Aetrix verify that SMC5K30A-M3/I is sourced from the original manufacturer or authorized distributors?
All SMC5K30A-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 SMC5K30A-M3/I meets industry standards.
7.What is the process for return or replacement of SMC5K30A-M3/I?
All SMC5K30A-M3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMC5K30A-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 SMC5K30A-M3/I part is unused and in its original packaging.
Return procedure for SMC5K30A-M3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMC5K30A-M3/I Tags
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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