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Vishay General Semiconductor - Diodes Division SMBJ7.0A-M3/52
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- Part No.:
- SMBJ7.0A-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ7.0A-M3/52.pdf
- Description:
- TVS DIODE 7VWM 12VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,500
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Product details
Overview
SMBJ7.0A-M3/52 from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping inductive switching transients and ESD events on DC power rails and signal lines. It features 7.78 V minimum breakdown voltage (VBR), 12.0 V maximum clamping voltage (VC) at 50.0 A peak pulse current (IPPM), and 600 W peak pulse power rating with 10/1000 µs waveform - deployed in automotive sensor protection and industrial I/O interface circuits.
For engineers reviewing the SMBJ7.0A-M3/52 datasheet, SMBJ7.0A-M3/52 pinout, SMBJ7.0A-M3/52 application, or SMBJ7.0A-M3/52 equivalent, this page delivers verified electrical parameters, thermal derating behavior, junction-to-lead resistance, polarity marking convention, and halogen-free RoHS-compliant sourcing status per Vishay's M3 suffix specification.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity identification, leveraging a glass-passivated silicon junction to achieve sub-nanosecond response time and low incremental surge resistance. Its 7.0 V stand-off voltage (VWM) ensures reliable blocking during normal operation while allowing fast transition into avalanche conduction when transients exceed VBR (7.78–8.60 V at 10 mA).
Thermal performance is defined by RθJL = 20 °C/W (junction-to-lead) and RθJA = 100 °C/W (junction-to-ambient on 0.2" × 0.2" copper pads), supporting continuous power dissipation of 5.0 W at TA = 50 °C. The device meets MSL Level 1 per J-STD-020 and withstands 100 A non-repetitive forward surge (8.3 ms half-sine) per IEC 61000-4-5.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.0 V - Maximum reverse working voltage before leakage exceeds 200 µA; defines safe DC operating margin. |
| VBR (min/max) | 7.78 V / 8.60 V at 10 mA - Ensures consistent avalanche initiation across production lots under standardized test conditions. |
| VC @ IPPM | 12.0 V at 50.0 A - Clamped voltage during 10/1000 µs transient; determines protected circuit's maximum overvoltage exposure. |
| PPPM | 600 W - Peak pulse power handling capability; validates robustness against lightning-induced surges per IEC 61000-4-5. |
| IFSM | 100 A - Single half-sine surge rating (8.3 ms); supports high-energy inductive kickback suppression in relay/motor drivers. |
| TJ max. | +150 °C - Maximum junction temperature; enables operation in under-hood automotive and industrial ambient environments. |
| Package | SMB (DO-214AA) - Surface-mount outline with 0.220" × 0.155" footprint; compatible with automated pick-and-place and reflow soldering. |
Pinout & Package
Package: SMB (DO-214AA), halogen-free, RoHS-compliant, matte tin-plated leads. Cathode identified by black band; anode is unmarked end. Meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient clamp output node | Connected to protected line; conducts avalanche current to ground during overvoltage events. |
| Anode (unbanded end) | Reference/return path | Typically tied to system ground or low-impedance return plane; completes clamping current path. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Validates compliance with IEC 61000-4-5 Level 4 surge immunity testing for industrial equipment. |
| Clamping voltage ≤12.0 V at 50 A | Ensures downstream 5 V logic ICs (e.g., microcontrollers, CAN transceivers) remain within absolute maximum ratings during transients. |
| Low incremental surge resistance | Minimizes VC overshoot and energy dissipation during fast-rising transients (<1 ns rise time). |
| MSL Level 1 moisture sensitivity | Enables direct placement without baking; supports standard SMT reflow profiles up to 260 °C peak. |
| Halogen-free, RoHS-compliant (M3 suffix) | Fulfills EU Directive 2011/65/EU and IPC-1752A material declaration requirements for green electronics manufacturing. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting 5 V supply rail of wheel speed sensors exposed to load dump and ISO 7637-2 pulses in engine compartments. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between sensor VCC and chassis ground. Use Value: Limits transient voltage to ≤12.0 V, preventing latch-up or gate oxide damage in ASIC-based sensor signal conditioners. |
Use Scenario: Safeguarding 24 V digital input channels in programmable logic controllers subjected to field-wiring induced surges. IC Role / Device Role / Timing Role: Standoff-clamp TVS on input front-end, upstream of optocoupler or Schmitt trigger. Use Value: Absorbs 600 W surges without degradation, maintaining channel integrity across 100,000+ surge cycles per IEC 61000-4-5. |
| Consumer Power Adapter ESD Clamp | Telecom Line Interface Surge Suppression |
|
Use Scenario: ESD protection on 5 V USB VBUS line in wall adapters meeting IEC 61000-4-2 ±15 kV contact discharge. IC Role / Device Role / Timing Role: Primary-level TVS on secondary-side DC output, adjacent to connector. Use Value: Sub-ns response clamps ESD events to <12.0 V, preventing damage to USB controller ICs and pass-through power switches. |
Use Scenario: Secondary-side transient suppression on 48 V phantom power lines in VoIP phones and IP-PBX systems. IC Role / Device Role / Timing Role: Unidirectional clamping device between PSE output and internal DC-DC converter input. Use Value: Withstands repeated 10/1000 µs surges up to 600 W while maintaining <200 µA leakage at 7.0 V standby. |
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-E3/52 | Same electrical specs; RoHS-compliant but not halogen-free (E3 vs. M3). | Preferred for commercial-grade designs where halogen content is unrestricted. | Select E3 for cost-sensitive consumer applications; M3 required for automotive or green-certified industrial programs. |
| SMAJ7.0A-M3 | Lower PPPM (400 W), higher VC (12.5 V), smaller SMA package (DO-214AC). | Used where board space is constrained but surge energy is lower (e.g., low-power IoT nodes). | Choose SMAJ7.0A-M3 only if 400 W rating suffices and PCB layout cannot accommodate SMB footprint. |
Compared with SMBJ7.0A-E3/52, the M3 variant adds halogen-free compliance without sacrificing clamping performance or thermal capability; versus SMAJ7.0A-M3, SMBJ7.0A-M3/52 provides +50 % surge energy margin and lower clamping voltage in a thermally superior package.
Availability
SMBJ7.0A-M3/52 is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, consumer power adapters, and telecom line interfaces requiring stable component supply and halogen-free compliance.
Supply support for SMBJ7.0A-M3/52 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 validation.
The SMBJ series targets high-energy transient suppression in harsh environments, engineered for automotive AEC-Q101 qualification readiness and industrial surge immunity standards including IEC 61000-4-5.
FAQ
What is the maximum clamping voltage of SMBJ7.0A-M3/52 under standard test conditions?
The SMBJ7.0A-M3/52 has a maximum clamping voltage (VC) of 12.0 V when subjected to a 10/1000 µs waveform at 50.0 A peak pulse current (IPPM). This value is measured per ANSI/IEEE C62.35 and confirmed in Vishay's Document Number 88392, ensuring predictable overvoltage limiting for downstream 5 V logic components in the SMBJ7.0A-M3/52 protection network.
Does SMBJ7.0A-M3/52 meet automotive qualification standards?
The SMBJ7.0A-M3/52 itself is commercial-grade (M3 suffix), not AEC-Q101 qualified. However, its automotive-qualified counterpart is SMBJ7.0AHM3_X (e.g., SMBJ7.0AHM3_B/H), which shares identical electrical specs but adds AEC-Q101 stress testing. For non-automotive industrial or consumer use, SMBJ7.0A-M3/52 delivers full performance with halogen-free compliance - confirmed in Vishay's ordering information table on page 3 of document 88392.
How does the M3 suffix differ from E3 in SMBJ7.0A-M3/52?
The M3 suffix in SMBJ7.0A-M3/52 denotes halogen-free, RoHS-compliant construction, whereas E3 indicates RoHS-compliant but standard brominated flame retardant molding compound. Both share identical electrical characteristics, thermal ratings, and SMB package dimensions. The M3 variant satisfies stricter environmental mandates such as JEDEC J-STD-20 and IPC-1752A for green electronics - explicitly stated in the "MECHANICAL DATA" section of Vishay's 88392 datasheet.
What is the thermal resistance from junction to lead for SMBJ7.0A-M3/52?
The SMBJ7.0A-M3/52 has a typical thermal resistance from junction to lead (RθJL) of 20 °C/W, as specified in the "THERMAL CHARACTERISTICS" table on page 3 of Vishay's Document Number 88392. This parameter enables accurate junction temperature estimation during high-duty-cycle surge events and confirms suitability for solder-reflow assembly with minimal thermal stress on the SMBJ7.0A-M3/52 die structure.
Can SMBJ7.0A-M3/52 be used in bidirectional transient protection circuits?
No - SMBJ7.0A-M3/52 is strictly unidirectional, indicated by its "A" suffix and cathode-band marking. Bidirectional variants use the "CA" suffix (e.g., SMBJ7.0CA). Using SMBJ7.0A-M3/52 in bidirectional applications risks reverse-bias breakdown during negative transients. Vishay explicitly states in the "DEVICES FOR BIDIRECTION APPLICATIONS" section that CA-suffix parts must be selected for symmetrical clamping - a requirement the SMBJ7.0A-M3/52 does not fulfill.
SMBJ7.0A-M3/52 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):
- 7.78V
- 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 (SMBJ)
SMBJ7.0A-M3/52 FAQ
1.How can I place an order for SMBJ7.0A-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ7.0A-M3/52 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 SMBJ7.0A-M3/52 reliable?
The price and inventory of SMBJ7.0A-M3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ7.0A-M3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ7.0A-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ7.0A-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ7.0A-M3/52?
SMBJ7.0A-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ7.0A-M3/52 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 SMBJ7.0A-M3/52?
For technical support, including SMBJ7.0A-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ7.0A-M3/52 requirements.
6.How does Aetrix verify that SMBJ7.0A-M3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ7.0A-M3/52 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 SMBJ7.0A-M3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ7.0A-M3/52?
All SMBJ7.0A-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ7.0A-M3/52, 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 SMBJ7.0A-M3/52 part is unused and in its original packaging.
Return procedure for SMBJ7.0A-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ7.0A-M3/52 Tags
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