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Vishay General Semiconductor - Diodes Division SMB8J5.0CA-E3/5B
- Part No.:
- SMB8J5.0CA-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J5.0CA-E3/5B.pdf
- Description:
- TVS DIODE 5VWM 9.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,499
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Product details
Overview
SMB8J5.0CA-E3/5B from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for high-energy surge protection on signal and power lines. It features a 5.0 V stand-off voltage (VWM), 6.4–7.25 V breakdown voltage (VBR) at 10 mA, 9.2 V maximum clamping voltage (VC) at 2000 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 SMB8J5.0CA-E3/5B datasheet, SMB8J5.0CA-E3/5B pinout, SMB8J5.0CA-E3/5B application, or SMB8J5.0CA-E3/5B equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, low clamping ratio (VC/VWM ≈ 1.84), MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector, responding within <1 ps to transients induced by inductive switching or ESD events. Its glass-passivated junction ensures stable VBR tolerance (±10% typical), while low incremental surge resistance enables effective energy diversion without thermal runaway under repetitive surges.
The device complies with ANSI/IEEE C62.35 for surge immunity testing and is rated for -55 °C to +150 °C operating junction temperature. Its bidirectional symmetry eliminates polarity concerns in AC-coupled or differential signal paths, and its 20 °C/W junction-to-lead thermal resistance supports reliable power dissipation during transient events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 5.0 V - Maximum continuous reverse voltage before significant leakage; defines safe operating margin below clamping threshold |
| VBR min/max | 6.40 V / 7.25 V at 10 mA - Ensures consistent turn-on across production lots; guarantees clamping initiates above normal signal swing |
| VC @ IPPM | 9.2 V at 2000 A - Limits protected circuit voltage during worst-case 10/1000 µs surge; clamping ratio = 1.84× VWM |
| PPPM | 800 W - Sustains standardized lightning-surge energy (IEC 61000-4-5) without failure when mounted per recommended pad layout |
| ID @ VWM | 2000 μA max - Low leakage preserves signal integrity in high-impedance sensor or communication lines |
| TJ max | +150 °C - Enables use in under-hood automotive environments and thermally constrained industrial enclosures |
| MSL Level | Level 1 (260 °C peak reflow) - Supports standard lead-free SMT assembly without pre-baking |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional - no polarity marking; symmetrical two-terminal construction with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient current path | Both terminals function identically; bidirectional conduction allows placement without orientation check in AC or differential lines |
| Case (body) | Thermal and mechanical interface | Plastic body provides UL 94 V-0 flammability rating; copper pad mounting (0.2" × 0.2") required for rated PPPM performance |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics including engine control modules and ADAS sensor interfaces |
| Glass passivated junction | Ensures long-term VBR stability and reduced parameter drift over temperature and life cycles |
| Low clamping voltage (9.2 V) | Protects 5 V logic and microcontroller I/O pins without exceeding absolute maximum ratings |
| MSL Level 1 rating | Enables direct placement into high-volume SMT lines without moisture-sensitive handling protocols |
| 800 W peak pulse power | Meets IEC 61000-4-5 Level 4 (4 kV line-to-earth) surge immunity requirements |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load-dump and jump-start transients in vehicle ECUs. IC Role / Device Role: Bidirectional shunt clamp placed directly at connector entry point to limit voltage seen by downstream PHY and MCU pins. Use Value: Prevents latch-up or gate oxide damage in 5 V tolerant interfaces while maintaining signal fidelity due to low capacitance (<100 pF at 0 V). | Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to inductive kickback from solenoids and contactors. IC Role / Device Role: Primary surge suppression on 24 V DC field wiring before optocoupler or level-shifter input stages. Use Value: Absorbs 800 W surges without degradation, enabling >100,000 surge cycles per MIL-STD-883H Method 3015.7. |
| USB Port ESD Protection | Telecom Line Interface |
Use Scenario: Secondary-level ESD protection on USB 2.0 data lines (D+/D−) in embedded host devices subjected to IEC 61000-4-2 ±15 kV contact discharge. IC Role / Device Role: Fast-response clamping element placed after common-mode choke to suppress differential-mode transients. Use Value: Clamps sub-1 ns ESD events to <9.2 V within 100 ps, preserving eye diagram integrity and preventing PHY reset. | Use Scenario: Overvoltage protection on POTS or VoIP line interface circuits exposed to lightning-induced surges on twisted-pair telecom lines. IC Role / Device Role: First-stage protector on tip/ring lines before hybrid transformer and SLIC IC. Use Value: Withstands repeated 10/1000 µs surges up to 2000 A, meeting GR-1089-CORE Zone 3 requirements for central office equipment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ5.0CA-E3/5B | 1000 W PPPM (unidirectional variant); same VWM/VBR/VC but lower IPPM rating (1000 A vs. 2000 A) | Not rated for bidirectional 800 W surges; limited to unidirectional DC rails | Select only for cost-sensitive non-automotive DC supply rail protection where 1000 A surge capacity suffices |
| SMCJ5.0CA-E3/5B | Larger SMC (DO-214AB) package; identical electrical specs but higher thermal mass and 1500 W PPPM rating | Requires larger PCB footprint; better suited for high-reliability industrial power inputs | Choose when board space permits and higher surge endurance (>100,000 cycles) is required in harsh environments |
Compared with SMBJ5.0CA-E3/5B and SMCJ5.0CA-E3/5B, SMB8J5.0CA-E3/5B uniquely delivers 2000 A bidirectional surge capability in the compact SMB footprint while maintaining AEC-Q101 qualification - making it optimal for space-constrained automotive and portable industrial designs requiring full AC-line robustness.
Availability
SMB8J5.0CA-E3/5B is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, USB port protection, and telecom line interface circuits requiring stable component supply, RoHS compliance, and AEC-Q101 validation.
Supply support for SMB8J5.0CA-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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, power density, and automotive-grade qualification.
The SMB8J series is part of Vishay's TRANSZORB® TVS platform engineered specifically for high-energy bidirectional surge suppression in automotive, industrial, and telecom infrastructure - balancing low clamping voltage, fast response, and AEC-Q101 compliance in miniaturized packages.
FAQ
What is the clamping voltage of SMB8J5.0CA-E3/5B at its rated peak pulse current?
The SMB8J5.0CA-E3/5B has a maximum clamping voltage (VC) of 9.2 V when subjected to its rated 2000 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is measured under standardized test conditions per ANSI/IEEE C62.35 and confirms the device limits transient overvoltage to a safe level for 5 V logic systems. The SMB8J5.0CA-E3/5B achieves this while maintaining low incremental resistance, ensuring predictable and repeatable protection behavior across temperature and lifetime.
Is SMB8J5.0CA-E3/5B suitable for automotive applications?
Yes, SMB8J5.0CA-E3/5B is AEC-Q101 qualified and explicitly rated for automotive use, including engine control units, ADAS sensors, and infotainment interfaces. Its -55 °C to +150 °C operating range, MSL Level 1 reflow compatibility, and validated surge endurance meet stringent OEM requirements. The SMB8J5.0CA-E3/5B also carries the HE3 suffix variant for full automotive traceability - confirming its suitability for safety-critical vehicle subsystems.
How does SMB8J5.0CA-E3/5B differ from unidirectional SMBJ5.0A variants?
SMB8J5.0CA-E3/5B is bidirectional with symmetric clamping in both polarities, whereas SMBJ5.0A is unidirectional and conducts only in reverse bias. The SMB8J5.0CA-E3/5B supports AC-coupled lines like USB D+/D− or telecom tip/ring without polarity constraints, offers 2000 A IPPM (vs. 1000 A for SMBJ5.0A), and is rated for 800 W PPPM. The SMB8J5.0CA-E3/5B also features tighter VBR consistency (6.40–7.25 V) and is AEC-Q101 qualified - unlike many SMBJ variants.
What is the maximum reverse leakage current for SMB8J5.0CA-E3/5B at its stand-off voltage?
At its 5.0 V stand-off voltage (VWM), the SMB8J5.0CA-E3/5B exhibits a maximum reverse leakage current (ID) of 2000 μA at 25 °C. This value is specified in the Vishay datasheet (Document Number: 88422, page 3) and reflects worst-case leakage under nominal conditions. The SMB8J5.0CA-E3/5B maintains this low leakage to avoid loading high-impedance sensor outputs or battery-powered circuits, supporting precision analog and low-power IoT designs.
Does SMB8J5.0CA-E3/5B require special PCB layout considerations?
Yes - the SMB8J5.0CA-E3/5B must be mounted on minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve its rated 800 W peak pulse power. Smaller pads cause thermal derating and premature failure under surge. The SMB8J5.0CA-E3/5B also requires short, low-inductance traces to the protected node and ground plane, and should be placed as close as possible to the connector or IC pin being protected to minimize parasitic inductance that could elevate clamping voltage.
SMB8J5.0CA-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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 5V
- Voltage - Breakdown (Min):
- 6.4V
- Voltage - Clamping (Max) @ Ipp:
- 9.2V
- Current - Peak Pulse (10/1000µs):
- 87A
- 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)
SMB8J5.0CA-E3/5B FAQ
1.How can I place an order for SMB8J5.0CA-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J5.0CA-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 SMB8J5.0CA-E3/5B reliable?
The price and inventory of SMB8J5.0CA-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 SMB8J5.0CA-E3/5B is usually 5 days.
3.What payment methods are accepted for SMB8J5.0CA-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J5.0CA-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J5.0CA-E3/5B?
SMB8J5.0CA-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J5.0CA-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 SMB8J5.0CA-E3/5B?
For technical support, including SMB8J5.0CA-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J5.0CA-E3/5B requirements.
6.How does Aetrix verify that SMB8J5.0CA-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMB8J5.0CA-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 SMB8J5.0CA-E3/5B meets industry standards.
7.What is the process for return or replacement of SMB8J5.0CA-E3/5B?
All SMB8J5.0CA-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J5.0CA-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 SMB8J5.0CA-E3/5B part is unused and in its original packaging.
Return procedure for SMB8J5.0CA-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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