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Vishay General Semiconductor - Diodes Division SMCJ64HE3/9AT
- Part No.:
- SMCJ64HE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ64HE3/9AT.pdf
- Description:
- TVS DIODE 64VWM 114VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,099
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Product details
Overview
SMCJ64HE3/9AT from Vishay General Semiconductor is a surface-mount transient voltage suppressor (TVS) diode designed for bi-directional overvoltage protection in power and signal lines. It features a 64 V standoff voltage (VWM), 71.1–78.6 V breakdown voltage (VBR), 1500 W peak pulse power (PPPM), and clamps transients to ≤103 V at 14.6 A, making it suitable for automotive power rail and industrial sensor interface protection.
For engineers reviewing the SMCJ64HE3/9AT datasheet, SMCJ64HE3/9AT pinout, SMCJ64HE3/9AT application, or SMCJ64HE3/9AT equivalent, key selection criteria include its AEC-Q101 qualification, DO-214AB (SMCJ) package, low incremental surge resistance, fast response time, and compliance with UL 497B for telecom and automotive surge protection systems.
Technical Context
The SMCJ64HE3/9AT operates as a bi-directional avalanche diode, leveraging silicon junction technology to clamp transient voltages symmetrically in both polarities. Its 10/1000 μs waveform rating of 1500 W and 14.6 A peak pulse current (IPPM) reflects robust energy handling under standardized surge conditions.
Thermally, it supports operation from –55 °C to +150 °C with a junction-to-ambient thermal resistance (RθJA) of 75 °C/W on standard 8.0 mm × 8.0 mm copper pads. The device meets MSL Level 1 per J-STD-020 and passes JESD 201 Class 2 whisker testing due to its HE3 suffix.
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 - Confirmed breakdown range ensures reliable turn-on margin above VWM |
| VC @ IPPM | ≤103 V at 14.6 A - Clamping voltage limits downstream IC stress during 10/1000 μs surges |
| PPPM | 1500 W - Peak pulse power capability for IEC 61000-4-5 Level 4 surge immunity compliance |
| TJ max | +150 °C - Enables use in under-hood automotive environments without derating |
| Qualification | AEC-Q101 qualified - Validated for automotive-grade reliability and lifetime performance |
| Package | DO-214AB (SMCJ) - Standardized surface-mount outline with 0.320" body length and J-bend leads |
Pinout & Package
SMCJ64HE3/9AT uses the DO-214AB (SMCJ) package: a surface-mount, bi-directional TVS diode with two terminals in a J-bend lead configuration. No polarity marking is present, consistent with bi-directional functionality.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (unmarked) | Bi-directional avalanche junction | Both terminals function identically - no cathode band; symmetrical clamping in either polarity |
| Lead 1 / Lead 2 | Mounting interface | Matte tin-plated, solderable per J-STD-002; supports automated placement and reflow |
Key Features
| Feature | Design Value |
|---|---|
| Bi-directional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| AEC-Q101 qualification | Validates reliability for automotive power distribution modules, battery management, and ADAS sensor interfaces |
| UL 497B recognition (QVGQ2) | Confirms suitability for telecom and industrial data line protection meeting safety agency requirements |
| Low Rdynamic | Minimizes voltage overshoot during fast transients (e.g., ISO 7637-2 pulse 1/2a/5a), improving system immunity |
| MSL Level 1 rating | Allows unlimited floor life and reflow compatibility up to 260 °C peak, simplifying SMT manufacturing |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface |
|---|---|
Use Scenario: Protecting 12 V/24 V vehicle power buses against load dump and alternator transients per ISO 7637-2. IC Role / Device Role / Timing Role: Standoff-clamp TVS placed upstream of DC-DC converters and microcontrollers. Use Value: Limits bus voltage to ≤103 V during 14.6 A surges, preventing latch-up or damage to downstream AEC-Q100 ICs. | Use Scenario: Shielding 4–20 mA or RS-485 sensor inputs from ESD and lightning-induced surges in factory automation. IC Role / Device Role / Timing Role: Bi-directional transient shunt across differential pair or supply rail. Use Value: Maintains signal integrity by clamping transients within 1 ns while adding <1 pF capacitance at 0 V bias. |
| Telecom Line Interface | Consumer Power Adapter Input |
Use Scenario: Safeguarding Ethernet PHY or DSL line drivers connected to outside plant wiring exposed to induced surges. IC Role / Device Role / Timing Role: Primary surge suppression stage compliant with UL 497B and ITU-T K.21. Use Value: Absorbs 1500 W pulses without degradation, enabling single-stage protection architecture and reducing BOM count. | Use Scenario: Input-stage overvoltage protection in wall adapters and USB PD chargers subject to mains switching transients. IC Role / Device Role / Timing Role: Clamp diode across bridge rectifier output or bulk capacitor input. Use Value: Withstands repeated 10/1000 μs surges up to 14.6 A, extending adapter lifetime in high-noise AC environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ64A-E3/61T | Lower PPPM (400 W), smaller DO-214AC (SMA) package, unidirectional only | Limited to lower-energy transients; unsuitable for bi-directional AC lines or automotive load dump | Select only for space-constrained, low-power consumer applications where bidirectionality is not required |
| SMCJ64CA-E3/9AT | Identical electrical specs and DO-214AB package; CA suffix denotes bi-directional variant (same as SMCJ64HE3/9AT) | No functional difference - HE3 indicates AEC-Q101 qualification; CA confirms bi-directional marking convention | SMCJ64CA-E3/9AT is functionally identical but lacks explicit AEC-Q101 documentation; SMCJ64HE3/9AT preferred for automotive designs requiring certified qualification |
Compared with SMAJ64A-E3/61T and SMCJ64CA-E3/9AT, the SMCJ64HE3/9AT uniquely combines 1500 W surge capability, bi-directional symmetry, and AEC-Q101 validation-making it the only choice for automotive-grade 64 V rail protection where reliability and full-standard compliance are mandatory.
Availability
SMCJ64HE3/9AT is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor systems, and telecom infrastructure requiring stable component supply and long-term lifecycle support.
Supply support for SMCJ64HE3/9AT 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The SMCJ series belongs to Vishay's TRANSZORB® TVS portfolio, engineered specifically for high-energy transient suppression in harsh environments including automotive, industrial, and telecom applications.
FAQ
What is the clamping voltage of the SMCJ64HE3/9AT under a 10/1000 μs surge?
The SMCJ64HE3/9AT clamps to a maximum of 103 V when subjected to its rated peak pulse current of 14.6 A using the standard 10/1000 μs waveform. This value is measured at the device terminals and defines the upper voltage limit imposed on protected circuits during surge events. The SMCJ64HE3/9AT maintains this clamping performance across its full operating temperature range.
Is the SMCJ64HE3/9AT suitable for automotive applications?
Yes, the SMCJ64HE3/9AT is explicitly AEC-Q101 qualified and rated for operation from –55 °C to +150 °C, making it suitable for under-hood and powertrain applications. Its 1500 W peak pulse power and bi-directional clamping meet ISO 7637-2 load dump requirements. The HE3 suffix confirms compliance with JESD 201 Class 2 whisker testing, a critical requirement for automotive PCB assemblies.
Does the SMCJ64HE3/9AT have polarity markings?
No, the SMCJ64HE3/9AT has no polarity marking because it is a bi-directional TVS diode. Unlike uni-directional variants (e.g., SMCJ64A), it lacks a cathode band and functions identically regardless of terminal orientation. This simplifies layout and eliminates risk of incorrect placement in AC-coupled or floating circuits.
What is the standoff voltage (VWM) of the SMCJ64HE3/9AT?
The standoff voltage (VWM) of the SMCJ64HE3/9AT is 64 V - the maximum continuous reverse voltage the device can withstand without entering breakdown. This value ensures compatibility with nominal 48 V and 60 V automotive and industrial systems while maintaining sufficient margin below the 71.1 V minimum breakdown voltage (VBR). The SMCJ64HE3/9AT remains non-conductive below VWM, drawing only ≤1 μA leakage current.
Which package does the SMCJ64HE3/9AT use, and what are its mounting requirements?
The SMCJ64HE3/9AT uses the DO-214AB (SMCJ) surface-mount package with J-bend leads. For optimal thermal and surge performance, it must be mounted on minimum 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal, per Vishay's recommended layout. The device is compatible with standard reflow profiles up to 260 °C peak and qualifies as MSL Level 1.
SMCJ64HE3/9AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 64V
- Voltage - Breakdown (Min):
- 71.1V
- Voltage - Clamping (Max) @ Ipp:
- 114V
- Current - Peak Pulse (10/1000µs):
- 13.2A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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)
SMCJ64HE3/9AT FAQ
1.How can I place an order for SMCJ64HE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ64HE3/9AT 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 SMCJ64HE3/9AT reliable?
The price and inventory of SMCJ64HE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ64HE3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ64HE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ64HE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ64HE3/9AT?
SMCJ64HE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ64HE3/9AT 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 SMCJ64HE3/9AT?
For technical support, including SMCJ64HE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ64HE3/9AT requirements.
6.How does Aetrix verify that SMCJ64HE3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ64HE3/9AT 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 SMCJ64HE3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ64HE3/9AT?
All SMCJ64HE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ64HE3/9AT, 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 SMCJ64HE3/9AT part is unused and in its original packaging.
Return procedure for SMCJ64HE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ64HE3/9AT Tags
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