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Vishay General Semiconductor - Diodes Division SMCJ64AHM3_A/I
- Part No.:
- SMCJ64AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ64AHM3_A/I.pdf
- Description:
- TVS DIODE 64VWM 103VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,279
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Product details
Overview
SMCJ64AHM3_A/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) in SMC (DO-214AB) package, with 64 V standoff voltage (VWM), 71.1–78.6 V breakdown voltage (VBR at 1 mA), 1500 W peak pulse power (10/1000 µs), and 14.6 A peak pulse current (IPPM). It protects MOSFETs, ICs, and sensor signal lines against inductive switching transients and ESD in automotive power systems.
For engineers reviewing the SMCJ64AHM3_A/I datasheet, SMCJ64AHM3_A/I pinout, SMCJ64AHM3_A/I application, or SMCJ64AHM3_A/I equivalent, key selection criteria include clamping voltage (103 V at IPPM), low incremental surge resistance, AEC-Q101 qualification, halogen-free RoHS compliance, and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
This TVS diode operates as a unidirectional clamping device: reverse-biased during normal operation, it remains high-impedance until VWM = 64 V is exceeded, then avalanches to clamp transients at ≤103 V. Its glass-passivated junction ensures stable breakdown and fast response (<1 ns), while the SMC package supports 200 A non-repetitive forward surge (IFSM) per 8.3 ms half-sine wave.
Thermal performance is defined by RθJA = 75 °C/W (on recommended pad layout) and RθJL = 15 °C/W, enabling reliable operation up to TJ = 150 °C. The HM3 suffix confirms halogen-free, RoHS-compliant construction and AEC-Q101 qualification for automotive-grade reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 64 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 71.1 V / 78.6 V at 1 mA - Ensures consistent avalanche initiation across production lots |
| VC @ IPPM | 103 V - Clamped voltage under 14.6 A 10/1000 µs surge, limiting stress on downstream ICs |
| PPPM | 1500 W - Peak transient energy handling capability for automotive load-dump and ISO 7637-2 pulses |
| IPPM | 14.6 A - Surge current capacity derived from 1500 W / 103 V, validated on 8 mm × 8 mm copper pads |
| TJ max | 150 °C - Junction temperature limit supporting under-hood automotive environments |
| Package | SMC (DO-214AB) - Standardized 2-pin surface-mount outline with cathode band marking |
Pinout & Package
SMCJ64AHM3_A/I uses the industry-standard SMC (DO-214AB) package: a rectangular, surface-mount plastic case measuring 7.11 mm × 6.22 mm × 2.62 mm, with matte tin-plated leads solderable per J-STD-002. Polarity is marked by a cathode band on the body end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or low-voltage rail; defines clamping reference point for unidirectional operation |
| Cathode | High-side surge input terminal | Connected to protected line (e.g., 12 V supply or sensor output); avalanche conduction occurs from cathode to anode |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics per stress test requirements |
| Halogen-free & RoHS-compliant (HM3) | Meets automotive environmental standards and enables use in green manufacturing without compromising surge robustness |
| 1500 W peak pulse power | Withstands ISO 7637-2 Pulse 5a (load dump) and IEC 61000-4-5 surges without degradation |
| Fast response time < 1 ns | Clamps transients before sensitive logic or analog circuitry sustains damage |
| Low clamping ratio (VC/VBR ≈ 1.31) | Minimizes overvoltage margin between breakdown and clamping, improving protection efficiency |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load-dump transients (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to shunt surge current away from regulator ICs and microcontrollers. Use Value: Clamps 1500 W surges at 103 V, preventing latch-up or gate oxide rupture in downstream PMICs and MCUs. | Use Scenario: Shielding analog outputs of pressure or temperature sensors in factory automation PLC modules from ESD and cable-induced transients. IC Role / Device Role / Timing Role: Low-capacitance TVS connected between sensor output and ground to suppress ±8 kV contact ESD (IEC 61000-4-2) without distorting mV-level signals. Use Value: 14.6 A IPPM and 103 V VC ensure signal integrity is preserved while meeting industrial immunity standards. |
| DC Motor Drive Circuit Protection | Telecom Power Interface Protection |
Use Scenario: Safeguarding H-bridge MOSFET gates and driver ICs from inductive kickback during motor commutation in automotive seat/mirror actuators. IC Role / Device Role / Timing Role: TVS mounted at motor terminals and gate drive lines to clamp flyback voltages before they propagate into logic-level control circuitry. Use Value: 200 A IFSM rating handles repetitive turn-off spikes; 75 °C/W RθJA allows thermal stability in enclosed actuator housings. | Use Scenario: Guarding 48 V PoE-powered telecom equipment front-ends against lightning-induced surges on DC input lines. IC Role / Device Role / Timing Role: Primary-stage TVS on input bus to absorb bulk surge energy before secondary-stage filtering and regulation. Use Value: 1500 W PPPM and DO-214AB mechanical robustness meet GR-1089-CORE Level 3 surge requirements for central office equipment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ64AHE3_A/I | Lower PPPM (400 W), smaller SMA package (DO-214AC), same VWM/VBR range | Not suitable for automotive load-dump; limited to low-energy ESD and signal-line protection | Select when board space is constrained and surge energy is ≤400 W |
| SMCJ64AHE3_A/I | Same SMC package and electrical specs, but standard RoHS (E3) not halogen-free; lacks AEC-Q101 qualification | Acceptable for commercial/industrial use but not automotive OEM designs requiring AEC-Q101 traceability | Select for cost-sensitive non-automotive applications where halogen-free is not mandated |
Compared with SMCJ64AHM3_A/I, SMAJ64AHE3_A/I offers reduced surge handling in a smaller footprint, while SMCJ64AHE3_A/I matches mechanical and electrical performance but omits halogen-free materials and AEC-Q101 validation-making SMCJ64AHM3_A/I the only choice for AEC-compliant, environmentally restricted automotive deployments.
Availability
SMCJ64AHM3_A/I is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, DC motor drive circuits, and telecom power input stages requiring stable component supply and long-term lifecycle support.
Supply support for SMCJ64AHM3_A/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, TVS devices, and optoelectronics with emphasis on reliability, precision, and application-specific optimization.
The SMCJ series is engineered for high-energy transient suppression in harsh environments-specifically targeting automotive, industrial, and telecom systems where robustness against load dump, ESD, and lightning surges is mission-critical.
FAQ
What is the clamping voltage of the SMCJ64AHM3_A/I under maximum rated surge conditions?
The SMCJ64AHM3_A/I has a maximum clamping voltage (VC) of 103 V when subjected to its rated 14.6 A peak pulse current (IPPM) using the standardized 10/1000 µs waveform. This value is measured with the device mounted on 8.0 mm × 8.0 mm copper pads per JEDEC guidelines and represents the upper bound of voltage seen by protected circuitry during worst-case transients. The SMCJ64AHM3_A/I maintains this clamping performance across its full operating temperature range.
Is the SMCJ64AHM3_A/I suitable for automotive applications?
Yes, the SMCJ64AHM3_A/I is explicitly qualified to AEC-Q101 for automotive use. Its halogen-free (HM3) construction, 1500 W surge rating, 150 °C maximum junction temperature, and validation across temperature cycling, humidity, and mechanical shock tests make it appropriate for engine control modules, body electronics, and ADAS power supplies. The SMCJ64AHM3_A/I meets ISO 7637-2 Pulse 5a requirements when properly laid out with adequate copper area.
How does the SMCJ64AHM3_A/I differ from the SMCJ64AHE3_A/I variant?
The SMCJ64AHM3_A/I and SMCJ64AHE3_A/I share identical electrical specifications and SMC (DO-214AB) packaging, but differ in material compliance and qualification: SMCJ64AHM3_A/I is halogen-free and AEC-Q101 qualified, whereas SMCJ64AHE3_A/I is RoHS-compliant (E3) without halogen restrictions and lacks AEC-Q101 validation. Both are unidirectional, but only the SMCJ64AHM3_A/I satisfies Tier 1 automotive OEM requirements for material content and reliability testing.
What is the thermal resistance of the SMCJ64AHM3_A/I, and how does it affect PCB layout?
The SMCJ64AHM3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on the minimum recommended 8.0 mm × 8.0 mm copper pads per terminal. This value assumes no additional heatsinking; reducing copper area increases thermal impedance and risks exceeding the 150 °C maximum junction temperature during repeated surges. For high-duty-cycle applications, designers should verify thermal performance using the device's RθJL = 15 °C/W and consider internal layer copper pours to enhance heat dissipation.
Does the SMCJ64AHM3_A/I have polarity marking, and how is it oriented on the PCB?
Yes, the SMCJ64AHM3_A/I features a visible cathode band on the body, indicating the cathode terminal. During PCB layout, the cathode must be connected to the line being protected (e.g., 12 V rail or signal trace), while the anode connects to ground or the return path. Incorrect orientation renders the device ineffective for unidirectional surge suppression, as it will not avalanche in the forward direction. The SMCJ64AHM3_A/I's polarity marking aligns with standard SMC (DO-214AB) footprint conventions used in CAD libraries.
SMCJ64AHM3_A/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):
- 64V
- Voltage - Breakdown (Min):
- 71.1V
- Voltage - Clamping (Max) @ Ipp:
- 103V
- Current - Peak Pulse (10/1000µs):
- 14.6A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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)
SMCJ64AHM3_A/I FAQ
1.How can I place an order for SMCJ64AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ64AHM3_A/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 SMCJ64AHM3_A/I reliable?
The price and inventory of SMCJ64AHM3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ64AHM3_A/I is usually 5 days.
3.What payment methods are accepted for SMCJ64AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ64AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ64AHM3_A/I?
SMCJ64AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ64AHM3_A/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 SMCJ64AHM3_A/I?
For technical support, including SMCJ64AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ64AHM3_A/I requirements.
6.How does Aetrix verify that SMCJ64AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SMCJ64AHM3_A/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 SMCJ64AHM3_A/I meets industry standards.
7.What is the process for return or replacement of SMCJ64AHM3_A/I?
All SMCJ64AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ64AHM3_A/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 SMCJ64AHM3_A/I part is unused and in its original packaging.
Return procedure for SMCJ64AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ64AHM3_A/I Tags
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