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Vishay General Semiconductor - Diodes Division SMBG7.0A-E3/5B
- Part No.:
- SMBG7.0A-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG7.0A-E3/5B.pdf
- Description:
- TVS DIODE 7VWM 12VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,088
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Product details
Overview
SMBG7.0A-E3/5B from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMBG (DO-215AA) package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 7.0 V stand-off voltage (VWM), 7.78–8.60 V breakdown voltage (VBR) at 10 mA, 12.0 V maximum clamping voltage (VC) at 50.0 A peak pulse current, and 600 W peak pulse power rating with 10/1000 μs waveform - used to safeguard MOSFETs, ICs, and sensor interfaces in automotive and industrial control systems.
For engineers reviewing the SMBG7.0A-E3/5B datasheet, SMBG7.0A-E3/5B pinout, SMBG7.0A-E3/5B application, or SMBG7.0A-E3/5B equivalent, key selection criteria include clamping performance under 50 A surge, unidirectional polarity marking, AEC-Q101 qualification status, RoHS-compliant matte tin plating, 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: when reverse voltage exceeds VBR, it avalanches into low-impedance conduction to clamp transients below VC. Its glass-passivated junction ensures stable breakdown and low leakage (<800 μA at VWM), while MSL Level 1 moisture sensitivity supports lead-free reflow up to 260 °C peak.
The device is rated for -55 °C to +150 °C operating junction temperature, with thermal resistance RθJA = 100 °C/W (on 0.2" × 0.2" pads) and RθJL = 20 °C/W. It handles non-repetitive 100 A forward surge (8.3 ms half-sine) and meets UL 497B recognition for telecom and industrial protectors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.0 V - Maximum continuous reverse working voltage before clamping initiates; defines safe operating margin for 5 V–7 V DC rails. |
| VBR @ IT = 10 mA | 7.78–8.60 V - Breakdown threshold range; ensures reliable turn-on during ESD or load-switching transients without premature conduction. |
| VC @ IPPM = 50.0 A | 12.0 V - Clamped voltage under 50 A 10/1000 μs surge; limits stress on downstream 12 V-tolerant ICs and gate drivers. |
| PPPM | 600 W - Peak pulse power handling; sustains high-energy transients (e.g., ISO 7637-2 Pulse 1/2a/5a) without failure. |
| IFSM | 100 A - Single half-sine surge rating (8.3 ms); supports protection against inductive kickback in relay or solenoid drive circuits. |
| Junction Temp Range | -55 °C to +150 °C - Enables deployment in under-hood automotive, motor drives, and industrial PLC environments. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability per stress test requirements including HTGB, HTRB, and TCT. |
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 identified by molded band; polarity critical for unidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction; connected to system ground or lower-potential rail. | Provides return path for surge current during clamping; must be routed with low-inductance connection to minimize VL overshoot. |
| Cathode | Current exit terminal during reverse-biased clamping; connected to protected line (e.g., 5 V supply or CAN_H). | Marked with band; determines directionality - incorrect orientation disables protection and risks short-circuit failure. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables single-device protection against high-energy transients per ISO 7637-2 and IEC 61000-4-5 without external series impedance. |
| AEC-Q101 qualified | Validates long-term reliability in automotive ECUs, ADAS sensors, and body control modules subject to thermal cycling and humidity exposure. |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free SMT assembly without baking or special handling; compatible with high-volume manufacturing. |
| Glass passivated junction | Ensures stable VBR tolerance and low leakage (<800 μA) across temperature and lifetime, critical for battery-powered systems. |
| UL 497B recognized (QVGQ2) | Meets safety agency requirements for telecom and industrial interface protection, reducing certification effort for end equipment. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 5 V–12 V microcontroller power inputs in engine control units exposed to load-dump and jump-start transients. IC Role / Device Role / Timing Role: Shunt clamping element placed between VCC and GND, responding within <1 ns to limit voltage excursions. Use Value: Clamps to ≤12.0 V at 50 A, preventing latch-up or permanent damage to 12 V-rated MCUs and PMICs during ISO 16750-2 Pulse 5a events. |
Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA transmitter outputs) in factory automation I/O modules. IC Role / Device Role / Timing Role: Unidirectional TVS connected in parallel with signal path, absorbing induced surges from nearby motor switching. Use Value: Limits transient voltage to ≤12.0 V while maintaining <800 μA leakage at 7.0 V, preserving signal accuracy and avoiding false triggering. |
| DC-DC Converter Input Protection | Automotive CAN Bus Node Protection |
|
Use Scenario: Front-end protection for buck converter inputs in ADAS camera modules powered from vehicle battery. IC Role / Device Role / Timing Role: Primary overvoltage clamp upstream of input capacitor, diverting energy before reaching controller IC. Use Value: Withstands 600 W pulses and 100 A surge, enabling robust operation during cold-crank and load-dump conditions without derating. |
Use Scenario: Secondary-level protection on CAN_H/CAN_L lines in gateway ECUs where common-mode transients exceed transceiver capability. IC Role / Device Role / Timing Role: Unidirectional TVS on each line referenced to ground, supplementing integrated transceiver ESD clamps. Use Value: Adds 600 W surge margin beyond ISO 11898-2 requirements, extending system immunity to severe EFT and surge events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.0A-E3/5B | Same VWM (7.0 V), but higher VC = 13.4 V at 43.5 A; lower PPPM = 600 W but different thermal design (SMB vs. SMBG case). | SMBJ has larger footprint (DO-214AA) and higher RθJA; less suitable for space-constrained automotive modules. | Select SMBG7.0A-E3/5B when board area is limited and AEC-Q101 compliance is mandatory; SMBJ7.0A-E3/5B may be used if layout allows larger pad area. |
| 1.5SMC7.0A | Same electrical specs (VWM = 7.0 V, VC = 12.0 V @ 50 A), but in larger SMC (DO-214AB) package with RθJA = 15 °C/W and no AEC-Q101 qualification. | Higher thermal mass supports higher repetitive surge duty but lacks automotive qualification and has lower MSL rating (Level 3). | Choose SMBG7.0A-E3/5B for automotive or high-reliability industrial use; 1.5SMC7.0A fits cost-sensitive consumer applications where qualification is not required. |
Compared with SMBJ7.0A-E3/5B and 1.5SMC7.0A, SMBG7.0A-E3/5B delivers identical clamping performance in a smaller, AEC-Q101-qualified package optimized for automated SMT and high-density layouts - making it the preferred choice for next-generation automotive and industrial edge nodes.
Availability
SMBG7.0A-E3/5B is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, DC-DC converter input safeguarding, and CAN bus node surge suppression requiring stable component supply and full traceability.
Supply support for SMBG7.0A-E3/5B 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 is engineered for high-power transient suppression in space-constrained, high-reliability environments - particularly targeting automotive, industrial, and telecom infrastructure where AEC-Q101 compliance and UL recognition are mandatory.
FAQ
What is the clamping voltage of SMBG7.0A-E3/5B at its rated peak pulse current?
The SMBG7.0A-E3/5B has a maximum clamping voltage (VC) of 12.0 V at 50.0 A peak pulse current (IPPM) with a 10/1000 μs waveform. This value is measured under standardized test conditions and defines the upper voltage limit imposed on protected circuitry during surge events. The SMBG7.0A-E3/5B maintains this clamping performance consistently across its operating temperature range and after repeated surges, provided thermal derating guidelines are followed.
Is SMBG7.0A-E3/5B suitable for automotive applications?
Yes, SMBG7.0A-E3/5B is AEC-Q101 qualified and explicitly rated for automotive use, including engine control units, body electronics, and ADAS sensor modules. Its construction - glass-passivated junction, matte tin plating, MSL Level 1 rating, and -55 °C to +150 °C junction temperature range - meets stringent automotive reliability requirements. The SMBG7.0A-E3/5B is listed in Vishay's AEC-Q101 qualified product portfolio and supports ISO 7637-2 and ISO 16750-2 compliance testing.
How does the SMBG7.0A-E3/5B differ from bidirectional variants like SMBG7.0CA?
The SMBG7.0A-E3/5B is unidirectional, with polarity marked by a cathode band and intended for DC line protection where reverse voltage is blocked. In contrast, SMBG7.0CA is bidirectional, offering symmetrical clamping in both directions and used in AC or differential signal paths like telecom lines. The SMBG7.0A-E3/5B has a forward voltage drop (~3.5 V at 50 A), while SMBG7.0CA does not conduct forward - a critical distinction affecting circuit topology and grounding strategy.
What is the recommended PCB pad layout for SMBG7.0A-E3/5B?
Vishay specifies a minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad for each terminal to achieve rated thermal and surge performance. These pads must be directly connected to internal or external ground/power planes via multiple vias to minimize thermal resistance and inductance. The SMBG7.0A-E3/5B datasheet confirms that derating curves (Fig. 2) and peak pulse ratings assume this layout; smaller pads reduce IPPM and PPPM capability significantly.
Does SMBG7.0A-E3/5B meet RoHS and halogen-free requirements?
Yes, the "E3" suffix in SMBG7.0A-E3/5B indicates RoHS-compliant, industrial-grade construction with matte tin plating. It meets JEDEC J-STD-020 MSL Level 1 and JESD 201 Class 2 whisker resistance. While not halogen-free (that requires "M3" suffix), the SMBG7.0A-E3/5B is fully compliant with EU RoHS Directive 2011/65/EU and satisfies material declarations per Vishay document 99912.
SMBG7.0A-E3/5B 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):
- 7V
- Voltage - Breakdown (Min):
- 7.78V
- Voltage - Clamping (Max) @ Ipp:
- 12V
- Current - Peak Pulse (10/1000µs):
- 50A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBG)
SMBG7.0A-E3/5B FAQ
1.How can I place an order for SMBG7.0A-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG7.0A-E3/5B 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 SMBG7.0A-E3/5B reliable?
The price and inventory of SMBG7.0A-E3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG7.0A-E3/5B is usually 5 days.
3.What payment methods are accepted for SMBG7.0A-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG7.0A-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG7.0A-E3/5B?
SMBG7.0A-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG7.0A-E3/5B 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 SMBG7.0A-E3/5B?
For technical support, including SMBG7.0A-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG7.0A-E3/5B requirements.
6.How does Aetrix verify that SMBG7.0A-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG7.0A-E3/5B 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 SMBG7.0A-E3/5B meets industry standards.
7.What is the process for return or replacement of SMBG7.0A-E3/5B?
All SMBG7.0A-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG7.0A-E3/5B, 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 SMBG7.0A-E3/5B part is unused and in its original packaging.
Return procedure for SMBG7.0A-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG7.0A-E3/5B Tags
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