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Vishay General Semiconductor - Diodes Division SMBG7.5HE3/5B
- Part No.:
- SMBG7.5HE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG7.5HE3/5B.pdf
- Description:
- TVS DIODE 7.5VWM 14.3VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,565
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Product details
Overview
SMBG7.5HE3/5B from Vishay General Semiconductor is a uni-directional transient voltage suppressor (TVS) diode in DO-215AA (SMBG) package, designed for clamping inductive switching transients and ESD events on power rails and signal lines. It features 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 (IPPM), and 600 W peak pulse power (10/1000 µs waveform). Used in automotive power supply protection and industrial sensor interface circuits.
For engineers reviewing the SMBG7.5HE3/5B datasheet, SMBG7.5HE3/5B pinout, SMBG7.5HE3/5B application, or SMBG7.5HE3/5B equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 150 °C max junction temperature, RoHS-compliant matte tin terminals, and MSL Level 1 reflow compatibility up to 260 °C.
Technical Context
This TVS diode operates as a voltage-clamping protection device in series with sensitive downstream circuitry, conducting only when reverse voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable leakage and fast response (<1 ns), while low incremental surge resistance minimizes clamping overshoot during high-current transients.
The SMBG7.5HE3/5B is rated for repetitive 10/1000 µs surges at 0.01% duty cycle and supports single 8.3 ms half-sine surge currents up to 100 A (IFSM). Thermal resistance is 100 °C/W junction-to-ambient (RθJA) on standard 5.0 mm × 5.0 mm copper pads, enabling reliable operation in compact automotive and industrial PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.5 V - Maximum continuous reverse operating voltage before conduction begins; defines safe DC/AC rail margin. |
| VBR (min/max) | 8.33 V / 9.21 V at IT = 1.0 mA - Confirmed breakdown range ensures consistent turn-on across production lots. |
| VC @ IPPM | 12.9 V at 46.5 A - Clamping voltage under 600 W 10/1000 µs surge; limits stress on protected ICs. |
| PPPM | 600 W - Peak pulse power handling per JEDEC-standard waveform; validates robustness against IEC 61000-4-5 surges. |
| ID @ VWM | 100 µA max - Low reverse leakage preserves efficiency in battery-powered or high-impedance sensing nodes. |
| TJ max | +150 °C - Enables use in under-hood automotive environments and thermally constrained enclosures. |
| AEC-Q101 | Qualified - Meets stress test requirements for automotive electronics, including temperature cycling and HTRB. |
Pinout & Package
DO-215AA (SMBG) surface-mount package with gull-wing leads; cathode indicated by band on body end. Matte tin-plated terminals meet J-STD-002 solderability and JESD 22-B102 mechanical durability standards. MSL Level 1 rating allows single-reflow without dry-packaging.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or lowest potential node; enables clamping of positive transients on cathode side. |
| Cathode | High-side surge input terminal | Connected to protected line (e.g., 12 V rail or CAN-H); conducts surge current to anode during overvoltage. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including HTOL, TC, and HTRB testing per JESD22 standards. |
| Glass passivated junction | Ensures stable VBR and low leakage over temperature and lifetime; eliminates risk of junction corrosion. |
| 600 W peak pulse power (10/1000 µs) | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-earth) without degradation in typical PCB layouts. |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow profiles without preconditioning or moisture-sensitive handling. |
| RoHS-compliant HE3 suffix | Indicates AEC-Q101 qualified, whisker-tested (JESD 201 Class 2), and halogen-free construction. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load-dump and alternator ripple transients. IC Role / Device Role / Timing Role: Uni-directional clamping diode placed between power input and upstream fuse/LDO. Use Value: Limits voltage to ≤12.9 V during 46.5 A surge, preventing damage to MCU power pins and internal regulators. |
Use Scenario: Safeguarding analog front-end inputs of pressure/temperature sensors in PLC modules. IC Role / Device Role / Timing Role: Low-leakage TVS on signal lines (e.g., 4–20 mA loop or RS-485 bus stubs). Use Value: 100 µA max ID at 7.5 V avoids loading high-impedance sensor outputs; fast response prevents latch-up. |
| Consumer Power Adapter Input Stage | Telecom DC Power Entry Protection |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters powering USB-C PD controllers. IC Role / Device Role / Timing Role: Standoff-rated TVS across +5 V output rail to absorb flyback spikes from transformer leakage. Use Value: 7.5 V VWM aligns with 5 V ±10% regulation window; 12.9 V VC stays below absolute max rating of USB-PD ICs. |
Use Scenario: Primary protection for -48 V telecom power feeds entering base station control cards. IC Role / Device Role / Timing Role: Cathode tied to -48 V rail, anode to chassis ground; clamps negative-going surges. Use Value: 150 °C TJ max supports operation in sealed, fanless telecom enclosures; AEC-Q101 grade adds long-term field confidence. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.5AHE3/5B | Same VWM (7.5 V), but SMBJ package (DO-214AA); RθJA = 85 °C/W vs. 100 °C/W for SMBG. | Higher power density; preferred where board space is tighter but thermal pad area is limited. | Select SMBJ7.5AHE3/5B if layout allows smaller footprint and thermal management uses localized copper. |
| 1.5SMC7.5AHE3/A | Same electrical specs, but larger DO-214AB (SMC) package; RθJA = 60 °C/W; IPPM = 49.2 A. | Better thermal performance for high-duty-cycle surges; requires 30% more board area. | Choose 1.5SMC7.5AHE3/A for industrial motor drives with frequent switching transients and ambient >85 °C. |
Compared with SMBG7.5HE3/5B, SMBJ7.5AHE3/5B offers superior thermal resistance in a smaller footprint but lower surge current margin, while 1.5SMC7.5AHE3/A trades size for higher sustained energy handling-making SMBG7.5HE3/5B optimal for space-constrained AEC-Q101 automotive modules requiring balanced surge capability and manufacturability.
Availability
SMBG7.5HE3/5B is available at Aetrix Electronics and suitable for automotive ECU power protection, industrial sensor interface hardening, and telecom DC feed protection requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMBG7.5HE3/5B 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and automotive-grade qualification.
The SMBG series targets surface-mount transient suppression in space-constrained, high-reliability applications-designed specifically for AEC-Q101 compliance, automated assembly, and robust clamping in harsh electromagnetic environments.
FAQ
What is the maximum clamping voltage of SMBG7.5HE3/5B under surge conditions?
The SMBG7.5HE3/5B has a maximum clamping voltage (VC) of 12.9 V at 46.5 A peak pulse current (IPPM), measured using the standardized 10/1000 µs waveform. This value ensures protected downstream ICs-such as automotive MCUs or analog sensors-are exposed to no more than 12.9 V during worst-case transients, well within typical 16 V absolute maximum ratings.
Is SMBG7.5HE3/5B suitable for automotive applications?
Yes, SMBG7.5HE3/5B is AEC-Q101 qualified and explicitly rated for automotive use. Its construction includes glass-passivated junction, matte tin terminals compliant with JESD 22-B102, MSL Level 1 reflow capability, and guaranteed operation from –55 °C to +150 °C-meeting requirements for engine control units, body electronics, and ADAS power domains.
What does the "HE3" suffix indicate in SMBG7.5HE3/5B?
The "HE3" suffix denotes that SMBG7.5HE3/5B is RoHS-compliant, AEC-Q101 qualified, and passes JESD 201 Class 2 whisker testing. It distinguishes this automotive-grade variant from commercial "E3" versions (e.g., SMBG7.5A-E3/5B), which lack AEC-Q101 validation and Class 2 whisker resistance.
How does SMBG7.5HE3/5B differ from bi-directional TVS diodes like SMBG7.5CA?
SMBG7.5HE3/5B is uni-directional and intended for DC rail protection where polarity is fixed (e.g., +12 V to ground), offering lower leakage and sharper knee characteristics. In contrast, SMBG7.5CA is bi-directional-used for AC-coupled or floating lines-and exhibits symmetric clamping in both directions, with higher ID at VWM and different VBR symmetry.
What is the recommended PCB pad layout for SMBG7.5HE3/5B?
Vishay specifies a minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad per terminal for SMBG7.5HE3/5B to achieve rated 600 W pulse power and thermal resistance (RθJA = 100 °C/W). Pad design must follow DO-215AA outline dimensions, maintain solder mask clearance around gull-wing leads, and avoid thermal reliefs on high-current paths to ensure reliable surge conduction.
SMBG7.5HE3/5B 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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 7.5V
- Voltage - Breakdown (Min):
- 8.33V
- Voltage - Clamping (Max) @ Ipp:
- 14.3V
- Current - Peak Pulse (10/1000µs):
- 42A
- 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)
SMBG7.5HE3/5B FAQ
1.How can I place an order for SMBG7.5HE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG7.5HE3/5B 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 SMBG7.5HE3/5B reliable?
The price and inventory of SMBG7.5HE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG7.5HE3/5B is usually 5 days.
3.What payment methods are accepted for SMBG7.5HE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG7.5HE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG7.5HE3/5B?
SMBG7.5HE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG7.5HE3/5B 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 SMBG7.5HE3/5B?
For technical support, including SMBG7.5HE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG7.5HE3/5B requirements.
6.How does Aetrix verify that SMBG7.5HE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG7.5HE3/5B 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 SMBG7.5HE3/5B meets industry standards.
7.What is the process for return or replacement of SMBG7.5HE3/5B?
All SMBG7.5HE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG7.5HE3/5B, 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 SMBG7.5HE3/5B part is unused and in its original packaging.
Return procedure for SMBG7.5HE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG7.5HE3/5B Tags
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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