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Vishay General Semiconductor - Diodes Division SMC3K64CAHM3_A/H
- Part No.:
- SMC3K64CAHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMC3K64CAHM3_A/H.pdf
- Description:
- 3KW, 64V 5%,BIDIR,SMC TVS
- Quantity:
- Payment:
- Shipping:
Inventory:1,188
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Product details
Overview
SMC3K64CAHM3_A from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) in SMC (DO-214AB) package, designed for high-energy surge protection with 3000 W peak pulse power (10/1000 μs), 103 V clamping voltage at 29.1 A, and 64 V stand-off voltage. It protects automotive power lines, sensor interfaces, and MOSFET gate drivers against ISO 7637-2 and ISO 16750-2 transients.
For engineers reviewing the SMC3K64CAHM3_A datasheet, SMC3K64CAHM3_A pinout, SMC3K64CAHM3_A application, or SMC3K64CAHM3_A equivalent, key selection criteria include clamping voltage vs. peak pulse current trade-off, AEC-Q101 qualification for automotive use, bidirectional polarity, and compatibility with 12 V battery system load dump events per ISO 16750-2 Pulse b.
Technical Context
This TVS diode operates as a voltage-clamping device that enters avalanche breakdown when reverse voltage exceeds its 71.1–78.6 V breakdown range, limiting transient energy to protected circuitry via low incremental surge resistance. Its bidirectional structure enables symmetrical clamping on both polarities without external polarity management.
It delivers 30 kW peak pulse power under 8/20 μs waveform and meets IEC 61000-4-2 ESD immunity up to 30 kV (contact/air), while maintaining thermal stability up to 175 °C junction temperature and complying with J-STD-020 MSL Level 1 reflow profile.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VWM) | 64 V - Maximum continuous reverse operating voltage before significant leakage; defines safe operating margin below clamping threshold. |
| Breakdown Voltage (VBR) | 71.1–78.6 V at 1 mA - Voltage at which avalanche conduction begins; ensures reliable triggering above normal system transients. |
| Clamping Voltage (VC) | 103 V at 29.1 A (10/1000 μs) - Peak voltage seen by protected circuit during worst-case surge; determines stress on downstream components. |
| Peak Pulse Power (PPPM) | 3000 W (10/1000 μs) - Energy-handling capacity for standard automotive surge waveforms; supports robust protection in 12 V systems. |
| Operating Temperature | −55 °C to +175 °C - Full automotive-grade thermal range enabling under-hood deployment without derating. |
| AEC-Q101 Qualified | Yes - Validated for automotive electronic modules per stress test requirements including HTGB, HTRB, and TCT. |
| ESD Rating | 30 kV per IEC 61000-4-2 (contact/air) - Enables direct interface with exposed connectors and sensors in harsh environments. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, halogen-free, RoHS-compliant, matte tin-plated terminals solderable per J-STD-002 and JESD 22-B102. Polarity not marked due to bidirectional construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Anode for negative transients) | Surge current return path during positive clamping | Acts as low-impedance sink for positive overvoltage events; connected to protected line. |
| Anode (Cathode for negative transients) | Surge current return path during negative clamping | Acts as low-impedance sink for negative overvoltage events; connected to ground or reference rail. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns. |
| 30 kW peak pulse rating (8/20 μs) | Supports high-energy lightning-induced surges in telecom and industrial power inputs. |
| Low clamping ratio (VC/VWM = 1.61) | Minimizes voltage overshoot across protected ICs, reducing risk of latch-up or gate oxide damage. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking, simplifying SMT manufacturing. |
| Junction-to-mount thermal resistance (RthJM) | 4.0 °C/W - Enables efficient heat transfer to PCB copper pour, sustaining repeated surge duty cycles. |
Applications
| Automotive Power Line Protection | Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump pulses (ISO 16750-2 Pulse b) and inductive switching spikes. IC Role / Device Role / Timing Role: Voltage-clamping TVS placed between power rail and chassis ground to shunt surge current away from DC/DC converters and microcontrollers. Use Value: Limits peak rail voltage to ≤103 V during 100 ms, 101 V load dump event, preventing overvoltage shutdown or regulator failure. |
Use Scenario: Shielding analog outputs of pressure or temperature sensors from ESD and cable discharge events in ADAS modules. IC Role / Device Role / Timing Role: Bidirectional clamp on differential or single-ended sensor lines to suppress ±30 kV contact ESD without distorting small-signal integrity. Use Value: Maintains sub-1 pF junction capacitance at zero bias, preserving bandwidth and minimizing signal attenuation in 100 kHz sensor channels. |
| MOSFET Gate Driver Protection | Industrial CAN Bus Interface |
|
Use Scenario: Safeguarding high-side/low-side gate drivers in motor control inverters from Miller-induced voltage spikes during fast switching. IC Role / Device Role / Timing Role: Fast-response TVS placed across gate-source terminals to clamp dv/dt-induced transients before they exceed MOSFET VGS(max). Use Value: Sub-nanosecond response time prevents gate oxide breakdown during 50 ns, 100 V transients common in 650 V SiC inverter designs. |
Use Scenario: Adding secondary surge protection on CAN_H/CAN_L lines in factory automation nodes exposed to long cable runs and ground potential differences. IC Role / Device Role / Timing Role: Bidirectional TVS pair (one per line) referenced to common-mode ground to absorb common-mode surges exceeding ISO 11898-2 limits. Use Value: Withstands 3000 W (10/1000 μs) surges while maintaining <1 μA leakage at 64 V, avoiding CAN bus bias current disruption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ64CA | Same VWM (64 V) and bidirectional configuration but lower PPPM (400 W); SMA package (smaller footprint, higher RthJA). | Limited to low-energy transients (e.g., board-level ESD only); unsuitable for ISO 7637-2 Pulse 1 or load dump. | Select SMAJ64CA only for space-constrained consumer electronics where surge energy is <500 W. |
| SMCJ64CA | Identical SMC package and 3000 W rating, but non-AEC-Q101 qualified; slightly higher VC (107 V at 27.6 A). | Acceptable for industrial/commercial power supplies but not certified for automotive OEM production. | Choose SMCJ64CA for cost-sensitive non-automotive designs requiring same mechanical fit and surge rating. |
Compared with SMC3K64CAHM3_A, SMAJ64CA offers smaller size but insufficient energy handling for automotive transients, while SMCJ64CA matches mechanical and electrical specs but lacks AEC-Q101 validation-making SMC3K64CAHM3_A the sole choice for qualified automotive power rail protection.
Availability
SMC3K64CAHM3_A is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface development, and high-reliability power supply protection requiring stable component supply across multi-year production cycles.
Supply support for SMC3K64CAHM3_A 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 high-reliability diodes, rectifiers, and protection devices for demanding industrial and automotive applications.
The SMC3KxxCAHM3_A series was engineered specifically for AEC-Q101-compliant transient suppression in 12 V and 24 V automotive subsystems, emphasizing low clamping ratio, high surge endurance, and process-controlled consistency.
FAQ
What is the maximum clamping voltage of SMC3K64CAHM3_A under a 10/1000 μs surge?
The SMC3K64CAHM3_A clamps to a maximum of 103 V when subjected to a 10/1000 μs waveform at its rated peak pulse current of 29.1 A. This value is specified in the Electrical Characteristics table of the Vishay datasheet (Document Number 98241, Rev. 09-Jan-2024) and represents the upper limit of voltage seen by protected circuitry during standardized surge testing. The SMC3K64CAHM3_A maintains this performance across its full operating temperature range.
Is SMC3K64CAHM3_A qualified for automotive applications?
Yes, the SMC3K64CAHM3_A is AEC-Q101 qualified, as explicitly stated in the Vishay datasheet (Document Number 98241). This qualification covers stress tests including high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), temperature cycling (TCT), and unbiased highly accelerated stress test (UHAST), confirming suitability for automotive powertrain, body, and ADAS modules. The SMC3K64CAHM3_A also meets ISO 7637-2 and ISO 16750-2 immunity requirements.
What does the 'HM3_A' suffix indicate in SMC3K64CAHM3_A?
The 'HM3_A' suffix in SMC3K64CAHM3_A denotes Vishay's halogen-free, RoHS-compliant, and AEC-Q101-qualified variant with matte tin-plated leads meeting J-STD-002 and JESD 22-B102 solderability standards. The 'HM3' portion confirms compliance with JESD 201 Class 2 whisker resistance, while '_A' indicates tape-and-reel packaging per JEDEC standards. This suffix distinguishes it from non-automotive or legacy plating variants.
Can SMC3K64CAHM3_A be used in place of SMCJ64CA?
The SMC3K64CAHM3_A shares identical package (SMC/DO-214AB), stand-off voltage (64 V), and peak pulse power (3000 W) with SMCJ64CA, but adds AEC-Q101 qualification and tighter clamping (103 V vs. 107 V). While electrically interchangeable in many circuits, SMC3K64CAHM3_A is required for automotive production where qualification documentation and traceability are mandatory. The SMC3K64CAHM3_A also features enhanced process controls for long-term reliability in cyclic thermal environments.
What is the thermal resistance from junction to ambient for SMC3K64CAHM3_A?
The junction-to-ambient thermal resistance (RthJA) for SMC3K64CAHM3_A is 90 °C/W, measured per JEDEC 51-2A on a standard FR4 PCB with 2 oz. copper and defined mounting pad layout. This value assumes typical SMT assembly conditions and is critical for calculating steady-state temperature rise during repetitive surge events. For high-duty-cycle applications, the lower junction-to-mount resistance (RthJM = 4.0 °C/W) should be used with thermal vias to internal ground planes to improve heat dissipation. The SMC3K64CAHM3_A's thermal performance supports sustained operation at TJ ≤ 175 °C.
SMC3K64CAHM3_A/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):
- 64V
- Voltage - Breakdown (Min):
- 71.1V
- Voltage - Clamping (Max) @ Ipp:
- 103V
- Current - Peak Pulse (10/1000µs):
- 29.1A
- Power - Peak Pulse:
- 3000W (3kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMC3K64CAHM3_A/H FAQ
1.How can I place an order for SMC3K64CAHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMC3K64CAHM3_A/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 SMC3K64CAHM3_A/H reliable?
The price and inventory of SMC3K64CAHM3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMC3K64CAHM3_A/H is usually 5 days.
3.What payment methods are accepted for SMC3K64CAHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMC3K64CAHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMC3K64CAHM3_A/H?
SMC3K64CAHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMC3K64CAHM3_A/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 SMC3K64CAHM3_A/H?
For technical support, including SMC3K64CAHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMC3K64CAHM3_A/H requirements.
6.How does Aetrix verify that SMC3K64CAHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SMC3K64CAHM3_A/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 SMC3K64CAHM3_A/H meets industry standards.
7.What is the process for return or replacement of SMC3K64CAHM3_A/H?
All SMC3K64CAHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMC3K64CAHM3_A/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 SMC3K64CAHM3_A/H part is unused and in its original packaging.
Return procedure for SMC3K64CAHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMC3K64CAHM3_A/H Tags
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