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Vishay General Semiconductor - Diodes Division SMBG7.0A-M3/52
- Part No.:
- SMBG7.0A-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG7.0A-M3/52.pdf
- Description:
- TVS DIODE 7VWM 12VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,065
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Product details
Overview
SMBG7.0A-M3/52 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMBG (DO-215AA) package, designed for robust overvoltage protection of sensitive electronics. It features a 7.0 V stand-off voltage (VWM), 7.78–8.60 V breakdown voltage (VBR) at 10 mA, 12.0 V maximum clamping voltage (VC) at 50.0 A peak pulse current, and 600 W peak pulse power rating with 10/1000 μs waveform - deployed on power rails and signal lines in automotive ECUs and industrial sensor interfaces.
For engineers reviewing the SMBG7.0A-M3/52 datasheet, SMBG7.0A-M3/52 pinout, SMBG7.0A-M3/52 application, or SMBG7.0A-M3/52 equivalent, key selection criteria include clamping performance under 50 A surge, unidirectional polarity with cathode band marking, halogen-free RoHS compliance (M3 suffix), AEC-Q101 qualification, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VBR, it avalanches to divert transient energy away from downstream ICs. Its glass-passivated junction ensures stable leakage (<800 μA at VWM) and fast response time (<1 ns), while low incremental surge resistance enables effective suppression of ESD and inductive switching spikes.
The SMBG7.0A-M3/52 is rated for -55 °C to +150 °C operating junction temperature, meets MSL Level 1 per J-STD-020 (260 °C peak reflow), and delivers 100 A non-repetitive forward surge capability (8.3 ms half-sine) - confirming suitability for harsh-environment automotive and industrial deployments where thermal reliability and surge margin are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 7.0 V - maximum continuous reverse working voltage before clamping initiates |
| VBR (Breakdown Voltage) | 7.78–8.60 V at 10 mA - precise avalanche onset range defining turn-on threshold |
| VC (Clamping Voltage) | 12.0 V at 50.0 A IPPM - limits protected circuit voltage during 10/1000 μs transients |
| PPPM (Peak Pulse Power) | 600 W - energy-handling capacity under standardized surge waveform |
| IPPM (Peak Pulse Current) | 50.0 A - maximum transient current the device safely clamps without failure |
| TJ max | +150 °C - enables operation in under-hood automotive or high-ambient industrial environments |
| Leakage (ID) | <800 μA at 7.0 V - minimal standby power loss and signal integrity impact |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; polarity marked by cathode band on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to ground or lower-potential rail in unidirectional clamp configuration |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., 12 V supply or CAN_H); band denotes this end |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| Halogen-free & RoHS compliant (M3) | Meets environmental regulations without compromising thermal or electrical performance |
| 600 W peak pulse power (10/1000 μs) | Handles high-energy transients common in 12 V/24 V vehicle systems and industrial motor drives |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes voltage overshoot during clamping - critical for protecting 5 V or 3.3 V logic interfaces |
| MSL Level 1 moisture sensitivity | Enables standard SMT reflow without baking, reducing manufacturing complexity |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protecting microcontroller I/O pins and LIN bus transceivers from load-dump and jump-start surges in BCMs. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between LIN line and ground, triggered within nanoseconds upon overvoltage. Use Value: Clamps transients to ≤12.0 V, preventing damage to 5 V tolerant LIN transceivers while maintaining signal integrity during normal operation. | Use Scenario: Safeguarding 24 V digital input channels in programmable logic controllers against field-wiring induced surges. IC Role / Device Role / Timing Role: Standoff-rated TVS connected across input terminals to absorb repetitive inductive switch-off spikes. Use Value: Withstands 50 A surges at 12.0 V clamping, enabling reliable operation without false triggering or degradation over 100,000+ cycles. |
| Automotive Infotainment Power Rail | Consumer Appliance Motor Driver Interface |
Use Scenario: Shielding USB-C PD controller power inputs from battery line transients in head units. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 5 V/9 V/15 V power path upstream of DC-DC converters. Use Value: 7.0 V VWM allows clean operation under nominal 5 V rail; 12.0 V VC prevents latch-up in downstream PMICs during ISO 7637-2 pulses. | Use Scenario: Protecting gate drivers and MCU GPIOs from back-EMF in washing machine BLDC motor control boards. IC Role / Device Role / Timing Role: Bidirectional-capable unidirectional TVS (used with series resistor) on PWM signal lines to MOSFET gates. Use Value: Fast <1 ns response and 600 W rating suppress 100 ns–1 μs spikes from motor commutation without affecting 20 kHz PWM timing. |
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-M3/52 | Same VWM (7.0 V), but higher VC = 13.3 V at 43.3 A; lower PPPM = 600 W same, but different thermal resistance (RθJA = 85 °C/W vs. 100 °C/W) | SMBJ series uses DO-214AA (SMB) package - slightly larger footprint than SMBG's DO-215AA | Select SMBJ7.0A-M3/52 only if board layout accommodates larger pad area and higher clamping voltage is acceptable |
| SAC7.0-M3/52 | Same VWM (7.0 V), but lower PPPM = 400 W; VC = 12.5 V at 32 A; optimized for lower-cost consumer applications | SAC series lacks AEC-Q101 qualification and has reduced surge margin - not suitable for automotive use | Choose SAC7.0-M3/52 only for cost-sensitive, non-automotive applications with lower surge exposure |
Compared with SMBJ7.0A-M3/52 and SAC7.0-M3/52, the SMBG7.0A-M3/52 offers superior automotive qualification, tighter clamping (12.0 V), and DO-215AA's smaller footprint - making it optimal for space-constrained, AEC-Q101–mandated designs requiring precise voltage limiting.
Availability
SMBG7.0A-M3/52 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O modules, and consumer appliance motor control systems requiring stable component supply, long-term lifecycle support, and halogen-free compliance.
Supply support for SMBG7.0A-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, efficiency, and application-specific optimization.
The SMBG series was developed specifically for high-reliability surface-mount transient suppression in automotive and industrial environments - balancing compact size, AEC-Q101 compliance, and repeatable clamping performance under thermal stress.
FAQ
What is the clamping voltage of SMBG7.0A-M3/52 at its rated peak pulse current?
The SMBG7.0A-M3/52 has a maximum clamping voltage (VC) of 12.0 V at 50.0 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured per Figure 1 in Vishay document 88456 and defines the upper voltage limit imposed on protected circuits during surge events - critical for ensuring compatibility with 5 V or 3.3 V logic interfaces downstream of the SMBG7.0A-M3/52.
Is SMBG7.0A-M3/52 suitable for automotive applications?
Yes, SMBG7.0A-M3/52 is AEC-Q101 qualified and explicitly rated for automotive use per Vishay documentation. Its construction includes glass-passivated junction, MSL Level 1 reflow compatibility, and operation up to +150 °C junction temperature - meeting requirements for engine bay, body control, and infotainment systems. The M3 suffix confirms halogen-free and RoHS compliance required by modern automotive OEMs.
How does the SMBG7.0A-M3/52 differ from the SMBG7.0CA-M3/52?
The SMBG7.0A-M3/52 is unidirectional, with cathode band marking and forward conduction capability, while SMBG7.0CA-M3/52 is bidirectional - symmetrical in both directions with no polarity marking. Their VWM (7.0 V) and VBR ranges are identical, but the CA version applies clamping equally on positive and negative transients, making it suitable for AC-coupled or differential signal lines like RS-485 or CAN, unlike the unidirectional SMBG7.0A-M3/52.
What is the thermal resistance of SMBG7.0A-M3/52, and how does it affect PCB layout?
The SMBG7.0A-M3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes minimum recommended pad layout per Vishay's package drawing; reducing pad area increases thermal impedance and risks exceeding +150 °C junction temperature during repeated surges - so PCB layout must strictly follow the 5.0 mm × 5.0 mm copper pad specification to ensure SMBG7.0A-M3/52 reliability.
Does SMBG7.0A-M3/52 require derating at elevated ambient temperatures?
Yes, SMBG7.0A-M3/52 must be derated above TA = 25 °C per Figure 2 in Vishay document 88456. At 85 °C ambient, its peak pulse power capability drops to approximately 420 W (70 % of 600 W), and at 125 °C, it falls to ~240 W (40 %). This derating directly impacts surge survivability in high-temperature enclosures - system designers must verify worst-case ambient + self-heating stays within the SMBG7.0A-M3/52's thermal envelope to avoid premature failure.
SMBG7.0A-M3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-215AA, SMB Gull Wing
- 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:
- -65°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBG)
SMBG7.0A-M3/52 FAQ
1.How can I place an order for SMBG7.0A-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG7.0A-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 SMBG7.0A-M3/52 reliable?
The price and inventory of SMBG7.0A-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 SMBG7.0A-M3/52 is usually 5 days.
3.What payment methods are accepted for SMBG7.0A-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG7.0A-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG7.0A-M3/52?
SMBG7.0A-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG7.0A-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 SMBG7.0A-M3/52?
For technical support, including SMBG7.0A-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG7.0A-M3/52 requirements.
6.How does Aetrix verify that SMBG7.0A-M3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG7.0A-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 SMBG7.0A-M3/52 meets industry standards.
7.What is the process for return or replacement of SMBG7.0A-M3/52?
All SMBG7.0A-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG7.0A-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 SMBG7.0A-M3/52 part is unused and in its original packaging.
Return procedure for SMBG7.0A-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG7.0A-M3/52 Tags
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