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Vishay General Semiconductor - Diodes Division SMBJ7.0D-M3/I
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- Part No.:
- SMBJ7.0D-M3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ7.0D-M3/I.pdf
- Description:
- TVS DIODE 7VWM 11.8VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,432
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Product details
Overview
SMBJ7.0D-M3/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, with 7.0 V stand-off voltage (VWM), 7.90–8.48 V breakdown voltage (VBR) at 10 mA, 11.8 V clamping voltage (VC) at 50.8 A peak pulse current, and 600 W peak pulse power rating per 10/1000 μs waveform. It protects MOSFETs, ICs, and sensor signal lines against inductive switching transients and ESD in industrial and telecom power rails.
For engineers reviewing the SMBJ7.0D-M3/I datasheet, SMBJ7.0D-M3/I pinout, SMBJ7.0D-M3/I application, or SMBJ7.0D-M3/I equivalent, key selection criteria include unidirectional polarity, ±3.5 % VBR tolerance, 0.5 μA max reverse leakage at VWM, M3 halogen-free RoHS-compliant industrial-grade construction, and compatibility with automated SMT placement on minimum recommended pad layout.
Technical Context
This TVS diode operates as a clamping device in parallel with protected circuitry, conducting only when reverse voltage exceeds VBR to limit transient energy. Its low incremental surge resistance and fast response time ensure effective suppression of sub-microsecond transients without affecting normal DC operation.
Designed for single-polarity protection, SMBJ7.0D-M3/I features a cathode band marking, supports 150 A peak pulse current (IPPM) at 10/1000 μs, and maintains stable clamping performance across -55 °C to +150 °C junction temperature range with derating above 25 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.0 V - maximum continuous reverse operating voltage before conduction begins |
| VBR min/max | 7.90 V / 8.48 V at 10 mA - tight ±3.5 % tolerance ensures predictable turn-on threshold |
| VC @ IPPM | 11.8 V at 50.8 A - clamping voltage limits downstream voltage stress during surge events |
| PPPM | 600 W - peak pulse power handling capability with 10/1000 μs waveform, 0.01 % duty cycle |
| ID @ VWM | ≤ 500 μA - low leakage preserves signal integrity and minimizes standby power loss |
| Package | SMB (DO-214AA) - surface-mount outline with 2.20 mm height, optimized for automated assembly |
| TJ max | +150 °C - enables reliable operation in high-temperature industrial environments |
Pinout & Package
Two-terminal unidirectional TVS diode in SMB (DO-214AA) package. Cathode marked by band; anode and cathode terminals are non-polarized in layout but functionally asymmetric. Mounting requires minimum 5.0 mm × 5.0 mm copper pad area for thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction; connected to system ground or low-side reference | Provides return path during clamping; must be routed with low-inductance trace to minimize overshoot |
| Cathode | Protected line connection; marked by band on package body | Connected to the line being protected (e.g., 5 V rail, sensor input); conducts when transient exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| ±3.5 % VBR tolerance | Enables precise coordination with system overvoltage thresholds without margin stacking |
| 600 W peak pulse power | Handles IEC 61000-4-5 Level 4 surges (4 kV line-to-earth) with margin in typical PCB layouts |
| Low 0.5 μA leakage at VWM | Prevents false triggering and battery drain in always-on sensor interfaces |
| M3 suffix compliance | Halogens-free, RoHS-compliant, JESD 201 Class 2 whisker-resistant matte tin plating for long-term reliability |
| MSL Level 1 | Unlimited floor life at ≤30 °C/60 % RH; reflow compatible up to 260 °C peak without preconditioning |
Applications
| Industrial Motor Control Inputs | Automotive Body Control Module (BCM) Power Rails |
|---|---|
Use Scenario: Protection of microcontroller GPIOs and analog inputs connected to relay coils, solenoids, or contactors subject to L·di/dt induced transients. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between input node and ground, triggered within <1 ns to clamp spikes to ≤11.8 V. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V logic inputs while maintaining <500 μA leakage during nominal 7 V rail operation. | Use Scenario: Safeguarding 12 V supply lines feeding BCM microcontrollers and CAN transceivers against load dump and alternator ripple. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main power input, activated only during >7.9 V transients, with no effect on steady-state regulation. Use Value: Limits voltage excursion to 11.8 V during 100 ms load dump events, preserving downstream LDOs and digital ICs rated for 16 V absolute max. |
| Telecom DSL Line Interface Circuits | Consumer Appliance Sensor Signal Conditioning |
Use Scenario: Transient suppression on twisted-pair DSL line drivers exposed to lightning-induced surges and AC coupling transients. IC Role / Device Role / Timing Role: Bidirectional-capable variant not used; this unidirectional part applied on DC-biased line side where polarity is fixed. Use Value: Clamps common-mode surges to safe levels without distorting 1–30 MHz DSL signal integrity due to low capacitance and fast recovery. | Use Scenario: Protecting thermistor, Hall-effect, or pressure sensor outputs connected to MCU ADC inputs in washing machines or HVAC systems. IC Role / Device Role / Timing Role: Low-leakage TVS placed directly at sensor connector to shunt ESD and cable discharge events before reaching precision analog front-end. Use Value: Maintains <0.1 % gain error in 12-bit ADC measurements by limiting leakage to ≤500 μA and clamping transients to ≤11.8 V. |
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-M3/I | Same VWM (7.0 V), identical SMB package, but ±5 % VBR tolerance (vs. ±3.5 %) | Lower VBR precision reduces coordination margin with downstream overvoltage detectors | Select SMBJ7.0D-M3/I when tighter clamping threshold control is required for safety-critical sensing nodes |
| P6SMB7.0A | Same VWM and SMB package, but 600 W PPPM rating achieved at higher VC (12.6 V) and lower IPPM (47.6 A) | Higher clamping voltage increases stress on protected ICs during surge events | Choose SMBJ7.0D-M3/I when lower VC (11.8 V) is needed to meet strict 12 V rail immunity requirements |
Compared with SMBJ7.0A-M3/I and P6SMB7.0A, SMBJ7.0D-M3/I delivers superior VBR consistency and lower clamping voltage-critical for protecting 5 V and 7 V logic rails where margin to absolute maximum ratings is constrained.
Availability
SMBJ7.0D-M3/I is available at Aetrix Electronics and suitable for industrial motor drives, automotive body electronics, and telecom line interface designs requiring stable component supply, consistent M3-grade material compliance, and verified 600 W surge handling.
Supply support for SMBJ7.0D-M3/I 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, MOSFETs, and protection devices with emphasis on reliability and application-specific optimization.
The SMBJ series is engineered for robust transient suppression in harsh environments, targeting industrial automation, automotive subsystems, and infrastructure equipment where repeatable clamping performance and long-term stability are mandatory.
FAQ
What is the breakdown voltage range for SMBJ7.0D-M3/I?
The SMBJ7.0D-M3/I has a specified breakdown voltage (VBR) range of 7.90 V to 8.48 V at 10 mA test current, corresponding to ±3.5 % tolerance around the nominal 7.0 V stand-off voltage. This tight tolerance ensures predictable activation timing during overvoltage events and allows precise coordination with system-level protection thresholds without excessive design margin.
Does SMBJ7.0D-M3/I support bidirectional transient suppression?
No, SMBJ7.0D-M3/I is a unidirectional TVS diode, indicated by the "D" suffix (not "CD"). It conducts only when reverse voltage exceeds VBR, with cathode marked by a band. For bidirectional protection-such as AC line or data bus applications-the SMBJ7.0CD-M3/I variant must be used instead, as confirmed in Vishay's ordering matrix and electrical characteristics table.
What is the maximum clamping voltage of SMBJ7.0D-M3/I under surge conditions?
The SMBJ7.0D-M3/I exhibits a maximum clamping voltage (VC) of 11.8 V at its rated peak pulse current (IPPM) of 50.8 A, measured using the standard 10/1000 μs waveform. This value defines the upper voltage limit imposed on protected circuitry during worst-case surge events and is critical for ensuring downstream components remain within their absolute maximum voltage ratings.
Is SMBJ7.0D-M3/I compliant with lead-free and RoHS requirements?
Yes, SMBJ7.0D-M3/I carries the "M3" suffix, which certifies halogen-free construction, full RoHS compliance (2011/65/EU), and adherence to JESD 201 Class 2 whisker resistance standards. The matte tin-plated leads meet solderability requirements per J-STD-002 and JESD 22-B102, supporting both leaded and lead-free reflow profiles up to 260 °C peak.
What thermal derating applies to SMBJ7.0D-M3/I at elevated ambient temperatures?
SMBJ7.0D-M3/I power dissipation derates linearly above 25 °C ambient: its 1.0 W rating at TA = 25 °C decreases to 5.0 W at case temperature TM = 50 °C when mounted on an infinite heatsink, but drops significantly on standard PCB pads. Per Figure 5 in the Vishay datasheet, usable power falls to ~0.6 W at TA = 70 °C using the minimum recommended pad layout, requiring thermal design validation for sustained surge duty cycles.
SMBJ7.0D-M3/I 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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 7V
- Voltage - Breakdown (Min):
- 7.9V
- Voltage - Clamping (Max) @ Ipp:
- 11.8V
- Current - Peak Pulse (10/1000µs):
- 50.8A
- 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)
SMBJ7.0D-M3/I FAQ
1.How can I place an order for SMBJ7.0D-M3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ7.0D-M3/I 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 SMBJ7.0D-M3/I reliable?
The price and inventory of SMBJ7.0D-M3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ7.0D-M3/I is usually 5 days.
3.What payment methods are accepted for SMBJ7.0D-M3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ7.0D-M3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ7.0D-M3/I?
SMBJ7.0D-M3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ7.0D-M3/I 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 SMBJ7.0D-M3/I?
For technical support, including SMBJ7.0D-M3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ7.0D-M3/I requirements.
6.How does Aetrix verify that SMBJ7.0D-M3/I is sourced from the original manufacturer or authorized distributors?
All SMBJ7.0D-M3/I 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 SMBJ7.0D-M3/I meets industry standards.
7.What is the process for return or replacement of SMBJ7.0D-M3/I?
All SMBJ7.0D-M3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ7.0D-M3/I, 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 SMBJ7.0D-M3/I part is unused and in its original packaging.
Return procedure for SMBJ7.0D-M3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ7.0D-M3/I Tags
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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