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Vishay General Semiconductor - Diodes Division SMCJ6.5A-E3/9AT
- Part No.:
- SMCJ6.5A-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ6.5A-E3/9AT.pdf
- Description:
- TVS DIODE 6.5VWM 11.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,516
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Product details
Overview
SMCJ6.5A-E3/9AT from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, with 6.5 V standoff voltage (VWM), 7.22–7.98 V breakdown voltage (VBR at 10 mA), 11.2 V clamping voltage (VC) at 133.9 A peak pulse current, and 1500 W peak pulse power rating for 10/1000 μs waveform-designed to protect MOSFETs, ICs, and sensor signal lines against inductive switching transients in automotive and industrial power supplies.
For engineers reviewing the SMCJ6.5A-E3/9AT datasheet, SMCJ6.5A-E3/9AT pinout, SMCJ6.5A-E3/9AT application, or SMCJ6.5A-E3/9AT equivalent, key selection criteria include unidirectional polarity, 1500 W surge capability, 11.2 V clamping performance under 133.9 A transient, RoHS-compliant matte tin-plated leads, and AEC-Q101 qualification availability via HE3 suffix variants.
Technical Context
This TVS diode operates as a clamping device that enters avalanche conduction when reverse voltage exceeds its breakdown threshold (7.22–7.98 V), limiting transient energy by diverting surge current away from protected circuitry. Its low incremental surge resistance and fast response time ensure effective suppression of sub-microsecond transients induced by inductive load switching.
Thermal design relies on junction-to-lead thermal resistance of 15 °C/W and junction-to-ambient of 75 °C/W, requiring appropriate PCB copper pad area (8.0 mm × 8.0 mm per terminal) for rated 1500 W pulse handling. The device meets MSL level 1 per J-STD-020 with 260 °C reflow peak temperature tolerance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.5 V - maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 7.22 V / 7.98 V at 10 mA - ensures reliable turn-on within defined tolerance band |
| VC @ IPPM | 11.2 V at 133.9 A - clamping voltage limits downstream component stress during 10/1000 μs surge |
| PPPM | 1500 W - peak pulse power dissipation capability defines transient energy absorption capacity |
| IFSM | 200 A - 8.3 ms half-sine surge current rating supports high-energy inductive kick protection |
| TJ range | −55 °C to +150 °C - enables operation in under-hood automotive and industrial environments |
| Package | SMC (DO-214AB) - standardized surface-mount outline with cathode band marking and 0.320" body length |
Pinout & Package
SMCJ6.5A-E3/9AT uses the SMC (DO-214AB) package: a surface-mount, molded plastic case with two terminals, matte tin-plated leads solderable per J-STD-002 and JESD 22-B102, and cathode indicated by a band on the body end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / reverse surge return path | Connected to ground or low-impedance return plane during transient events |
| Cathode | Reverse voltage sensing / clamping node | Connected to protected line (e.g., 6.5 V rail or signal trace); band-marked end |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMC package | Enables automated placement and fits space-constrained PCB layouts without height interference |
| Glass passivated junction | Ensures stable electrical characteristics and long-term reliability under thermal cycling and humidity |
| 1500 W peak pulse rating | Provides robust protection against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 4 surges |
| 11.2 V clamping at 133.9 A | Keeps protected ICs and MOSFETs below absolute maximum ratings during worst-case transients |
| AEC-Q101 qualified option | HE3 suffix variant available for automotive applications requiring validated reliability and qualification testing |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 6.5 V supply rails in engine control units (ECUs) and body control modules from load dump and inductive switching spikes. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between rail and ground, activated within nanoseconds upon overvoltage detection. Use Value: Limits rail voltage excursion to ≤11.2 V during 133.9 A transients, preventing latch-up or gate oxide damage in downstream 6.5 V logic and drivers. | Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) in factory automation systems from ESD and relay coil flyback. IC Role / Device Role / Timing Role: Standoff-clamp protector on signal line, with 6.5 V VWM matching typical sensor output swing and 11.2 V VC preserving ADC input integrity. Use Value: Maintains signal fidelity by clamping transients before they exceed the 12 V absolute max rating of common rail-to-rail op-amps and SAR ADCs. |
| Consumer DC-DC Converter Output Protection | Telecom Interface Port Surge Suppression |
Use Scenario: Safeguarding 6.5 V output of buck converters powering microcontrollers and communication ICs in smart home hubs. IC Role / Device Role / Timing Role: Secondary-side TVS connected across output capacitor, absorbing residual switching noise and board-level ESD. Use Value: Prevents brownout resets and flash corruption by holding output voltage above 5.5 V minimum MCU supply requirement during 1500 W surges. | Use Scenario: Front-end protection for RS-485 or CAN physical layer transceivers exposed to lightning-induced surges on building wiring. IC Role / Device Role / Timing Role: Unidirectional clamp referenced to local ground, placed upstream of transceiver's VCC-referenced receiver inputs. Use Value: Clamps common-mode surges to ≤11.2 V while preserving differential signal integrity and meeting IEC 61000-4-5 4 kV compliance margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ6.5A-E3/52T | Lower 600 W PPPM, SMB (DO-214AA) package, same VWM/VBR specs | Suitable for lower-energy transients; not recommended for ISO 7637-2 Pulse 5a or IEC 61000-4-5 Level 4 | Select when board space is tighter and surge requirements are ≤600 W |
| SMCJ6.5CA-E3/9AT | Bidirectional version with identical VWM, VBR, and PPPM; no polarity marking | Required for AC-coupled or dual-polarity signal lines where reverse voltage may occur | Choose only when bidirectional clamping is mandated by circuit topology |
Compared with SMBJ6.5A-E3/52T and SMCJ6.5CA-E3/9AT, the SMCJ6.5A-E3/9AT delivers higher surge robustness in the same footprint while maintaining unidirectional polarity-making it optimal for 6.5 V DC rail protection where directional surge paths exist and 1500 W capability is required.
Availability
SMCJ6.5A-E3/9AT is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface design, and telecom port surge suppression requiring stable component supply, consistent RoHS-compliant manufacturing, and tape-and-reel delivery for SMT production.
Supply support for SMCJ6.5A-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, efficiency, and application-specific optimization.
The SMCJ series is engineered for high-energy transient suppression in harsh environments-including automotive, industrial, and telecom-where 1500 W clamping performance, AEC-Q101 qualification, and DO-214AB mechanical robustness are critical.
FAQ
What is the clamping voltage of the SMCJ6.5A-E3/9AT under maximum rated surge current?
The SMCJ6.5A-E3/9AT has a maximum clamping voltage (VC) of 11.2 V when subjected to its peak pulse current (IPPM) of 133.9 A using a 10/1000 μs waveform. This value is measured per standard test conditions and defines the upper voltage limit imposed on protected circuitry during worst-case transient events. The SMCJ6.5A-E3/9AT maintains this clamping performance across its full operating temperature range.
Is the SMCJ6.5A-E3/9AT RoHS-compliant and lead-free?
Yes, the SMCJ6.5A-E3/9AT carries the "E3" suffix, indicating full RoHS compliance and commercial-grade qualification per EU Directive 2011/65/EU. Its matte tin-plated leads are lead-free and solderable per J-STD-002 and JESD 22-B102 standards. The device also passes JESD 201 Class 2 whisker testing, confirming long-term interconnect reliability in lead-free assembly processes. The SMCJ6.5A-E3/9AT meets all material restrictions without exemptions.
Can the SMCJ6.5A-E3/9AT be used in automotive applications?
The base SMCJ6.5A-E3/9AT is commercial-grade, but Vishay offers AEC-Q101 qualified versions under the HE3 suffix (e.g., SMCJ6.5AHE3_A/I). These variants undergo stress testing per AEC-Q101-004 for robustness in automotive under-hood environments. While the SMCJ6.5A-E3/9AT itself is not AEC-Q101 certified, its thermal and electrical specifications-including 150 °C TJ max and 200 A IFSM-align with automotive surge requirements when paired with proper layout and qualification of the full system. For production automotive use, specify the HE3 variant.
What is the standoff voltage and breakdown voltage range for the SMCJ6.5A-E3/9AT?
The SMCJ6.5A-E3/9AT has a standoff voltage (VWM) of 6.5 V and a breakdown voltage (VBR) range of 7.22 V to 7.98 V at 10 mA test current. This 10% VBR tolerance ensures predictable turn-on behavior while allowing margin between normal operation and clamping onset. The device remains non-conductive up to 6.5 V and initiates avalanche conduction within the specified VBR window, making the SMCJ6.5A-E3/9AT suitable for protecting 6.5 V rails where precise voltage margining is required.
How does the SMCJ6.5A-E3/9AT differ from the SMCJ6.5CA-E3/9AT?
The SMCJ6.5A-E3/9AT is unidirectional, with a cathode band marking and forward conduction capability, whereas the SMCJ6.5CA-E3/9AT is bidirectional-functionally equivalent to two anti-series diodes-with no polarity marking and symmetrical clamping in both directions. Both share identical VWM (6.5 V), VBR (7.22–7.98 V), and PPPM (1500 W) ratings. The choice depends on circuit topology: use the SMCJ6.5A-E3/9AT for DC rails and polarized signals; select the SMCJ6.5CA-E3/9AT for AC-coupled lines or interfaces where reverse voltage excursions occur.
SMCJ6.5A-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):
- 6.5V
- Voltage - Breakdown (Min):
- 7.22V
- Voltage - Clamping (Max) @ Ipp:
- 11.2V
- Current - Peak Pulse (10/1000µs):
- 133.9A
- 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)
SMCJ6.5A-E3/9AT FAQ
1.How can I place an order for SMCJ6.5A-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ6.5A-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 SMCJ6.5A-E3/9AT reliable?
The price and inventory of SMCJ6.5A-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 SMCJ6.5A-E3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ6.5A-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ6.5A-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ6.5A-E3/9AT?
SMCJ6.5A-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ6.5A-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 SMCJ6.5A-E3/9AT?
For technical support, including SMCJ6.5A-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ6.5A-E3/9AT requirements.
6.How does Aetrix verify that SMCJ6.5A-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ6.5A-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 SMCJ6.5A-E3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ6.5A-E3/9AT?
All SMCJ6.5A-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ6.5A-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 SMCJ6.5A-E3/9AT part is unused and in its original packaging.
Return procedure for SMCJ6.5A-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ6.5A-E3/9AT Tags
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