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Vishay General Semiconductor - Diodes Division SMB8J8.0C-E3/52
- Part No.:
- SMB8J8.0C-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J8.0C-E3/52.pdf
- Description:
- TVS DIODE 8VWM 15VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,216
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Product details
Overview
SMB8J8.0C-E3/52 from Vishay General Semiconductor is a bi-directional transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, designed for robust overvoltage protection on signal and power lines. It features 8.0 V stand-off voltage (VWM), 13.6 V maximum clamping voltage (VC) at 100 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 SMB8J8.0C-E3/52 datasheet, SMB8J8.0C-E3/52 pinout, SMB8J8.0C-E3/52 application, or SMB8J8.0C-E3/52 equivalent, key selection criteria include bi-directional clamping capability, AEC-Q101 qualification, low leakage (<1.0 µA at VWM), thermal resistance (RθJA = 72 °C/W), and compatibility with automated SMT assembly on 5.0 mm × 5.0 mm copper pads.
Technical Context
This bi-directional TVS operates symmetrically across both polarities, enabling protection of AC-coupled or differential signal paths without polarity constraints. Its glass-passivated junction ensures stable breakdown behavior and low incremental surge resistance under repetitive transients.
Designed per ANSI/IEEE C62.35 standards, it delivers sub-nanosecond response to ESD and lightning-induced surges while maintaining <1.0 µA reverse leakage at 8.0 V and clamping within 13.6 V at rated 100 A surge - critical for safeguarding 3.3 V and 5 V logic interfaces in harsh environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 8.0 V - Maximum continuous reverse operating voltage before clamping begins; defines safe interface voltage margin for 5 V systems. |
| VBR min/max | 8.89 V / 9.83 V at 1.0 mA - Verified breakdown threshold range ensures consistent turn-on across production lots. |
| VC @ IPPM | 13.6 V at 100 A - Clamping voltage under full-rated surge; limits downstream IC stress to safe levels during ISO 7637-2 Pulse 1/2/5a events. |
| PPPM | 800 W (10/1000 µs) - Peak surge energy handling capacity; supports automotive load-dump immunity up to Level III. |
| ID @ VWM | <1.0 µA - Ultra-low leakage preserves signal integrity and battery life in always-on sensor nodes. |
| TJ max | 150 °C - Enables operation in under-hood automotive locations and industrial enclosures without derating. |
| RθJA | 72 °C/W - Thermal resistance measured on 0.2" × 0.2" copper pads; informs board-level thermal design for sustained surge duty cycles. |
Pinout & Package
DO-214AA (SMB) surface-mount package: molded epoxy case meeting UL 94 V-0, matte tin-plated leads solderable per J-STD-002, no polarity marking (bi-directional).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional surge conduction path | No functional distinction between terminals; either side connects to protected line, other to ground or reference plane. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, ADAS sensors, and body electronics per stress test requirements. |
| 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 leakage under temperature cycling and humidity exposure. |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes let-through voltage during surge events - critical for protecting 3.3 V and 5 V logic rails with tight margins. |
| Bi-directional symmetry | Eliminates need for polarity-aware layout; simplifies PCB routing for differential buses like CAN, RS-485, and audio lines. |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting LIN bus transceivers and pressure/temperature sensor outputs from load dump and inductive switching transients in vehicle cabins. IC Role / Device Role / Timing Role: Bi-directional TVS clamp placed between sensor signal line and chassis ground, responding within <1 ns to suppress >100 V spikes. Use Value: Prevents latch-up or permanent damage to 5 V analog front-end ICs while maintaining signal fidelity below 8.0 V operating range. |
Use Scenario: Shielding PLC analog input channels (4–20 mA, 0–10 V) from field wiring surges caused by motor contactor switching or lightning coupling. IC Role / Device Role / Timing Role: Primary overvoltage clamp on terminal block inputs, coordinated with series current-limiting resistors and filtering capacitors. Use Value: Limits transient voltage to ≤13.6 V during 800 W surges, preserving ADC accuracy and isolator integrity in Class I explosion-proof zones. |
| Consumer USB Port Protection | Telecom Line Interface |
Use Scenario: Safeguarding USB 2.0 D+/D− lines in set-top boxes and smart home hubs against ESD (±15 kV air, ±8 kV contact) and cable discharge events. IC Role / Device Role / Timing Role: Bi-directional TVS placed directly at USB connector, shunting ESD current before reaching USB PHY transceiver. Use Value: Achieves <1.0 µA leakage at 5.0 V VWM to avoid signal attenuation, while clamping ESD pulses to <13.6 V within nanoseconds. |
Use Scenario: Protecting Ethernet PHY magnetics and POTS line drivers in VoIP gateways from induced surges on telephone line pairs. IC Role / Device Role / Timing Role: Paired bi-directional TVS devices across tip/ring lines referenced to common-mode ground, handling longitudinal surges. Use Value: Withstands repeated 10/1000 µs surges up to 800 W without parameter shift - validated for GR-1089-CORE compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ8.0CA | Same VWM (8.0 V), identical DO-214AA package, but rated for 600 W PPPM (vs. 800 W) and 73.5 A IPPM (vs. 100 A). | Limited to lower-energy transients (e.g., IEC 61000-4-2 ESD only); not recommended for ISO 7637-2 Pulse 5a load dump. | Select SMBJ8.0CA only when surge energy demand is ≤600 W and cost optimization outweighs headroom requirements. |
| SMCJ8.0CA | Same VWM (8.0 V) and bi-directionality, but larger DO-214AB (SMC) package with 1500 W PPPM rating and 169 A IPPM. | Requires larger PCB footprint and higher thermal mass; suited for high-reliability power rail protection where space permits. | Choose SMCJ8.0CA when system-level surge testing exceeds 800 W or when extended thermal dissipation is needed for repetitive events. |
Compared with SMBJ8.0CA and SMCJ8.0CA, SMB8J8.0C-E3/52 delivers optimal balance of 800 W surge capacity, AEC-Q101 qualification, and compact SMB footprint - making it the preferred choice for space-constrained automotive and industrial modules requiring certified reliability.
Availability
SMB8J8.0C-E3/52 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O protection, and telecom line interface designs requiring stable component supply, RoHS-compliant sourcing, and AEC-Q101 validation.
Supply support for SMB8J8.0C-E3/52 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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, automotive qualification, and high-power density packaging.
The SMB8J series belongs to Vishay's TRANSZORB® TVS family, engineered specifically for high-energy transient suppression in automotive, industrial, and communications infrastructure where AEC-Q101 compliance and precise clamping performance are mandatory.
FAQ
What is the polarity configuration of SMB8J8.0C-E3/52?
SMB8J8.0C-E3/52 is a bi-directional TVS diode with symmetrical anode/cathode terminals and no polarity marking on the DO-214AA package. It provides identical clamping behavior for positive and negative transients, making it ideal for AC-coupled or differential signal lines such as CAN, RS-485, and audio interfaces without requiring orientation-specific placement.
Is SMB8J8.0C-E3/52 qualified for automotive use?
Yes, SMB8J8.0C-E3/52 is AEC-Q101 qualified per the Vishay datasheet (Document Number: 88422, Revision: 12-Nov-12). This certification covers stress tests including high-temperature operating life, temperature cycling, and ESD - confirming its suitability for under-hood and cabin electronics in passenger vehicles and commercial fleets.
What is the maximum clamping voltage of SMB8J8.0C-E3/52 under surge conditions?
The maximum clamping voltage (VC) of SMB8J8.0C-E3/52 is 13.6 V at 100 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is guaranteed across temperature and production lot variations, ensuring predictable overvoltage limiting for downstream 5 V and 3.3 V ICs during standardized surge events like ISO 7637-2 Pulse 5a.
Does SMB8J8.0C-E3/52 meet lead-free soldering requirements?
Yes, SMB8J8.0C-E3/52 carries the "E3" suffix indicating RoHS-compliance and qualification for lead-free reflow soldering. It meets MSL Level 1 per J-STD-020 with a maximum peak temperature of 260 °C, eliminating the need for pre-baking and supporting compatibility with standard Pb-free assembly processes.
How does SMB8J8.0C-E3/52 differ from uni-directional variants like SMB10J8.0A?
SMB8J8.0C-E3/52 is bi-directional with symmetric clamping and no cathode band, whereas SMB10J8.0A is uni-directional with a marked cathode end and higher 1000 W PPPM rating. The bi-directional nature of SMB8J8.0C-E3/52 enables protection of AC signals and eliminates polarity errors in layout, while SMB10J8.0A suits DC power rail applications where unidirectional surge direction is known and higher energy handling is required.
SMB8J8.0C-E3/52 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):
- 8V
- Voltage - Breakdown (Min):
- 8.89V
- Voltage - Clamping (Max) @ Ipp:
- 15V
- Current - Peak Pulse (10/1000µs):
- 53.3A
- 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)
SMB8J8.0C-E3/52 FAQ
1.How can I place an order for SMB8J8.0C-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J8.0C-E3/52 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 SMB8J8.0C-E3/52 reliable?
The price and inventory of SMB8J8.0C-E3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB8J8.0C-E3/52 is usually 5 days.
3.What payment methods are accepted for SMB8J8.0C-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J8.0C-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J8.0C-E3/52?
SMB8J8.0C-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J8.0C-E3/52 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 SMB8J8.0C-E3/52?
For technical support, including SMB8J8.0C-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J8.0C-E3/52 requirements.
6.How does Aetrix verify that SMB8J8.0C-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMB8J8.0C-E3/52 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 SMB8J8.0C-E3/52 meets industry standards.
7.What is the process for return or replacement of SMB8J8.0C-E3/52?
All SMB8J8.0C-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J8.0C-E3/52, 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 SMB8J8.0C-E3/52 part is unused and in its original packaging.
Return procedure for SMB8J8.0C-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB8J8.0C-E3/52 Tags
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