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Vishay General Semiconductor - Diodes Division SMC5K30A-M3/H
- Part No.:
- SMC5K30A-M3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMC5K30A-M3/H.pdf
- Description:
- TVS DIODE 30VWM 48.4VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:307
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Product details
Overview
SMC5K30A-M3/H from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for robust overvoltage protection of power rails 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 10/1000 μs waveform, 5000 W peak pulse power, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SMC5K30A-M3/H datasheet, SMC5K30A-M3/H pinout, SMC5K30A-M3/H application, or SMC5K30A-M3/H equivalent, this device is selected for high-energy surge suppression in DC power inputs, MOSFET gate protection, sensor interface lines, and automotive body electronics where fast response (<1 ns), low clamping ratio, and MSL Level 1 reflow compatibility are critical.
Technical Context
The SMC5K30A-M3/H operates as a unidirectional avalanche diode with precise VBR = 33.3–36.8 V at 1.0 mA test current and clamps transients to ≤48.4 V at 103 A (10/1000 μs). Its low incremental surge resistance ensures minimal voltage overshoot during high-current surges, while its 150 °C max junction temperature supports operation in under-hood automotive environments.
It meets IEC 61000-4-2 ESD immunity up to ±30 kV (contact/air), complies with UL 497B (E136766), and uses halogen-free, RoHS-compliant molding compound. The SMC (DO-214AB) package provides 90 °C/W junction-to-ambient thermal resistance and supports JEDEC J-STD-020 reflow up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 33.3 V / 36.8 V at 1.0 mA - defines precise avalanche initiation threshold for predictable clamping onset |
| VWM | 30 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 μA |
| VC @ IPPM (10/1000 μs) | 48.4 V at 103 A - limits protected circuit voltage during worst-case surge, enabling 3.3 V/5 V/12 V rail safety margins |
| PPPM | 5000 W (10/1000 μs) - sustains high-energy transients from load dump or inductive switching without failure |
| TJ max | +150 °C - enables use in engine control units, powertrain modules, and industrial motor drives with elevated ambient temps |
| ESD Rating | ±30 kV HBM (IEC 61000-4-2) - protects against human-body and air-gap electrostatic discharge events |
| Package | SMC (DO-214AB) - surface-mount footprint compatible with automated assembly and provides 2.0 mm creepage/clearance |
Pinout & Package
SMC5K30A-M3/H is housed in the industry-standard SMC (DO-214AB) plastic package with matte tin-plated leads. Cathode is marked by a color band on the body; anode is the unmarked end. Leads comply with J-STD-002 and JESD 22-B102 solderability standards and pass JESD 201 Class 2 whisker testing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Surge current sink | Connected to protected line (e.g., +12 V rail); conducts avalanche current to ground during overvoltage |
| Anode (unbanded end) | Reference node | Typically connected to system ground or low-impedance return path; completes clamping loop during transient |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional clamping | Protects positive-going transients only; avoids interference with negative signal swings or AC-coupled circuits |
| 48.4 V clamping at 103 A | Ensures downstream 3.3 V/5 V logic ICs and MOSFET gates remain below absolute maximum ratings during ISO 7637-2 Pulse 1/2a/5a events |
| AEC-Q101 qualified | Validated for automotive applications including body control modules, lighting drivers, and infotainment power supplies |
| MSL Level 1, 260 °C peak | Enables single-pass lead-free reflow without moisture-induced damage or delamination |
| UL 497B recognized (E136766) | Meets safety requirements for secondary-circuit surge protection in industrial and telecom equipment |
Applications
| Automotive Power Input Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump (ISO 16750-2) and alternator ripple. IC Role / Device Role / Timing Role: Primary TVS clamp on main power rail upstream of DC/DC converter input. Use Value: Limits voltage to ≤48.4 V during 100 V/400 ms load dump events, preventing regulator latch-up or capacitor overvoltage failure. |
Use Scenario: Shielding analog output lines of pressure/temperature sensors from EFT bursts (IEC 61000-4-4). IC Role / Device Role / Timing Role: Low-capacitance (≈100 pF) shunt protector on 4–20 mA or 0–10 V sensor outputs. Use Value: Clamps 4 kV EFT pulses within <1 ns while adding <0.5 % gain error due to sub-1 μA leakage at 30 V. |
| MOSFET Gate Protection | Telecom DC Power Feeds |
Use Scenario: Preventing gate oxide rupture in high-side N-channel MOSFETs driven by microcontrollers. IC Role / Device Role / Timing Role: Bidirectional protection not required; unidirectional SMC5K30A-M3/H placed between gate and source. Use Value: Clamps inductive turn-off spikes to ≤48.4 V, keeping gate-source voltage safely below ±20 V rating of common logic-level MOSFETs. |
Use Scenario: Safeguarding PoE-powered devices (IEEE 802.3af/at) against lightning-induced surges on 48 V DC feeds. IC Role / Device Role / Timing Role: First-stage shunt suppressor on PSE side, coordinated with GDT or MOV upstream. Use Value: Handles 5000 W 10/1000 μs surges while maintaining <1.0 μA leakage at 48 V nominal, minimizing standby power loss. |
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-M3/84A | Lower PPPM (400 W vs. 5000 W); SMA package (smaller footprint, higher RthJA = 150 °C/W) | Suitable for low-energy signal-line protection only; insufficient for power rail or load-dump duty | Select SMC5K30A-M3/H when protecting >12 V power inputs or automotive systems requiring AEC-Q101 and 5 kW surge handling. |
| SMCJ30AHE3/57T | Same SMC package and VWM/VC, but not AEC-Q101 qualified; RoHS-compliant but halogen-containing | Lacks automotive qualification; used in industrial/commercial power supplies where AEC-Q101 is not mandated | Choose SMC5K30A-M3/H over SMCJ30AHE3/57T when automotive compliance, halogen-free construction, or UL recognition is required. |
Compared with SMAJ30A-M3/84A and SMCJ30AHE3/57T, the SMC5K30A-M3/H delivers 12.5× higher peak pulse power in the same SMC footprint, includes AEC-Q101 validation and UL 497B listing, and guarantees halogen-free materials-making it the sole choice for automotive front-end protection and high-reliability industrial power entry designs.
Availability
SMC5K30A-M3/H is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, telecom power feeds, and MOSFET gate protection circuits requiring stable component supply across extended production lifecycles.
Supply support for SMC5K30A-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 reliability, efficiency, and application-specific performance.
The SMC5K30A-M3/H belongs to Vishay's TRANSZORB® family of high-power TVS diodes, engineered specifically for automotive and industrial surge immunity where high energy absorption, fast response, and long-term stability under thermal stress are mandatory.
FAQ
What is the breakdown voltage tolerance of the SMC5K30A-M3/H?
The SMC5K30A-M3/H has a specified breakdown voltage range of 33.3 V to 36.8 V at 1.0 mA test current, per the Vishay datasheet document 87742. This ±5.3% tolerance ensures consistent clamping behavior across production lots and supports reliable design margining for 30 V nominal systems. The SMC5K30A-M3/H maintains this specification across its full operating temperature range of –55 °C to +150 °C.
Is the SMC5K30A-M3/H suitable for bidirectional transient protection?
No, the SMC5K30A-M3/H is a unidirectional TVS diode and only clamps positive-going transients relative to its cathode terminal. It must be oriented with cathode toward the protected line and anode to ground. For bidirectional protection (e.g., AC lines or data buses), a separate device such as the SMBJ30CA or a dual-diode array is required. The SMC5K30A-M3/H datasheet explicitly states "Unidirectional" in its FEATURES section.
Does the SMC5K30A-M3/H meet automotive qualification standards?
Yes, the SMC5K30A-M3/H is AEC-Q101 qualified, as confirmed in the Vishay datasheet revision 09-Jan-2024 (document 87742), section "FEATURES". This qualification covers stress tests including HTGB, AC/DC life test, temperature cycling, and mechanical shock-validating suitability for automotive under-hood and cabin applications. Note that AEC-Q101 applies to the HM3 suffix variants; the M3/H suffix indicates halogen-free, RoHS-compliant construction with full automotive qualification.
What is the maximum clamping voltage of the SMC5K30A-M3/H under 8/20 μs surge conditions?
The SMC5K30A-M3/H has a maximum clamping voltage of 64.0 V at 625 A under the 8/20 μs surge waveform, per Table "ELECTRICAL CHARACTERISTICS" in the Vishay datasheet. This value reflects worst-case clamping during high-current, short-duration transients like lightning-induced surges, and is critical for ensuring protected ICs remain within their absolute maximum voltage ratings. The SMC5K30A-M3/H achieves this with low dynamic impedance and fast avalanche response.
Can the SMC5K30A-M3/H be used in lead-free reflow processes?
Yes, the SMC5K30A-M3/H is rated for MSL Level 1 per J-STD-020 and supports peak reflow temperatures up to 260 °C, making it fully compatible with standard lead-free soldering profiles. Its matte tin-plated leads meet J-STD-002 and JESD 22-B102 solderability requirements, and the M3 suffix confirms compliance with JESD 201 Class 2 whisker resistance. No pre-baking is required prior to reflow, simplifying manufacturing for the SMC5K30A-M3/H.
SMC5K30A-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:
- 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/H FAQ
1.How can I place an order for SMC5K30A-M3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMC5K30A-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 SMC5K30A-M3/H reliable?
The price and inventory of SMC5K30A-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 SMC5K30A-M3/H is usually 5 days.
3.What payment methods are accepted for SMC5K30A-M3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMC5K30A-M3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMC5K30A-M3/H?
SMC5K30A-M3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMC5K30A-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 SMC5K30A-M3/H?
For technical support, including SMC5K30A-M3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMC5K30A-M3/H requirements.
6.How does Aetrix verify that SMC5K30A-M3/H is sourced from the original manufacturer or authorized distributors?
All SMC5K30A-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 SMC5K30A-M3/H meets industry standards.
7.What is the process for return or replacement of SMC5K30A-M3/H?
All SMC5K30A-M3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMC5K30A-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 SMC5K30A-M3/H part is unused and in its original packaging.
Return procedure for SMC5K30A-M3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMC5K30A-M3/H Tags
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