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Vishay General Semiconductor - Diodes Division SMCJ8.0AHE3_A/I
- Part No.:
- SMCJ8.0AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ8.0AHE3_A/I.pdf
- Description:
- TVS DIODE 8VWM 13.6VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,830
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Product details
Overview
SMCJ8.0AHE3_A/I 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 a 8.0 V stand-off voltage (VWM), 13.6 V maximum clamping voltage (VC) at 110.3 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 power supplies.
For engineers reviewing the SMCJ8.0AHE3_A/I datasheet, SMCJ8.0AHE3_A/I pinout, SMCJ8.0AHE3_A/I application, or SMCJ8.0AHE3_A/I equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification status, thermal resistance (RθJA = 75 °C/W), junction temperature range (–55 °C to +150 °C), and compliance with UL 497B surge protector classification.
Technical Context
This TVS diode operates as a clamping device that remains non-conductive below its 8.0 V stand-off voltage (VWM) and rapidly transitions to low-impedance conduction when transient voltage exceeds its 8.89–9.83 V breakdown range (VBR) at 10 mA test current. Its glass-passivated junction ensures stable performance under repetitive surge stress.
Designed for automated SMT assembly, it meets J-STD-020 MSL Level 1 (260 °C peak reflow), JESD 201 Class 2 whisker resistance, and UL 94 V-0 flammability. The matte tin-plated leads are solderable per J-STD-002 and JESD 22-B102, with cathode indicated by a band on the unidirectional package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 8.0 V - Maximum continuous reverse operating voltage before clamping begins; defines safe operating margin for 5 V–12 V rail protection. |
| VBR min/max | 8.89 V / 9.83 V at IT = 10 mA - Confirmed breakdown threshold ensures predictable turn-on during overvoltage events. |
| VC @ IPPM | 13.6 V at 110.3 A (10/1000 μs) - Clamping voltage limits downstream component stress during worst-case surge. |
| PPPM | 1500 W - Peak transient energy handling capacity compatible with IEC 61000-4-5 Level 4 surge immunity testing. |
| TJ max | +150 °C - Enables operation in under-hood automotive environments and high-temperature industrial enclosures. |
| RθJA | 75 °C/W - Thermal resistance measured on 8.0 mm × 8.0 mm copper pads; informs heatsinking requirements for sustained surge duty. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness per AEC standard. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile case with matte tin-plated leads. Cathode identified by molded band. Compliant with UL 94 V-0 and RoHS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to protected line ground or low-side reference | Provides return path during clamping; must be routed with low-inductance trace to minimize voltage overshoot. |
| Cathode | Current exit terminal in forward bias; marked by band; connected to protected line (e.g., 5 V rail) | Defines polarity-sensitive placement - reversal prevents clamping and risks catastrophic failure under surge. |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMC package | Enables high-density PCB layouts and compatibility with automated pick-and-place systems without height interference. |
| Glass-passivated junction | Ensures long-term stability of VBR and leakage current under thermal cycling and humidity exposure. |
| 1500 W peak pulse power | Supports single-event surge suppression up to IEC 61000-4-5 4 kV/2 Ω (open-circuit) or 2 kV/12 Ω (line-to-line) tests. |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body control, and ADAS modules requiring zero-defect reliability. |
| UL 497B recognition (QVGQ2) | Confirms compliance as a listed surge protector for telecom, industrial, and automotive communication interfaces. |
Applications
| Automotive Power Supply Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 5 V microcontroller supply rails in engine control units (ECUs) exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between VCC and GND, activated within <1 ps to limit transient overshoot. Use Value: Limits clamped voltage to ≤13.6 V, preventing latch-up or gate oxide damage in 5 V logic devices during 12 V system surges. |
Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loop) of pressure sensors in factory automation PLCs. IC Role / Device Role / Timing Role: Bidirectional-capable unidirectional TVS (used with series resistor) suppresses ESD and inductive kickback on signal paths. Use Value: Maintains signal integrity by clamping transients before they reach precision DACs or op-amps, with <1 μA leakage at 8.0 V. |
| Consumer USB Power Delivery | Telecom Line Card Surge Protection |
|
Use Scenario: Safeguarding USB-C VBUS input stages in portable chargers and docking stations against hot-plug and cable discharge events. IC Role / Device Role / Timing Role: Primary clamping device on 5 V–20 V input rail, coordinated with upstream fuse and secondary filtering. Use Value: Absorbs 1500 W surges without degradation, enabling compliance with USB-IF ESD stress test requirements (±15 kV air, ±8 kV contact). |
Use Scenario: Front-end protection for Ethernet PHY power pins and auxiliary DC feeds in telecom base station line cards. IC Role / Device Role / Timing Role: Standoff-rated TVS on 3.3 V/5 V auxiliary rails, selected for low VC to preserve voltage margin for PoE controllers. Use Value: Delivers 13.6 V clamping at full rated current, ensuring downstream PMICs remain within absolute maximum ratings during lightning-induced surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ8.0AHE3_A/I | Lower PPPM (400 W), smaller SMA package (DO-214AC), higher RθJA (110 °C/W), same VWM/VBR/VC specs | Suitable for lower-energy surges or space-constrained designs where 1500 W headroom is unnecessary | Select when board area is critical and surge threat level is ≤IEC 61000-4-5 Level 2. |
| SMCJ8.0CAHE3_A/I | Bidirectional variant; identical VWM (8.0 V), symmetric VBR (8.89–9.83 V), same PPPM/VC/RθJA, no polarity marking | Required for AC-coupled or floating signal lines (e.g., RS-485, CAN bus) where reverse polarity transients occur | Choose only when bidirectional clamping is mandated by circuit topology or standards compliance. |
Compared with SMCJ8.0AHE3_A/I, SMAJ8.0AHE3_A/I trades surge capacity for footprint reduction, while SMCJ8.0CAHE3_A/I adds bidirectional symmetry at no cost to clamping performance - both require layout review due to differing package dimensions and polarity constraints.
Availability
SMCJ8.0AHE3_A/I is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, USB-C PD adapters, and telecom line cards requiring stable component supply with AEC-Q101 assurance and UL 497B recognition.
Supply support for SMCJ8.0AHE3_A/I 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 validation.
The SMCJ series targets high-energy transient suppression in harsh environments - engineered for automotive, industrial, and telecom systems where failure tolerance and long-term parametric stability are mandatory.
FAQ
What is the clamping voltage of SMCJ8.0AHE3_A/I at its rated peak pulse current?
The SMCJ8.0AHE3_A/I has a maximum clamping voltage (VC) of 13.6 V when subjected to its rated peak pulse current (IPPM) of 110.3 A using the standard 10/1000 μs waveform. This value is measured under defined test conditions per JEDEC standards and ensures downstream components see limited overvoltage during surge events. The SMCJ8.0AHE3_A/I maintains this clamping performance across its operational temperature range and after multiple surge cycles, provided derating guidelines are followed.
Is SMCJ8.0AHE3_A/I qualified for automotive applications?
Yes, SMCJ8.0AHE3_A/I is AEC-Q101 qualified, meaning it has passed rigorous stress tests including high-temperature reverse bias (HTRB), temperature cycling, and ESD verification required for automotive electronic modules. The "HE3" suffix explicitly denotes RoHS-compliant and AEC-Q101 qualified construction. This makes the SMCJ8.0AHE3_A/I suitable for use in engine control units, body electronics, and ADAS subsystems where reliability under thermal and electrical stress is critical.
How does the SMCJ8.0AHE3_A/I differ from the bidirectional SMCJ8.0CAHE3_A/I?
The SMCJ8.0AHE3_A/I is unidirectional with cathode polarity marked by a band, while SMCJ8.0CAHE3_A/I is bidirectional with no polarity marking and symmetrical clamping in both directions. Both share identical VWM (8.0 V), VBR (8.89–9.83 V), VC (13.6 V), and PPPM (1500 W). The SMCJ8.0AHE3_A/I is used on DC rails like 5 V or 12 V supplies; the CA version is required for AC or floating lines such as RS-485 or CAN where voltage reversals occur.
What is the thermal resistance of SMCJ8.0AHE3_A/I, and how does it affect layout?
The SMCJ8.0AHE3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads per terminal. This value assumes minimum recommended pad layout per Vishay's datasheet. To maintain safe junction temperatures during repeated surges, designers must ensure adequate copper area and avoid excessive trace length or isolation. Reducing pad size increases RθJA and may cause thermal runaway under high-duty-cycle transients.
Can SMCJ8.0AHE3_A/I be used in place of SMAJ8.0AHE3_A/I?
No - SMCJ8.0AHE3_A/I and SMAJ8.0AHE3_A/I are not interchangeable without design review. While both share VWM (8.0 V) and VC (13.6 V), the SMCJ version delivers 1500 W peak pulse power in an SMC (DO-214AB) package, whereas the SMAJ version is rated for only 400 W in a smaller SMA (DO-214AC) package. Substituting SMCJ8.0AHE3_A/I for SMAJ8.0AHE3_A/I requires verifying PCB pad layout, thermal relief, and mechanical clearance for the larger SMC outline.
SMCJ8.0AHE3_A/I 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SMCJ8.0AHE3_A/I FAQ
1.How can I place an order for SMCJ8.0AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ8.0AHE3_A/I 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 SMCJ8.0AHE3_A/I reliable?
The price and inventory of SMCJ8.0AHE3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ8.0AHE3_A/I is usually 5 days.
3.What payment methods are accepted for SMCJ8.0AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ8.0AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ8.0AHE3_A/I?
SMCJ8.0AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ8.0AHE3_A/I 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 SMCJ8.0AHE3_A/I?
For technical support, including SMCJ8.0AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ8.0AHE3_A/I requirements.
6.How does Aetrix verify that SMCJ8.0AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SMCJ8.0AHE3_A/I 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 SMCJ8.0AHE3_A/I meets industry standards.
7.What is the process for return or replacement of SMCJ8.0AHE3_A/I?
All SMCJ8.0AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ8.0AHE3_A/I, 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 SMCJ8.0AHE3_A/I part is unused and in its original packaging.
Return procedure for SMCJ8.0AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ8.0AHE3_A/I Tags
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