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Vishay General Semiconductor - Diodes Division SMBG8.0A-M3/5B
- Part No.:
- SMBG8.0A-M3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG8.0A-M3/5B.pdf
- Description:
- TVS DIODE 8VWM 13.6VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,018
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Product details
Overview
SMBG8.0A-M3/5B 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 8.0 V stand-off voltage (VWM), 8.89–9.83 V breakdown voltage (VBR) at 1 mA, 13.6 V clamping voltage (VC) at 44.1 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - used to safeguard MOSFETs, ICs, and sensor signal lines in automotive and industrial power supply rails.
For engineers reviewing the SMBG8.0A-M3/5B datasheet, SMBG8.0A-M3/5B pinout, SMBG8.0A-M3/5B application, or SMBG8.0A-M3/5B equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, halogen-free RoHS compliance (M3 suffix), 150 °C max junction temperature, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a clamping device that remains high-impedance below 8.0 V and rapidly transitions to low-impedance conduction above its 8.89–9.83 V breakdown threshold. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and fast response time (<1 ns), enabling effective suppression of ESD, lightning-induced surges, and inductive switching transients.
Thermal performance is defined by RθJA = 100 °C/W (on 0.2" × 0.2" pads) and RθJL = 20 °C/W, supporting reliable operation up to 150 °C junction temperature. The M3 suffix confirms halogen-free, RoHS-compliant construction qualified to AEC-Q101 for automotive-grade reliability.
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 - precise breakdown range defining turn-on consistency |
| VC @ IPPM | 13.6 V at 44.1 A - clamping voltage limiting downstream component stress during surge |
| PPPM | 600 W - peak pulse power handling capability under standardized 10/1000 µs waveform |
| ID @ VWM | <1.0 µA - ultra-low reverse leakage preserving signal integrity in standby |
| TJ max | +150 °C - extended thermal operating range suitable for under-hood automotive environments |
| Package | SMBG (DO-215AA) - surface-mount package with 0.235" × 0.255" footprint and gull-wing leads |
Pinout & Package
SMBG8.0A-M3/5B uses the SMBG (DO-215AA) package: low-profile, gull-wing leaded case with cathode band marking. Terminals are matte tin-plated, solderable per J-STD-002 and JESD 22-B102, and meet JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry (unidirectional) | Connected to protected line's lower-potential side; enables conduction when cathode voltage exceeds anode by ≥VBR |
| Cathode | Forward current exit / surge sink | Marked with band; tied to ground or common reference to shunt transients away from load |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics |
| Halogen-free & RoHS compliant (M3) | Meets environmental compliance requirements for industrial and automotive production |
| 600 W peak pulse power (10/1000 µs) | Withstands repetitive surge events without degradation when derated above 25 °C |
| Glass passivated junction | Ensures stable VBR, low leakage, and long-term reliability under thermal cycling |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp surges above 13.6 V. Use Value: Limits voltage seen by downstream DC-DC converters and microcontrollers to safe levels during ISO 7637-2 Pulse 5a events. | Use Scenario: Shielding analog output lines of pressure/temperature sensors in factory automation systems. IC Role / Device Role / Timing Role: TVS connected across signal and ground to absorb ESD and cable discharge events. Use Value: Prevents latch-up or damage to precision op-amps and ADC inputs while maintaining sub-1 µA leakage at 8 V bias. |
| Consumer Power Adapter Input Stage | Telecom Line Card Surge Suppression |
Use Scenario: Safeguarding AC-DC adapter primary-side rectifier and controller ICs against mains-borne surges. IC Role / Device Role / Timing Role: Mounted after bridge rectifier to clamp positive-going transients on DC bus. Use Value: Enables compact design with 600 W surge rating in SMBG footprint, eliminating need for larger DO-214AB devices. | Use Scenario: Protecting Ethernet PHY interface circuits from induced lightning surges on RJ45 ports. IC Role / Device Role / Timing Role: Paired with common-mode chokes to suppress differential-mode surges on data pairs. Use Value: Provides <13.6 V clamping at 44.1 A while maintaining low capacitance (<100 pF at 0 V), preserving signal integrity up to 100 Mbps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBG8.0A-E3/5B | Same electrical specs; RoHS-compliant but not halogen-free (E3 vs M3) | Lacks halogen-free certification required for some automotive Tier 1 programs | Select SMBG8.0A-M3/5B when halogen-free compliance is mandated by OEM specification |
| SMBJ8.0A-M3 | Same VWM/VC, but SMBJ package (DO-214AB); 600 W rating, higher RθJA (125 °C/W) | Larger footprint (4.58 mm × 3.94 mm vs SMBG's 6.48 mm × 5.97 mm); less suitable for dense layouts | Choose SMBG8.0A-M3/5B for space-constrained designs needing lowest profile and best thermal resistance (RθJA = 100 °C/W) |
Compared with SMBG8.0A-E3/5B and SMBJ8.0A-M3, SMBG8.0A-M3/5B uniquely combines halogen-free construction, AEC-Q101 qualification, and superior thermal performance in the smallest possible surface-mount TVS footprint for high-reliability 12 V system protection.
Availability
SMBG8.0A-M3/5B is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and consumer power adapter input stage designs requiring stable component supply and full AEC-Q101 traceability.
Supply support for SMBG8.0A-M3/5B 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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMBG series was developed to deliver high-power transient suppression in ultra-low-profile surface-mount packages for automotive and industrial applications where board space and thermal performance are critical constraints.
FAQ
What is the clamping voltage of SMBG8.0A-M3/5B and how is it measured?
The SMBG8.0A-M3/5B has a maximum clamping voltage (VC) of 13.6 V, measured at its peak pulse current (IPPM) of 44.1 A using the standardized 10/1000 µs double-exponential surge waveform. This value reflects the actual voltage imposed on protected circuitry during worst-case transient events, ensuring downstream components remain within safe operating limits. The SMBG8.0A-M3/5B achieves this with low incremental surge resistance and fast junction response.
Is SMBG8.0A-M3/5B suitable for automotive applications?
Yes, SMBG8.0A-M3/5B is AEC-Q101 qualified and constructed with halogen-free, RoHS-compliant materials (M3 suffix), making it suitable for automotive applications including engine control modules, body electronics, and infotainment power supplies. Its 150 °C maximum junction temperature, MSL Level 1 rating, and validated surge performance per ISO 7637-2 support deployment in harsh under-hood environments. The SMBG8.0A-M3/5B meets these requirements without derating.
How does the SMBG8.0A-M3/5B differ from the SMBG8.0CA bidirectional variant?
The SMBG8.0A-M3/5B is unidirectional and features a cathode band marking, intended for DC line protection where polarity is fixed. In contrast, SMBG8.0CA is bidirectional with no polarity marking and symmetric clamping in both directions - suited for AC or data-line applications. Electrical differences include higher IPPM (50 A vs 44.1 A) and identical VC (13.6 V) for SMBG8.0A-M3/5B, whereas SMBG8.0CA has same VBR range but dual-direction conduction.
What is the thermal resistance of SMBG8.0A-M3/5B and how does it affect layout?
The SMBG8.0A-M3/5B 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. This value assumes minimum recommended pad layout per Vishay's outline drawing. To maintain safe junction temperatures under repeated surges, PCB layout must provide adequate copper area and avoid thermal bottlenecks - undersized pads will raise RθJA and risk exceeding the SMBG8.0A-M3/5B's 150 °C TJ limit.
Does SMBG8.0A-M3/5B require derating at elevated ambient temperatures?
Yes, SMBG8.0A-M3/5B must be derated above 25 °C ambient per Figure 2 in the Vishay datasheet (Document Number: 88456). Its peak pulse power capability decreases linearly with increasing junction temperature, reaching ~50 % of rated 600 W at 100 °C ambient (assuming proper pad layout). Designers must calculate worst-case TJ using RθJA = 100 °C/W and apply derating curves to ensure the SMBG8.0A-M3/5B remains within safe operating area during repetitive surge events.
SMBG8.0A-M3/5B 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):
- 8V
- Voltage - Breakdown (Min):
- 8.89V
- Voltage - Clamping (Max) @ Ipp:
- 13.6V
- Current - Peak Pulse (10/1000µs):
- 44.1A
- 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)
SMBG8.0A-M3/5B FAQ
1.How can I place an order for SMBG8.0A-M3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG8.0A-M3/5B 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 SMBG8.0A-M3/5B reliable?
The price and inventory of SMBG8.0A-M3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG8.0A-M3/5B is usually 5 days.
3.What payment methods are accepted for SMBG8.0A-M3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG8.0A-M3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG8.0A-M3/5B?
SMBG8.0A-M3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG8.0A-M3/5B 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 SMBG8.0A-M3/5B?
For technical support, including SMBG8.0A-M3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG8.0A-M3/5B requirements.
6.How does Aetrix verify that SMBG8.0A-M3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG8.0A-M3/5B 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 SMBG8.0A-M3/5B meets industry standards.
7.What is the process for return or replacement of SMBG8.0A-M3/5B?
All SMBG8.0A-M3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG8.0A-M3/5B, 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 SMBG8.0A-M3/5B part is unused and in its original packaging.
Return procedure for SMBG8.0A-M3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG8.0A-M3/5B 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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