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Vishay General Semiconductor - Diodes Division SMCJ6.5CA-M3/9AT
- Part No.:
- SMCJ6.5CA-M3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ6.5CA-M3/9AT.pdf
- Description:
- TVS DIODE 6.5VWM 11.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,720
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Product details
Overview
SMCJ6.5CA-M3/9AT 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 signal or power lines. It features a 6.5 V stand-off voltage (VWM), 11.2 V maximum clamping voltage (VC) at 133.9 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM) with 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial control systems.
For engineers reviewing the SMCJ6.5CA-M3/9AT datasheet, SMCJ6.5CA-M3/9AT pinout, SMCJ6.5CA-M3/9AT application, or SMCJ6.5CA-M3/9AT equivalent, key selection criteria include bidirectional clamping capability, halogen-free RoHS compliance (M3 suffix), 1500 W surge rating, junction temperature range of –55 °C to +150 °C, and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
The SMCJ6.5CA-M3/9AT operates as a bidirectional avalanche diode, exhibiting symmetrical breakdown behavior in both polarities with minimum breakdown voltage (VBR) of 7.22 V and maximum of 7.98 V at 10 mA test current. Its low incremental surge resistance enables fast transient response (<1 ns), while glass-passivated junction ensures stable performance under repetitive surge stress.
Thermally, it delivers RθJA = 75 °C/W and RθJL = 15 °C/W, supporting operation up to 150 °C junction temperature. The device meets MSL Level 1 per J-STD-020, with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102, and qualifies for automotive-grade applications when ordered with HE3/HM3 suffixes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.5 V - Maximum reverse stand-off voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (min/max) | 7.22 V / 7.98 V at IT = 10 mA - Ensures reliable bidirectional avalanche conduction across production lot. |
| VC @ IPPM | 11.2 V at 133.9 A - Clamped voltage during 10/1000 μs surge; protects downstream 3.3 V or 5 V logic from overvoltage damage. |
| PPPM | 1500 W - Peak pulse power handling capacity; supports IEC 61000-4-5 Level 4 surge immunity testing. |
| ID @ VWM | 500 μA - Low leakage at rated stand-off voltage; minimizes standby power loss in battery-powered systems. |
| TJ Range | –55 °C to +150 °C - Enables deployment in under-hood automotive, industrial motor drives, and outdoor telecom equipment. |
| Package | SMC (DO-214AB) - Standardized surface-mount outline with 8.0 mm × 8.0 mm thermal pad footprint for PCB-level heat dissipation. |
Pinout & Package
SMCJ6.5CA-M3/9AT uses the SMC (DO-214AB) package: a molded plastic case with two coplanar terminals, no polarity marking (bidirectional), and matte tin-plated leads. Mounting requires 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal for rated thermal and surge performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (symmetrical) | Bidirectional conduction path - either terminal serves as anode or cathode depending on transient polarity. |
| Terminal 2 | Anode/Cathode (symmetrical) | Identical electrical role to Terminal 1; no functional distinction - enables flexible PCB layout without orientation constraints. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns. |
| 1500 W peak pulse power | Withstands IEC 61000-4-5 combination wave surges (1.2/50 μs voltage, 8/20 μs current) up to Level 4 (4 kV/2 kA). |
| Halogen-free & RoHS-compliant (M3) | Meets environmental compliance requirements for automotive and industrial OEMs without compromising surge robustness. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life before reflow; eliminates baking requirement and simplifies SMT manufacturing flow. |
| Glass-passivated junction | Provides stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ESD events in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed between signal line and ground, responding within <1 ns to transients exceeding VWM. Use Value: Limits induced voltage to ≤11.2 V during 133.9 A surge, preventing latch-up or gate oxide damage in 5 V or 3.3 V interface ICs. |
Use Scenario: Safeguarding digital input/output channels of programmable logic controllers against inductive switching spikes from solenoids and relays. IC Role / Device Role / Timing Role: Parallel-connected transient suppressor on each I/O line, conducting surge energy away from microcontroller GPIO pins. Use Value: Maintains system uptime by absorbing 1500 W surges without degradation, meeting IEC 61000-4-4 (EFT) and IEC 61000-4-5 (surge) immunity standards. |
| Telecom Line Interface | Consumer Power Adapter Input |
|
Use Scenario: Shielding Ethernet PHYs and DSL line drivers from lightning-induced surges entering via RJ-45 ports in base stations and CPE devices. IC Role / Device Role / Timing Role: First-stage protection element placed before common-mode chokes and secondary TVS arrays. Use Value: Clamps differential-mode transients to 11.2 V while sustaining 133.9 A peak current, preserving signal integrity and reducing secondary protection burden. |
Use Scenario: Input-stage surge suppression in AC-DC adapters for smart home hubs and IoT gateways exposed to mains-borne transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp across bulk capacitor input, triggered by line-to-line or line-to-ground surges. Use Value: Withstands repeated 1500 W pulses without parameter drift, extending adapter lifetime and enabling UL/IEC 62368-1 compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.5CA-E3/61T | Lower PPPM (400 W), SMA package (smaller thermal mass), higher RθJA (110 °C/W) | Restricted to lower-energy transients; unsuitable for IEC 61000-4-5 Level 4 or high-current inductive loads | Select when board space is constrained and surge threat level is limited to IEC 61000-4-4 EFT only. |
| SMCJ6.5CAHE3_A/I | AEC-Q101 qualified, identical electrical specs, same SMC package, HM3 variant available for halogen-free automotive use | Required for automotive OEM designs needing qualification evidence; same footprint and layout as SMCJ6.5CA-M3/9AT | Choose for automotive applications where AEC-Q101 documentation and traceability are mandatory. |
Compared with SMAJ6.5CA-E3/61T, SMCJ6.5CA-M3/9AT delivers 275 % higher surge power handling and superior thermal dissipation; versus SMCJ6.5CAHE3_A/I, it shares identical clamping and packaging but lacks AEC-Q101 certification - making it optimal for industrial and telecom applications requiring high-reliability surge suppression without automotive qualification overhead.
Availability
SMCJ6.5CA-M3/9AT is available at Aetrix Electronics and suitable for automotive sensor protection, industrial PLC I/O hardening, and telecom line interface applications requiring stable component supply, halogen-free compliance, and repeatable 1500 W surge performance.
Supply support for SMCJ6.5CA-M3/9AT 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 targets high-energy transient suppression in harsh environments - engineered for automotive, industrial, and telecom systems where robustness, thermal stability, and standardized SMT compatibility are critical design requirements.
FAQ
What is the clamping voltage of SMCJ6.5CA-M3/9AT at its rated peak pulse current?
The SMCJ6.5CA-M3/9AT has a maximum clamping voltage (VC) of 11.2 V when subjected to its rated peak pulse current (IPPM) of 133.9 A under the standard 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees that downstream circuitry sees no more than 11.2 V during surge events, protecting 3.3 V and 5 V logic interfaces. The SMCJ6.5CA-M3/9AT maintains this clamping performance across its full operating temperature range.
Is SMCJ6.5CA-M3/9AT suitable for automotive applications?
The SMCJ6.5CA-M3/9AT is halogen-free and RoHS-compliant but not AEC-Q101 qualified. It may be used in non-safety-critical automotive subsystems such as infotainment or body electronics where qualification is not mandated. For engine control, ADAS, or safety-related modules, the AEC-Q101-qualified variant SMCJ6.5CAHE3_A/I or SMCJ6.5CAHM3_A/I must be selected. The SMCJ6.5CA-M3/9AT shares identical electrical and mechanical specifications with those variants except for qualification documentation and traceability.
How does the bidirectional configuration of SMCJ6.5CA-M3/9AT affect its PCB layout?
The SMCJ6.5CA-M3/9AT has no polarity marking and functions identically in either orientation, allowing unrestricted placement on PCBs - no anode/cathode alignment is required. This simplifies layout for AC-coupled lines, differential pairs, or floating grounds. Engineers can route traces symmetrically without concern for device orientation, reducing design iteration time and eliminating assembly errors. The SMCJ6.5CA-M3/9AT's DO-214AB footprint remains unchanged regardless of mounting direction.
What thermal derating applies to SMCJ6.5CA-M3/9AT above 25 °C ambient?
The SMCJ6.5CA-M3/9AT follows the derating curve in Figure 2 of Vishay document 88394: its peak pulse power (PPPM) decreases linearly above TA = 25 °C, reaching ~75 % of 1500 W at 75 °C and zero at 150 °C. This reflects junction-to-ambient thermal resistance (RθJA = 75 °C/W). To maintain full rating, ensure PCB copper pad area matches the 8.0 mm × 8.0 mm recommendation and avoid nearby heat sources. The SMCJ6.5CA-M3/9AT's thermal performance is validated under these conditions.
Does SMCJ6.5CA-M3/9AT meet any industry surge immunity standards?
Yes - the SMCJ6.5CA-M3/9AT's 1500 W PPPM rating with 10/1000 μs waveform aligns with IEC 61000-4-5 Level 4 surge testing (4 kV line-to-earth, 2 kA line-to-line). Its low clamping voltage (11.2 V), fast response (<1 ns), and low dynamic impedance enable compliant system-level designs when combined with proper PCB layout and filtering. The SMCJ6.5CA-M3/9AT is widely deployed in industrial and telecom equipment certified to IEC 61000-4-5, IEC 61000-4-4, and UL 497B.
SMCJ6.5CA-M3/9AT 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:
- -
- Bidirectional Channels:
- 1
- 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 (SMC)
SMCJ6.5CA-M3/9AT FAQ
1.How can I place an order for SMCJ6.5CA-M3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ6.5CA-M3/9AT 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 SMCJ6.5CA-M3/9AT reliable?
The price and inventory of SMCJ6.5CA-M3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ6.5CA-M3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ6.5CA-M3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ6.5CA-M3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ6.5CA-M3/9AT?
SMCJ6.5CA-M3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ6.5CA-M3/9AT 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 SMCJ6.5CA-M3/9AT?
For technical support, including SMCJ6.5CA-M3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ6.5CA-M3/9AT requirements.
6.How does Aetrix verify that SMCJ6.5CA-M3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ6.5CA-M3/9AT 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 SMCJ6.5CA-M3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ6.5CA-M3/9AT?
All SMCJ6.5CA-M3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ6.5CA-M3/9AT, 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 SMCJ6.5CA-M3/9AT part is unused and in its original packaging.
Return procedure for SMCJ6.5CA-M3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ6.5CA-M3/9AT Tags
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