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Vishay General Semiconductor - Diodes Division SMBG7.5AHE3/52
- Part No.:
- SMBG7.5AHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG7.5AHE3/52.pdf
- Description:
- TVS DIODE 7.5VWM 12.9VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,091
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Product details
Overview
SMBG7.5AHE3/52 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 7.5 V stand-off voltage (VWM), 8.33–9.21 V breakdown voltage (VBR) at 1.0 mA test current, 12.9 V maximum clamping voltage (VC) at 46.5 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 SMBG7.5AHE3/52 datasheet, SMBG7.5AHE3/52 pinout, SMBG7.5AHE3/52 application, or SMBG7.5AHE3/52 equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 150 °C max junction temperature, low 1.0 μA reverse leakage at VWM, and compatibility with automated SMT placement on standard 0.2" × 0.2" copper pads.
Technical Context
This TVS diode operates as a clamping device that remains high-impedance below 7.5 V and rapidly transitions to low-impedance conduction above its 8.33–9.21 V breakdown threshold. Its glass-passivated junction ensures stable avalanche characteristics and long-term reliability under repetitive surge stress.
The SMBG7.5AHE3/52 delivers 600 W peak pulse power handling with ≤100 ns response time and low incremental surge resistance, enabling effective suppression of ESD (IEC 61000-4-2), EFT (IEC 61000-4-4), and lightning-induced transients (IEC 61000-4-5) in automotive and industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.5 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 8.33 V / 9.21 V at IT = 1.0 mA - Confirmed avalanche onset range for reliable triggering |
| VC @ IPPM | 12.9 V at 46.5 A - Clamped voltage during 10/1000 μs surge, limiting downstream IC stress |
| PPPM | 600 W - Peak transient power dissipation capability without failure |
| ID @ VWM | 1.0 μA - Ultra-low leakage preserves signal integrity and battery life in always-on circuits |
| TJ max | 150 °C - Enables operation in under-hood automotive and high-ambient industrial locations |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability per stress test requirements |
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; cathode indicated by band marking; meets UL 94 V-0 flammability rating and MSL Level 1 (260 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to protected circuit ground or low-side return path | Provides reference node for clamping action; must be routed with low-inductance path to minimize overshoot |
| Cathode | Current exit terminal in forward bias; marked with band; connected to line or signal being protected | Defines unidirectional polarity - reverse connection prevents clamping function and risks device failure |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables single-device protection against ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 surges up to 46.5 A |
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS sensor interfaces |
| Glass passivated junction | Ensures stable VBR tolerance and long-term parametric stability under thermal cycling and humidity stress |
| Low profile SMBG (DO-215AA) package | Supports high-density PCB layouts and automated pick-and-place with JEDEC-compliant footprint |
| 1.0 μA max reverse leakage @ VWM | Minimizes standby power loss in battery-powered systems and avoids false triggering in high-impedance sensing nodes |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V supply inputs in engine control units (ECUs) from load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between battery rail and DC-DC input stage. Use Value: Limits voltage to ≤12.9 V during 46.5 A surge, preventing damage to downstream LDOs and microcontrollers rated for 16 V absolute max. |
Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loop) in factory-floor pressure sensors from EFT and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS mounted at connector interface to shunt fast transients before reaching op-amp conditioning circuitry. Use Value: Sub-100 ns response and 1.0 μA leakage preserve signal fidelity and avoid offset drift in precision measurement paths. |
| Consumer USB Port ESD Protection | Telecom DSL Line Surge Suppression |
Use Scenario: Safeguarding USB VBUS and data lines in portable medical devices against human-body-model (HBM) ESD events. IC Role / Device Role / Timing Role: Standoff-rated TVS on VBUS rail upstream of USB power switch, coordinated with data-line ESD arrays. Use Value: 7.5 V VWM allows full 5 V USB operation while clamping 8 kV HBM strikes to <13 V, protecting USB controller IO cells. |
Use Scenario: Front-end protection of ADSL/VDSL line drivers exposed to lightning-induced surges on outdoor telecom cables. IC Role / Device Role / Timing Role: Primary unidirectional clamp on line-side transformer secondary, paired with gas discharge tube (GDT) for coarse filtering. Use Value: 600 W rating handles multiple 10/1000 μs surges per ITU-T K.20/K.21, extending system field lifetime without derating. |
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-E3/52 | Same VWM/VBR/VC specs but lower 400 W PPPM; SMB (DO-214AA) package with larger footprint | Not AEC-Q101 qualified; suited for commercial-grade consumer/industrial use only | Select when cost sensitivity outweighs automotive qualification and higher surge margin is unnecessary |
| 1.5SMC7.5A | Same electrical specs but in larger SMC (DO-214AB) package; 1.5 kW PPPM rating; no AEC-Q101 certification | Higher thermal mass supports repeated surges in non-automotive power supplies; incompatible with SMBG pad layout | Choose for legacy designs using SMC footprints or where >600 W headroom is required without AEC compliance |
Compared with SMBJ7.5A-E3/52 and 1.5SMC7.5A, the SMBG7.5AHE3/52 uniquely combines AEC-Q101 qualification, 600 W surge capacity, and compact SMBG footprint - making it the only option qualified for space-constrained automotive modules requiring both reliability and high-power transient immunity.
Availability
SMBG7.5AHE3/52 is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface development, and telecom line card prototyping requiring stable component supply and full traceability.
Supply support for SMBG7.5AHE3/52 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 engineered for high-reliability surface-mount transient suppression in automotive and industrial environments, prioritizing AEC-Q101 compliance, low-profile packaging, and consistent clamping performance across temperature and lifetime.
FAQ
What is the clamping voltage of SMBG7.5AHE3/52 under maximum surge conditions?
The SMBG7.5AHE3/52 exhibits a maximum clamping voltage (VC) of 12.9 V when subjected to its rated peak pulse current of 46.5 A with a 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and ensures downstream components see limited overvoltage stress during transient events. The SMBG7.5AHE3/52 maintains this clamping performance across its specified operating temperature range.
Is SMBG7.5AHE3/52 suitable for automotive applications?
Yes, SMBG7.5AHE3/52 is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood and body-control modules. Its 150 °C maximum junction temperature, glass-passivated junction, and robust surge capability meet stringent automotive reliability requirements. The SMBG7.5AHE3/52 is commonly deployed in engine control units, ADAS camera power rails, and infotainment system interfaces.
What does the "HE3" suffix indicate in SMBG7.5AHE3/52?
The "HE3" suffix denotes RoHS-compliant construction with AEC-Q101 qualification and industrial-grade reliability. Specifically, "H" indicates AEC-Q101 qualification, "E3" signifies RoHS compliance and matte tin plating per J-STD-002. The "52" refers to the 7" diameter tape-and-reel packaging format containing 750 units. This distinguishes SMBG7.5AHE3/52 from non-automotive variants like SMBG7.5A-E3/52.
How does SMBG7.5AHE3/52 differ from bidirectional TVS diodes like SMBG7.5CA?
The SMBG7.5AHE3/52 is unidirectional and functions only in reverse-bias clamping mode, with polarity marked by a cathode band. In contrast, SMBG7.5CA is bidirectional and suppresses transients in both directions - useful for AC-coupled or differential signal lines. The SMBG7.5AHE3/52 offers tighter VBR tolerance and lower leakage than its bidirectional counterpart, making it preferred for DC power rail protection.
What is the thermal resistance of SMBG7.5AHE3/52, and how does it affect layout?
The SMBG7.5AHE3/52 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. To maintain safe junction temperatures during repetitive surges, PCB layout must provide adequate copper area and avoid thermal bottlenecks. The SMBG7.5AHE3/52's RθJL of 20 °C/W further emphasizes the importance of short, wide traces to thermal planes.
SMBG7.5AHE3/52 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBG)
SMBG7.5AHE3/52 FAQ
1.How can I place an order for SMBG7.5AHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG7.5AHE3/52 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 SMBG7.5AHE3/52 reliable?
The price and inventory of SMBG7.5AHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG7.5AHE3/52 is usually 5 days.
3.What payment methods are accepted for SMBG7.5AHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG7.5AHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG7.5AHE3/52?
SMBG7.5AHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG7.5AHE3/52 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 SMBG7.5AHE3/52?
For technical support, including SMBG7.5AHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG7.5AHE3/52 requirements.
6.How does Aetrix verify that SMBG7.5AHE3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG7.5AHE3/52 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 SMBG7.5AHE3/52 meets industry standards.
7.What is the process for return or replacement of SMBG7.5AHE3/52?
All SMBG7.5AHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG7.5AHE3/52, 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 SMBG7.5AHE3/52 part is unused and in its original packaging.
Return procedure for SMBG7.5AHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG7.5AHE3/52 Tags
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