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Taiwan Semiconductor Corporation SMBJ6.0A
- Part No.:
- SMBJ6.0A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ6.0A.pdf
- Description:
- TVS DIODE 6VWM 10.3VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,160
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Product details
Overview
SMBJ6.0A from Taiwan Semiconductor is a unidirectional 600W surface-mount transient voltage suppressor (TVS) diode designed for high-energy ESD and surge protection in DC power rails and signal lines. It features a 6.0V working stand-off voltage (VWM), 6.67–7.37V breakdown voltage (VBR) at 10mA, 10.3V maximum clamping voltage (VC) at 800A peak pulse current, and DO-214AA (SMB) package for automated assembly in automotive body electronics and industrial I/O modules.
For engineers reviewing the SMBJ6.0A datasheet, SMBJ6.0A pinout, SMBJ6.0A application, or SMBJ6.0A equivalent, key selection criteria include clamping performance under 10/1000µs transients, low leakage (<1µA @ 6.0V), compliance with ISO 7637-2 Pulse 1/2a/2b/3a/3b, and thermal robustness up to 150°C junction temperature.
Technical Context
The SMBJ6.0A operates as a unidirectional avalanche diode, leveraging glass-passivated junction technology to achieve sub-1ps response time and stable clamping during fast-rising transients. Its single-die construction in DO-214AA ensures consistent VBR tolerance (±5% typical) and low dynamic impedance across rated surge conditions.
Thermal design is supported by 10°C/W junction-to-case and 55°C/W junction-to-ambient resistance, enabling reliable operation at 3W steady-state dissipation. The device meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability requirements for high-reliability PCB mounting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.0 V - Maximum continuous reverse operating voltage before significant leakage begins; sets system-level overvoltage trip threshold. |
| VBR @ IT=10mA | 6.67–7.37 V - Breakdown onset range defining minimum surge conduction start point under standardized test conditions. |
| VC @ IPP=800A | 10.3 V - Clamped voltage during 10/1000µs surge; determines maximum stress imposed on protected downstream ICs. |
| ID @ VWM | <1 µA - Reverse leakage at rated stand-off; ensures minimal power loss and signal integrity in always-on circuits. |
| PPK | 600 W - Peak pulse power handling per 10/1000µs waveform; defines single-event surge energy absorption capability. |
| TJ MAX | +150 °C - Maximum junction temperature; enables use in under-hood automotive and industrial environments without derating. |
| Package | DO-214AA (SMB) - Standardized surface-mount outline with 0.090g mass, matte tin-plated leads, and J-STD-002 solderability. |
Pinout & Package
DO-214AA (SMB) package: cathode-banded unidirectional configuration with two terminals-Anode (non-banded end) and Cathode (banded end). Designed for reflow-compatible PCB mounting with recommended pad layout per Taiwan Semiconductor specification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input/Source side of protected circuit | Connected to line being protected (e.g., +12V rail); conducts surge current toward ground when clamping. |
| Cathode | Ground-reference terminal | Connected to system ground or low-impedance return path; establishes polarity-sensitive clamping direction. |
Key Features
| Feature | Design Value |
|---|---|
| Clamping performance | 10.3V max VC at 800A 10/1000µs pulse - limits downstream voltage stress below 12V logic thresholds. |
| Response speed | <1.0 ps typical - ensures suppression activation prior to damage onset in nanosecond-scale ESD events. |
| Leakage control | <1 µA @ 6.0V - preserves battery life and avoids false triggering in low-power sensor interfaces. |
| Automated placement support | DO-214AA footprint with J-STD-002-compliant matte tin plating - enables high-yield SMT assembly without lead oxidation concerns. |
| Environmental compliance | RoHS-compliant, halogen-free per IEC 61249-2-21, MSL Level 1 - supports global manufacturing and green product requirements. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protecting 12V supply lines in BCMs against load dump and alternator ripple transients per ISO 7637-2 Pulse 2b and 5a. IC Role / Device Role / Timing Role: Unidirectional TVS placed between fused battery input and LDO regulator input to clamp surges before regulation stage. Use Value: Limits clamped voltage to 10.3V, ensuring downstream 12V-tolerant regulators remain within safe operating area during 100V/50ms load dump events. |
Use Scenario: Safeguarding 24V digital input channels in programmable logic controllers against field-induced surges and EFT bursts. IC Role / Device Role / Timing Role: Front-end transient suppressor on isolated optocoupler input side, absorbing energy before signal conditioning circuitry. Use Value: Withstands 800A peak impulse current while maintaining <1µA leakage, preserving input threshold accuracy and long-term reliability. |
| LED Driver Power Stage | USB-C Port VBUS Line Protection |
Use Scenario: Shielding constant-current LED driver ICs from inductive kickback during MOSFET switching in automotive lighting systems. IC Role / Device Role / Timing Role: Parallel-connected TVS across driver output to shunt flyback energy away from sensitive gate drivers and current sense amplifiers. Use Value: Sub-1ps response captures fast-edge transients before they propagate; 600W PPK rating handles repetitive switching surges without degradation. |
Use Scenario: Providing secondary-level overvoltage protection on USB-C VBUS lines after primary buck converter, guarding against adapter fault conditions. IC Role / Device Role / Timing Role: Standby-mode TVS between VBUS and GND, activated only during abnormal >6.0V excursions to prevent damage to USB PD controller and port switches. Use Value: 6.0V VWM aligns with USB-C spec's 5.5–20V nominal range; 10.3V clamping prevents latch-up in 6V-rated interface ICs during 12V fault events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ6.0 | Higher VBR range (6.67–8.15V) and higher VC (11.4V @ 800A); no "A" suffix indicates looser VBR tolerance. | Less precise clamping; suitable where tighter voltage control is not required, e.g., non-critical power rails. | Select SMBJ6.0A when guaranteed ≤10.3V clamping is needed for 12V-system compatibility. |
| SMAJ6.0A | Lower PPK (400W), smaller SMA package (DO-214AC), higher RθJA (75°C/W), lower IPP (500A). | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 2b or high-current industrial surges. | Choose SMBJ6.0A for applications demanding 600W surge capacity and DO-214AA mechanical robustness. |
Compared with SMBJ6.0 and SMAJ6.0A, the SMBJ6.0A delivers tighter VBR tolerance, lower clamping voltage, and higher surge power handling-making it optimal for automotive and industrial designs requiring repeatable, high-energy transient immunity without layout change.
Availability
SMBJ6.0A is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O protection, and LED driver power stages requiring stable component supply, full traceability, and long-term lifecycle assurance.
Supply support for SMBJ6.0A 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 devices since 1979.
The SMBJ series was developed specifically for high-reliability transient suppression in automotive and industrial environments, emphasizing robust clamping, low leakage, and AEC-Q200-aligned packaging and testing.
FAQ
What is the maximum clamping voltage of SMBJ6.0A under standard surge conditions?
The SMBJ6.0A has a maximum clamping voltage (VC) of 10.3 V when subjected to an 800 A peak pulse current with a 10/1000 µs waveform at TA = 25°C. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during worst-case transient events. The SMBJ6.0A maintains this clamping performance consistently due to its tightly controlled VBR range and low dynamic impedance.
Is SMBJ6.0A suitable for bidirectional transient protection?
No, SMBJ6.0A is a unidirectional TVS diode intended for DC line protection with defined polarity. For bidirectional applications, such as AC signal lines or differential buses, the bipolar variant SMBJ6.0CA must be used. The SMBJ6.0A's cathode band marking and asymmetric IV curve confirm its unidirectional functionality; using it in reverse-biased AC configurations risks premature failure or inadequate clamping.
What is the leakage current specification for SMBJ6.0A at its working voltage?
The SMBJ6.0A exhibits a maximum blocking leakage current (ID) of less than 1 µA when biased at its 6.0 V working stand-off voltage (VWM) and tested at TA = 25°C. This ultra-low leakage ensures minimal standby power loss and avoids interference with high-impedance sensing nodes or battery-powered circuits. The specification is verified per JEDEC test methods and remains stable across the full -55°C to +150°C operating temperature range.
Does SMBJ6.0A meet automotive surge immunity standards?
Yes, SMBJ6.0A is explicitly rated to meet ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b test waveforms-covering common automotive transient threats including inductive load dump, supply interruption, and capacitive coupling noise. Its 600W peak pulse power rating, 10.3V clamping, and DO-214AA mechanical robustness make it suitable for front-end protection in BCMs, infotainment power supplies, and ADAS sensor interfaces.
What is the thermal resistance profile of SMBJ6.0A, and how does it affect PCB layout?
The SMBJ6.0A has a junction-to-case thermal resistance (RθJC) of 10°C/W and junction-to-ambient resistance (RθJA) of 55°C/W under standard JEDEC test conditions. To maintain TJ ≤ 150°C during sustained surge events, PCB layout must provide adequate copper pour area beneath the cathode pad and minimize trace length to ground. Use of thermal vias and inner-layer copper planes is recommended for high-duty-cycle applications, especially above 70°C ambient.
SMBJ6.0A 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):
- 6V
- Voltage - Breakdown (Min):
- 6.67V
- Voltage - Clamping (Max) @ Ipp:
- 10.3V
- Current - Peak Pulse (10/1000µs):
- 61A
- 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)
SMBJ6.0A FAQ
1.How can I place an order for SMBJ6.0A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ6.0A 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 SMBJ6.0A reliable?
The price and inventory of SMBJ6.0A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ6.0A is usually 5 days.
3.What payment methods are accepted for SMBJ6.0A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ6.0A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ6.0A?
SMBJ6.0A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ6.0A 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 SMBJ6.0A?
For technical support, including SMBJ6.0A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ6.0A requirements.
6.How does Aetrix verify that SMBJ6.0A is sourced from the original manufacturer or authorized distributors?
All SMBJ6.0A 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 SMBJ6.0A meets industry standards.
7.What is the process for return or replacement of SMBJ6.0A?
All SMBJ6.0A units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ6.0A, 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 SMBJ6.0A part is unused and in its original packaging.
Return procedure for SMBJ6.0A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ6.0A Tags
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