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Vishay General Semiconductor - Diodes Division SMCJ8.0AHE3/57T
- Part No.:
- SMCJ8.0AHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ8.0AHE3/57T.pdf
- Description:
- TVS DIODE 8VWM 13.6VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,295
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Product details
Overview
SMCJ8.0AHE3/57T from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in 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 rating with a 10/1000 μs waveform - deployed in automotive ECUs, industrial motor drives, and DC-DC converter input stages.
For engineers reviewing the SMCJ8.0AHE3/57T datasheet, SMCJ8.0AHE3/57T pinout, SMCJ8.0AHE3/57T application, or SMCJ8.0AHE3/57T equivalent, key selection criteria include clamping performance under 100 A surge, AEC-Q101 qualification status, SMC (DO-214AB) package thermal resistance (RθJA = 75 °C/W), and unidirectional polarity marking for correct PCB orientation.
Technical Context
This TVS diode operates as a shunt-clamping device triggered by reverse-biased avalanche breakdown above its 8.0 V stand-off threshold. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<50 μA at VWM), while the low incremental surge resistance enables rapid energy diversion during transients.
The device is rated for -55 °C to +150 °C operating junction temperature and meets MSL Level 1 per J-STD-020 with 260 °C lead-free reflow compatibility. Its 1500 W peak pulse power handling is validated on 8.0 mm × 8.0 mm copper pads per terminal, supporting high-energy transient suppression without thermal runaway.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 8.0 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC rail margin. |
| VBR min/max | 8.89 V / 9.83 V at 1.0 mA - Verified breakdown range ensures consistent turn-on across production lots. |
| VC @ IPPM | 13.6 V at 110.3 A - Clamping voltage limits downstream IC stress during worst-case 10/1000 μs surges. |
| PPPM | 1500 W - Peak transient energy absorption capacity under standardized 10/1000 μs waveform. |
| ID @ VWM | <50 μA - Low reverse leakage preserves efficiency in battery-powered or high-impedance circuits. |
| TJ max | +150 °C - Enables deployment in under-hood automotive environments and thermally constrained enclosures. |
| RθJA | 75 °C/W - Thermal resistance from junction to ambient; guides heatsinking requirements on standard FR-4 PCBs. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, molded plastic case with matte tin-plated leads. Cathode indicated by band; polarity-critical for unidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when VLINE exceeds VBR. |
| Anode | Reference node | Typically tied to system ground or lowest potential reference; completes clamping path during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, ADAS sensors, and infotainment power supplies. |
| Glass passivated junction | Ensures long-term stability of breakdown voltage and leakage current across temperature and lifetime stress. |
| Low clamping ratio (VC/VWM = 1.7) | Minimizes voltage overshoot during transients - critical for protecting 5 V and 3.3 V logic interfaces. |
| MSL Level 1, 260 °C peak | Compatible with standard lead-free reflow profiles without preconditioning or baking. |
| UL 94 V-0 molding compound | Meets flammability safety requirements for industrial and transportation equipment enclosures. |
Applications
| Automotive Power Rail Protection | Industrial Motor Drive Control |
|---|---|
Use Scenario: Suppressing load-dump spikes (up to 35 V, 100 ms) on 12 V battery-fed microcontroller power inputs in body control modules. IC Role / Device Role / Timing Role: Shunt-clamping TVS placed between VCC and GND, activated within <1 ns of overvoltage onset. Use Value: Limits voltage seen by MCU to ≤13.6 V during 110 A surge, preventing latch-up or permanent damage. |
Use Scenario: Protecting gate drivers and current-sense amplifiers from inductive kickback during IGBT switching in HVAC compressors. IC Role / Device Role / Timing Role: Unidirectional clamp on low-side driver supply rail, absorbing repetitive 1500 W pulses at 10 kHz switching frequency. Use Value: Maintains signal integrity by holding rail voltage within ±0.5 V of nominal during fast dV/dt events. |
| DC-DC Converter Input Stage | Telecom Line Interface |
Use Scenario: Safeguarding 48 V input stage of isolated buck converters used in PoE-powered network switches. IC Role / Device Role / Timing Role: Primary overvoltage clamp ahead of input filter and controller IC, rated for repeated 10/1000 μs surges. Use Value: Withstands EN 61000-4-5 Level 4 (4 kV) surges without degradation, preserving converter uptime. |
Use Scenario: Shielding RS-485 transceivers from lightning-induced surges on outdoor telecom data lines. IC Role / Device Role / Timing Role: Unidirectional TVS on VCC rail and bidirectional pair on differential bus lines (using SMCJ8.0CA variant). Use Value: Clamps induced transients to <14 V within 1 ns, preventing transceiver latch-up and data corruption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ8.0AHE3/57T | Lower PPPM (400 W), smaller SMA package (DO-214AC), higher RθJA (110 °C/W) | Suitable for lower-energy transients; limited to consumer-grade boards with minimal thermal mass | Select when space-constrained but surge energy is ≤400 W; not drop-in for 1500 W requirements. |
| SMCJ8.0A-E3/57T | Same electrical specs and SMC package, but commercial-grade (non-AEC-Q101 qualified) | Approved for industrial/commercial use only; excluded from automotive production BOMs requiring AEC validation | Choose for cost-sensitive non-automotive designs where AEC-Q101 is not mandated. |
Compared with SMAJ8.0AHE3/57T and SMCJ8.0A-E3/57T, the SMCJ8.0AHE3/57T uniquely combines AEC-Q101 qualification, 1500 W surge capability, and SMC thermal performance - making it the only option among the three qualified for under-hood automotive deployment with full 12 V rail protection coverage.
Availability
SMCJ8.0AHE3/57T is available at Aetrix Electronics and suitable for automotive ECU design, industrial motor drive development, and telecom infrastructure projects requiring stable component supply and long-term lifecycle support.
Supply support for SMCJ8.0AHE3/57T 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and automotive-grade qualification.
The SMCJ series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where failure resilience is mission-critical.
FAQ
What is the clamping voltage of SMCJ8.0AHE3/57T at its rated peak pulse current?
The SMCJ8.0AHE3/57T has a maximum clamping voltage (VC) of 13.6 V when subjected to its rated peak pulse current (IPPM) of 110.3 A under a 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 standards and guarantees predictable overvoltage limiting for downstream circuitry. The SMCJ8.0AHE3/57T maintains this clamping performance across its full operating temperature range (-55 °C to +150 °C).
Is SMCJ8.0AHE3/57T qualified for automotive applications?
Yes, the SMCJ8.0AHE3/57T is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3", which denotes RoHS-compliant and AEC-Q101 validated devices. This qualification covers stress tests including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing - making the SMCJ8.0AHE3/57T suitable for production automotive applications such as body control modules and ADAS power supplies.
What does the "57T" in SMCJ8.0AHE3/57T indicate?
The "57T" suffix in SMCJ8.0AHE3/57T specifies the packaging configuration: 7-inch diameter plastic tape and reel, with a base quantity of 850 units per reel. This format supports automated SMT placement and is compatible with standard pick-and-place equipment. The SMCJ8.0AHE3/57T uses matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards.
How does SMCJ8.0AHE3/57T differ from bidirectional variants like SMCJ8.0CA?
The SMCJ8.0AHE3/57T is unidirectional, with polarity marked by a cathode band and intended for DC rail protection where current flows in one direction. In contrast, SMCJ8.0CA is bidirectional, lacks polarity marking, and suppresses transients on AC or differential lines. Their breakdown voltages differ: SMCJ8.0AHE3/57T has VBR = 8.89–9.83 V, while SMCJ8.0CA has symmetric VBR = 8.89–9.83 V in both directions. The SMCJ8.0AHE3/57T cannot replace SMCJ8.0CA in AC-coupled applications.
What is the thermal resistance of SMCJ8.0AHE3/57T, and how does it affect layout?
The SMCJ8.0AHE3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on minimum recommended pad layout - defined as 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. To maintain safe junction temperatures during repeated surges, PCB layout must provide adequate copper area and avoid thermal isolation. Reducing pad size increases RθJA, risking thermal runaway under high-duty-cycle transients. The SMCJ8.0AHE3/57T's RθJL of 15 °C/W further emphasizes the need for solid thermal connection to internal ground planes.
SMCJ8.0AHE3/57T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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)
SMCJ8.0AHE3/57T FAQ
1.How can I place an order for SMCJ8.0AHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ8.0AHE3/57T 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 SMCJ8.0AHE3/57T reliable?
The price and inventory of SMCJ8.0AHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ8.0AHE3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ8.0AHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ8.0AHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ8.0AHE3/57T?
SMCJ8.0AHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ8.0AHE3/57T 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 SMCJ8.0AHE3/57T?
For technical support, including SMCJ8.0AHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ8.0AHE3/57T requirements.
6.How does Aetrix verify that SMCJ8.0AHE3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ8.0AHE3/57T 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 SMCJ8.0AHE3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ8.0AHE3/57T?
All SMCJ8.0AHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ8.0AHE3/57T, 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 SMCJ8.0AHE3/57T part is unused and in its original packaging.
Return procedure for SMCJ8.0AHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ8.0AHE3/57T Tags
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