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Vishay General Semiconductor - Diodes Division SMCJ8.0CAHM3/H
- Part No.:
- SMCJ8.0CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ8.0CAHM3/H.pdf
- Description:
- TVS DIODE 8VWM 13.6VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,550
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Product details
Overview
SMCJ8.0CAHM3/H from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for robust overvoltage protection of sensitive electronics. It features a 8.0 V stand-off voltage (VWM), 1500 W peak pulse power (PPPM), and clamps transients to ≤13.6 V at 110.3 A (10/1000 µs waveform), with AEC-Q101 qualification for automotive use.
For engineers reviewing the SMCJ8.0CAHM3/H datasheet, SMCJ8.0CAHM3/H pinout, SMCJ8.0CAHM3/H application, or SMCJ8.0CAHM3/H equivalent, key selection criteria include bidirectional clamping capability, low clamping voltage under high surge current, halogen-free RoHS compliance, MSL Level 1 rating, and automotive-grade reliability per AEC-Q101.
Technical Context
This device operates as a voltage-clamping protector using an avalanche breakdown mechanism, with symmetrical bidirectional behavior enabling suppression of both positive and negative transients without polarity sensitivity. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at VWM), while the SMC package supports automated placement and meets UL 94 V-0 flammability requirements.
The thermal design leverages a typical junction-to-lead thermal resistance of 15 °C/W and junction-to-ambient of 75 °C/W, enabling reliable operation up to +150 °C junction temperature. It is rated for non-repetitive 8.3 ms half-sine surge currents up to 200 A (unidirectional only) and derates linearly above 25 °C ambient per Figure 2.
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 1.0 mA - Verified breakdown threshold range ensuring consistent turn-on behavior |
| VC @ IPPM | 13.6 V at 110.3 A (10/1000 µs) - Clamping voltage limiting downstream circuit stress during surge events |
| PPPM | 1500 W - Peak transient energy handling capacity under standardized surge waveform |
| ID @ VWM | ≤1.0 µA - Ultra-low reverse leakage preserving signal integrity and minimizing standby power loss |
| TJ max | +150 °C - Maximum junction temperature supporting operation in under-hood automotive environments |
| Package | SMC (DO-214AB) - Surface-mount package with 8.0 mm × 8.0 mm copper pad thermal footprint |
Pinout & Package
SMCJ8.0CAHM3/H is a bidirectional TVS diode housed in the SMC (DO-214AB) package. As a two-terminal device with symmetrical construction, it has no polarity marking and functions identically in either orientation. The package features matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient current path | Both terminals serve as interchangeable surge current entry/exit points; no cathode band marking required for bidirectional operation |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or differential signal lines without polarity concerns |
| AEC-Q101 qualified | Validated for automotive applications including engine control units, infotainment, and ADAS sensor interfaces |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for global OEM supply chains and end-of-life recycling |
| MSL Level 1 (260 °C peak) | Supports standard reflow soldering processes without moisture-related popcorning risk |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 Pulse 1/2a/5a) |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting LIN bus or 12 V power rails in body control modules against load dump and inductive switching spikes. IC Role / Device Role / Timing Role: Voltage clamping element placed between power rail and ground to shunt surge energy away from downstream regulators and microcontrollers. Use Value: Limits transient voltage to ≤13.6 V during 110.3 A surges, preventing latch-up or permanent damage to 5 V/3.3 V logic circuits. | Use Scenario: Safeguarding analog outputs of pressure or temperature sensors connected to PLC I/O modules exposed to EMI and field wiring transients. IC Role / Device Role / Timing Role: Bidirectional transient suppressor across signal and return lines to clamp common-mode and differential noise. Use Value: Maintains signal fidelity by suppressing sub-100 ns spikes while adding <1 pF junction capacitance at zero bias. |
| Telecom Data Line Surge Protection | Consumer USB Port ESD Protection |
Use Scenario: Shielding RS-485 transceivers in base station backhaul links from lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Primary line-side TVS placed before isolation transformers or common-mode chokes to absorb bulk surge energy. Use Value: Handles 1500 W peak pulse power without degradation, sustaining repeated 10/1000 µs surges per IEC 61000-4-5 Level 4. | Use Scenario: Hardening USB 2.0 D+/D− lines in smart home hubs against human-body-model (HBM) and system-level ESD events. IC Role / Device Role / Timing Role: Fast-response bidirectional clamp integrated into USB connector PCB footprint to divert ESD current to chassis ground. Use Value: Responds in <1 ps to clamp ±15 kV contact discharge to <20 V, meeting IEC 61000-4-2 Level 4 immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ8.0CA | Lower PPPM (400 W), same VWM and VC, SMA package (smaller thermal mass) | Not suitable for high-energy automotive load dump; limited to consumer-grade surge events | Select when space-constrained layouts require smaller footprint and surge energy is ≤400 W |
| SMCJ8.0CAHE3/H | Identical electrical specs; differs only in halogen content (HE3 = RoHS-compliant commercial grade, HM3 = halogen-free) | No functional difference; HE3 used where halogen-free requirement is not mandated | Choose HM3 variant like SMCJ8.0CAHM3/H when full halogen-free compliance is required for automotive Tier 1 programs |
Compared with SMAJ8.0CA and SMCJ8.0CAHE3/H, the SMCJ8.0CAHM3/H delivers higher surge robustness (1500 W vs. 400 W) and halogen-free construction, making it optimal for automotive and industrial applications demanding both high energy handling and strict material compliance.
Availability
SMCJ8.0CAHM3/H is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor systems, and telecom infrastructure requiring stable component supply with AEC-Q101 qualification and halogen-free compliance.
Supply support for SMCJ8.0CAHM3/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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMCJ series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-energy transient suppression in harsh environments such as automotive power distribution, industrial automation, and communications infrastructure.
FAQ
What is the clamping voltage of the SMCJ8.0CAHM3/H under maximum rated surge current?
The SMCJ8.0CAHM3/H 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 and reflects worst-case voltage seen by protected circuitry during surge events, directly enabling safe interface with 5 V or 3.3 V logic components.
Is the SMCJ8.0CAHM3/H suitable for automotive applications?
Yes, the SMCJ8.0CAHM3/H is AEC-Q101 qualified and carries the HM3 suffix indicating halogen-free, RoHS-compliant construction. It is explicitly rated for automotive use in engine control, body electronics, and ADAS subsystems, with validated performance across -55 °C to +150 °C junction temperature and compliance with ISO 7637-2 and IEC 61000-4-5 surge immunity standards.
How does the bidirectional configuration of SMCJ8.0CAHM3/H affect its circuit implementation?
The bidirectional configuration of SMCJ8.0CAHM3/H eliminates polarity constraints during PCB layout-no cathode band marking is present, and either terminal may connect to signal or power lines. This simplifies design for AC-coupled interfaces like RS-485, CAN FD, or audio lines, where transients can occur in either polarity and traditional unidirectional TVS diodes would require dual placement or external biasing.
What is the thermal resistance profile of SMCJ8.0CAHM3/H, and how does it impact PCB layout?
The SMCJ8.0CAHM3/H has a typical junction-to-lead thermal resistance (RθJL) of 15 °C/W and junction-to-ambient (RθJA) of 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads per terminal. To maintain reliability under repeated surges, PCB layout must replicate this minimum pad area; reducing pad size increases thermal impedance and risks exceeding the +150 °C maximum junction temperature during high-duty-cycle transients.
Does SMCJ8.0CAHM3/H meet lead-free soldering requirements?
Yes, the SMCJ8.0CAHM3/H features matte tin-plated leads qualified to J-STD-002 and JESD 22-B102, supporting lead-free reflow profiles with peak temperatures up to 260 °C (MSL Level 1). Its halogen-free molding compound and RoHS compliance ensure compatibility with modern environmentally regulated manufacturing processes without compromising surge performance or long-term reliability.
SMCJ8.0CAHM3/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:
- -
- Bidirectional Channels:
- 1
- 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)
SMCJ8.0CAHM3/H FAQ
1.How can I place an order for SMCJ8.0CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ8.0CAHM3/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 SMCJ8.0CAHM3/H reliable?
The price and inventory of SMCJ8.0CAHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ8.0CAHM3/H is usually 5 days.
3.What payment methods are accepted for SMCJ8.0CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ8.0CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ8.0CAHM3/H?
SMCJ8.0CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ8.0CAHM3/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 SMCJ8.0CAHM3/H?
For technical support, including SMCJ8.0CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ8.0CAHM3/H requirements.
6.How does Aetrix verify that SMCJ8.0CAHM3/H is sourced from the original manufacturer or authorized distributors?
All SMCJ8.0CAHM3/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 SMCJ8.0CAHM3/H meets industry standards.
7.What is the process for return or replacement of SMCJ8.0CAHM3/H?
All SMCJ8.0CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ8.0CAHM3/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 SMCJ8.0CAHM3/H part is unused and in its original packaging.
Return procedure for SMCJ8.0CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ8.0CAHM3/H Tags
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