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Vishay General Semiconductor - Diodes Division SMC3K30CAHM3/57
- Part No.:
- SMC3K30CAHM3/57
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMC3K30CAHM3/57.pdf
- Description:
- TVS DIODE 30VWM 48.4VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:1,259
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Product details
Overview
SMC3K30CAHM3/57 from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, rated for 3000 W peak pulse power (10/1000 μs), 33.3–36.8 V breakdown voltage, and 48.4 V maximum clamping voltage at 62.0 A peak surge current. It is AEC-Q101 qualified and designed for automotive-grade transient protection on power rails and signal lines.
For engineers reviewing the SMC3K30CAHM3/57 datasheet, SMC3K30CAHM3/57 pinout, SMC3K30CAHM3/57 application, or SMC3K30CAHM3/57 equivalent, key selection criteria include its bidirectional polarity, 30 V standoff voltage, 150 °C max junction temperature, UL 497B recognition, and halogen-free RoHS-compliant HM3 construction.
Technical Context
This TVS diode operates as a voltage-clamping device that enters avalanche conduction when transient voltage exceeds its breakdown threshold (VBR = 33.3–36.8 V), limiting downstream voltage to ≤48.4 V at 62.0 A. Its low incremental surge resistance ensures stable clamping under high-current transients.
Designed for automotive environments, it meets AEC-Q101 stress testing requirements and J-STD-020 MSL Level 1 moisture sensitivity, with matte tin-plated leads solderable per JESD 22-B102 and J-STD-002. It is not recommended for PCB bottom-side wave mounting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 3000 W (10/1000 μs waveform) - sustains high-energy transients without failure |
| Breakdown Voltage VBR | 33.3–36.8 V at 1.0 mA - defines precise avalanche onset for reliable triggering |
| Standoff Voltage VWM | 30 V - maximum continuous reverse voltage before leakage exceeds 2.0 μA |
| Clamping Voltage VC | 48.4 V at 62.0 A IPPM - limits protected circuit voltage during worst-case surge |
| Junction Temperature Range | −55 °C to +150 °C - supports operation in under-hood automotive and industrial environments |
| Package | SMC (DO-214AB) - industry-standard 2-pin surface-mount outline with 8.0 mm × 8.0 mm copper pad area |
| Qualification | AEC-Q101 qualified - validated for automotive reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
SMC3K30CAHM3/57 uses the standard SMC (DO-214AB) package: a 2-terminal, unidirectional-outline-compatible but bidirectional-function device with no polarity marking. Terminals are matte tin-plated leads suitable for reflow and wave soldering per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (marked end) | Transient current sink node | Connected to ground or low-impedance return path; carries full IPPM during clamping |
| Anode | Transient current source node | Connected to protected line (e.g., 12 V rail or CAN bus); voltage referenced to cathode |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional polarity | Protects AC-coupled or floating lines (e.g., differential buses) without polarity dependency |
| 3000 W peak pulse rating | Withstands ISO 7637-2 Pulse 1, 2a, 3a/b, and IEC 61000-4-5 surge events in automotive ECUs |
| AEC-Q101 qualification | Validated for automotive use including HTGB, TCT, and UHAST - enables drop-in use in Tier 1 designs |
| UL 497B recognition (E136766) | Meets safety standards for telecom and industrial interface protection without additional certification overhead |
| Halogen-free, RoHS-compliant HM3 suffix | Complies with automotive material compliance requirements (JESD201 Class 2 whisker resistance) |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protects 12 V supply inputs of BCM microcontrollers against load dump and inductive switching spikes. IC Role / Device Role / Timing Role: Voltage-clamping TVS placed between VIN and GND, responding within <1 ns to limit voltage to safe levels. Use Value: Prevents latch-up or permanent damage to MCU power pins during 12 V system transients up to 3000 W. |
Use Scenario: Shields 24 V digital input channels of programmable logic controllers from field-wiring surges and ESD. IC Role / Device Role / Timing Role: Bidirectional clamping device across input terminals, absorbing both positive and negative transients. Use Value: Enables robust 24 V DC input stage design compliant with IEC 61000-4-4 (EFT) and IEC 61000-4-5 (surge). |
| Automotive Camera Module Power Rail | Telecom Base Station Sensor Interface |
Use Scenario: Guards 5 V or 3.3 V power rails feeding image sensors and SerDes ICs in ADAS camera modules. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF) TVS placed directly at connector entry point to suppress fast-rising transients. Use Value: Maintains signal integrity and prevents reset or corruption in high-speed imaging paths during EMC testing. |
Use Scenario: Protects RS-485/RS-422 differential data lines connected to environmental sensors in outdoor telecom cabinets. IC Role / Device Role / Timing Role: Bidirectional TVS pair (one per line) referenced to common-mode ground, clamping common-mode surges. Use Value: Ensures uninterrupted sensor data transmission during lightning-induced surges on long cable runs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMC3K30CAHM3_A/57 | Same electrical specs; updated suffix denotes enhanced traceability and updated internal test flow per Vishay revision control | No functional difference; identical AEC-Q101 qualification and packaging | Select for new designs requiring latest revision compliance and extended lifecycle support |
| SMAJ30CA | Lower peak power (400 W), smaller SMA package, same VWM/VC ratings | Not suitable for ISO 7637-2 Pulse 5a (load dump); limited to lower-energy transients | Use only where space constraints prohibit SMC and surge energy remains below 400 W |
Compared with SMC3K30CAHM3/57, SMC3K30CAHM3_A/57 offers identical performance with improved manufacturing traceability, while SMAJ30CA provides footprint reduction at the cost of 87% lower surge handling capability - making it unsuitable for automotive load-dump protection.
Availability
SMC3K30CAHM3/57 is available at Aetrix Electronics and suitable for automotive electronics, industrial PLCs, and telecom infrastructure requiring stable component supply, AEC-Q101 qualification, and high-energy transient immunity.
Supply support for SMC3K30CAHM3/57 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, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and automotive-grade validation.
The SMC3KxxCAHM3 series belongs to Vishay's TRANSZORB® TVS family, engineered specifically for high-power transient suppression in harsh automotive and industrial environments where robustness and repeatable clamping performance are critical.
FAQ
What does the "HM3" suffix mean in SMC3K30CAHM3/57?
The HM3 suffix in SMC3K30CAHM3/57 indicates halogen-free, RoHS-compliant construction with AEC-Q101 qualification and JESD 201 Class 2 whisker resistance. It distinguishes this automotive-grade variant from commercial-grade M3 versions and confirms compliance with automotive material and reliability standards.
Is SMC3K30CAHM3/57 suitable for protecting CAN bus lines?
Yes, SMC3K30CAHM3/57 is suitable for CAN bus protection when used differentially across CAN_H and CAN_L with appropriate common-mode grounding. Its bidirectional operation, 30 V standoff, and 48.4 V clamping align with ISO 11898-2 requirements for physical layer surge immunity, provided layout minimizes parasitic inductance.
What is the maximum operating temperature for SMC3K30CAHM3/57?
The maximum operating junction temperature for SMC3K30CAHM3/57 is +150 °C, with storage temperature ranging from −55 °C to +150 °C. Derating applies above 25 °C ambient; full 3000 W pulse power is specified only at TA = 25 °C per Figure 2 in Document 89433.
Does SMC3K30CAHM3/57 have polarity markings on the package?
No, SMC3K30CAHM3/57 has no polarity markings because it is a bidirectional TVS diode. The SMC (DO-214AB) package is symmetric; either terminal may serve as anode or cathode depending on transient polarity - no orientation-dependent installation is required.
How does SMC3K30CAHM3/57 differ from SMC3K30CA-M3/57?
SMC3K30CAHM3/57 includes AEC-Q101 qualification, JESD 201 Class 2 whisker resistance, and automotive-grade process controls, whereas SMC3K30CA-M3/57 is commercial-grade with identical electrical specs but no automotive qualification. Both share the same SMC package, 30 V standoff, and 48.4 V clamping voltage.
SMC3K30CAHM3/57 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):
- 62A
- Power - Peak Pulse:
- 3000W (3kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SMC3K30CAHM3/57 FAQ
1.How can I place an order for SMC3K30CAHM3/57 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMC3K30CAHM3/57 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 SMC3K30CAHM3/57 reliable?
The price and inventory of SMC3K30CAHM3/57 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMC3K30CAHM3/57 is usually 5 days.
3.What payment methods are accepted for SMC3K30CAHM3/57?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMC3K30CAHM3/57 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMC3K30CAHM3/57?
SMC3K30CAHM3/57 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMC3K30CAHM3/57 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 SMC3K30CAHM3/57?
For technical support, including SMC3K30CAHM3/57 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMC3K30CAHM3/57 requirements.
6.How does Aetrix verify that SMC3K30CAHM3/57 is sourced from the original manufacturer or authorized distributors?
All SMC3K30CAHM3/57 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 SMC3K30CAHM3/57 meets industry standards.
7.What is the process for return or replacement of SMC3K30CAHM3/57?
All SMC3K30CAHM3/57 units undergo pre-shipment inspection (PSI). If there is an issue with SMC3K30CAHM3/57, 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 SMC3K30CAHM3/57 part is unused and in its original packaging.
Return procedure for SMC3K30CAHM3/57:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMC3K30CAHM3/57 Tags
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Diodes Incorporated
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