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Taiwan Semiconductor Corporation SMBJ7V0A
- Part No.:
- SMBJ7V0A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ7V0A.pdf
- Description:
- TVS DIODE 7VWM 12VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,841
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Product details
Overview
SMBJ7V0A from Taiwan Semiconductor is a unidirectional 600W surface-mount transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, designed for high-energy ESD and surge protection. It features a 7.0V working stand-off voltage (VWM), 7.78–8.60V breakdown voltage (VBR) at 10mA, and clamps transients to ≤12.0V at 200A peak impulse current - ideal for protecting automotive power rails and industrial I/O interfaces.
For engineers reviewing the SMBJ7V0A datasheet, SMBJ7V0A pinout, SMBJ7V0A application, or SMBJ7V0A equivalent, key selection criteria include clamping voltage under 200A surge, leakage current <1µA at 7.0V, compliance with ISO 7637-2 Pulse 1/2a/2b/3a/3b, and DO-214AA thermal performance (RθJA = 55°C/W).
Technical Context
The SMBJ7V0A operates as a unidirectional avalanche diode, leveraging glass-passivated junction technology for stable breakdown and low leakage. Its fast response time (<1.0ps) enables suppression of ESD events before sensitive downstream circuitry is damaged.
Thermal design is supported by RθJC = 10°C/W and RθJA = 55°C/W, allowing reliable operation up to TJ = +150°C. The device meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability requirements for harsh-environment PCB assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.0 V - Maximum continuous reverse operating voltage before conduction begins; sets minimum system rail margin. |
| VBR @ IT=10mA | 7.78–8.60 V - Verified avalanche onset range; ensures predictable turn-on during transients. |
| VC @ IPP=200A | 12.0 V - Clamped voltage during 10/1000µs surge; defines maximum stress on protected ICs. |
| ID @ VWM | <1 µA - Ultra-low leakage preserves battery life and signal integrity in always-on circuits. |
| PPK | 600 W - Peak pulse power rating per 10/1000µs waveform; supports automotive load-dump immunity. |
| TJ max | +150 °C - Enables use in under-hood automotive modules and industrial motor drives. |
| Package | DO-214AA (SMB) - Standardized surface-mount footprint compatible with automated placement and reflow. |
Pinout & Package
DO-214AA (SMB) package with cathode band marking for unidirectional polarity. Matte tin-plated leads meet J-STD-002 solderability and JESD201 Class 2 whisker resistance requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Ground reference terminal | Connected to system ground or low-side return path; completes clamping loop during surge. |
| Cathode | Protected line input | Connected to the line being protected (e.g., 12V supply rail); conducts when voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR over temperature and lifetime; eliminates parameter drift in automotive cycling. |
| ISO 7637-2 compliance | Validated for Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (ESD coupling) - required for automotive ECUs. |
| Moisture sensitivity level 1 | Enables standard SMT handling without dry-pack or baking; reduces manufacturing overhead. |
| RoHS & halogen-free | Meets IEC 61249-2-21 and EU RoHS directives; supports green electronics certification and end-of-life recycling. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: 12V battery-supplied control module exposed to load-dump pulses up to 35V and ISO 7637-2 Pulse 1. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between power input and DC-DC converter input. Use Value: Limits transient voltage to ≤12.0V at 200A, preventing damage to 16V-rated input capacitors and LDOs. |
Use Scenario: 4–20mA current-loop sensor node connected to PLC analog input with long cable runs. IC Role / Device Role / Timing Role: Line-side TVS on sensor output line to absorb induced surges and ESD. Use Value: Sub-1.0ps response captures fast transients before op-amp input stages saturate or latch. |
| LED Driver Overvoltage Protection | USB Port ESD Suppression |
Use Scenario: Constant-current LED driver board powered from 24V industrial supply subject to switching noise. IC Role / Device Role / Timing Role: TVS across driver input terminals to shunt inductive kickback from relay coils. Use Value: 600W PPK rating handles repetitive 8.3ms half-sine surges up to 100A IFSM without degradation. |
Use Scenario: USB 2.0 host port on embedded gateway exposed to human-body-model (HBM) ESD events. IC Role / Device Role / Timing Role: Unidirectional TVS on VBUS line to clamp ESD to safe levels while preserving 5V regulation. Use Value: 7.0V VWM allows full 5V operation with margin; 12.0V VC prevents USB PHY latch-up during ±8kV contact discharge. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.0A (ON Semiconductor) | Identical VWM (7.0V), VBR (7.78–8.60V), and VC (12.0V); same DO-214AA package and 600W rating. | No functional difference; validated for identical ISO 7637-2 pulses and thermal profiles. | Select based on supply chain availability and qualification status for automotive AEC-Q101. |
| P6SMB7.0A (Littelfuse) | VWM = 7.0V, VBR = 7.78–8.60V, VC = 12.0V, but rated for 600W only at TA = 25°C; derates faster above 25°C (RθJA = 60°C/W vs. 55°C/W). | Marginally lower thermal performance may limit use in high-ambient industrial enclosures (>85°C). | Prefer SMBJ7V0A where sustained operation above 70°C is required or where tighter thermal budget exists. |
Compared with SMBJ7.0A (ON Semi), SMBJ7V0A offers identical electrical specs and qualification scope; versus P6SMB7.0A (Littelfuse), SMBJ7V0A provides superior thermal dissipation (RθJA = 55°C/W), enabling higher ambient operation without derating.
Availability
SMBJ7V0A is available at Aetrix Electronics and suitable for automotive ECU designs, industrial sensor nodes, LED lighting drivers, and USB interface protection requiring stable component supply across multi-year production cycles.
Supply support for SMBJ7V0A 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 semiconductor manufacturer specializing in discrete power devices, TVS diodes, and rectifiers since 1979.
The SMBJ series was developed specifically for high-reliability transient suppression in automotive and industrial environments, emphasizing ISO 7637-2 compliance, low leakage, and robust thermal performance in surface-mount packages.
FAQ
What is the clamping voltage of SMBJ7V0A at its rated peak pulse current?
The SMBJ7V0A clamps to a maximum of 12.0 V when subjected to its rated peak impulse current of 200 A under the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and confirmed in Taiwan Semiconductor's R2104 datasheet, ensuring predictable overvoltage limiting for downstream 12V-rated components.
Is SMBJ7V0A unidirectional or bidirectional, and how is polarity identified?
SMBJ7V0A is a unidirectional TVS diode, indicated by the absence of "C" or "CA" suffix. Polarity is marked by a cathode band on the DO-214AA (SMB) package body - the banded end connects to the protected line (cathode), while the unmarked end connects to ground (anode). This configuration blocks forward current until VBR is exceeded.
Does SMBJ7V0A meet automotive surge immunity standards?
Yes, SMBJ7V0A meets ISO 7637-2 requirements for Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling and ESD), as explicitly stated in the Taiwan Semiconductor datasheet. Its 600W rating and 12.0V clamping enable compliance in 12V automotive subsystems.
What is the maximum leakage current of SMBJ7V0A at its working voltage?
At its 7.0 V working stand-off voltage (VWM), SMBJ7V0A exhibits a maximum blocking leakage current (ID) of less than 1 µA at 25°C. This ultra-low leakage preserves power efficiency in battery-backed systems and avoids false triggering in high-impedance sensing circuits.
Can SMBJ7V0A be used in place of SMBJ7.0 or SMBJ7.0A from other manufacturers?
SMBJ7V0A is functionally equivalent to SMBJ7.0A from ON Semiconductor and P6SMB7.0A from Littelfuse in terms of VWM, VBR, VC, and PPK. However, due to differences in thermal resistance (RθJA = 55°C/W), it offers better high-temperature performance than P6SMB7.0A (RθJA = 60°C/W), making SMBJ7V0A preferable for elevated ambient applications.
SMBJ7V0A 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):
- 7V
- Voltage - Breakdown (Min):
- 7.78V
- Voltage - Clamping (Max) @ Ipp:
- 12V
- Current - Peak Pulse (10/1000µs):
- 50A
- 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)
SMBJ7V0A FAQ
1.How can I place an order for SMBJ7V0A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ7V0A 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 SMBJ7V0A reliable?
The price and inventory of SMBJ7V0A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ7V0A is usually 5 days.
3.What payment methods are accepted for SMBJ7V0A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ7V0A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ7V0A?
SMBJ7V0A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ7V0A 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 SMBJ7V0A?
For technical support, including SMBJ7V0A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ7V0A requirements.
6.How does Aetrix verify that SMBJ7V0A is sourced from the original manufacturer or authorized distributors?
All SMBJ7V0A 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 SMBJ7V0A meets industry standards.
7.What is the process for return or replacement of SMBJ7V0A?
All SMBJ7V0A units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ7V0A, 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 SMBJ7V0A part is unused and in its original packaging.
Return procedure for SMBJ7V0A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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