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Vishay General Semiconductor - Diodes Division SMCJ64CAHM3_A/H
- Part No.:
- SMCJ64CAHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ64CAHM3_A/H.pdf
- Description:
- TVS DIODE 64VWM 103VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,524
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Product details
Overview
SMCJ64CAHM3_A/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for clamping voltage transients on power and signal lines. It features a 64 V standoff voltage (VWM), 103 V maximum clamping voltage (VC) at 14.6 A peak pulse current (IPPM), and 1500 W peak pulse power (10/1000 µs waveform), suitable for automotive-grade overvoltage protection in DC power rails and sensor interfaces.
For engineers reviewing the SMCJ64CAHM3_A/H datasheet, SMCJ64CAHM3_A/H pinout, SMCJ64CAHM3_A/H application, or SMCJ64CAHM3_A/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, halogen-free RoHS compliance, and thermal resistance (RθJA = 75 °C/W) for board-level surge immunity design in harsh environments.
Technical Context
This device operates as a voltage-clamping protector with symmetrical breakdown behavior in both directions due to its bidirectional construction. Its glass-passivated junction ensures stable avalanche characteristics, low incremental surge resistance, and fast response time (<1 ns) to transient events such as ESD, load dump, and inductive switching spikes.
The SMCJ64CAHM3_A/H is rated for -55 °C to +150 °C operating junction temperature and meets MSL level 1 per J-STD-020 with 260 °C reflow peak. Its 1500 W peak pulse power rating applies under standardized 10/1000 µs waveform conditions with derating above 25 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 64 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating range for protected circuit. |
| VBR min/max | 71.1 V / 78.6 V at IT = 1 mA - Confirmed breakdown threshold range ensuring reliable turn-on during transients. |
| VC | 103 V at IPPM = 14.6 A - Clamped voltage seen by downstream circuitry during full-rated 1500 W surge event. |
| PPPM | 1500 W - Peak pulse power handling capacity under 10/1000 µs waveform; determines survivability against high-energy surges. |
| RθJA | 75 °C/W - Junction-to-ambient thermal resistance; informs PCB copper pad sizing and layout for thermal management. |
| TJ max | +150 °C - Maximum allowable junction temperature; sets upper limit for thermal design margin in sealed enclosures. |
| AEC-Q101 | Qualified - Validated for automotive electronic systems requiring robust reliability under temperature cycling, humidity, and vibration stress. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, halogen-free, RoHS-compliant, matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. No polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path (bidirectional) | Acts as cathode during positive transients and anode during negative transients; symmetric conduction enables dual-polarity clamping. |
| Cathode | Transient return path (bidirectional) | Electrically identical to Anode terminal in bidirectional TVS; no functional distinction - both terminals serve as interchangeable surge current paths. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns. |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body electronics, and ADAS modules requiring extended lifetime under thermal and mechanical stress. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving protection margin for sensitive ICs like CAN transceivers or microcontrollers. |
| MSL Level 1 moisture sensitivity | Allows standard SMT reflow without baking, reducing manufacturing complexity and cost in high-volume production. |
| Glass passivated junction | Ensures stable breakdown voltage over time and temperature, critical for long-term reliability in industrial and automotive deployments. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs from load dump and jump-start transients per ISO 7637-2. IC Role / Device Role / Timing Role: Primary clamping element placed at power entry point to limit bus voltage excursion below 103 V. Use Value: Prevents latch-up or permanent damage to downstream regulators and microcontrollers during 1500 W surge events. | Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) connected to ADC inputs in factory automation PLCs. IC Role / Device Role / Timing Role: Bidirectional shunt protector on differential or single-ended signal lines exposed to ESD and cable discharge events. Use Value: Maintains signal integrity by clamping transients within ±103 V while adding <1 pF junction capacitance at zero bias. |
| Telecom DC Power Input Protection | Consumer Device USB Port Protection |
Use Scenario: Securing 48 V DC input of PoE-powered network switches against lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: First-stage TVS on primary DC input rail upstream of DC/DC converters. Use Value: Absorbs up to 1500 W energy without degradation, enabling compliance with IEC 61000-4-5 Level 4 requirements. | Use Scenario: Hardening USB 2.0 data lines and VBUS against ESD per IEC 61000-4-2 ±15 kV contact discharge. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed adjacent to connector to minimize stub length. Use Value: Limits transient voltage to <103 V within <1 ns, preventing data corruption and PHY damage without signal attenuation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ64CAHE3_A/H | Lower PPPM = 400 W; same VWM/VC; SMA package (smaller footprint, higher RθJA). | Suitable for space-constrained consumer designs where surge energy is limited to <400 W. | Select when board area is critical and surge threat level is lower than automotive or industrial standards. |
| SMCJ64AHE3_A/H | Unidirectional version; same VWM, VC, PPPM; requires correct polarity placement. | Applicable only in DC circuits with known polarity, e.g., regulated 5 V or 3.3 V supply rails. | Choose only if system ground reference is fixed and reverse-voltage risk is absent. |
Compared with SMCJ64CAHM3_A/H, SMAJ64CAHE3_A/H offers reduced surge capacity in a smaller package, while SMCJ64AHE3_A/H provides identical clamping performance but demands strict polarity alignment-making the original bidirectional, AEC-Q101-qualified, halogen-free SMCJ64CAHM3_A/H optimal for robust, polarity-agnostic automotive and industrial use.
Availability
SMCJ64CAHM3_A/H is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor systems, telecom power supplies, and consumer USB interface protection requiring stable component supply across multi-year production cycles.
Supply support for SMCJ64CAHM3_A/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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMCJ series was developed for high-energy transient suppression in demanding environments including automotive, industrial, and telecom infrastructure, prioritizing AEC-Q101 qualification, low clamping voltage, and consistent surge endurance.
FAQ
What is the clamping voltage of SMCJ64CAHM3_A/H at its rated peak pulse current?
The SMCJ64CAHM3_A/H has a maximum clamping voltage (VC) of 103 V at its rated peak pulse current (IPPM) of 14.6 A under the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and defines the highest voltage imposed on protected circuitry during a full 1500 W surge event. The SMCJ64CAHM3_A/H maintains this clamping performance across its qualified operating temperature range.
Is SMCJ64CAHM3_A/H suitable for automotive applications?
Yes, SMCJ64CAHM3_A/H is AEC-Q101 qualified and specifically designed for automotive use. Its halogen-free, RoHS-compliant construction, MSL Level 1 rating, and operation from -55 °C to +150 °C make it appropriate for engine control units, body electronics, infotainment power rails, and ADAS sensor interfaces. The SMCJ64CAHM3_A/H meets stringent reliability requirements for vibration, thermal cycling, and long-term stability in vehicle platforms.
How does the bidirectional configuration of SMCJ64CAHM3_A/H affect its circuit implementation?
The bidirectional configuration of SMCJ64CAHM3_A/H eliminates polarity dependency, allowing direct placement across any two nodes subject to differential transients-such as AC signal lines, isolated power rails, or floating sensor outputs. Unlike unidirectional TVS diodes, the SMCJ64CAHM3_A/H requires no orientation check during assembly and provides symmetrical clamping in both voltage polarities, simplifying layout and reducing BOM count in mixed-signal systems.
What is the thermal resistance of SMCJ64CAHM3_A/H, and how does it impact PCB layout?
The SMCJ64CAHM3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on minimum recommended copper pads (0.31" x 0.31", 8.0 mm x 8.0 mm per terminal). To maintain safe junction temperatures during repeated surges, PCB layout must provide adequate copper area and thermal vias. Reducing RθJA through enhanced heatsinking directly improves the SMCJ64CAHM3_A/H's ability to handle multiple transient events without thermal runaway.
Does SMCJ64CAHM3_A/H have a specified junction capacitance, and is it suitable for high-speed data lines?
The SMCJ64CAHM3_A/H does not specify junction capacitance in its primary datasheet; however, typical values for the SMCJ family at zero bias and 1 MHz are below 100 pF - significantly higher than dedicated high-speed ESD protectors. While effective for power rail and low-frequency signal protection, the SMCJ64CAHM3_A/H is not recommended for USB 3.0, HDMI, or MIPI lines. For such applications, lower-capacitance alternatives should be selected, whereas the SMCJ64CAHM3_A/H remains ideal for DC power and sub-MHz analog signals.
SMCJ64CAHM3_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):
- 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)
SMCJ64CAHM3_A/H FAQ
1.How can I place an order for SMCJ64CAHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ64CAHM3_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 SMCJ64CAHM3_A/H reliable?
The price and inventory of SMCJ64CAHM3_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 SMCJ64CAHM3_A/H is usually 5 days.
3.What payment methods are accepted for SMCJ64CAHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ64CAHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ64CAHM3_A/H?
SMCJ64CAHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ64CAHM3_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 SMCJ64CAHM3_A/H?
For technical support, including SMCJ64CAHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ64CAHM3_A/H requirements.
6.How does Aetrix verify that SMCJ64CAHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SMCJ64CAHM3_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 SMCJ64CAHM3_A/H meets industry standards.
7.What is the process for return or replacement of SMCJ64CAHM3_A/H?
All SMCJ64CAHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ64CAHM3_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 SMCJ64CAHM3_A/H part is unused and in its original packaging.
Return procedure for SMCJ64CAHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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