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Vishay General Semiconductor - Diodes Division SMBG7.5A-M3/52
- Part No.:
- SMBG7.5A-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG7.5A-M3/52.pdf
- Description:
- TVS DIODE 7.5VWM 12.9VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,898
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Product details
Overview
SMBG7.5A-M3/52 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 7.5 V stand-off voltage (VWM), 8.33–9.21 V breakdown voltage (VBR) at 1.0 mA, 12.9 V clamping voltage (VC) at 46.5 A peak pulse current, and 600 W peak pulse power rating with 10/1000 μs waveform - deployed in automotive sensor interfaces, industrial I/O protection, and DC power rail surge suppression.
For engineers reviewing the SMBG7.5A-M3/52 datasheet, SMBG7.5A-M3/52 pinout, SMBG7.5A-M3/52 application, or SMBG7.5A-M3/52 equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, halogen-free RoHS compliance, DO-215AA package dimensions, and real-world clamping performance data critical for ESD and lightning surge design validation.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, optimized for fast response to transients induced by inductive switching or ESD events. Its glass-passivated junction ensures stable leakage (<100 μA at VWM) and low incremental surge resistance, enabling precise voltage limiting without forward conduction during normal operation.
The SMBG7.5A-M3/52 is rated for -55 °C to +150 °C junction temperature, meets MSL Level 1 per J-STD-020 (260 °C reflow peak), and delivers 100 A non-repetitive surge current capability (8.3 ms half-sine) - confirming suitability for high-reliability automotive and industrial environments where thermal stability and solderability are essential.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.5 V - maximum continuous reverse operating voltage before clamping begins; defines safe DC bias margin for protected circuitry |
| VBR (min/max) | 8.33 V / 9.21 V at 1.0 mA - guaranteed breakdown threshold range ensuring consistent turn-on across production lots |
| VC @ IPPM | 12.9 V at 46.5 A - clamped voltage under 600 W 10/1000 μs surge; determines worst-case overvoltage seen by downstream ICs |
| PPPM | 600 W - peak pulse power handling capacity; validates protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) |
| IFSM | 100 A - single half-sine surge current rating (8.3 ms); supports high-energy load-dump immunity in 12 V automotive systems |
| TJ max | +150 °C - maximum junction temperature; enables operation in under-hood or enclosed industrial enclosures without derating |
| Package | SMBG (DO-215AA) - surface-mount gull-wing package with 5.0 mm × 5.0 mm copper pad footprint; optimized for automated placement and thermal dissipation |
Pinout & Package
SMBG7.5A-M3/52 uses the SMBG (DO-215AA) package: a low-profile, gull-wing leaded surface-mount case with cathode band marking on the anode-side terminal. Dimensions: 6.48 mm × 3.94 mm × 2.16 mm (L × W × H), 0.76 mm lead thickness, and 2.10 mm lead span. Mounting requires 5.0 mm × 5.0 mm copper pads per terminal per Vishay's recommended layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Protected line connection point | Connected to the line requiring overvoltage clamping; reverse-biased during normal operation; conducts during transient to shunt energy to ground |
| Anode | Reference/ground return path | Typically tied to system ground or low-impedance return plane; completes clamping current path during surge events |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity testing, and mechanical shock - required for engine control, ADAS, and body electronics |
| Halogen-free & RoHS compliant (M3 suffix) | Meets EU Directive 2011/65/EU and JEDEC J-STD-201 Class 2 whisker resistance - suitable for green manufacturing and export-compliant designs |
| 600 W peak pulse power (10/1000 μs) | Provides immunity to ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 Combination Wave surges up to 4 kV without degradation |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage stress on protected MOSFETs or microcontrollers - critical for 5 V and 3.3 V logic-level interfaces |
| Fast response time (<1 ns) | Clamps transients before sensitive components experience damaging voltage overshoot - essential for CAN, LIN, and sensor analog front-ends |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator transients in passenger vehicles. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and ground to clamp surges above 13.5 V while remaining inert during nominal operation. Use Value: Limits peak voltage to 12.9 V during 46.5 A transients, preventing damage to 16 V-rated DC-DC converters and microcontrollers. | Use Scenario: Shielding 4–20 mA current-loop transmitters and analog sensor outputs from ESD and field wiring surges. IC Role / Device Role / Timing Role: Series-connected TVS on signal line to ground, absorbing ±8 kV contact ESD (IEC 61000-4-2) without latch-up. Use Value: Sub-13 V clamping preserves signal integrity for 12-bit ADC inputs and avoids false triggering in precision measurement circuits. |
| Consumer USB Port Surge Suppression | Telecom Line Card Transient Protection |
Use Scenario: Safeguarding USB 2.0 VBUS and D+/D− lines against hot-plug transients and nearby lightning-induced coupling. IC Role / Device Role / Timing Role: Dual-channel TVS array (using discrete SMBG7.5A-M3/52 per line) referenced to common ground. Use Value: 12.9 V clamping prevents damage to USB PHY transceivers rated for 5.5 V absolute maximum, meeting USB-IF ESD requirements. | Use Scenario: Protecting Ethernet PHYs and DSL line drivers from induced surges on twisted-pair telecom lines. IC Role / Device Role / Timing Role: Unidirectional TVS on each differential pair, grounded via low-inductance paths to suppress common-mode transients. Use Value: 600 W pulse rating handles Telcordia GR-1089-CORE Level 3 surges (10/700 μs, 4 kV), maintaining link uptime in outdoor cabinets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.5A-M3/52 | Same VWM (7.5 V), identical SMB package, but lower PPPM = 400 W and higher VC = 13.4 V at 30 A | Less robust for high-energy surges (e.g., automotive load dump); suitable only for lower-tier ESD-only scenarios | Select SMBG7.5A-M3/52 when 600 W surge immunity or tighter clamping (12.9 V vs. 13.4 V) is required |
| SMAJ7.5A-M3/52 | Same VWM, but SMA package (smaller footprint, lower thermal mass); PPPM = 400 W, VC = 13.4 V at 30 A | Lower power handling and reduced thermal margin; not recommended for sustained surge duty cycles or high ambient temperatures | Choose SMBG7.5A-M3/52 for applications demanding higher surge endurance, AEC-Q101 qualification, or DO-215AA mechanical robustness |
Compared with SMBJ7.5A-M3/52 and SMAJ7.5A-M3/52, SMBG7.5A-M3/52 delivers 50 % higher peak pulse power, 0.5 V lower clamping voltage, and full AEC-Q101 qualification - making it the preferred choice for mission-critical automotive and industrial surge protection where reliability and margin are non-negotiable.
Availability
SMBG7.5A-M3/52 is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor modules, and telecom infrastructure requiring stable component supply, halogen-free compliance, and AEC-Q101 reliability assurance.
Supply support for SMBG7.5A-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 high-reliability, automotive-qualified, and industry-standard solutions.
The SMBG series is engineered specifically for high-power transient suppression in harsh environments - targeting automotive power distribution, industrial automation I/O, and telecom line protection where 600 W surge capability and AEC-Q101 validation are mandatory.
FAQ
What is the clamping voltage of SMBG7.5A-M3/52 and how is it measured?
The SMBG7.5A-M3/52 has a maximum clamping voltage (VC) of 12.9 V at 46.5 A peak pulse current, tested with a 10/1000 μs waveform per IEC 61000-4-5. This value represents the highest voltage imposed on the protected line during a standardized surge event and is measured across the device terminals under specified test conditions - critical for verifying compatibility with downstream 5 V or 3.3 V ICs.
Is SMBG7.5A-M3/52 qualified for automotive applications?
Yes, SMBG7.5A-M3/52 is AEC-Q101 qualified, meaning it has passed rigorous stress tests including temperature cycling, high-temperature operating life, and mechanical shock - validating its use in automotive powertrain, chassis, and body electronics. The M3 suffix further confirms halogen-free, RoHS-compliant construction required for modern vehicle platforms.
What does the "M3" suffix mean in SMBG7.5A-M3/52?
The "M3" suffix in SMBG7.5A-M3/52 indicates halogen-free, RoHS-compliant construction with matte tin-plated leads that meet JESD 201 Class 2 whisker resistance requirements. It also signifies industrial-grade qualification and compatibility with standard SMT reflow profiles up to 260 °C peak (MSL Level 1).
How does SMBG7.5A-M3/52 differ from bidirectional TVS diodes like SMBG7.5CA-M3/52?
SMBG7.5A-M3/52 is unidirectional and features a cathode band for polarity-sensitive placement, while SMBG7.5CA-M3/52 is bidirectional with no polarity marking and symmetric clamping in both directions. The unidirectional version offers lower leakage and better performance in DC-biased applications such as power rail protection, whereas the CA variant suits AC-coupled or floating signal lines.
What is the thermal resistance of SMBG7.5A-M3/52 and why does it matter?
SMBG7.5A-M3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 5.0 mm × 5.0 mm copper pads. This parameter determines how much the junction temperature rises under power dissipation - crucial for predicting long-term reliability during repetitive surge events and ensuring operation stays within the -55 °C to +150 °C rated range.
SMBG7.5A-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):
- 7.5V
- Voltage - Breakdown (Min):
- 8.33V
- Voltage - Clamping (Max) @ Ipp:
- 12.9V
- Current - Peak Pulse (10/1000µs):
- 46.5A
- 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)
SMBG7.5A-M3/52 FAQ
1.How can I place an order for SMBG7.5A-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG7.5A-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 SMBG7.5A-M3/52 reliable?
The price and inventory of SMBG7.5A-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 SMBG7.5A-M3/52 is usually 5 days.
3.What payment methods are accepted for SMBG7.5A-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG7.5A-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG7.5A-M3/52?
SMBG7.5A-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG7.5A-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 SMBG7.5A-M3/52?
For technical support, including SMBG7.5A-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG7.5A-M3/52 requirements.
6.How does Aetrix verify that SMBG7.5A-M3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG7.5A-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 SMBG7.5A-M3/52 meets industry standards.
7.What is the process for return or replacement of SMBG7.5A-M3/52?
All SMBG7.5A-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG7.5A-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 SMBG7.5A-M3/52 part is unused and in its original packaging.
Return procedure for SMBG7.5A-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG7.5A-M3/52 Tags
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