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Vishay General Semiconductor - Diodes Division SMBJ5.0CA-E3/51
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- Part No.:
- SMBJ5.0CA-E3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ5.0CA-E3/51.pdf
- Description:
- TVS DIODE 5VWM 9.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,363
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Product details
Overview
SMBJ5.0CA-E3/51 from Vishay General Semiconductor is a bi-directional transient voltage suppressor (TVS) diode in DO-214AA (SMBJ) package, designed for clamping voltage transients on signal or power lines. It features a 5.0 V stand-off voltage (VWM), 6.4–7.07 V breakdown voltage (VBR) at 10 mA, 600 W peak pulse power (10/1000 μs), 9.2 V maximum clamping voltage (VC) at 65.2 A IPPM, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SMBJ5.0CA-E3/51 datasheet, SMBJ5.0CA-E3/51 pinout, SMBJ5.0CA-E3/51 application, or SMBJ5.0CA-E3/51 equivalent, key selection criteria include bi-directional clamping capability, low clamping ratio (VC/VWM ≈ 1.84), MSL Level 1 moisture sensitivity, RoHS-compliant matte tin terminations, and suitability for I/O protection in automotive sensor interfaces, industrial PLC inputs, and telecom line receivers.
Technical Context
This bi-directional TVS operates symmetrically across both polarities, with identical electrical characteristics in forward and reverse directions. Its glass-passivated junction enables fast response time (<1 ns), low incremental surge resistance, and stable clamping under repetitive 0.01% duty cycle surges.
The device is rated for -55 °C to +150 °C operating junction temperature, uses a DO-214AA package with 0.2" × 0.2" copper pad thermal layout, and meets UL 94 V-0 flammability requirements. It is not intended for DC blocking or rectification - its sole function is transient energy diversion via avalanche breakdown.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 5.0 V - Maximum continuous reverse voltage before significant leakage; defines safe operating margin below breakdown |
| VBR min/max | 6.4 V / 7.07 V at 10 mA - Ensures reliable turn-on within tight tolerance during ESD or surge events |
| VC @ IPPM | 9.2 V at 65.2 A - Clamped voltage seen by protected circuit during 600 W transient; limits stress on downstream ICs |
| PPPM | 600 W (10/1000 μs) - Sustains high-energy transients common in automotive load-dump or inductive switching |
| ID @ VWM | 800 μA max - Low leakage preserves signal integrity and power efficiency in always-on circuits |
| TJ max | +150 °C - Enables use in under-hood automotive environments and thermally constrained industrial enclosures |
| Qualification | AEC-Q101 qualified - Validated for automotive electronics per stress test requirements including HTGB, HTRB, and TCT |
Pinout & Package
DO-214AA (SMBJ) surface-mount package with gull-wing leads; no polarity marking for bi-directional types; terminals are matte tin plated, solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional avalanche junction | Either terminal serves as cathode or anode depending on transient polarity; no fixed polarity required in PCB layout |
| Case (body) | Non-electrical mechanical interface | Thermally coupled to PCB copper pads (0.2" × 0.2") for effective heat dissipation during surge events |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Withstands high-energy transients from inductive load switching without degradation |
| Clamping ratio VC/VWM = 1.84 | Minimizes overvoltage stress on protected ICs compared to higher-ratio alternatives |
| AEC-Q101 qualification | Validated for automotive applications including engine control units and ADAS sensor interfaces |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without baking or special handling |
| Glass passivated junction | Ensures long-term stability of breakdown voltage and leakage current under thermal cycling |
Applications
| Automotive Sensor Protection | Industrial PLC Input Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from ISO 7637-2 pulse 1/2a/5a transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bi-directional voltage clamp placed between signal line and ground, responding within <1 ns to divert surge current away from sensitive input stages. Use Value: Maintains signal integrity during 100 V/500 ms load dump events while limiting clamped voltage to ≤9.2 V at 65.2 A peak current. | Use Scenario: Safeguarding 24 V digital input modules in programmable logic controllers against field-wiring induced surges and relay contact bounce. IC Role / Device Role / Timing Role: Standoff protector across input terminals, conducting only during transient overvoltage exceeding 5.0 V, with minimal leakage (<800 μA) during normal operation. Use Value: Prevents false triggering and latch-up in optocoupler input stages while supporting continuous 24 V DC operation with no derating. |
| Telecom Line Receiver Protection | Consumer USB Port ESD Protection |
Use Scenario: Shielding RS-485/RS-422 receiver inputs in base station equipment from lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Primary surge suppression element placed before TVS array or integrated protection IC, absorbing bulk transient energy before secondary clamping. Use Value: Handles 600 W pulses without failure, enabling robust front-end protection compliant with ITU-T K.20/21 standards. | Use Scenario: Adding board-level ESD immunity to USB 2.0 data lines (D+/D−) in set-top boxes and smart displays exposed to human-body-model (HBM) discharges. IC Role / Device Role / Timing Role: Fast-response bi-directional clamp shunting ±8 kV HBM transients directly to ground, minimizing voltage overshoot on differential pairs. Use Value: Achieves <9.2 V clamping at 65.2 A, well below USB PHY damage thresholds, with no signal distortion due to low capacitance (<100 pF typical). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ5.0CAHE3/51 | AEC-Q101 qualified version with identical electrical specs; HE3 suffix denotes whisker-test class 2 compliance | Required for automotive production programs demanding full AEC-Q101 traceability and extended reliability testing | Select SMBJ5.0CAHE3/51 when automotive PPAP documentation and accelerated life test reports are mandatory |
| SMCJ5.0CA-E3/57 | Higher 1500 W PPPM rating in larger DO-214AB (SMC) package; same VWM/VBR/VC specs | Suitable for systems requiring higher surge margin (e.g., industrial motor drives) where PCB space allows larger footprint | Choose SMCJ5.0CA-E3/57 only if 1500 W surge handling is needed and DO-214AB package is acceptable |
Compared with SMBJ5.0CA-E3/51, the HE3 variant adds full AEC-Q101 certification documentation without electrical change, while the SMCJ5.0CA-E3/57 trades compactness for 2.5× higher surge capacity - neither is pin-compatible due to different package outlines, but both serve overlapping protection functions in distinct mechanical contexts.
Availability
SMBJ5.0CA-E3/51 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC inputs, and telecom line receivers requiring stable component supply, RoHS compliance, and AEC-Q101 traceability.
Supply support for SMBJ5.0CA-E3/51 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 qualification.
The SMBJ series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-reliability transient suppression in harsh environments including automotive, industrial automation, and telecommunications infrastructure.
FAQ
What is the maximum clamping voltage of SMBJ5.0CA-E3/51 under surge conditions?
The SMBJ5.0CA-E3/51 has a maximum clamping voltage (VC) of 9.2 V at 65.2 A peak pulse current (IPPM), measured with a 10/1000 μs waveform. This value represents the highest voltage imposed on the protected circuit during a 600 W transient event, ensuring downstream ICs remain within safe operating limits. The clamping performance is guaranteed across the full operating temperature range (-55 °C to +150 °C).
Is SMBJ5.0CA-E3/51 suitable for automotive applications?
Yes, SMBJ5.0CA-E3/51 is AEC-Q101 qualified and explicitly rated for automotive use. Its construction includes glass-passivated junctions, MSL Level 1 reflow compatibility, and validation across high-temperature storage, biased high-temperature operating life, and temperature cycling tests. It is commonly deployed in engine control units, body electronics, and ADAS sensor interfaces where robust transient immunity is required.
How does the bi-directional design of SMBJ5.0CA-E3/51 affect PCB layout?
The bi-directional nature of SMBJ5.0CA-E3/51 eliminates polarity constraints in PCB layout - either terminal may connect to signal or ground without functional impact. Unlike uni-directional TVS diodes, it requires no cathode band orientation check during placement, simplifying automated assembly and reducing risk of misorientation-related failures. The DO-214AA package has symmetrical gull-wing leads optimized for standard SMT pick-and-place.
What is the leakage current specification for SMBJ5.0CA-E3/51 at its stand-off voltage?
At the 5.0 V stand-off voltage (VWM), SMBJ5.0CA-E3/51 exhibits a maximum reverse leakage current (ID) of 800 μA at 25 °C. This low leakage ensures minimal power loss and signal loading in always-on circuits such as sensor bias networks or communication line terminations, preserving accuracy and battery life in low-power systems.
Does SMBJ5.0CA-E3/51 require external heat sinking for 600 W surge handling?
No external heat sink is required for single-event 600 W surge handling, as the SMBJ5.0CA-E3/51 relies on short-duration pulse dissipation into PCB copper. The datasheet specifies mounting on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve adequate thermal conduction. Continuous power dissipation is not applicable - the device is rated for non-repetitive pulses with 0.01% duty cycle, making heatsinking unnecessary for standard transient suppression use cases.
SMBJ5.0CA-E3/51 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Bulk
- Product Status:
- Obsolete
- 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):
- 65.2A
- Power - Peak Pulse:
- 600W
- 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 (SMBJ)
SMBJ5.0CA-E3/51 FAQ
1.How can I place an order for SMBJ5.0CA-E3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ5.0CA-E3/51 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 SMBJ5.0CA-E3/51 reliable?
The price and inventory of SMBJ5.0CA-E3/51 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ5.0CA-E3/51 is usually 5 days.
3.What payment methods are accepted for SMBJ5.0CA-E3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ5.0CA-E3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ5.0CA-E3/51?
SMBJ5.0CA-E3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ5.0CA-E3/51 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 SMBJ5.0CA-E3/51?
For technical support, including SMBJ5.0CA-E3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ5.0CA-E3/51 requirements.
6.How does Aetrix verify that SMBJ5.0CA-E3/51 is sourced from the original manufacturer or authorized distributors?
All SMBJ5.0CA-E3/51 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 SMBJ5.0CA-E3/51 meets industry standards.
7.What is the process for return or replacement of SMBJ5.0CA-E3/51?
All SMBJ5.0CA-E3/51 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ5.0CA-E3/51, 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 SMBJ5.0CA-E3/51 part is unused and in its original packaging.
Return procedure for SMBJ5.0CA-E3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ5.0CA-E3/51 Tags
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