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Vishay General Semiconductor - Diodes Division SMCJ8.0AHM3/H
- Part No.:
- SMCJ8.0AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ8.0AHM3/H.pdf
- Description:
- TVS DIODE 8VWM 13.6VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,657
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Product details
Overview
SMCJ8.0AHM3/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) in SMC (DO-214AB) package, designed for clamping voltage transients on power and signal lines. It features 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 SMCJ8.0AHM3/H datasheet, SMCJ8.0AHM3/H pinout, SMCJ8.0AHM3/H application, or SMCJ8.0AHM3/H equivalent, key selection criteria include its AEC-Q101 qualification (HM3 suffix), halogen-free RoHS compliance, low incremental surge resistance, and verified clamping performance under repetitive surge stress per IEC 61000-4-5.
Technical Context
This TVS diode operates as a unidirectional overvoltage clamp, leveraging a glass-passivated silicon junction to achieve sub-nanosecond response time and stable breakdown behavior. Its 8.89–9.83 V breakdown voltage (VBR) at 10 mA IT ensures precise triggering above system operating voltage while maintaining low leakage (<50 μA at VWM).
The device is rated for 150 °C maximum junction temperature and exhibits a +0.069 %/°C VBR temperature coefficient - enabling predictable clamping across automotive thermal ranges. Thermal resistance is 75 °C/W (junction-to-ambient) on standard 8.0 mm × 8.0 mm copper pads, supporting robust surge energy dissipation without external heatsinking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 8.0 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR min/max | 8.89 V / 9.83 V at 10 mA - defines reliable turn-on threshold with tight tolerance |
| VC @ IPPM | 13.6 V at 110.3 A - clamping voltage during 10/1000 μs surge, limiting downstream stress |
| PPPM | 1500 W - peak transient power handling capability per single surge event |
| ID @ VWM | <50 μA - ultra-low leakage preserves signal integrity and battery life in standby |
| TJ max | +150 °C - supports operation in under-hood automotive and high-temperature industrial environments |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 7.75 mm × 6.22 mm footprint |
Pinout & Package
SMCJ8.0AHM3/H uses the SMC (DO-214AB) package: a molded, low-profile, surface-mount case with matte tin-plated leads solderable per J-STD-002. Polarity is marked by a cathode band; anode and cathode terminals are arranged in a single-row, two-terminal configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when V > VBR |
| Anode | Reference/return path | Typically tied to system ground or low-impedance return plane for effective clamping |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance |
| Halogen-free & RoHS-compliant | Meets global environmental regulations without compromising surge robustness or thermal stability |
| Low incremental surge resistance | Enables tighter VC/VBR ratio (13.6 V / ~9.36 V avg), minimizing let-through voltage |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns |
| Glass passivated junction | Ensures long-term parameter stability and resistance to humidity-induced degradation |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp surges exceeding 13.6 V. Use Value: Prevents damage to downstream DC-DC converters and microcontrollers during ISO 7637-2 Pulse 5a events. | Use Scenario: Shielding analog output lines of pressure/temperature sensors from ESD and cable discharge events. IC Role / Device Role / Timing Role: TVS mounted at connector entry point to shunt fast transients before reaching precision amplifier inputs. Use Value: Maintains signal fidelity with <50 μA leakage at 8.0 V, avoiding offset drift in µV-level measurement circuits. |
| Consumer Power Adapter Input Stage | Telecom Line Card Surge Protection |
Use Scenario: Safeguarding AC-DC adapter primary-side rectifier outputs from switching spikes and lightning-induced surges. IC Role / Device Role / Timing Role: Clamping device across bulk capacitor to limit voltage overshoot during MOSFET turn-off. Use Value: Withstands 1500 W peak pulses and 200 A IFSM, enabling compact designs without derating. | Use Scenario: Protecting Ethernet PHY interface lines (e.g., MDI) from induced surges per IEC 61000-4-5 Level 4. IC Role / Device Role / Timing Role: Bidirectional-capable family member (though SMCJ8.0AHM3/H is unidirectional) used in conjunction with common-mode chokes. Use Value: Verified clamping performance at 110.3 A IPPM ensures compliance with telecom surge immunity standards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ8.0AHE3/A | Lower PPPM (400 W), smaller SMA package, same VWM/VBR range | Not suitable for 1500 W surge events; limited to low-energy signal-line protection | Select only where board space is constrained and surge threat level is ≤ Class 2 IEC 61000-4-5 |
| SMCJ8.0A-M3/57T | Same electrical specs but commercial-grade (non-AEC-Q101), M3 halogen-free RoHS | Lacks automotive qualification; not approved for under-hood or safety-critical modules | Prefer for cost-sensitive industrial or consumer applications without automotive lifecycle requirements |
Compared with SMAJ8.0AHE3/A and SMCJ8.0A-M3/57T, the SMCJ8.0AHM3/H uniquely combines AEC-Q101 qualification, 1500 W surge rating, and halogen-free compliance - making it the only choice for automotive power rail protection requiring zero field failure under sustained thermal and surge stress.
Availability
SMCJ8.0AHM3/H is available at Aetrix Electronics and suitable for automotive electronics, industrial motor drives, and telecom infrastructure requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for SMCJ8.0AHM3/H 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, and protection devices with emphasis on reliability and application-specific performance.
The SMCJ series is engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where failure due to voltage surges must be eliminated.
FAQ
What is the clamping voltage of SMCJ8.0AHM3/H at its rated peak pulse current?
The SMCJ8.0AHM3/H 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 predictable overvoltage limiting for protected circuitry downstream of the SMCJ8.0AHM3/H.
Is SMCJ8.0AHM3/H qualified for automotive applications?
Yes, the SMCJ8.0AHM3/H carries the HM3 suffix, indicating it is halogen-free, RoHS-compliant, and AEC-Q101 qualified. This certification covers stress tests including high-temperature reverse bias, temperature cycling, and surge endurance - confirming suitability for automotive power distribution modules, body control units, and ADAS sensor power rails where SMCJ8.0AHM3/H is deployed.
What does the "H" in SMCJ8.0AHM3/H ordering code signify?
The "H" in SMCJ8.0AHM3/H denotes the preferred package code for 7-inch plastic tape-and-reel delivery (850 units per reel). It is part of Vishay's standardized ordering structure and does not affect electrical or thermal specifications - the core device remains identical to other SMCJ8.0AHM3 variants with different packaging codes like "I" for 13-inch reels.
How does SMCJ8.0AHM3/H differ from bidirectional SMCJ8.0CA variants?
The SMCJ8.0AHM3/H is unidirectional, with polarity indicated by a cathode band and intended for DC line protection where current flows in one direction. In contrast, SMCJ8.0CA is bidirectional, lacks polarity marking, and clamps transients in both directions - making it suitable for AC lines or differential signal pairs. The SMCJ8.0AHM3/H cannot substitute for SMCJ8.0CA in symmetrical surge environments without circuit redesign.
What is the thermal resistance of SMCJ8.0AHM3/H under standard mounting conditions?
The SMCJ8.0AHM3/H has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on the minimum recommended pad layout: 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. This value assumes still air convection and is critical for calculating safe operating area during repetitive surge events - directly influencing reliability when SMCJ8.0AHM3/H is used in high-duty-cycle protection schemes.
SMCJ8.0AHM3/H 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMCJ8.0AHM3/H FAQ
1.How can I place an order for SMCJ8.0AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ8.0AHM3/H 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 SMCJ8.0AHM3/H reliable?
The price and inventory of SMCJ8.0AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ8.0AHM3/H is usually 5 days.
3.What payment methods are accepted for SMCJ8.0AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ8.0AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ8.0AHM3/H?
SMCJ8.0AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ8.0AHM3/H 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 SMCJ8.0AHM3/H?
For technical support, including SMCJ8.0AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ8.0AHM3/H requirements.
6.How does Aetrix verify that SMCJ8.0AHM3/H is sourced from the original manufacturer or authorized distributors?
All SMCJ8.0AHM3/H 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 SMCJ8.0AHM3/H meets industry standards.
7.What is the process for return or replacement of SMCJ8.0AHM3/H?
All SMCJ8.0AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ8.0AHM3/H, 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 SMCJ8.0AHM3/H part is unused and in its original packaging.
Return procedure for SMCJ8.0AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ8.0AHM3/H Tags
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