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Vishay General Semiconductor - Diodes Division SMCJ8.0-E3/9AT
- Part No.:
- SMCJ8.0-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ8.0-E3/9AT.pdf
- Description:
- TVS DIODE 8VWM 15VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,634
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Product details
Overview
SMCJ8.0-E3/9AT from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-214AB (SMCJ) package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 8.0 V stand-off voltage (VWM), 13.6 V maximum clamping voltage at 110.3 A peak pulse current, and 1500 W peak pulse power dissipation with 10/1000 µs waveform - deployed in automotive ECUs, industrial PLC I/O modules, and telecom power supplies.
For engineers reviewing the SMCJ8.0-E3/9AT datasheet, SMCJ8.0-E3/9AT pinout, SMCJ8.0-E3/9AT application, or SMCJ8.0-E3/9AT equivalent, key selection criteria include unidirectional polarity, 6.40–7.07 V breakdown voltage range at 10 mA test current, AEC-Q101 qualification, RoHS-compliant matte tin plating, and MSL Level 1 moisture sensitivity rating.
Technical Context
The SMCJ8.0-E3/9AT operates as a silicon avalanche diode that enters breakdown when reverse voltage exceeds its VBR (6.40–7.07 V), clamping transients to ≤13.6 V while diverting up to 110.3 A (10/1000 µs). Its glass-passivated junction ensures stable leakage (<50 µA at VWM) and fast response time (<1.0 ps).
Thermal design relies on low thermal resistance: RθJA = 75 °C/W (on recommended 8.0 mm × 8.0 mm copper pads) and RθJL = 15 °C/W, enabling reliable operation up to TJ = 150 °C. The device is rated for non-repetitive surge currents up to 200 A (8.3 ms half-sine) and meets UL 497B recognition (QVGQ2).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 8.0 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 6.40 V / 7.07 V at IT = 10 mA - Ensures predictable breakdown onset across production lot |
| VC @ IPPM | 13.6 V at 110.3 A - Limits protected circuit voltage during worst-case 10/1000 µs surge |
| PPPM | 1500 W - Peak transient energy handling capability under standardized waveform |
| ID @ VWM | ≤50 µA - Low leakage preserves efficiency in always-on power rail protection |
| TJ max | +150 °C - Enables use in under-hood automotive and high-ambient industrial environments |
| Package | DO-214AB (SMCJ) - Surface-mount outline with J-bend leads for automated placement and mechanical robustness |
Pinout & Package
DO-214AB (SMCJ) package: molded epoxy case with J-bend leads, 0.320" (8.13 mm) body length, cathode band marking on anode-side end. Matte tin-plated terminals meet J-STD-002 solderability and JESD22-B102 reliability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection in unidirectional TVS configuration | Connected to ground or low-impedance return path; current flows from cathode to anode during clamping |
| Cathode | High-side connection; marked by band | Connected to protected line (e.g., 12 V rail); reverse-biased during normal operation, avalanches during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan |
| Glass-passivated junction | Eliminates surface contamination risks and ensures stable VBR and leakage over lifetime and humidity exposure |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without preconditioning or dry-pack requirements |
| UL 497B recognized (QVGQ2) | Approved for use in telecom and industrial surge protection circuits requiring third-party safety certification |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., ISO 7637-2 Pulse 1/2a) |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed microcontroller power inputs in engine control units against load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VIN and GND, clamping surges above 8.0 V before they reach LDO or MCU VDD. Use Value: Withstands 1500 W peak pulses and clamps to ≤13.6 V, preventing latch-up or permanent damage to 5 V tolerant logic. | Use Scenario: Safeguarding analog sensor outputs (e.g., 4–20 mA loop transmitters) from ESD and inductive switching noise in factory automation systems. IC Role / Device Role / Timing Role: Placed across sensor output and reference ground, absorbing ±8 kV contact ESD per IEC 61000-4-2 without degrading signal fidelity. Use Value: Low 50 µA leakage at 8.0 V ensures minimal offset error in precision current loops; fast response prevents transient coupling into ADC front-end. |
| Telecom DC Power Input Protection | Consumer Power Adapter Output Clamping |
Use Scenario: Secondary-side overvoltage suppression on -48 V DC telecom rectifier outputs exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Unidirectional clamp referenced to system ground, activated only during positive-going transients on the negative rail. Use Value: 1500 W PPPM rating handles multi-kA induced surges; UL 497B recognition satisfies Telcordia GR-1089-CORE compliance requirements. | Use Scenario: Output rail clamping in USB-C PD adapters to prevent overvoltage damage to connected devices during feedback loop failure. IC Role / Device Role / Timing Role: Connected between +20 V output and ground, triggered when output rises beyond 8.0 V due to optocoupler or controller fault. Use Value: Clamps within picoseconds to ≤13.6 V, limiting downstream IC stress to safe levels while surviving repeated 10/1000 µs events per IEC 61000-4-5. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ8.0A-E3/52T | Lower PPPM (600 W), smaller SMB package (DO-214AA), same VWM/VBR/VC specs | Suitable for space-constrained consumer electronics where 1500 W surge margin is not required | Select when board area is limited and peak surge energy is ≤600 W; verify thermal derating on smaller pad layout |
| SMCJ8.0AHE3/9AT | Identical electrical specs but AEC-Q101 qualified version (HE3 suffix), same DO-214AB package | Required for automotive OEM designs needing full automotive qualification documentation and traceability | Choose for Tier-1 automotive programs; SMCJ8.0-E3/9AT is commercial-grade with AEC-Q101 optional via HE3 variant |
Compared with SMBJ8.0A-E3/52T, SMCJ8.0-E3/9AT delivers 2.5× higher surge power handling in a larger footprint; versus SMCJ8.0AHE3/9AT, it shares identical performance but lacks formal AEC-Q101 certification documentation - making it suitable for industrial and telecom applications where qualification is not mandated.
Availability
SMCJ8.0-E3/9AT is available at Aetrix Electronics and suitable for automotive ECU power protection, industrial I/O module surge hardening, and telecom DC input safeguarding requiring stable component supply and long-term lifecycle support.
Supply support for SMCJ8.0-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, power efficiency, and application-specific validation.
The SMCJ series targets high-energy transient suppression in harsh environments; engineered for automotive, industrial, and telecom infrastructure where robustness, AEC-Q101 compliance, and UL recognition are mandatory design requirements.
FAQ
What is the breakdown voltage range of the SMCJ8.0-E3/9AT?
The SMCJ8.0-E3/9AT has a guaranteed breakdown voltage (VBR) range of 6.40 V to 7.07 V at 10 mA test current (IT), measured per ANSI/IEEE C62.35. This tight tolerance ensures consistent clamping behavior across manufacturing lots and supports reliable overvoltage threshold setting in protected circuits using the SMCJ8.0-E3/9AT.
Is the SMCJ8.0-E3/9AT suitable for automotive applications?
The SMCJ8.0-E3/9AT is RoHS-compliant and manufactured in an AEC-Q101-capable process, but the E3 suffix denotes commercial-grade qualification. For full automotive compliance, Vishay offers the SMCJ8.0AHE3/9AT variant. Engineers deploying the SMCJ8.0-E3/9AT in automotive contexts must validate its suitability per their internal reliability requirements, as the SMCJ8.0-E3/9AT itself does not carry formal AEC-Q101 certification.
What is the maximum clamping voltage of the SMCJ8.0-E3/9AT under surge conditions?
The SMCJ8.0-E3/9AT clamps to a maximum of 13.6 V when subjected to its rated peak pulse current of 110.3 A (10/1000 µs waveform). This value is measured at the device terminals under standardized test conditions and defines the upper voltage limit imposed on protected circuitry during transient events - a critical parameter for ensuring downstream ICs remain within absolute maximum ratings when using the SMCJ8.0-E3/9AT.
Does the SMCJ8.0-E3/9AT have polarity marking, and how is it oriented?
Yes - the SMCJ8.0-E3/9AT is unidirectional and features a cathode band marking on the anode-side end of the DO-214AB package. During PCB layout, the banded end must be connected to the line being protected (e.g., +12 V rail), while the unbanded end connects to ground. Incorrect orientation will prevent proper clamping and may cause catastrophic failure under reverse bias, so correct placement of the SMCJ8.0-E3/9AT is essential.
What packaging format does the SMCJ8.0-E3/9AT ship in?
The SMCJ8.0-E3/9AT ships in 13-inch diameter plastic tape and reel packaging (package code 9AT), with 3500 units per reel. This format is optimized for high-speed SMT placement equipment and complies with EIA-481-D standards. The tape features embossed pockets, cover tape with heat-seal adhesive, and sprocket holes aligned for standard feeder compatibility - ensuring reliable feeding and placement of the SMCJ8.0-E3/9AT in automated assembly lines.
SMCJ8.0-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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 8V
- Voltage - Breakdown (Min):
- 8.89V
- Voltage - Clamping (Max) @ Ipp:
- 15V
- Current - Peak Pulse (10/1000µs):
- 100A
- 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)
SMCJ8.0-E3/9AT FAQ
1.How can I place an order for SMCJ8.0-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ8.0-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 SMCJ8.0-E3/9AT reliable?
The price and inventory of SMCJ8.0-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 SMCJ8.0-E3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ8.0-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ8.0-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ8.0-E3/9AT?
SMCJ8.0-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ8.0-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 SMCJ8.0-E3/9AT?
For technical support, including SMCJ8.0-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ8.0-E3/9AT requirements.
6.How does Aetrix verify that SMCJ8.0-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ8.0-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 SMCJ8.0-E3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ8.0-E3/9AT?
All SMCJ8.0-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ8.0-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 SMCJ8.0-E3/9AT part is unused and in its original packaging.
Return procedure for SMCJ8.0-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ8.0-E3/9AT Tags
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