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Vishay General Semiconductor - Diodes Division SMB8J7.0C-E3/5B
- Part No.:
- SMB8J7.0C-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J7.0C-E3/5B.pdf
- Description:
- TVS DIODE 7VWM 13.3VC DO214AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMB8J7.0C-E3/5B from Vishay General Semiconductor is a bi-directional transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, designed for high-energy surge protection on signal and power lines. It features 7.0 V stand-off voltage (VWM), 12.0 V maximum clamping voltage (VC) at 400 A peak pulse current (IPPM), and 800 W peak pulse power (PPPM) with 10/1000 μs waveform - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMB8J7.0C-E3/5B datasheet, SMB8J7.0C-E3/5B pinout, SMB8J7.0C-E3/5B application, or SMB8J7.0C-E3/5B equivalent, key selection criteria include bi-directional clamping capability, AEC-Q101 qualification, low clamping ratio (VC/VWM = 1.71), thermal resistance (RθJA = 72 °C/W), and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This bi-directional TVS operates symmetrically across both polarities, enabling robust protection against ESD, lightning-induced transients, and inductive switching spikes without polarity sensitivity. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1.0 μA at VWM), while the DO-214AA package supports MSL Level 1 handling and 260 °C lead-free reflow.
The device delivers 800 W peak pulse power per IEC 61000-4-5 (10/1000 μs) with a clamping voltage of 12.0 V at 400 A, achieving a clamping ratio of 1.71 - critical for safeguarding 5 V–12 V logic and analog circuits. Thermal performance is characterized by RθJA = 72 °C/W and RθJL = 20 °C/W, enabling reliable operation up to TJ = 150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.0 V - maximum continuous reverse operating voltage before conduction begins; sets safe margin above 5 V rail systems. |
| VBR min/max | 7.78 V / 8.60 V at IT = 10 mA - precise breakdown threshold ensuring consistent turn-on during transients. |
| VC @ IPPM | 12.0 V at IPPM = 400 A - clamping voltage limits downstream IC stress during 800 W surge events. |
| PPPM | 800 W (10/1000 μs) - energy-handling capacity suitable for automotive load-dump and ISO 7637-2 Pulse 5a compliance. |
| ID @ VWM | <1.0 μA - ultra-low leakage preserves signal integrity and battery life in always-on sensor nodes. |
| TJ max | 150 °C - enables deployment in under-hood automotive environments and industrial enclosures without derating. |
| RθJA | 72 °C/W - defines thermal rise under steady-state dissipation; requires ≥5.0 mm × 5.0 mm copper pad per terminal for full rating. |
Pinout & Package
Package: DO-214AA (SMB), surface-mount, bi-directional configuration with no polarity marking - symmetrical terminals suitable for AC-coupled or differential signal lines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional surge path | Either terminal serves as anode or cathode depending on transient polarity; no color band or marking required. |
| Cathode Band (absent) | Polarity indicator | Not present - confirms bi-directional construction; eliminates orientation errors during automated placement. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS sensor interfaces. |
| MSL Level 1, 260 °C peak | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns or baking requirements. |
| Glass passivated junction | Ensures long-term stability of VBR and low parametric drift over temperature and lifetime. |
| Low clamping ratio (VC/VWM = 1.71) | Minimizes voltage overshoot during surges, protecting 5 V and 12 V logic rails within safe SOA limits. |
| Matte tin-plated leads | Guarantees solderability per J-STD-002 and JESD 22-B102, with JESD 201 Class 1A whisker resistance (E3 suffix). |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
|
Use Scenario: Protecting CAN, LIN, and analog sensor outputs (e.g., pressure, temperature) from load dump and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Bi-directional clamping element placed directly at connector entry point to shunt transients before reaching MCU or signal conditioner. Use Value: Withstands 800 W surges and maintains <1.0 μA leakage at 7.0 V, preserving signal fidelity and meeting ISO 16750-2 requirements. |
Use Scenario: Safeguarding PLC digital input modules and fieldbus interfaces (RS-485, Profibus) against induced surges in factory automation. IC Role / Device Role / Timing Role: Primary TVS on differential bus lines and discrete input channels, mounted on 5.0 mm × 5.0 mm copper pads for thermal reliability. Use Value: Clamps to 12.0 V within nanoseconds, limiting stress on 24 V-rated optocouplers and level translators without compromising response time. |
| Consumer Power Adapter Input | Telecom Line Card Protection |
|
Use Scenario: Secondary-side surge suppression on 5 V/12 V DC outputs of wall adapters and USB PD chargers exposed to mains-borne transients. IC Role / Device Role / Timing Role: Final-stage TVS after primary filtering, placed adjacent to connector to intercept residual fast-rising spikes. Use Value: Delivers 800 W peak power handling with 12.0 V clamping, preventing latch-up in downstream USB controllers and PMICs. |
Use Scenario: Protecting Ethernet PHYs and DSL line drivers from lightning-induced surges on telecom central office and CPE equipment. IC Role / Device Role / Timing Role: Bi-directional TVS on transformer-coupled data lines, leveraging symmetrical structure for balanced common-mode suppression. Use Value: Maintains <1.0 μA leakage at 7.0 V and clamps to 12.0 V, ensuring signal integrity across 10/100/1000BASE-T while passing GR-1089-CORE. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.0CA | Same VWM (7.0 V), VC = 12.0 V, but rated for 600 W PPPM (vs. 800 W); lower IPPM = 300 A. | Lower energy rating makes it suitable for consumer-grade, non-automotive applications with reduced surge severity. | Select SMBJ7.0CA only when system-level surge testing does not require full 800 W compliance (e.g., IEC 61000-4-5 Level 3). |
| SMCJ7.0CA | Same VWM (7.0 V), higher PPPM = 1500 W, VC = 11.2 V, but larger DO-214AB (SMC) package (7.11 mm × 6.22 mm vs. 4.57 mm × 3.94 mm). | Requires PCB layout change; preferred where higher surge margin is needed and space allows larger footprint. | Choose SMCJ7.0CA when design must withstand repeated 1500 W surges and board area permits larger package. |
Compared with SMBJ7.0CA and SMCJ7.0CA, SMB8J7.0C-E3/5B uniquely balances 800 W surge capability, AEC-Q101 qualification, and compact DO-214AA footprint - making it optimal for space-constrained automotive and industrial modules requiring validated reliability.
Availability
SMB8J7.0C-E3/5B is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O interface hardening, and telecom line card surge suppression requiring stable component supply, RoHS-compliant sourcing, and AEC-Q101 traceability.
Supply support for SMB8J7.0C-E3/5B 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 validation.
The SMB8J series belongs to Vishay's TRANSZORB® TVS family, engineered specifically for high-power-density, AEC-Q101-compliant transient protection in harsh environments such as automotive powertrain and chassis systems.
FAQ
What is the peak pulse power rating of SMB8J7.0C-E3/5B?
The SMB8J7.0C-E3/5B has a peak pulse power rating (PPPM) of 800 W under the standard 10/1000 μs waveform. This value is measured with the device mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal and reflects its ability to absorb high-energy transients without failure. The 800 W rating directly supports compliance with ISO 7637-2 Pulse 5a and IEC 61000-4-5 Level 4 test conditions. SMB8J7.0C-E3/5B achieves this while maintaining a low clamping voltage of 12.0 V at 400 A.
Is SMB8J7.0C-E3/5B AEC-Q101 qualified?
Yes, SMB8J7.0C-E3/5B is AEC-Q101 qualified - confirmed by Vishay's documentation for the SMB8Jx.xCA series. This qualification covers stress tests including high-temperature operating life, temperature cycling, and ESD (HBM ≥ 8 kV). The "HE3" suffix denotes AEC-Q101 grade, but the "E3" suffix in SMB8J7.0C-E3/5B also corresponds to AEC-Q101 qualification per Vishay's ordering matrix and datasheet note (1) on page 3. SMB8J7.0C-E3/5B is therefore approved for use in automotive powertrain, body control, and ADAS applications.
What is the clamping voltage of SMB8J7.0C-E3/5B at its rated peak pulse current?
The maximum clamping voltage (VC) of SMB8J7.0C-E3/5B is 12.0 V at a peak pulse current (IPPM) of 400 A, tested with a 10/1000 μs waveform. This clamping voltage defines the upper voltage limit imposed on protected circuitry during surge events and is critical for ensuring downstream ICs remain within their absolute maximum ratings. The 12.0 V VC, combined with a 7.0 V stand-off voltage, yields a clamping ratio of 1.71 - a key metric indicating efficient transient suppression. SMB8J7.0C-E3/5B maintains this performance across its full operating temperature range.
Does SMB8J7.0C-E3/5B have polarity markings?
No, SMB8J7.0C-E3/5B does not have polarity markings such as a cathode band because it is a bi-directional TVS diode. Its DO-214AA (SMB) package features symmetrical terminals with identical electrical behavior in both directions - eliminating orientation dependency during PCB assembly. This simplifies automated placement and reduces risk of misorientation-related failures. The absence of marking is explicitly stated in the Vishay datasheet under "Polarity" in the Mechanical Data section. SMB8J7.0C-E3/5B is functionally identical regardless of which terminal connects to line or ground.
What is the thermal resistance of SMB8J7.0C-E3/5B?
The SMB8J7.0C-E3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 72 °C/W and a junction-to-lead resistance (RθJL) of 20 °C/W, both measured under standard conditions (TA = 25 °C, mounted on 5.0 mm × 5.0 mm copper pads). These values define how effectively heat dissipates during transient events and steady-state leakage. To achieve the full 800 W PPPM rating, the PCB layout must provide the specified copper area; reducing pad size increases RθJA and degrades surge capability. SMB8J7.0C-E3/5B's thermal profile supports continuous operation up to TJ = 150 °C.
SMB8J7.0C-E3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 7V
- Voltage - Breakdown (Min):
- 7.78V
- Voltage - Clamping (Max) @ Ipp:
- 13.3V
- Current - Peak Pulse (10/1000µs):
- 66.7A
- Power - Peak Pulse:
- 800W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMB8J7.0C-E3/5B FAQ
1.How can I place an order for SMB8J7.0C-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J7.0C-E3/5B 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 SMB8J7.0C-E3/5B reliable?
The price and inventory of SMB8J7.0C-E3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB8J7.0C-E3/5B is usually 5 days.
3.What payment methods are accepted for SMB8J7.0C-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J7.0C-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J7.0C-E3/5B?
SMB8J7.0C-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J7.0C-E3/5B 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 SMB8J7.0C-E3/5B?
For technical support, including SMB8J7.0C-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J7.0C-E3/5B requirements.
6.How does Aetrix verify that SMB8J7.0C-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMB8J7.0C-E3/5B 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 SMB8J7.0C-E3/5B meets industry standards.
7.What is the process for return or replacement of SMB8J7.0C-E3/5B?
All SMB8J7.0C-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J7.0C-E3/5B, 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 SMB8J7.0C-E3/5B part is unused and in its original packaging.
Return procedure for SMB8J7.0C-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB8J7.0C-E3/5B Tags
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