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Vishay General Semiconductor - Diodes Division SMCJ8.0A-M3/9AT
- Part No.:
- SMCJ8.0A-M3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ8.0A-M3/9AT.pdf
- Description:
- TVS DIODE 8VWM 13.6VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,067
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Product details
Overview
SMCJ8.0A-M3/9AT from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for clamping voltage transients up to 1500 W peak pulse power with 13.6 V clamping voltage at 110.3 A surge current and 8.0 V stand-off voltage. It protects MOSFETs, ICs, and sensor signal lines in automotive and industrial power rails.
For engineers reviewing the SMCJ8.0A-M3/9AT datasheet, SMCJ8.0A-M3/9AT pinout, SMCJ8.0A-M3/9AT application, or SMCJ8.0A-M3/9AT equivalent, key selection criteria include unidirectional polarity, 8.89–9.83 V breakdown range at 1 mA, 75 °C/W junction-to-ambient thermal resistance, halogen-free RoHS compliance, and AEC-Q101 qualification availability via HM3 suffix variants.
Technical Context
This TVS diode operates as a clamping device in parallel with protected circuitry, responding within picoseconds to voltage spikes exceeding its reverse stand-off voltage (VWM = 8.0 V). Its glass-passivated junction ensures stable breakdown behavior and low incremental surge resistance under 10/1000 μs waveform stress.
Designed for automated SMT placement on 8.0 mm × 8.0 mm copper pads per terminal, it meets MSL Level 1 per J-STD-020 with 260 °C reflow peak and supports operation from –55 °C to +150 °C junction temperature, with cathode band marking for polarity identification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 8.0 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 8.89 V / 9.83 V at 1 mA - Confirmed breakdown range defining turn-on threshold tolerance |
| VC @ IPPM | 13.6 V at 110.3 A - Clamped voltage during 1500 W transient, limiting downstream stress |
| IPPM | 110.3 A - Peak surge current capability under standardized 10/1000 μs waveform |
| PPPM | 1500 W - Peak pulse power rating determining transient energy absorption capacity |
| TJ max | +150 °C - Maximum junction temperature enabling use in under-hood automotive environments |
| RθJA | 75 °C/W - Thermal resistance indicating required PCB copper area for thermal management |
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. Cathode marked by band on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or low-potential node during transient clamping |
| Cathode | High-side connection point | Connected to protected line; band-marked end accepts positive transient surge |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMC package | Enables high-density PCB layouts and compatibility with standard SMT pick-and-place equipment |
| Glass-passivated junction | Ensures stable electrical characteristics and long-term reliability under repeated surge events |
| 1500 W peak pulse power | Absorbs high-energy transients common in automotive load-dump and inductive switching scenarios |
| Halogen-free M3 suffix | Meets environmental compliance requirements for industrial and automotive supply chains |
| MSL Level 1 rating | Allows unlimited floor life and single-reflow processing without moisture sensitivity concerns |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs against ISO 7637-2 Pulse 1, 2a, and 5a transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp overvoltage spikes before they reach downstream regulators and microcontrollers. Use Value: Limits clamped voltage to 13.6 V, preventing damage to 16 V-rated input stages while handling 110.3 A surge currents. | Use Scenario: Shielding analog output lines of pressure or temperature sensors from ESD and cable discharge events. IC Role / Device Role / Timing Role: Parallel-connected TVS on signal path to shunt fast transients (<1 ns rise time) to ground without affecting DC signal integrity. Use Value: 1.0 μA max leakage at 8.0 V ensures minimal loading on high-impedance sensor outputs. |
| Consumer Power Adapter Input Stage | Telecom DC Power Interface |
Use Scenario: Safeguarding AC/DC adapter primary-side rectifier and controller ICs from line surges and lightning-induced transients. IC Role / Device Role / Timing Role: Front-end unidirectional TVS absorbing differential-mode surges on DC bus prior to filtering and regulation. Use Value: 1500 W rating provides margin above IEC 61000-4-5 Level 4 (4 kV) test requirements. | Use Scenario: Protecting PoE-powered equipment inputs from induced surges on Ethernet cabling and DC feed lines. IC Role / Device Role / Timing Role: Standoff-rated TVS on 48 V DC input rail to prevent latch-up or gate oxide rupture in PMICs and interface ICs. Use Value: 8.0 V VWM allows safe operation with 5 V logic control circuits while clamping to 13.6 V during fault conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ8.0A-M3 | Lower PPPM (400 W), smaller SMA package, same VWM/VBR range | Not suitable for 1500 W surge environments; limited to lower-energy consumer interfaces | Select when board space is constrained and surge threat level is ≤400 W |
| SMCJ8.0CA-M3 | Bidirectional variant; identical VWM, VBR, and PPPM but symmetrical clamping in both polarities | Required for AC-coupled or floating signal lines where polarity reversal may occur | Select for bidirectional protection needs such as RS-485 or CAN bus lines |
Compared with SMAJ8.0A-M3 and SMCJ8.0CA-M3, the SMCJ8.0A-M3/9AT delivers higher surge robustness in unidirectional configurations while maintaining halogen-free compliance and AEC-Q101 qualification path-making it optimal for automotive power domains where 1500 W clamping headroom and thermal stability are critical.
Availability
SMCJ8.0A-M3/9AT is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor modules, and telecom power interface designs requiring stable component supply, halogen-free compliance, and high-energy transient immunity.
Supply support for SMCJ8.0A-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 performance.
The SMCJ series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-power transient suppression in harsh environments including automotive, industrial, and telecom infrastructure.
FAQ
What is the breakdown voltage range of the SMCJ8.0A-M3/9AT?
The SMCJ8.0A-M3/9AT has a guaranteed breakdown voltage range of 8.89 V to 9.83 V at a test current of 1 mA, measured per ANSI/IEEE C62.35 standards. This range ensures consistent clamping onset across manufacturing lots and temperature extremes, directly supporting design margin calculations for protected circuits. The SMCJ8.0A-M3/9AT maintains this specification under full rated junction temperature conditions.
Is the SMCJ8.0A-M3/9AT suitable for automotive applications?
Yes-the SMCJ8.0A-M3/9AT is halogen-free and RoHS-compliant, and an AEC-Q101 qualified version is available under the HM3 suffix (e.g., SMCJ8.0A-HM3/9AT). Its 1500 W peak pulse power, –55 °C to +150 °C operating range, and MSL Level 1 rating make it appropriate for under-hood and chassis-mounted automotive electronics. The SMCJ8.0A-M3/9AT itself is commercial-grade but shares identical electrical and mechanical specs with qualified variants.
How does the SMCJ8.0A-M3/9AT differ from bidirectional TVS diodes like SMCJ8.0CA-M3?
The SMCJ8.0A-M3/9AT is unidirectional and features a cathode band for polarity-sensitive placement, clamping only positive transients relative to ground. In contrast, SMCJ8.0CA-M3 is bidirectional with no polarity marking and clamps transients of either polarity symmetrically. Both share identical VWM, VBR, and PPPM ratings, but the SMCJ8.0A-M3/9AT is selected for DC power rails where polarity is fixed and cost or layout simplicity favors unidirectional implementation.
What is the maximum clamping voltage of the SMCJ8.0A-M3/9AT during surge events?
The SMCJ8.0A-M3/9AT clamps to a maximum of 13.6 V when subjected to its rated peak pulse current of 110.3 A under the standard 10/1000 μs waveform. This value is measured at the device terminals with specified PCB pad layout (0.31″ × 0.31″ copper per terminal) and defines the upper voltage limit imposed on protected circuitry during worst-case transient events. The SMCJ8.0A-M3/9AT achieves this with low incremental surge resistance for minimal voltage overshoot.
Does the SMCJ8.0A-M3/9AT require heatsinking for standard operation?
No external heatsink is required for transient suppression duty, as the SMCJ8.0A-M3/9AT is rated for 6.5 W steady-state power dissipation on an infinite heatsink at TA = 50 °C-but typical TVS operation is intermittent. Its RθJA of 75 °C/W means thermal management relies on PCB copper area: minimum 8.0 mm × 8.0 mm pads per terminal are specified to sustain surge ratings. The SMCJ8.0A-M3/9AT performs reliably without added heatsinks in pulsed applications across its full temperature range.
SMCJ8.0A-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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 8V
- Voltage - Breakdown (Min):
- 8.89V
- Voltage - Clamping (Max) @ Ipp:
- 13.6V
- Current - Peak Pulse (10/1000µs):
- 110.3A
- 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)
SMCJ8.0A-M3/9AT FAQ
1.How can I place an order for SMCJ8.0A-M3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ8.0A-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 SMCJ8.0A-M3/9AT reliable?
The price and inventory of SMCJ8.0A-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 SMCJ8.0A-M3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ8.0A-M3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ8.0A-M3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ8.0A-M3/9AT?
SMCJ8.0A-M3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ8.0A-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 SMCJ8.0A-M3/9AT?
For technical support, including SMCJ8.0A-M3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ8.0A-M3/9AT requirements.
6.How does Aetrix verify that SMCJ8.0A-M3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ8.0A-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 SMCJ8.0A-M3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ8.0A-M3/9AT?
All SMCJ8.0A-M3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ8.0A-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 SMCJ8.0A-M3/9AT part is unused and in its original packaging.
Return procedure for SMCJ8.0A-M3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ8.0A-M3/9AT Tags
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Diodes Incorporated
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