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Vishay General Semiconductor - Diodes Division SMBJ7.0CD-M3/H
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- Part No.:
- SMBJ7.0CD-M3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ7.0CD-M3/H.pdf
- Description:
- TVS DIODE 7VWM 11.8VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:1,082
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Product details
Overview
SMBJ7.0CD-M3/H from Vishay General Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode in the SMB (DO-214AA) package, designed for clamping voltage transients on signal or power lines. It features a 7.0 V stand-off voltage (VWM), 600 W peak pulse power (10/1000 μs), ±3.5 % breakdown voltage tolerance (6.50–6.97 V at 10 mA), and clamps to ≤11.8 V at 50.8 A peak surge current - used in sensor interface protection and DC power rail surge suppression.
For engineers reviewing the SMBJ7.0CD-M3/H datasheet, SMBJ7.0CD-M3/H pinout, SMBJ7.0CD-M3/H application, or SMBJ7.0CD-M3/H equivalent, key selection criteria include bidirectional clamping capability, low clamping voltage under 600 W surge, tight VBR tolerance, MSL Level 1 solderability, and halogen-free RoHS-compliant construction per JESD 201 Class 2 whisker test.
Technical Context
This device operates as a voltage-clamping protector with symmetrical avalanche breakdown in both polarities, enabling robust ESD and lightning-induced transient suppression without polarity sensitivity. Its 11.8 V clamping voltage at 50.8 A ensures low-voltage ICs remain within safe operating limits during surge events.
Thermal design relies on its 125 °C/W junction-to-ambient thermal resistance (RθJA) on minimum pad layout and 20 °C/W junction-to-mount (RθJM), supporting reliable operation up to 150 °C junction temperature. The 1.0 W power dissipation at 25 °C ambient and 5.0 W at 50 °C case temperature define steady-state thermal boundaries.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.0 V - maximum continuous reverse stand-off voltage before conduction begins |
| VBR min/max | 6.50 V / 6.97 V at 10 mA - tight ±3.5 % breakdown tolerance ensures predictable turn-on |
| VC @ IPPM | 11.8 V at 50.8 A - clamping voltage defines upper bound of protected circuit stress |
| PPPM | 600 W (10/1000 μs waveform) - peak surge energy handling capacity for transient immunity |
| ID @ VWM | 500 μA - low leakage preserves signal integrity and minimizes standby power loss |
| TJ max | 150 °C - maximum junction temperature rating enables operation in industrial environments |
| Package | SMB (DO-214AA) - surface-mount footprint compatible with automated assembly and IPC-7351B standards |
Pinout & Package
Two-terminal bidirectional device in SMB (DO-214AA) package; no polarity marking required. Terminals are matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102, with M3 suffix indicating halogen-free, RoHS-compliant, industrial-grade construction meeting JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals function identically; bidirectional clamping occurs regardless of voltage polarity |
| Case (body) | Thermal and mechanical interface | Non-electrical; provides thermal path to PCB copper via bottom surface and side terminations |
Key Features
| Feature | Design Value |
|---|---|
| ±3.5 % VBR tolerance | Enables precise clamping threshold control across production lots, reducing design margin uncertainty |
| 600 W peak pulse power | Supports IEC 61000-4-5 Level 4 (4 kV line-to-line) surge immunity without derating |
| MSL Level 1 rating | Allows unlimited floor life and reflow at 260 °C peak without baking or special handling |
| Low 500 μA leakage at VWM | Minimizes loading on high-impedance sensor outputs and battery-powered circuits |
| Halogen-free & RoHS-compliant (M3) | Fulfills environmental compliance requirements for industrial and consumer end equipment |
Applications
| Industrial Sensor Interface Protection | Automotive Body Control Module Inputs |
|---|---|
Use Scenario: Protecting analog voltage outputs of pressure, temperature, or position sensors connected to microcontroller ADC inputs against load dump and ESD. IC Role / Device Role / Timing Role: Bidirectional clamping TVS placed directly at connector or PCB edge to shunt transients before reaching sensitive front-end circuitry. Use Value: Clamps surges to ≤11.8 V while maintaining <500 μA leakage, preserving sensor accuracy and MCU input integrity. | Use Scenario: Safeguarding LIN bus or discrete switch inputs in body control modules exposed to ISO 7637-2 pulse 1, 2a, and 3a transients. IC Role / Device Role / Timing Role: Fast-response transient suppressor installed at module entry point to limit voltage excursions on 12 V supply and signal lines. Use Value: Withstands 600 W surges and operates reliably from −55 °C to +150 °C, meeting automotive under-hood thermal requirements. |
| USB Type-C Power Delivery Line Protection | Telecom DSL Line Interface |
Use Scenario: Guarding VBUS and CC lines in USB-C receptacles against hot-plug induced transients and ESD per IEC 61000-4-2 Level 4. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed adjacent to connector to clamp fast-rising ESD events without distorting high-speed signaling. Use Value: Tight 6.50–6.97 V VBR ensures early conduction before damage thresholds of PD controllers are exceeded. | Use Scenario: Protecting ADSL/VDSL line drivers and receivers from lightning-induced surges on twisted-pair telecom lines. IC Role / Device Role / Timing Role: Primary surge protection device mounted at line interface transformer secondary, absorbing multi-kV transients per ITU-T K.20/K.44. Use Value: 11.8 V clamping voltage prevents saturation of downstream op-amps and maintains signal dynamic range during surge 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 |
|---|---|---|---|
| SMBJ7.0CA-E3/52 | Same VWM (7.0 V), identical SMB package, but ±5 % VBR tolerance (6.3–7.35 V) vs. ±3.5 % | Lower VBR precision reduces clamping predictability in noise-sensitive analog paths | Select SMBJ7.0CD-M3/H when tighter VBR tolerance and M3 halogen-free compliance are required |
| P6SMB7.0CA | Same 7.0 V VWM and bidirectional configuration, but lower 600 W PPPM rating shared across full family; higher typical leakage (1 mA vs. 500 μA) | Higher leakage may affect low-power sensor nodes; same thermal performance but different MSL rating (Level 1 vs. unspecified) | Choose SMBJ7.0CD-M3/H for guaranteed MSL Level 1, JESD 201 Class 2 whisker resistance, and lower leakage |
Compared with SMBJ7.0CA-E3/52 and P6SMB7.0CA, SMBJ7.0CD-M3/H delivers superior VBR tolerance control, lower leakage, and verified industrial-grade reliability attributes - making it preferred for precision analog interfaces and long-lifecycle industrial deployments.
Availability
SMBJ7.0CD-M3/H is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive body electronics, and telecom line protection requiring stable component supply, consistent M3-grade material compliance, and traceable lot-level documentation.
Supply support for SMBJ7.0CD-M3/H 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, precision, and application-specific optimization.
The SMBJ series is engineered for high-energy transient suppression in space-constrained surface-mount applications, targeting industrial automation, automotive subsystems, and communications infrastructure where robustness and repeatability are critical.
FAQ
What is the clamping voltage of SMBJ7.0CD-M3/H and how is it measured?
The SMBJ7.0CD-M3/H has a maximum clamping voltage (VC) of 11.8 V, measured at its rated peak pulse current (IPPM) of 50.8 A using a 10/1000 μs standard surge waveform. This value is guaranteed per Vishay's datasheet 87606 and reflects the voltage across the device during worst-case transient conduction - a critical parameter for ensuring downstream ICs remain within absolute maximum ratings. SMBJ7.0CD-M3/H achieves this clamping performance consistently due to its tightly controlled avalanche characteristics.
Is SMBJ7.0CD-M3/H unidirectional or bidirectional, and how does that affect circuit placement?
SMBJ7.0CD-M3/H is a bidirectional TVS diode, indicated by the "CD" suffix, meaning it provides symmetrical clamping for both positive and negative transients without polarity sensitivity. Unlike unidirectional variants (e.g., SMBJ7.0D), it has no cathode band and can be placed in either orientation on the PCB - simplifying layout and eliminating orientation errors during automated assembly. This makes SMBJ7.0CD-M3/H ideal for AC-coupled lines, differential buses, or any application where voltage polarity reversal is possible.
What does the "M3/H" suffix mean in SMBJ7.0CD-M3/H?
The "M3" suffix denotes halogen-free, RoHS-compliant construction meeting JESD 201 Class 2 whisker resistance, while "H" specifies packaging in 7″ diameter plastic tape and reel with a base quantity of 750 units. This combination confirms SMBJ7.0CD-M3/H meets industrial environmental standards and supports high-volume SMT production. The M3 qualification ensures long-term reliability in thermally cycled applications, and the H reel format aligns with standard pick-and-place feeder requirements - both verified in Vishay document 87606.
Can SMBJ7.0CD-M3/H replace SMBJ7.0D in an existing design?
No - SMBJ7.0CD-M3/H is bidirectional, whereas SMBJ7.0D is unidirectional and features a cathode band for polarity-aware placement. Substituting SMBJ7.0CD-M3/H for SMBJ7.0D would eliminate polarity dependence but may alter clamping behavior in DC-biased circuits, especially where reverse leakage or forward conduction matters. SMBJ7.0CD-M3/H should only replace SMBJ7.0D after verifying system-level surge response, bias conditions, and layout symmetry - it is not a drop-in replacement. Always validate with actual surge testing per IEC 61000-4-5.
What is the thermal resistance and power derating profile of SMBJ7.0CD-M3/H?
SMBJ7.0CD-M3/H has a typical junction-to-ambient thermal resistance (RθJA) of 125 °C/W on minimum recommended PCB pad layout and 100 °C/W on 5.0 mm × 5.0 mm copper area. Its steady-state power dissipation is rated at 1.0 W at 25 °C ambient and derates linearly to 0 W at 150 °C ambient - per Figure 5 in Vishay datasheet 87606. For reliable operation, SMBJ7.0CD-M3/H must be mounted on appropriate copper area and kept below 150 °C junction temperature, especially under repetitive surge conditions.
SMBJ7.0CD-M3/H 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):
- 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)
SMBJ7.0CD-M3/H FAQ
1.How can I place an order for SMBJ7.0CD-M3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ7.0CD-M3/H 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 SMBJ7.0CD-M3/H reliable?
The price and inventory of SMBJ7.0CD-M3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ7.0CD-M3/H is usually 5 days.
3.What payment methods are accepted for SMBJ7.0CD-M3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ7.0CD-M3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ7.0CD-M3/H?
SMBJ7.0CD-M3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ7.0CD-M3/H 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 SMBJ7.0CD-M3/H?
For technical support, including SMBJ7.0CD-M3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ7.0CD-M3/H requirements.
6.How does Aetrix verify that SMBJ7.0CD-M3/H is sourced from the original manufacturer or authorized distributors?
All SMBJ7.0CD-M3/H 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 SMBJ7.0CD-M3/H meets industry standards.
7.What is the process for return or replacement of SMBJ7.0CD-M3/H?
All SMBJ7.0CD-M3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ7.0CD-M3/H, 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 SMBJ7.0CD-M3/H part is unused and in its original packaging.
Return procedure for SMBJ7.0CD-M3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ7.0CD-M3/H Tags
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