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Vishay General Semiconductor - Diodes Division SMB8J7.0CHE3/52
- Part No.:
- SMB8J7.0CHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J7.0CHE3/52.pdf
- Description:
- TVS DIODE 7VWM 13.3VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,416
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Product details
Overview
SMB8J7.0CHE3/52 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 clamping voltage (VC) at 400 A peak pulse current (IPPM), and 800 W peak pulse power (PPPM) with 10/1000 µs waveform. Used in automotive sensor interfaces and industrial I/O protection where AEC-Q101 qualification and low clamping ratio are critical.
For engineers reviewing the SMB8J7.0CHE3/52 datasheet, SMB8J7.0CHE3/52 pinout, SMB8J7.0CHE3/52 application, or SMB8J7.0CHE3/52 equivalent, this page delivers verified electrical specs, AEC-Q101 qualification status, thermal resistance (RθJA = 72 °C/W), clamping performance under 10/1000 µs transients, and bi-directional polarity configuration - all essential for ESD/surge co-design in harsh-environment electronics.
Technical Context
This bi-directional TVS operates symmetrically across both polarities, enabling robust protection of AC-coupled or differential signal paths without polarity constraints. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1.0 µA at VWM), while the DO-214AA package supports automated SMT placement and meets MSL level 1 (260 °C reflow).
The device complies with ANSI/IEEE C62.35 surge standards and delivers 800 W peak pulse power handling with 12.0 V clamping at 400 A - achieving a clamping ratio (VC/VWM) of 1.71 - optimized for protecting 5–7 V logic interfaces and automotive CAN/LIN bus nodes against ISO 7637-2 pulses.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.0 V - maximum continuous reverse operating voltage before conduction begins; defines safe operating margin for 5 V or 7 V rail protection. |
| VBR (min/max) | 7.78 V / 8.60 V at 10 mA - guaranteed breakdown onset range; ensures reliable triggering above normal operating voltage. |
| VC @ IPPM | 12.0 V at 400 A (10/1000 µs) - clamping voltage limits downstream IC stress during surge events; enables compatibility with 13.5 V tolerant receivers. |
| PPPM | 800 W - peak pulse power rating per 10/1000 µs waveform; supports IEC 61000-4-5 Level 3 (1 kV/2 Ω) surge immunity. |
| ID @ VWM | <1.0 µA - ultra-low reverse leakage preserves signal integrity and battery life in always-on sensor circuits. |
| RθJA | 72 °C/W - junction-to-ambient thermal resistance; informs derating requirements for sustained power dissipation in enclosed enclosures. |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD47. |
Pinout & Package
Package: DO-214AA (SMB), surface-mount, bi-directional configuration with no polarity marking - symmetrical terminals enable unambiguous PCB layout for AC or differential line protection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional surge path | Either terminal serves as anode or cathode depending on transient polarity; eliminates orientation sensitivity during assembly. |
| Cathode Band (absent) | Polarity indicator | Not present - confirms bi-directional construction; no marking required per datasheet specification for SMB8JxxCA series. |
Key Features
| Feature | Design Value |
|---|---|
| Bi-directional architecture | Enables single-device protection of AC signals, differential buses (e.g., RS-485, CAN), or ungrounded inputs without polarity concerns. |
| AEC-Q101 qualification | Validated for automotive applications including engine control modules, body electronics, and ADAS sensor interfaces per stress test requirements. |
| Glass-passivated junction | Ensures stable VBR over lifetime and temperature, minimizing parameter drift in industrial environments with thermal cycling. |
| MSL Level 1 (260 °C) | Supports standard lead-free reflow profiles without moisture sensitivity concerns; eliminates bake requirements pre-assembly. |
| UL 94 V-0 molding compound | Provides flame-retardant encapsulation meeting safety standards for enclosed industrial and automotive housings. |
Applications
| Automotive Sensor Interface | Industrial RS-485 Bus |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine bay environments exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bi-directional TVS placed between sensor output and microcontroller ADC input to clamp transients before signal conditioning circuitry. Use Value: 12.0 V clamping ensures ADC input stays within absolute maximum rating (typically 13.5 V) during 100 V/50 ms load dump events. |
Use Scenario: Shielding RS-485 transceiver I/O pins in factory automation PLCs subjected to long cable-induced surges and ground potential differences. IC Role / Device Role / Timing Role: Paired TVS devices on A/B lines to suppress common-mode and differential-mode transients up to 800 W per line. Use Value: Symmetrical clamping maintains differential signal integrity while limiting voltage excursion to ±12.0 V relative to ground. |
| Consumer USB-C Port | Smart Meter Communication Module |
Use Scenario: Safeguarding USB-C CC and VCONN lines against ESD and hot-plug induced transients in portable chargers and docks. IC Role / Device Role / Timing Role: Low-capacitance bi-directional TVS placed directly at connector to shunt fast transients before USB PD controller. Use Value: Sub-1 µA leakage at 7.0 V prevents interference with 5 V VCONN biasing and maintains USB PD negotiation stability. |
Use Scenario: Protecting HPLC (HomePlug AV) or NB-IoT modem interfaces in utility smart meters installed in electrically noisy substations. IC Role / Device Role / Timing Role: Primary surge suppression on AC-coupled communication lines interfacing with external powerline or cellular antennas. Use Value: 800 W PPPM rating handles repeated 6 kV/42 Ω surges per IEC 61000-4-5, extending field lifetime beyond 10 years. |
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) and VC (12.0 V), but lower PPPM (600 W) and IPPM (333 A); non-AEC-Q101 rated. | Limited to commercial-grade consumer or computing applications; not qualified for automotive underhood use. | Select when cost sensitivity outweighs automotive qualification and 800 W surge headroom is unnecessary. |
| SMCJ7.0CA | Same VWM/VC, but higher PPPM (1500 W) and larger DO-214AB (SMC) package; RθJA = 35 °C/W. | Requires more PCB area; better suited for high-power industrial motor drives where thermal mass matters more than footprint. | Choose when system-level surge tests exceed 800 W or ambient temperatures exceed 85 °C with limited airflow. |
Compared with SMBJ7.0CA, SMB8J7.0CHE3/52 provides +33 % peak power headroom and automotive qualification; versus SMCJ7.0CA, it trades 44 % smaller footprint for 48 % higher thermal resistance - making it optimal for space-constrained AEC-Q101 designs needing 800 W protection.
Availability
SMB8J7.0CHE3/52 is available at Aetrix Electronics and suitable for automotive sensor protection, industrial RS-485 networks, and smart meter communication modules requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMB8J7.0CHE3/52 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 application-specific performance.
The SMB8JxxCA series targets high-reliability transient suppression in automotive and industrial systems, engineered to meet AEC-Q101 and IEC 61000-4-5 requirements while maintaining compact DO-214AA packaging.
FAQ
What is the clamping voltage of SMB8J7.0CHE3/52 at its rated peak pulse current?
The SMB8J7.0CHE3/52 has a maximum clamping voltage (VC) of 12.0 V when subjected to its rated peak pulse current of 400 A with a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and confirmed in the Vishay datasheet revision 12-Nov-12, ensuring predictable voltage limiting during surge events. The SMB8J7.0CHE3/52 maintains this clamping performance across its qualified operating temperature range.
Is SMB8J7.0CHE3/52 suitable for automotive applications?
Yes, SMB8J7.0CHE3/52 is AEC-Q101 qualified, meaning it has passed rigorous stress tests including temperature cycling, highly accelerated life testing (HALT), and ESD validation per JESD47. Its bi-directional design, 7.0 V stand-off, and 12.0 V clamping make it appropriate for protecting automotive sensor outputs, LIN bus nodes, and infotainment I/O lines. The SMB8J7.0CHE3/52 HE3 suffix explicitly denotes AEC-Q101 compliance.
What does the 'HE3/52' suffix mean in SMB8J7.0CHE3/52?
The 'HE3' suffix indicates RoHS-compliant construction with AEC-Q101 qualification and JESD201 Class 2 whisker resistance; '52' denotes packaging in 7" diameter plastic tape and reel with 750 units per reel. This ordering code aligns with Vishay's standardized nomenclature for automotive-grade DO-214AA TVS diodes. The SMB8J7.0CHE3/52 part number uniquely identifies this specific configuration and qualification level.
How does SMB8J7.0CHE3/52 differ from uni-directional SMB10J7.0A?
SMB8J7.0CHE3/52 is bi-directional with symmetrical breakdown and no cathode band, while SMB10J7.0A is uni-directional with a marked cathode and forward conduction capability. SMB8J7.0CHE3/52 offers 800 W PPPM and 400 A IPPM, whereas SMB10J7.0A delivers 1000 W PPPM and 83.3 A IPPM - reflecting different surge energy priorities. The SMB8J7.0CHE3/52 is optimized for AC/differential line protection; SMB10J7.0A suits DC rail clamping where forward surge current matters.
What is the thermal resistance of SMB8J7.0CHE3/52, and how does it affect layout?
The SMB8J7.0CHE3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 72 °C/W when mounted on 0.2" × 0.2" copper pads per terminal. This value requires careful PCB layout: minimum 5.0 mm × 5.0 mm copper pour per pad is recommended to maintain thermal performance. Higher ambient temperatures or reduced copper area will increase junction temperature, potentially derating peak pulse capability per Figure 2 in the Vishay datasheet. The SMB8J7.0CHE3/52 thermal profile supports operation up to 150 °C junction temperature.
SMB8J7.0CHE3/52 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMB8J7.0CHE3/52 FAQ
1.How can I place an order for SMB8J7.0CHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J7.0CHE3/52 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 SMB8J7.0CHE3/52 reliable?
The price and inventory of SMB8J7.0CHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB8J7.0CHE3/52 is usually 5 days.
3.What payment methods are accepted for SMB8J7.0CHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J7.0CHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J7.0CHE3/52?
SMB8J7.0CHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J7.0CHE3/52 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 SMB8J7.0CHE3/52?
For technical support, including SMB8J7.0CHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J7.0CHE3/52 requirements.
6.How does Aetrix verify that SMB8J7.0CHE3/52 is sourced from the original manufacturer or authorized distributors?
All SMB8J7.0CHE3/52 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 SMB8J7.0CHE3/52 meets industry standards.
7.What is the process for return or replacement of SMB8J7.0CHE3/52?
All SMB8J7.0CHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J7.0CHE3/52, 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 SMB8J7.0CHE3/52 part is unused and in its original packaging.
Return procedure for SMB8J7.0CHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB8J7.0CHE3/52 Tags
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