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Vishay General Semiconductor - Diodes Division SMBG7.5AHE3/5B
- Part No.:
- SMBG7.5AHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG7.5AHE3/5B.pdf
- Description:
- TVS DIODE 7.5VWM 12.9VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,136
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Product details
Overview
SMBG7.5AHE3/5B 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 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 (IPPM), and 600 W peak pulse power (10/1000 μs waveform). It is AEC-Q101 qualified and used to protect MOSFETs, ICs, and sensor signal lines in automotive and industrial power systems.
For engineers reviewing the SMBG7.5AHE3/5B datasheet, SMBG7.5AHE3/5B pinout, SMBG7.5AHE3/5B application, or SMBG7.5AHE3/5B equivalent, key selection criteria include clamping performance under 46.5 A surge, unidirectional polarity with cathode band marking, RoHS-compliant 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 fast-acting shunt protector, responding within picoseconds to transient overvoltages induced by inductive switching or ESD events. Its glass-passivated junction ensures stable breakdown behavior and low incremental surge resistance, while its low-profile SMBG package supports high-density PCB layouts and meets MSL level 1 reflow requirements (260 °C peak).
The device is rated for -55 °C to +150 °C operating junction temperature, with thermal resistance of 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead). It delivers 600 W peak pulse power at 25 °C, derating linearly above that temperature per Figure 2 in the datasheet, and supports repetitive surges at 0.01 % duty cycle.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.5 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working range for protected circuitry. |
| VBR (min/max) | 8.33 V / 9.21 V at IT = 1.0 mA - Ensures reliable turn-on within tight tolerance during transients; critical for predictable clamping onset. |
| VC @ IPPM | 12.9 V at 46.5 A - Clamped voltage seen by downstream components during worst-case 10/1000 μs surge; limits stress on protected ICs. |
| PPPM | 600 W - Peak transient energy absorption capability; determines survivability against lightning or load-dump events. |
| IFSM | 100 A - Non-repetitive forward surge rating (8.3 ms half-sine); supports protection during high-energy inrush or fault conditions. |
| Junction Temp | -55 °C to +150 °C - Enables deployment in under-hood automotive and industrial environments without thermal derating penalties. |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, low-profile gull-wing leadframe with matte tin-plated terminals solderable per J-STD-002 and JESD 22-B102. Cathode identified by molded band; no polarity marking on bidirectional variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to ground or low-side reference in unidirectional configuration | Completes conduction path during transient clamp; must be routed with low-inductance trace to minimize VPEAK overshoot. |
| Cathode | Current exit point in forward bias; marked by band; connected to protected line (e.g., power rail or signal) | Defines polarity-sensitive placement; incorrect orientation disables protection and risks catastrophic failure under reverse surge. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing-enables use in engine control, ADAS, and body electronics without additional qualification. |
| Glass passivated junction | Provides stable VBR tolerance and long-term leakage stability (<1.0 μA at VWM), reducing risk of false triggering or drift over lifetime. |
| 600 W peak pulse power (10/1000 μs) | Supports IEC 61000-4-5 Level 4 surge immunity (4 kV line-to-earth) when properly laid out-meets stringent industrial and automotive EMC requirements. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow profile up to 260 °C peak-eliminates baking steps and simplifies SMT manufacturing flow. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump transients (ISO 16750-2) and alternator ripple. IC Role / Device Role / Timing Role: Shunt clamping element placed between power rail and chassis ground; activates within <1 ns to limit voltage to ≤12.9 V. Use Value: Prevents latch-up or gate oxide damage in MCU power supplies and CAN transceivers during 120 V/400 ms load dump events. | Use Scenario: Safeguarding analog outputs of pressure/temperature sensors in PLC I/O modules exposed to field wiring surges. IC Role / Device Role / Timing Role: Low-capacitance (typ. 1000 pF at 0 V) parallel clamp on 4–20 mA or 0–10 V signal paths. Use Value: Maintains signal integrity below 12.9 V clamping threshold while adding <0.5 pF parasitic capacitance-no bandwidth degradation in sub-MHz sensor interfaces. |
| Consumer Device USB Port Protection | Telecom Base Station DC Power Input |
Use Scenario: ESD and cable discharge protection on USB VBUS lines in portable medical monitors and smart home hubs. IC Role / Device Role / Timing Role: First-line defense against ±15 kV contact ESD (IEC 61000-4-2); placed upstream of USB power switch IC. Use Value: Clamps transients to 12.9 V within nanoseconds, preventing damage to USB PD controllers and maintaining compliance with USB-IF electrical specs. | Use Scenario: Secondary surge suppression on -48 V DC input of telecom remote radio units subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Coordinated clamping stage with upstream MOVs; handles residual energy after primary diversion. Use Value: Delivers 600 W pulse handling at -48 V system level with 100 A IFSM, enabling compact, two-stage protection architecture without thermal runaway risk. |
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-E3/5B | Same SMB package, identical VWM/VC, but lower PPPM (600 W vs. SMBJ's 600 W - same rating), different marking code and JEDEC registration; not AEC-Q101 qualified. | Approved for commercial/industrial use only; unsuitable for automotive OEM designs requiring AEC-Q101 evidence. | Select SMBG7.5AHE3/5B when automotive qualification, extended temperature operation, or traceable AEC-Q101 test reports are required. |
| 1.5SMC7.5A | Higher package thermal resistance (RθJA = 125 °C/W vs. 100 °C/W), larger SMC (DO-214AB) footprint, same electrical specs; RoHS compliant but not AEC-Q101 qualified. | Requires more PCB area and exhibits higher junction temperature rise under repeated surges-less suitable for space-constrained automotive modules. | Choose SMBG7.5AHE3/5B for high-density layouts, automotive qualification, and superior thermal performance in confined enclosures. |
Compared with SMBJ7.5A-E3/5B and 1.5SMC7.5A, SMBG7.5AHE3/5B uniquely combines AEC-Q101 qualification, SMBG's optimized thermal resistance (20 °C/W junction-to-lead), and industry-standard gull-wing leadform-making it the preferred choice for automotive and high-reliability industrial designs where qualification, layout density, and thermal margin are jointly critical.
Availability
SMBG7.5AHE3/5B is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and telecom DC input surge suppression requiring stable component supply across multi-year production cycles.
Supply support for SMBG7.5AHE3/5B 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, rectifiers, TVS devices, and optoelectronics with emphasis on reliability, precision, and application-specific optimization.
The SMBG series was engineered specifically for high-reliability transient suppression in automotive and industrial environments, delivering AEC-Q101 qualification, low-profile packaging, and consistent clamping performance across temperature and lifetime.
FAQ
What is the maximum clamping voltage of SMBG7.5AHE3/5B and under what test condition?
The SMBG7.5AHE3/5B has a maximum clamping voltage (VC) of 12.9 V, measured at a peak pulse current (IPPM) of 46.5 A using the standardized 10/1000 μs double-exponential surge waveform. This value is guaranteed across the full operating temperature range and reflects worst-case voltage seen by protected circuitry during transient events.
Is SMBG7.5AHE3/5B suitable for automotive applications?
Yes, SMBG7.5AHE3/5B is AEC-Q101 qualified and explicitly rated for automotive use. Its construction includes glass-passivated junction, MSL Level 1 moisture sensitivity, and operation from -55 °C to +150 °C junction temperature-meeting requirements for engine control units, body electronics, and ADAS subsystems per ISO 16750 and ISO 7637 standards.
What does the "HE3" suffix indicate in SMBG7.5AHE3/5B?
The "HE3" suffix in SMBG7.5AHE3/5B denotes RoHS-compliant construction with AEC-Q101 qualification. Per Vishay's ordering nomenclature, "HE3" identifies the industrial-grade, halogen-free, RoHS-compliant variant that has passed full AEC-Q101 stress testing-distinguishing it from non-qualified "E3" or "M3" versions.
How does the SMBG7.5AHE3/5B differ from the SMBJ7.5A series in terms of package and performance?
SMBG7.5AHE3/5B uses the SMBG (DO-215AA) package with gull-wing leads, while SMBJ7.5A uses SMB (DO-214AA) with J-bend leads. Both offer 600 W PPPM and similar VC, but SMBG7.5AHE3/5B provides AEC-Q101 qualification, lower RθJA (100 °C/W), and tighter VBR tolerance-making it superior for automotive and thermally constrained designs.
What is the recommended PCB pad layout for SMBG7.5AHE3/5B to achieve rated 600 W pulse power?
To achieve the full 600 W peak pulse power rating, SMBG7.5AHE3/5B must be mounted on minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in the Vishay datasheet. Smaller pads reduce thermal dissipation and cause premature thermal runaway during repetitive surges-verified via derating curves in Figure 2.
SMBG7.5AHE3/5B 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:
- 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)
SMBG7.5AHE3/5B FAQ
1.How can I place an order for SMBG7.5AHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG7.5AHE3/5B 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 SMBG7.5AHE3/5B reliable?
The price and inventory of SMBG7.5AHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG7.5AHE3/5B is usually 5 days.
3.What payment methods are accepted for SMBG7.5AHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG7.5AHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG7.5AHE3/5B?
SMBG7.5AHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG7.5AHE3/5B 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 SMBG7.5AHE3/5B?
For technical support, including SMBG7.5AHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG7.5AHE3/5B requirements.
6.How does Aetrix verify that SMBG7.5AHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG7.5AHE3/5B 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 SMBG7.5AHE3/5B meets industry standards.
7.What is the process for return or replacement of SMBG7.5AHE3/5B?
All SMBG7.5AHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG7.5AHE3/5B, 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 SMBG7.5AHE3/5B part is unused and in its original packaging.
Return procedure for SMBG7.5AHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG7.5AHE3/5B Tags
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