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Vishay General Semiconductor - Diodes Division SMBG7.5-E3/5B
- Part No.:
- SMBG7.5-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG7.5-E3/5B.pdf
- Description:
- TVS DIODE 7.5VWM 14.3VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,864
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Product details
Overview
SMBG7.5-E3/5B from Vishay General Semiconductor is a unidirectional surface-mount TransZORB® transient voltage suppressor in DO-215AA (SMBG) package, designed for clamping inductive switching surges 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 maximum clamping voltage (VC) at 46.5 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform.
For engineers reviewing the SMBG7.5-E3/5B datasheet, SMBG7.5-E3/5B pinout, SMBG7.5-E3/5B application, or SMBG7.5-E3/5B equivalent, key selection criteria include clamping performance under 46.5 A surge, thermal resistance (RθJA = 100 °C/W), AEC-Q101 qualification status, RoHS compliance, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a unidirectional avalanche diode, leveraging glass-passivated silicon junction technology to achieve sub-nanosecond response time and low incremental surge resistance. Its clamping behavior is defined by VC = 12.9 V at IPPM = 46.5 A (10/1000 µs), with VWM = 7.5 V ensuring reliable blocking during normal operation and VBR = 8.33–9.21 V confirming tight parametric distribution at 1.0 mA test current.
Thermal design is constrained by RθJA = 100 °C/W (typ.) and RθJL = 20 °C/W (typ.), requiring adherence to the specified 0.2" × 0.2" copper pad layout per terminal for rated power dissipation. The device is rated for TJ = –55 °C to +150 °C and qualified to AEC-Q101 for automotive-grade reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.5 V - Maximum reverse working voltage before leakage exceeds 100 µA; defines safe operating margin below breakdown. |
| VBR @ IT = 1.0 mA | 8.33–9.21 V - Confirmed avalanche onset range; ensures consistent turn-on across production lots. |
| VC @ IPPM = 46.5 A | 12.9 V - Clamped voltage during 600 W transient; determines protected circuit's maximum overvoltage exposure. |
| PPPM | 600 W - Peak pulse power handling with 10/1000 µs waveform; validates robustness against common lightning/inductive spikes. |
| IFSM | 100 A - Non-repetitive forward surge rating (8.3 ms half-sine); supports high-energy fault clearing in power supply inputs. |
| TJ max. | +150 °C - Maximum junction temperature; enables use in under-hood automotive or high-ambient industrial environments. |
| Package | DO-215AA (SMBG) - Standardized surface-mount outline with gull-wing leads; compatible with IPC-7351B footprint and J-STD-002 solderability. |
Pinout & Package
DO-215AA (SMBG) package: molded plastic case with gull-wing terminals; cathode indicated by band on one end; matte tin-plated leads compliant with J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias | Connected to lower-potential side of protected line (e.g., GND or return path) in unidirectional configuration. |
| Cathode (banded end) | Current exit point in forward bias; clamping node in reverse bias | Connected to higher-potential side (e.g., VIN, signal line) - reverse-biased during transients to clamp to VC. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables protection against IEC 61000-4-5 Level 4 surges (4 kV line-earth) without derating in standard PCB layouts. |
| AEC-Q101 qualified | Validated for automotive powertrain and body electronics applications requiring zero-failure reliability over temperature and lifetime. |
| Glass passivated junction | Ensures stable VBR and low leakage (<100 µA at VWM) across humidity, temperature, and long-term bias stress. |
| MSL Level 1 (260 °C peak reflow) | Supports single-pass lead-free reflow assembly without popcorn cracking or parameter shift. |
| RoHS-compliant (E3 suffix) | Meets EU Directive 2011/65/EU; no lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE in homogeneous materials. |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Clamp |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBAT and GND to clamp surges up to ±120 V. Use Value: Limits voltage seen by downstream LDOs and MCUs to ≤12.9 V during 46.5 A transients, preventing latch-up or oxide damage. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance unidirectional clamp on signal line referenced to local ground. Use Value: Maintains signal integrity with <100 µA leakage at 7.5 V while suppressing ±8 kV contact ESD per IEC 61000-4-2. |
| Consumer USB Port Surge Suppression | Telecom DC Power Feed Protection |
|
Use Scenario: Safeguarding USB VBUS lines in portable chargers and docking stations against hot-plug and inductive kickback. IC Role / Device Role / Timing Role: Standoff-rated TVS in series with VBUS to absorb 600 W pulses without crowbar action. Use Value: Prevents overvoltage damage to USB controller ICs while maintaining 7.5 V nominal operation and fast 12.9 V clamping. |
Use Scenario: Protecting PoE-powered equipment front-end from induced surges on 48 V DC feed lines. IC Role / Device Role / Timing Role: Primary clamping device on DC input rail prior to DC-DC converter stage. Use Value: Handles repetitive 600 W transients with 0.01% duty cycle, enabling robust field deployment in outdoor telecom cabinets. |
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 VWM (7.5 V), identical DO-214AA (SMB) package but different thermal resistance (RθJA = 85 °C/W vs. 100 °C/W) and slightly higher VC (13.4 V @ 43.5 A). | Higher power density and tighter clamping tolerance; preferred where board space allows optimized heatsinking. | Select SMBJ7.5A-E3/5B when lower RθJA and marginally better clamping are required, accepting minor footprint variation. |
| SMAJ7.5A-E3/5B | Same VWM and VBR, but lower PPPM (400 W), smaller DO-214AC (SMA) package, and higher VC (14.4 V @ 27.8 A). | Reduced surge handling capacity; suitable only for non-automotive, low-risk consumer interfaces. | Choose SMAJ7.5A-E3/5B for cost-sensitive, space-constrained designs where 400 W surge immunity suffices. |
Compared with SMBG7.5-E3/5B, SMBJ7.5A-E3/5B offers superior thermal performance and tighter clamping but requires verification of pad layout compatibility, while SMAJ7.5A-E3/5B trades robustness for size and cost-making SMBG7.5-E3/5B the balanced choice for AEC-Q101–required automotive and industrial applications.
Availability
SMBG7.5-E3/5B is available at Aetrix Electronics and suitable for automotive power input protection, industrial sensor interface hardening, and telecom DC feed surge suppression requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMBG7.5-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, precision, and automotive-grade qualification.
The SMBG series is engineered specifically for high-energy transient suppression in harsh environments, targeting AEC-Q101–compliant automotive subsystems and industrial control systems demanding 600 W surge capability and MSL Level 1 reflow compatibility.
FAQ
What is the clamping voltage of SMBG7.5-E3/5B at its rated peak pulse current?
The SMBG7.5-E3/5B has a maximum clamping voltage (VC) of 12.9 V when subjected to its rated peak pulse current of 46.5 A using the standardized 10/1000 µs waveform. This value is measured under conditions specified in the Vishay datasheet (Document Number: 88456), with the device mounted on 0.2" × 0.2" copper pads per terminal. This clamping level ensures downstream components see limited overvoltage during surge events.
Is SMBG7.5-E3/5B qualified for automotive applications?
Yes, SMBG7.5-E3/5B is AEC-Q101 qualified, as confirmed in the Vishay datasheet revision 12-Nov-12 (Document Number: 88456). The "E3" suffix denotes RoHS-compliant commercial grade, while AEC-Q101 qualification applies to the base SMBG7.5A device family. For automotive production use, Vishay recommends verifying qualification status via the specific part number SMBG7.5AHE3/5B - however, SMBG7.5-E3/5B shares identical electrical and thermal characteristics and is widely deployed in automotive subsystems where AEC-Q101 compliance is documented for the family.
What is the standoff voltage and breakdown voltage range for SMBG7.5-E3/5B?
The SMBG7.5-E3/5B has a reverse stand-off voltage (VWM) of 7.5 V and a breakdown voltage (VBR) range of 8.33 V to 9.21 V at a test current (IT) of 1.0 mA. These values are explicitly listed in the Electrical Characteristics table on page 2 of the Vishay datasheet (88456), confirming the device's ability to block 7.5 V continuously while reliably avalanching within this narrow VBR window during overvoltage events.
Does SMBG7.5-E3/5B have polarity marking, and how is it identified?
Yes, SMBG7.5-E3/5B is a unidirectional TVS diode and features a cathode band marking on the package body - consistent with DO-215AA (SMBG) mechanical drawings in the Vishay datasheet. The banded end corresponds to the cathode terminal, which must be connected toward the higher-potential side of the protected line. No marking is used for bi-directional variants, but SMBG7.5-E3/5B is unidirectional and always marked per specification.
What is the thermal resistance and maximum junction temperature for SMBG7.5-E3/5B?
The SMBG7.5-E3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W and a maximum junction temperature (TJ) rating of +150 °C, as stated in the Thermal Characteristics section of the Vishay datasheet (page 3, Document Number: 88456). These parameters assume mounting on the recommended 0.2" × 0.2" copper pad per terminal; exceeding this layout degrades thermal performance and reduces surge endurance.
SMBG7.5-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:
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBG)
SMBG7.5-E3/5B FAQ
1.How can I place an order for SMBG7.5-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG7.5-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 SMBG7.5-E3/5B reliable?
The price and inventory of SMBG7.5-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 SMBG7.5-E3/5B is usually 5 days.
3.What payment methods are accepted for SMBG7.5-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG7.5-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG7.5-E3/5B?
SMBG7.5-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG7.5-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 SMBG7.5-E3/5B?
For technical support, including SMBG7.5-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG7.5-E3/5B requirements.
6.How does Aetrix verify that SMBG7.5-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG7.5-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 SMBG7.5-E3/5B meets industry standards.
7.What is the process for return or replacement of SMBG7.5-E3/5B?
All SMBG7.5-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG7.5-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 SMBG7.5-E3/5B part is unused and in its original packaging.
Return procedure for SMBG7.5-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG7.5-E3/5B Tags
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