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Vishay General Semiconductor - Diodes Division SMCJ8.0CAHE3_A/I
- Part No.:
- SMCJ8.0CAHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ8.0CAHE3_A/I.pdf
- Description:
- TVS DIODE 8VWM 13.6VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,187
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Product details
Overview
SMCJ8.0CAHE3_A/I 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), 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 - deployed on power rails and signal lines in automotive ECUs and industrial sensor interfaces.
For engineers reviewing the SMCJ8.0CAHE3_A/I datasheet, SMCJ8.0CAHE3_A/I pinout, SMCJ8.0CAHE3_A/I application, or SMCJ8.0CAHE3_A/I equivalent, this page delivers verified electrical specs, AEC-Q101 qualification status, thermal resistance (RθJA = 75 °C/W), bidirectional clamping behavior, and real-world use cases in CAN bus protection and DC power input stages.
Technical Context
The SMCJ8.0CAHE3_A/I operates as a bidirectional avalanche diode, symmetrically clamping voltage transients in both polarities without polarity marking. Its glass-passivated junction ensures stable breakdown characteristics and low incremental surge resistance, enabling sub-nanosecond response to ESD and lightning-induced surges.
Designed for surface-mount automated assembly, it meets MSL level 1 per J-STD-020 with 260 °C reflow peak, and its matte tin-plated leads comply with J-STD-002 and JESD 22-B102 solderability standards. The device is AEC-Q101 qualified and RoHS-compliant under HE3 suffix designation.
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 mA - Confirmed breakdown range ensuring reliable turn-on margin above VWM |
| VC @ IPPM | 13.6 V at 110.3 A - Clamped voltage during 10/1000 μs surge, limiting downstream stress |
| PPPM | 1500 W - Peak pulse power handling capability for IEC 61000-4-5 Level 4 surge immunity |
| ID @ VWM | 50 μA - Low leakage current preserving signal integrity and standby power efficiency |
| TJ max. | +150 °C - Junction temperature limit supporting under-hood automotive deployment |
| RθJA | 75 °C/W - Thermal resistance defining derating curve for sustained power dissipation |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 7.11 mm × 6.22 mm × 2.62 mm (L × W × H); terminals are matte tin-plated for lead-free reflow compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity) | One terminal of symmetrical PN junction; conducts during negative transients |
| Cathode | Transient current entry (positive polarity) | Other terminal of symmetrical PN junction; conducts during positive transients |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| AEC-Q101 qualification | Validates reliability for automotive applications including engine control, body electronics, and ADAS sensors |
| 1500 W peak pulse rating | Supports IEC 61000-4-5 4th edition surge testing (4 kV line-to-line, 2 kV line-to-ground) |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes voltage overshoot during fast transients, reducing risk of IC latch-up or gate oxide damage |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking, simplifying manufacturing logistics |
Applications
| Automotive Power Input Protection | CAN Bus Transient Suppression |
|---|---|
Use Scenario: 12 V battery-fed ECU power rail exposed to load dump (ISO 7637-2 Pulse 5a) and jump-start spikes. IC Role / Device Role / Timing Role: Primary TVS clamp absorbing >100 A surge currents while holding rail voltage below 15 V. Use Value: Prevents regulator shutdown and microcontroller reset by limiting transient overvoltage to safe levels defined in AEC-Q100 stress categories. | Use Scenario: CAN-H/CAN-L differential pair in vehicle networking subjected to ESD (IEC 61000-4-2) and coupled transients. IC Role / Device Role / Timing Role: Bidirectional shunt protector placed across differential pair to clamp common-mode surges without disrupting data integrity. Use Value: Maintains CAN FD bit timing stability by limiting differential voltage excursion to <25 V during 8 kV contact discharge events. |
| Industrial Sensor Signal Line Protection | DC-DC Converter Input Stage |
Use Scenario: 4–20 mA analog output line from pressure sensor in factory automation exposed to ground loop transients. IC Role / Device Role / Timing Role: Low-leakage (50 μA) bidirectional TVS placed between signal and return, preserving mA accuracy. Use Value: Enables ±12 V transient suppression without adding offset error or degrading 12-bit ADC resolution in PLC analog inputs. | Use Scenario: 24 V input stage of isolated DC-DC converter powering safety-critical logic in railway signaling equipment. IC Role / Device Role / Timing Role: Front-end surge limiter upstream of input filter and primary MOSFET, rated for repetitive 1500 W pulses. Use Value: Extends converter MTBF by preventing gate oxide failure in primary switch during repeated 10/1000 μs surges per EN 50121-3-2. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC8.0CA | Lower PPPM (600 W), higher VC (15.0 V), same VWM and package | Not suitable for IEC 61000-4-5 Level 4; limited to lower-energy transients | Select only when system-level surge testing requires ≤600 W clamping and layout space constraints favor smaller footprint |
| SMCJ8.0CAHM3_A/I | Halogen-free variant; identical electrical specs and AEC-Q101 qualification | No functional difference; required only where halogen-free compliance is mandated (e.g., EU public transport) | Choose when RoHS + halogen-free certification is contractually required; otherwise SMCJ8.0CAHE3_A/I offers full equivalence at lower cost |
Compared with SAC8.0CA and SMCJ8.0CAHM3_A/I, the SMCJ8.0CAHE3_A/I delivers superior surge energy handling (1500 W vs. 600 W) and tighter clamping (13.6 V vs. 15.0 V), while maintaining full AEC-Q101 qualification and RoHS compliance - making it the preferred choice for high-reliability automotive and industrial power rail protection.
Availability
SMCJ8.0CAHE3_A/I is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom power supply designs requiring stable component supply with AEC-Q101 validation and long-term lifecycle support.
Supply support for SMCJ8.0CAHE3_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, and protection devices with emphasis on reliability, precision, and automotive-grade qualification.
The SMCJ series targets high-energy transient suppression in harsh environments, with design focus on automotive power systems, industrial automation, and infrastructure equipment demanding AEC-Q101 compliance and 1500 W surge capability.
FAQ
What is the clamping voltage of SMCJ8.0CAHE3_A/I at its rated peak pulse current?
The SMCJ8.0CAHE3_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 under the standard 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during surge events - critical for ensuring downstream ICs remain within absolute maximum ratings. The SMCJ8.0CAHE3_A/I achieves this with a low clamping ratio of approximately 1.38 relative to its minimum breakdown voltage.
Is SMCJ8.0CAHE3_A/I qualified for automotive applications?
Yes, the SMCJ8.0CAHE3_A/I is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3" and documentation in datasheet 88394 (Revision 09-Jan-2024). This qualification covers stress tests including high-temperature operating life, temperature cycling, and ESD - validating its suitability for under-hood and chassis-mounted automotive modules. The SMCJ8.0CAHE3_A/I is explicitly listed in Vishay's AEC-Q101 qualified product table, and its thermal performance (TJ max. = +150 °C) supports operation in demanding vehicle environments.
How does the bidirectional configuration of SMCJ8.0CAHE3_A/I affect its PCB layout?
The SMCJ8.0CAHE3_A/I has no polarity marking and functions identically in both directions, eliminating orientation constraints during placement. Unlike unidirectional TVS diodes, it requires no cathode band alignment - simplifying automated pick-and-place and reducing assembly errors. Its SMC (DO-214AB) footprint remains unchanged, but designers must ensure symmetric trace routing to maintain balanced impedance on differential lines like CAN or RS-485. The SMCJ8.0CAHE3_A/I's bidirectional nature also avoids the need for dual-device solutions in AC-coupled paths.
What is the maximum reverse leakage current of SMCJ8.0CAHE3_A/I at its stand-off voltage?
The SMCJ8.0CAHE3_A/I exhibits a maximum reverse leakage current (ID) of 50 μA at its stand-off voltage (VWM) of 8.0 V, measured at TA = 25 °C. This low leakage preserves signal fidelity in high-impedance sensor interfaces and minimizes quiescent power loss in always-on automotive modules. Leakage remains below 100 μA up to +85 °C per Vishay's derating curves, ensuring stable performance across extended temperature ranges without compromising battery drain budgets in SMCJ8.0CAHE3_A/I-based designs.
Can SMCJ8.0CAHE3_A/I be used in place of a unidirectional TVS like SMCJ8.0AHE3_A/I?
No - the SMCJ8.0CAHE3_A/I is strictly bidirectional and cannot replace unidirectional variants such as SMCJ8.0AHE3_A/I in circuits requiring DC blocking or polarity-specific clamping. While both share identical VWM (8.0 V), PPPM (1500 W), and package, the unidirectional version includes a cathode band and conducts only during positive transients, whereas the SMCJ8.0CAHE3_A/I clamps equally in both polarities. Substituting them risks improper protection in DC-biased lines or unintended conduction during normal operation - always verify polarity requirements before selecting SMCJ8.0CAHE3_A/I.
SMCJ8.0CAHE3_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:
- -
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SMCJ8.0CAHE3_A/I FAQ
1.How can I place an order for SMCJ8.0CAHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ8.0CAHE3_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 SMCJ8.0CAHE3_A/I reliable?
The price and inventory of SMCJ8.0CAHE3_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 SMCJ8.0CAHE3_A/I is usually 5 days.
3.What payment methods are accepted for SMCJ8.0CAHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ8.0CAHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ8.0CAHE3_A/I?
SMCJ8.0CAHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ8.0CAHE3_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 SMCJ8.0CAHE3_A/I?
For technical support, including SMCJ8.0CAHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ8.0CAHE3_A/I requirements.
6.How does Aetrix verify that SMCJ8.0CAHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SMCJ8.0CAHE3_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 SMCJ8.0CAHE3_A/I meets industry standards.
7.What is the process for return or replacement of SMCJ8.0CAHE3_A/I?
All SMCJ8.0CAHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ8.0CAHE3_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 SMCJ8.0CAHE3_A/I part is unused and in its original packaging.
Return procedure for SMCJ8.0CAHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ8.0CAHE3_A/I Tags
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