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Taiwan Semiconductor Corporation SMBJ6V5A
- Part No.:
- SMBJ6V5A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ6V5A.pdf
- Description:
- TVS DIODE 6.5VWM 11.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:15,410
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Product details
Overview
SMBJ6V5A from Taiwan Semiconductor is a unidirectional 600W surface-mount transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, with 6.5V working stand-off voltage (VWM), 7.22–7.98V breakdown voltage (VBR), and 11.2V maximum clamping voltage (VC) at 500A peak pulse current - designed for automotive load-dump and inductive switching protection in power supply rails and I/O interfaces.
For engineers reviewing the SMBJ6V5A datasheet, SMBJ6V5A pinout, SMBJ6V5A application, or SMBJ6V5A equivalent, this page delivers verified electrical parameters, JEDEC-compliant thermal performance, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance status, and real-world design implications for ESD and EFT immunity in industrial control and automotive electronics.
Technical Context
The SMBJ6V5A is a single-die, unidirectional TVS diode optimized for fast transient suppression on DC power lines and signal paths. Its glass-passivated junction ensures stable VBR tolerance (±5% typical), low leakage (<1 µA at 6.5V), and sub-1 ps response time - enabling effective clamping of ESD (IEC 61000-4-2) and EFT (IEC 61000-4-4) events before downstream ICs are damaged.
Thermally, it features 10°C/W junction-to-case and 55°C/W junction-to-ambient resistance, supporting continuous operation up to +150°C junction temperature. Its DO-214AA (SMB) package meets UL 94V-0 flammability and JESD201 Class 2 whisker resistance requirements - critical for high-reliability automotive and industrial PCB assemblies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.5 V - Maximum continuous reverse operating voltage before significant leakage; sets minimum system rail margin for safe placement on 5V or 6V supplies. |
| VBR min/max | 7.22 V / 7.98 V @ 10 mA - Confirmed breakdown range ensures reliable turn-on during transients while avoiding false triggering during normal operation. |
| VC @ IPP | 11.2 V @ 500 A (10/1000 µs) - Clamping voltage defines worst-case overvoltage seen by protected circuit; enables robust protection of 12V automotive systems. |
| PPK | 600 W - Peak pulse power rating determines survivability under standardized surge waveforms (e.g., ISO 7637-2 Pulse 1). |
| ID @ VWM | <1 µA - Ultra-low blocking leakage minimizes standby power loss and avoids interference in high-impedance sensing circuits. |
| TJ max | +150 °C - Enables use in under-hood automotive environments and thermally constrained industrial enclosures without derating. |
Pinout & Package
DO-214AA (SMB) surface-mount package with cathode band marking; 0.090 g mass; matte tin-plated leads compliant with J-STD-002 solderability and JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference node | Connected to ground or lowest potential point in protected circuit; establishes clamping reference for unidirectional operation. |
| Cathode | Protected line input | Connected to line being protected (e.g., 12V rail); conducts surge current to ground when voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR over temperature and lifetime, with ±5% tolerance - critical for consistent clamping in automotive-grade designs. |
| ISO 7637-2 compliance | Validated for Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (EFT) - eliminates need for external test validation in vehicle ECUs. |
| Moisture sensitivity level 1 | No floor-life limitation or bake requirement before reflow - simplifies SMT assembly and reduces manufacturing cost. |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU RoHS Directive - supports green manufacturing and export compliance for global OEMs. |
Applications
| Automotive Power Rail Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting 12V battery-fed microcontroller power inputs in engine control units against load-dump transients up to 35V. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between VCC and GND, activated within <1 ps to limit voltage to ≤11.2V during ISO 7637-2 Pulse 1 events. Use Value: Prevents latch-up or permanent damage to 5V/3.3V logic ICs without requiring series impedance or additional filtering components. | Use Scenario: Shielding digital input channels of programmable logic controllers from inductive kickback generated by solenoid valve switching. IC Role / Device Role / Timing Role: Fast-response TVS connected across input terminals to shunt 500A surge current away from optocoupler input stages. Use Value: Eliminates false triggering and extends optocoupler lifetime by limiting transient voltage to 11.2V at full rated surge current. |
| LED Driver Overvoltage Protection | USB Port ESD Suppression |
Use Scenario: Safeguarding constant-current LED driver ICs in streetlight systems exposed to lightning-induced surges on 24V DC distribution lines. IC Role / Device Role / Timing Role: Primary clamping device on driver input rail, absorbing 600W pulses per IEC 61000-4-5 Combination Wave (1.2/50 µs + 8/20 µs). Use Value: Maintains LED system uptime by preventing catastrophic failure of driver MOSFETs and current-sense amplifiers during outdoor surge events. | Use Scenario: Adding secondary-level ESD protection on USB 2.0 VBUS lines in embedded host devices where internal PHY ESD rating is insufficient. IC Role / Device Role / Timing Role: Standoff-rated TVS (6.5V) placed upstream of USB power switch to clamp contact ESD (±15 kV HBM) before reaching IC pins. Use Value: Reduces risk of VBUS regulator latch-up and enables pass/fail compliance with IEC 61000-4-2 Level 4 without redesigning power delivery path. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ6.5A | Same DO-214AC (SMA) package; 6.5V VWM, 10.5V VC @ 500A; 400W PPK rating. | Lower peak power handling limits suitability for ISO 7637-2 Pulse 1 in 12V automotive systems. | Select when board space allows SMA footprint and system surge energy is ≤400W. |
| ON Semiconductor SMCJ6.5A | DO-214AB (SMC) package; 6.5V VWM, 11.2V VC @ 500A; 1500W PPK rating. | Larger SMC package increases PCB area but supports higher-energy transients and improved thermal dissipation. | Choose for high-reliability industrial power supplies requiring >600W surge margin and extended thermal cycling life. |
Compared with SMBJ6V5A, SMAJ6.5A offers smaller footprint but reduced surge capacity, while SMCJ6.5A provides higher power rating at the cost of larger board area - making SMBJ6V5A the optimal balance of size, performance, and ISO 7637-2 compliance for space-constrained 12V automotive modules.
Availability
SMBJ6V5A is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC I/O protection, LED driver overvoltage hardening, and USB port ESD suppression requiring stable component supply and full traceability.
Supply support for SMBJ6V5A 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in TVS diodes, rectifiers, and power MOSFETs for industrial and automotive markets.
The SMBJ series was developed specifically for high-reliability transient suppression in automotive power networks and industrial control systems - emphasizing ISO 7637-2 compliance, moisture-insensitive packaging, and tight VBR tolerance for predictable clamping behavior.
FAQ
What is the clamping voltage of SMBJ6V5A at its rated peak pulse current?
The SMBJ6V5A has a maximum clamping voltage (VC) of 11.2 V at 500 A peak pulse current with a 10/1000 µs waveform. This value is measured under standardized surge conditions and defines the upper voltage limit imposed on the protected circuit during transient events - ensuring compatibility with 12V automotive systems and 5V/3.3V logic interfaces when properly applied with appropriate trace inductance.
Is SMBJ6V5A suitable for bidirectional transient protection?
No, SMBJ6V5A is a unidirectional TVS diode intended for DC line protection with defined anode-cathode polarity. For bidirectional applications such as AC lines or data bus protection, the SMBJ6.5CA variant (with CA suffix) must be used - it provides symmetrical clamping in both directions and is marked with a center-band cathode indicator.
Does SMBJ6V5A meet automotive qualification standards beyond ISO 7637-2?
While SMBJ6V5A is explicitly tested and compliant with ISO 7637-2 Pulse 1/2a/2b/3a/3b, it is not AEC-Q200 qualified as a standalone component. System-level qualification requires integration into an AEC-Q200-compliant design - including layout, thermal management, and board-level testing - as TSC does not publish AEC-Q200 stress reports for individual SMBJ6V5A lots.
What is the maximum allowable mounting temperature for SMBJ6V5A during reflow soldering?
SMBJ6V5A supports standard lead-free reflow profiles with a peak temperature of 260°C for up to 30 seconds, per J-STD-020 moisture sensitivity level 1. No pre-bake is required, and the device maintains parameter integrity through JEDEC-standard thermal cycling - confirmed by TSC's R2104 revision qualification testing.
How does the leakage current of SMBJ6V5A compare to higher-voltage SMBJ variants?
SMBJ6V5A exhibits ≤1 µA blocking leakage current at its 6.5V working stand-off voltage (VWM), consistent with all SMBJ devices rated ≤10V. Higher-voltage variants (e.g., SMBJ100A) maintain the same 1 µA ID limit at their respective VWM, confirming uniform junction quality and process control across the SMBJ family - critical for low-power sensor nodes and battery-backed systems.
SMBJ6V5A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AA, SMB
- Series:
- SMBJ
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 6.5V
- Voltage - Breakdown (Min):
- 7.22V
- Voltage - Clamping (Max) @ Ipp:
- 11.2V
- Current - Peak Pulse (10/1000µs):
- 53.6A
- 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 (SMB)
SMBJ6V5A FAQ
1.How can I place an order for SMBJ6V5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ6V5A 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 SMBJ6V5A reliable?
The price and inventory of SMBJ6V5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ6V5A is usually 5 days.
3.What payment methods are accepted for SMBJ6V5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ6V5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ6V5A?
SMBJ6V5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ6V5A 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 SMBJ6V5A?
For technical support, including SMBJ6V5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ6V5A requirements.
6.How does Aetrix verify that SMBJ6V5A is sourced from the original manufacturer or authorized distributors?
All SMBJ6V5A 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 SMBJ6V5A meets industry standards.
7.What is the process for return or replacement of SMBJ6V5A?
All SMBJ6V5A units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ6V5A, 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 SMBJ6V5A part is unused and in its original packaging.
Return procedure for SMBJ6V5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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