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Vishay General Semiconductor - Diodes Division SMBG8.0HE3/5B
- Part No.:
- SMBG8.0HE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG8.0HE3/5B.pdf
- Description:
- TVS DIODE 8VWM 15VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,751
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Product details
Overview
SMBG8.0HE3/5B 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 8.0 V stand-off voltage (VWM), 8.89–9.83 V breakdown voltage (VBR) at 1 mA, 13.6 V maximum clamping voltage (VC) at 44.1 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 SMBG8.0HE3/5B datasheet, SMBG8.0HE3/5B pinout, SMBG8.0HE3/5B application, or SMBG8.0HE3/5B equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 150 °C junction temperature rating, RoHS-compliant matte tin terminals, and MSL Level 1 moisture sensitivity.
Technical Context
This device operates as a voltage-clamping protector with avalanche breakdown behavior, responding to transients within <1 ps. Its glass-passivated junction ensures stable VBR tolerance and low leakage (<1.0 µA at VWM), while the DO-215AA package provides thermal resistance of 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead).
The SMBG8.0HE3/5B is rated for 100 A non-repetitive forward surge current (IFSM, 8.3 ms half-sine), supports operation from –55 °C to +150 °C, and meets UL 94 V-0 flammability requirements. The HE3 suffix confirms AEC-Q101 qualification and JESD 201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 8.0 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 8.89 V / 9.83 V at 1 mA - Ensures predictable avalanche initiation across production lot |
| VC @ IPPM | 13.6 V at 44.1 A - Clamped voltage during 600 W transient, limiting stress on downstream ICs |
| PPPM | 600 W (10/1000 µs) - Sustains high-energy surges common in automotive load-dump and inductive kick scenarios |
| TJ max. | +150 °C - Enables use in under-hood automotive environments and high-temperature industrial enclosures |
| Polarity | Uni-directional - Cathode marked band enables correct orientation in DC-biased protection paths |
| Qualification | AEC-Q101 qualified - Validated for automotive electronic control units requiring reliability under thermal cycling and vibration |
Pinout & Package
Package: DO-215AA (SMBG), surface-mount gull-wing, 2-terminal configuration. Dimensions: 4.57 mm × 3.94 mm × 2.10 mm (L × W × H); cathode band marks terminal 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 (cathode band) | Anode connection for reverse-biased clamping path | Connected to protected line; clamps when voltage exceeds VBR relative to ground |
| Terminal 2 (anode) | Cathode connection for reverse-biased clamping path | Typically tied to system ground or low-impedance return path to complete clamping loop |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Withstands automotive load-dump pulses without degradation, per ISO 7637-2 Pulse 5a |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, mechanical shock, and humidity testing |
| Glass passivated junction | Ensures long-term VBR stability and low leakage drift over time and temperature |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without preconditioning or baking |
| RoHS-compliant matte tin plating | Meets J-STD-002 solderability and JESD 22-B102 intermetallic formation requirements |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load-dump transients up to 35 V and inductive switching spikes. IC Role / Device Role / Timing Role: Uni-directional TVS placed between power rail and chassis ground to clamp positive-going surges only. Use Value: Limits voltage seen by downstream LDOs and microcontrollers to ≤13.6 V during 600 W transients, preventing latch-up or oxide damage. |
Use Scenario: Safeguarding analog outputs of pressure/temperature sensors connected to PLC I/O modules. IC Role / Device Role / Timing Role: Standoff-rated clamping device on 24 V sensor supply line, absorbing field-wiring induced surges. Use Value: Maintains signal integrity by suppressing >1 kV fast transients while adding <0.5 pF capacitance, avoiding bandwidth reduction. |
| Consumer Power Adapter Input Protection | Telecom Line Card Surge Suppression |
Use Scenario: Secondary-side overvoltage protection in AC/DC adapters powering USB-C PD controllers. IC Role / Device Role / Timing Role: Final-stage clamping element after primary-side isolation, guarding against secondary-side fault propagation. Use Value: Responds in <1 ps to limit post-regulator rail excursions, enabling use of lower-voltage-rated MOSFETs and capacitors. |
Use Scenario: Front-end transient suppression on -48 V telecom power feeds entering line cards. IC Role / Device Role / Timing Role: Uni-directional clamp referenced to negative rail, protecting DC-DC converters and monitoring ICs. Use Value: Withstands repeated 10/1000 µs surges up to 600 W without parameter shift, supporting GR-1089-CORE compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ8.0AHE3/5B | Same VWM (8.0 V), but higher IPPM (50 A vs. 44.1 A) and lower VC (12.0 V vs. 13.6 V); identical DO-214AA (SMB) package footprint | Higher clamping performance suits tighter voltage margins; SMB package has slightly higher RθJA (120 °C/W) | Select SMBJ8.0AHE3/5B if board layout allows SMB footprint and lower clamping voltage is required. |
| 1.5SMC8.0AHE3/A | Same electrical specs (VWM = 8.0 V, VC = 13.6 V), but larger DO-214AB (SMC) package; RθJA = 40 °C/W improves thermal handling | Higher thermal mass supports repetitive surge duty cycles; not suitable for space-constrained layouts | Choose 1.5SMC8.0AHE3/A where sustained surge energy or elevated ambient temperatures exceed SMBG limits. |
Compared with SMBG8.0HE3/5B, SMBJ8.0AHE3/5B offers tighter clamping but less thermal margin, while 1.5SMC8.0AHE3/A trades size for superior thermal robustness-selection depends on PCB area, thermal environment, and clamping voltage budget.
Availability
SMBG8.0HE3/5B 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 AEC-Q101 traceability.
Supply support for SMBG8.0HE3/5B 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, and protection devices with emphasis on reliability and automotive qualification.
The SMBG series was developed specifically for high-reliability surface-mount transient suppression in space-constrained automotive and industrial systems, balancing low profile, AEC-Q101 compliance, and 600 W surge capability.
FAQ
What is the clamping voltage of SMBG8.0HE3/5B at its rated peak pulse current?
The SMBG8.0HE3/5B exhibits a maximum clamping voltage (VC) of 13.6 V when subjected to its rated peak pulse current (IPPM) of 44.1 A under the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees consistent overvoltage limiting across production lots, critical for safeguarding 12 V logic and power ICs.
Is SMBG8.0HE3/5B suitable for automotive applications?
Yes, SMBG8.0HE3/5B is AEC-Q101 qualified and explicitly rated for automotive use. Its construction includes glass-passivated junction, matte tin-plated leads compliant with JESD 201 Class 2 whisker resistance, and operation up to +150 °C junction temperature-meeting requirements for engine control, body electronics, and ADAS subsystems.
What does the "HE3" suffix indicate in SMBG8.0HE3/5B?
The "HE3" suffix in SMBG8.0HE3/5B denotes RoHS-compliant construction with AEC-Q101 qualification and JESD 201 Class 2 whisker resistance. It distinguishes this automotive-grade variant from commercial "E3" versions and confirms compliance with automotive reliability test standards including temperature cycling and mechanical shock.
How does SMBG8.0HE3/5B differ from bi-directional TVS diodes like SMBG8.0CA?
SMBG8.0HE3/5B is uni-directional and features a cathode band for polarity-sensitive placement, whereas SMBG8.0CA is bi-directional with no marking and symmetrical clamping in both polarities. The uni-directional SMBG8.0HE3/5B delivers lower leakage (<1.0 µA) and tighter VBR tolerance, making it preferred for DC-biased rails where reverse conduction must be blocked.
What is the thermal resistance of SMBG8.0HE3/5B, and how does it affect layout?
SMBG8.0HE3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 5.0 mm × 5.0 mm copper pads per terminal. To maintain TJ ≤ 150 °C under 600 W pulses, designers must ensure adequate copper area and avoid excessive trace length-especially critical in high-duty-cycle surge environments.
SMBG8.0HE3/5B 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):
- 8V
- Voltage - Breakdown (Min):
- 8.89V
- Voltage - Clamping (Max) @ Ipp:
- 15V
- Current - Peak Pulse (10/1000µs):
- 40A
- 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)
SMBG8.0HE3/5B FAQ
1.How can I place an order for SMBG8.0HE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG8.0HE3/5B 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 SMBG8.0HE3/5B reliable?
The price and inventory of SMBG8.0HE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG8.0HE3/5B is usually 5 days.
3.What payment methods are accepted for SMBG8.0HE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG8.0HE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG8.0HE3/5B?
SMBG8.0HE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG8.0HE3/5B 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 SMBG8.0HE3/5B?
For technical support, including SMBG8.0HE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG8.0HE3/5B requirements.
6.How does Aetrix verify that SMBG8.0HE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG8.0HE3/5B 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 SMBG8.0HE3/5B meets industry standards.
7.What is the process for return or replacement of SMBG8.0HE3/5B?
All SMBG8.0HE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG8.0HE3/5B, 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 SMBG8.0HE3/5B part is unused and in its original packaging.
Return procedure for SMBG8.0HE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG8.0HE3/5B Tags
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