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Vishay General Semiconductor - Diodes Division SMCJ64A-E3/9AT
- Part No.:
- SMCJ64A-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ64A-E3/9AT.pdf
- Description:
- TVS DIODE 64VWM 103VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,754
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Product details
Overview
SMCJ64A-E3/9AT from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for clamping voltage transients on power and signal lines. It features 64 V stand-off voltage (VWM), 71.1–78.6 V breakdown voltage (VBR) at 1 mA, 1500 W peak pulse power (10/1000 μs), 14.6 A peak pulse current (IPPM), and 103 V maximum clamping voltage (VC) - deployed in automotive power supply rail protection and industrial sensor interface circuits.
For engineers reviewing the SMCJ64A-E3/9AT datasheet, SMCJ64A-E3/9AT pinout, SMCJ64A-E3/9AT application, or SMCJ64A-E3/9AT equivalent, key selection criteria include unidirectional polarity, 1500 W surge capability, 103 V clamping at rated IPPM, RoHS-compliant matte tin terminals, and AEC-Q101 qualification eligibility via HE3 suffix variants.
Technical Context
This TVS diode operates as a shunt-clamping device that remains high-impedance below VWM = 64 V and rapidly transitions to low-impedance conduction above VBR (min 71.1 V) to limit transient overvoltages. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 μA at VWM).
It delivers 1500 W peak pulse power under standardized 10/1000 μs waveform conditions with thermal resistance RθJA = 75 °C/W and RθJL = 15 °C/W, enabling robust surge handling on standard PCB copper pads (8.0 mm × 8.0 mm per terminal) without active cooling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 64 V - Maximum continuous reverse operating voltage before clamping initiates |
| VBR (min/max) | 71.1 V / 78.6 V at 1 mA - Confirmed breakdown range defining turn-on threshold tolerance |
| VC @ IPPM | 103 V - Clamped voltage during full 1500 W transient, limiting downstream stress |
| IPPM | 14.6 A - Peak surge current supported under 10/1000 μs waveform |
| PPPM | 1500 W - Surge energy absorption capacity critical for ISO 7637-2/IEC 61000-4-5 compliance |
| TJ max | +150 °C - Maximum junction temperature enabling operation in under-hood automotive environments |
| Leakage @ VWM | <1.0 μA - Minimal standby power loss and signal integrity impact in always-on circuits |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, 2-terminal case with cathode band marking. Dimensions: 7.11 mm × 6.22 mm × 2.62 mm (L × W × H); meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode-side connection point for unidirectional clamping | Connected to protected line; conducts when transient exceeds VBR, shunting surge to ground |
| Anode | Reference/ground return path | Typically tied to system ground plane; completes clamping current path during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Enables single-device protection against severe transients per ISO 7637-2 Pulse 5a (load dump) |
| 103 V clamping voltage at 14.6 A | Limits voltage seen by downstream ICs (e.g., CAN transceivers, microcontrollers) during surge events |
| Glass passivated junction | Ensures long-term stability of VBR and low parameter drift across temperature and lifetime |
| MSL Level 1 (260 °C peak reflow) | Supports standard lead-free SMT assembly without moisture sensitivity concerns |
| RoHS-compliant matte tin plating | Guarantees solderability per J-STD-002 and whisker resistance per JESD 201 Class 2 |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump transients up to 120 V. IC Role / Device Role / Timing Role: Shunt-clamping TVS placed between power rail and chassis ground. Use Value: Limits rail voltage to ≤103 V during 1500 W surges, preventing damage to 3.3 V/5 V regulators and MCU power inputs. | Use Scenario: Safeguarding analog outputs of pressure/temperature sensors exposed to ESD and inductive switching noise. IC Role / Device Role / Timing Role: Low-capacitance unidirectional clamp on sensor output line referenced to system ground. Use Value: Sub-1 μA leakage preserves signal accuracy; 103 V clamping prevents op-amp input stage latch-up during 8 kV contact ESD. |
| Telecom Line Interface | Consumer Power Adapter Input |
Use Scenario: Secondary-side DC bus protection in PoE-powered network switches. IC Role / Device Role / Timing Role: Unidirectional TVS on 48 V DC distribution rail upstream of DC/DC converters. Use Value: Withstands repetitive 10/1000 μs surges per IEC 61000-4-5 Level 3 (1 kV line-earth), maintaining system uptime. | Use Scenario: Input-stage surge suppression in universal-input AC/DC adapters (90–264 VAC). IC Role / Device Role / Timing Role: Primary-side clamping device after bridge rectifier, before bulk capacitor. Use Value: 1500 W rating handles high-energy line transients; 150 °C TJ max supports compact, thermally constrained adapter designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ64A-E3/52T | Lower PPPM = 600 W; SMB package (smaller footprint, higher RθJA = 90 °C/W) | Suitable only for lower-energy transients (e.g., IEC 61000-4-2 ESD, not load dump) | Select when board space is constrained and surge threat level is moderate |
| SMCJ64CA-E3/9AT | Bidirectional variant; same VWM, VBR, PPPM, but symmetric clamping in both polarities | Required for AC-coupled or floating signal lines where reverse polarity transients occur | Choose for differential bus protection (e.g., RS-485, CAN FD) or AC signal paths |
Compared with SMBJ64A-E3/52T, SMCJ64A-E3/9AT provides 2.5× higher surge power handling and lower thermal resistance, making it suitable for automotive load dump; versus SMCJ64CA-E3/9AT, it offers lower capacitance and optimized forward conduction for DC rail use, but lacks bidirectional clamping.
Availability
SMCJ64A-E3/9AT is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor systems, and telecom infrastructure requiring stable component supply with traceable sourcing and long-term lifecycle support.
Supply support for SMCJ64A-E3/9AT 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, rectifiers, MOSFETs, and protection devices with emphasis on reliability and automotive-grade qualification.
The SMCJ series is engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom applications demanding AEC-Q101 readiness and robust 1500 W surge immunity.
FAQ
What is the clamping voltage of the SMCJ64A-E3/9AT under maximum rated surge current?
The SMCJ64A-E3/9AT has a maximum clamping voltage (VC) of 103 V when subjected to 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 upper voltage limit imposed on protected circuitry during worst-case transient events. The SMCJ64A-E3/9AT maintains this clamping performance across its specified operating temperature range.
Is the SMCJ64A-E3/9AT RoHS-compliant and lead-free?
Yes, the SMCJ64A-E3/9AT carries the "E3" suffix, indicating full RoHS compliance and lead-free construction per EU Directive 2011/65/EU. Its matte tin-plated terminals meet J-STD-002 solderability requirements and JESD 201 Class 2 whisker resistance testing. The SMCJ64A-E3/9AT is manufactured using halogen-free molding compound and conforms to Vishay's material categorization standard documented in www.vishay.com/doc?99912.
Does the SMCJ64A-E3/9AT have AEC-Q101 qualification?
The base SMCJ64A-E3/9AT is not AEC-Q101 qualified; however, Vishay offers the functionally identical SMCJ64AHE3_X variant (e.g., SMCJ64AHE3_A/I) which carries full AEC-Q101 qualification for automotive applications. That version uses the same die and SMC package but adds extended reliability testing including temperature cycling, humidity bias, and high-temperature operating life. For automotive designs requiring qualification evidence, specify the HE3 suffix variant instead of E3.
What is the thermal resistance of the SMCJ64A-E3/9AT, and how does it affect PCB layout?
The SMCJ64A-E3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on minimum recommended 8.0 mm × 8.0 mm copper pads per terminal. This value assumes no additional heatsinking; reducing pad area increases thermal resistance and limits safe surge repetition rate. To maintain reliability under repeated transients, designers must adhere to the specified pad layout in the Vishay outline drawing and avoid excessive trace narrowing near the device terminals. The SMCJ64A-E3/9AT's RθJL = 15 °C/W further confirms efficient heat transfer to PCB copper.
How does the SMCJ64A-E3/9AT differ from bidirectional TVS diodes like SMCJ64CA-E3/9AT?
The SMCJ64A-E3/9AT is unidirectional and functions only during positive transients relative to its cathode, while the SMCJ64CA-E3/9AT clamps symmetrically in both directions. This makes the SMCJ64A-E3/9AT ideal for DC power rails where polarity is fixed, offering slightly lower leakage and optimized forward conduction. In contrast, SMCJ64CA-E3/9AT is required for AC-coupled or floating lines (e.g., RS-485, CAN) where voltage reversals occur. Both share identical VWM, PPPM, and package, but their polarity behavior is fundamentally distinct - the SMCJ64A-E3/9AT cannot replace SMCJ64CA-E3/9AT in bidirectional applications.
SMCJ64A-E3/9AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SMCJ64A-E3/9AT FAQ
1.How can I place an order for SMCJ64A-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ64A-E3/9AT 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 SMCJ64A-E3/9AT reliable?
The price and inventory of SMCJ64A-E3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ64A-E3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ64A-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ64A-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ64A-E3/9AT?
SMCJ64A-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ64A-E3/9AT 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 SMCJ64A-E3/9AT?
For technical support, including SMCJ64A-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ64A-E3/9AT requirements.
6.How does Aetrix verify that SMCJ64A-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ64A-E3/9AT 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 SMCJ64A-E3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ64A-E3/9AT?
All SMCJ64A-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ64A-E3/9AT, 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 SMCJ64A-E3/9AT part is unused and in its original packaging.
Return procedure for SMCJ64A-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ64A-E3/9AT Tags
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