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Vishay General Semiconductor - Diodes Division SMBJ8.0CA-E3/52
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- Part No.:
- SMBJ8.0CA-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ8.0CA-E3/52.pdf
- Description:
- TVS DIODE 8VWM 13.6VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:58,343
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Product details
Overview
SMBJ8.0CA-E3/52 from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on signal or power lines. It features a 8.0 V stand-off voltage (VWM), 13.6 V maximum clamping voltage (VC) at 44.1 A peak pulse current (IPPM), and 600 W peak pulse power (10/1000 µs waveform), commonly deployed to protect MOSFET gates and sensor signal lines in industrial motor drives.
For engineers reviewing the SMBJ8.0CA-E3/52 datasheet, SMBJ8.0CA-E3/52 pinout, SMBJ8.0CA-E3/52 application, or SMBJ8.0CA-E3/52 equivalent, key selection criteria include bidirectional clamping capability, low clamping ratio (VC/VWM = 1.7), MSL Level 1 moisture sensitivity, and AEC-Q101 qualification eligibility via HE3/HM3 variants.
Technical Context
This device operates as a voltage-clamped surge protector with symmetrical breakdown behavior in both polarities due to its bidirectional construction. Its glass-passivated junction ensures stable avalanche characteristics, while the low incremental surge resistance enables consistent clamping performance under repetitive 10/1000 µs transients at 0.01% duty cycle.
The SMBJ8.0CA-E3/52 exhibits a typical thermal resistance of 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead), supporting operation from –55 °C to +150 °C. Its 1.0 µA maximum reverse leakage at VWM minimizes standby power loss in always-on protection circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 8.0 V - Maximum continuous reverse operating voltage before significant leakage; sets upper limit for protected line's normal operating range. |
| VBR min / max | 8.89 V / 9.83 V at 1 mA - Confirmed breakdown threshold window; ensures reliable triggering above VWM without premature conduction. |
| VC @ IPPM | 13.6 V at 44.1 A - Clamped voltage during 600 W transient; defines worst-case overvoltage seen by downstream ICs. |
| PPPM | 600 W - Peak pulse power handling with 10/1000 µs waveform; supports robust protection against inductive switching spikes. |
| IPPM | 44.1 A - Peak surge current capacity; determines minimum trace width and PCB copper area required for safe energy dissipation. |
| TJ max | +150 °C - Maximum junction temperature; enables use in high-ambient environments such as enclosed industrial enclosures. |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 5.59 mm × 4.06 mm footprint; compatible with automated pick-and-place and reflow soldering. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads, compliant with J-STD-002 and JESD 22-B102 solderability standards. Bidirectional configuration has no polarity marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point (negative half-cycle) | Conducts surge current when cathode is negative relative to anode; symmetric with cathode for bidirectional operation. |
| Cathode | Transient current entry point (positive half-cycle) | Conducts surge current when anode is negative relative to cathode; identical electrical behavior to anode terminal. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables protection against high-energy transients from relay coil de-energization or ESD events without thermal runaway. |
| Clamping voltage ≤13.6 V at 44.1 A | Limits overvoltage stress on 5 V or 3.3 V logic interfaces, ensuring compatibility with standard CMOS input tolerances. |
| MSL Level 1 (260 °C peak reflow) | Eliminates need for dry-packaging or baking prior to assembly, reducing manufacturing overhead and moisture-related defects. |
| Low 1.0 µA reverse leakage at VWM | Prevents excessive quiescent current in battery-powered sensor nodes or always-on monitoring circuits. |
| Glass passivated junction | Delivers stable, repeatable avalanche characteristics over temperature and lifetime, critical for automotive and industrial reliability. |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
|
Use Scenario: Protection of gate driver inputs against voltage spikes induced by IGBT/MOSFET switching noise and inductive kickback. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed across gate-source terminals or between control signal and ground. Use Value: Prevents false triggering or oxide damage in gate drivers by limiting transient overvoltage to ≤13.6 V during 44.1 A surges. |
Use Scenario: Surge suppression on LIN bus lines and sensor supply rails exposed to load dump and jump-start conditions. IC Role / Device Role / Timing Role: Primary front-end protection element on low-voltage communication and sensing interfaces. Use Value: Maintains signal integrity under ISO 7637-2 Pulse 1/2a/5a stress tests with no degradation after 1000+ transient events. |
| Consumer Power Adapters | Industrial PLC I/O Modules |
|
Use Scenario: Input-stage protection on secondary-side DC outputs of AC/DC adapters subject to capacitive discharge and hot-plug transients. IC Role / Device Role / Timing Role: Standoff-rated suppressor placed between output rail and ground, upstream of LDO regulators. Use Value: Blocks >600 W surges while maintaining <1.0 µA leakage, avoiding regulation drift or thermal derating of downstream components. |
Use Scenario: Signal line protection for analog 4–20 mA current loops and digital DI/DO channels in factory automation systems. IC Role / Device Role / Timing Role: Line-to-ground TVS on each field-connected terminal to absorb induced lightning-induced surges. Use Value: Withstands repeated 1 kV/500 A surge events per IEC 61000-4-5 Level 3 without parameter shift or failure. |
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-M3/52 | Halogen-free, RoHS-compliant variant with identical electrical specs and SMB package. | No functional difference; selected where halogen-free compliance is mandated by end-equipment environmental policy. | Choose when regulatory compliance requires halogen-free materials without altering circuit design or layout. |
| SMCJ8.0CA-E3/52 | Same VWM/VC ratings but in larger SMC (DO-214AB) package with 1500 W PPPM. | Higher surge capacity suits higher-energy environments (e.g., 48 V industrial buses), requiring larger PCB pad area. | Choose when system-level surge testing exceeds 600 W requirements or when longer transient duration must be absorbed. |
Compared with SMBJ8.0CA-E3/52, the M3 variant offers identical protection performance with halogen-free construction, while the SMCJ8.0CA-E3/52 provides 2.5× higher pulse power in a physically larger package-enabling design flexibility for either regulatory alignment or enhanced ruggedness without changing clamping behavior.
Availability
SMBJ8.0CA-E3/52 is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, consumer power adapters, and industrial PLC I/O modules requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMBJ8.0CA-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, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMBJ series was engineered for high-reliability transient suppression in space-constrained surface-mount applications, targeting industrial, automotive, and telecom systems where consistent clamping and AEC-Q101 readiness are essential.
FAQ
What is the clamping voltage of SMBJ8.0CA-E3/52 at its rated peak pulse current?
The SMBJ8.0CA-E3/52 has a maximum clamping voltage (VC) of 13.6 V when subjected to its rated peak pulse current of 44.1 A using the standard 10/1000 µs waveform. This value is measured under defined test conditions per ANSI/IEEE C62.35 and ensures predictable overvoltage limiting for downstream components in the SMBJ8.0CA-E3/52-protected circuit.
Is SMBJ8.0CA-E3/52 suitable for automotive applications?
The SMBJ8.0CA-E3/52 itself is commercial-grade; however, the same device in HE3 or HM3 suffix variants (e.g., SMBJ8.0CAHE3_B) is AEC-Q101 qualified. For automotive use, specify the HE3/HM3 version to ensure qualification for under-hood and body electronics applications-SMBJ8.0CA-E3/52 meets all electrical and thermal specs but lacks formal automotive qualification.
What does the "CA" suffix indicate in SMBJ8.0CA-E3/52?
The "CA" suffix in SMBJ8.0CA-E3/52 denotes a bidirectional configuration, meaning the device provides symmetrical transient suppression in both polarities. Unlike unidirectional "A" versions, SMBJ8.0CA-E3/52 has no cathode marking and functions identically whether voltage is applied anode-positive or cathode-positive-ideal for AC-coupled or floating signal lines.
How does SMBJ8.0CA-E3/52 compare to SMAJ8.0CA in terms of surge capability?
SMBJ8.0CA-E3/52 delivers 600 W peak pulse power in the SMB package, whereas SMAJ8.0CA (SMA/DO-214AC) is rated for 400 W. The larger SMB outline allows higher thermal mass and lower RθJA, enabling SMBJ8.0CA-E3/52 to sustain greater surge energy without exceeding TJ limits-making it preferable for demanding industrial or automotive surge environments.
What is the maximum reverse leakage current for SMBJ8.0CA-E3/52 at its stand-off voltage?
The SMBJ8.0CA-E3/52 specifies a maximum reverse leakage current (ID) of 1.0 µA at its 8.0 V stand-off voltage (VWM) and 25 °C ambient temperature. This low leakage ensures minimal impact on power budget in always-on systems and preserves accuracy in high-impedance sensing paths protected by the SMBJ8.0CA-E3/52.
SMBJ8.0CA-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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 8V
- Voltage - Breakdown (Min):
- 8.89V
- Voltage - Clamping (Max) @ Ipp:
- 13.6V
- Current - Peak Pulse (10/1000µs):
- 44.1A
- 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)
SMBJ8.0CA-E3/52 FAQ
1.How can I place an order for SMBJ8.0CA-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ8.0CA-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 SMBJ8.0CA-E3/52 reliable?
The price and inventory of SMBJ8.0CA-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 SMBJ8.0CA-E3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ8.0CA-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ8.0CA-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ8.0CA-E3/52?
SMBJ8.0CA-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ8.0CA-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 SMBJ8.0CA-E3/52?
For technical support, including SMBJ8.0CA-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ8.0CA-E3/52 requirements.
6.How does Aetrix verify that SMBJ8.0CA-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ8.0CA-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 SMBJ8.0CA-E3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ8.0CA-E3/52?
All SMBJ8.0CA-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ8.0CA-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 SMBJ8.0CA-E3/52 part is unused and in its original packaging.
Return procedure for SMBJ8.0CA-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ8.0CA-E3/52 Tags
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