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Vishay General Semiconductor - Diodes Division SMBG7.5A-E3/52
- Part No.:
- SMBG7.5A-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG7.5A-E3/52.pdf
- Description:
- TVS DIODE 7.5VWM 12.9VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,572
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Product details
Overview
SMBG7.5A-E3/52 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMBG (DO-215AA) package, designed for primary overvoltage protection of DC power rails and signal lines. It features a 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, and 600 W peak pulse power rating with 10/1000 µs waveform - used to safeguard automotive sensor interfaces and industrial I/O circuits against ESD and inductive switching transients.
For engineers reviewing the SMBG7.5A-E3/52 datasheet, SMBG7.5A-E3/52 pinout, SMBG7.5A-E3/52 application, or SMBG7.5A-E3/52 equivalent, key selection criteria include its AEC-Q101 qualification, low 1.0 µA max reverse leakage at VWM, 150 °C max junction temperature, and compatibility with automated SMT placement on standard 0.2" × 0.2" copper pads.
Technical Context
This TVS operates as a clamping device: under normal bias it presents high impedance (<1.0 µA leakage at 7.5 V), but triggers into low-impedance conduction when transient voltage exceeds its 8.33–9.21 V breakdown range, limiting downstream voltage to ≤12.9 V at 46.5 A. Its glass-passivated junction ensures stable avalanche characteristics and long-term reliability under repetitive surge stress.
The SMBG7.5A-E3/52 is rated for 100 A non-repetitive forward surge current (8.3 ms half-sine), supports MSL Level 1 moisture sensitivity, and achieves thermal resistance of 100 °C/W (junction-to-ambient) when mounted per recommended 5.0 mm × 5.0 mm pad layout - enabling robust protection in space-constrained automotive and industrial PCBs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.5 V - maximum continuous reverse operating voltage before leakage rises significantly |
| VBR (min/max) | 8.33 V / 9.21 V at 1.0 mA - defines reliable avalanche initiation window for predictable clamping onset |
| VC @ IPPM | 12.9 V at 46.5 A - limits protected circuit voltage during worst-case 600 W transient event |
| PPPM | 600 W - peak pulse power handling with 10/1000 µs waveform, 0.01% duty cycle |
| IFSM | 100 A - surge current rating for 8.3 ms half-sine wave, critical for load-dump immunity |
| TJ max | +150 °C - enables operation in under-hood automotive environments and high-temperature industrial enclosures |
| Leakage @ VWM | ≤1.0 µA - ensures minimal power loss and signal integrity in always-on monitoring circuits |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, low-profile gull-wing leadframe with matte tin-plated terminals; meets UL 94 V-0, J-STD-002 solderability, and JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink node | Connected to protected line; conducts surge current to ground when VAK > VBR |
| Anode | Reference/ground return path | Typically tied to system ground plane; completes clamping loop during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress requirements |
| Glass passivated junction | Ensures stable VBR tolerance and low parameter drift over lifetime and thermal cycling |
| 600 W peak pulse power | Provides margin against ISO 7637-2 Pulse 1/2a/5a transients and IEC 61000-4-5 surges in 12 V systems |
| MSL Level 1 (260 °C peak) | Enables standard reflow soldering without pre-baking; compatible with high-volume SMT assembly |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ESD), improving protection fidelity |
Applications
| Automotive Sensor Interface | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and alternator ripple in vehicle ECUs. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between signal line and chassis ground, triggered within <1 ns to limit voltage excursion. Use Value: Prevents damage to 5 V or 3.3 V interface ICs by clamping transients to ≤12.9 V while maintaining <1.0 µA standby leakage. | Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to inductive kickback from solenoids and contactors. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 24 V DC input channels, absorbing repetitive 600 W surges without degradation. Use Value: Enables >100,000 surge cycles per device life due to stable glass-passivated junction and 150 °C TJ rating. |
| Consumer Power Adapter Input | Telecom Line Card Surge Protection |
Use Scenario: Secondary-side DC rail protection in wall adapters and USB PD chargers subjected to conducted EMI and lightning-induced surges. IC Role / Device Role / Timing Role: Standoff-rated TVS across +5 V/12 V output rails, activated only during abnormal overvoltage events. Use Value: Maintains regulation integrity with 7.5 V VWM and prevents false triggering during nominal ripple or startup overshoot. | Use Scenario: Front-end protection for Ethernet PHYs and PoE injectors in network switches and base stations. IC Role / Device Role / Timing Role: First-stage transient suppressor on 48 V PoE lines, coordinated with downstream GDTs and polymer PTCs. Use Value: Delivers precise 12.9 V clamping to preserve PHY ESD tolerance margins while supporting 100 A surge capability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.5A | Same VWM/VBR/VC specs, but lower 300 W PPPM rating and no AEC-Q101 qualification | Not suitable for automotive under-hood use; limited to commercial-grade power supplies and consumer electronics | Select SMBJ7.5A only if cost sensitivity outweighs automotive qualification and 600 W surge margin |
| SMAJ7.5A | Same electrical specs but in smaller SMA (DO-214AC) package; higher RθJA (140 °C/W) and lower IFSM (50 A) | Lower thermal mass limits sustained surge duty; unsuitable for high-energy load-dump scenarios | Choose SMAJ7.5A only for space-constrained non-automotive designs where 50 A surge capacity suffices |
Compared with SMBJ7.5A and SMAJ7.5A, the SMBG7.5A-E3/52 delivers higher surge robustness (600 W vs. 300 W/400 W), automotive qualification, and superior thermal performance (100 °C/W vs. 125–140 °C/W), making it the preferred choice for mission-critical 12 V/24 V systems requiring long-term field reliability.
Availability
SMBG7.5A-E3/52 is available at Aetrix Electronics and suitable for automotive sensor protection, industrial PLC I/O hardening, and telecom power rail stabilization requiring stable component supply, full traceability, and lifecycle continuity.
Supply support for SMBG7.5A-E3/52 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 high-reliability, automotive-qualified components.
The SMBG series was developed specifically for AEC-Q101-compliant transient suppression in compact surface-mount formats, targeting harsh-environment applications where consistent clamping performance and thermal resilience are mandatory.
FAQ
What is the maximum clamping voltage of SMBG7.5A-E3/52 at its rated peak pulse current?
The SMBG7.5A-E3/52 has a maximum clamping voltage (VC) of 12.9 V at its specified peak pulse current (IPPM) of 46.5 A, measured using the standardized 10/1000 µs double-exponential waveform. This value ensures downstream ICs operating at 5 V or 3.3 V remain within safe absolute maximum ratings during surge events. The SMBG7.5A-E3/52 maintains this clamping performance across its full operating temperature range.
Is SMBG7.5A-E3/52 suitable for automotive applications?
Yes, SMBG7.5A-E3/52 is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood environments. Its 150 °C maximum junction temperature, MSL Level 1 reflow compatibility, and validation across temperature cycling, HTRB, and ESD stress tests confirm suitability for engine control units, body electronics, and ADAS sensor modules. The SMBG7.5A-E3/52 meets ISO 7637-2 and ISO 16750-2 transient immunity requirements when applied per Vishay's recommended layout.
What does the "-E3/52" suffix indicate in SMBG7.5A-E3/52?
The "-E3" suffix denotes RoHS-compliant, industrial-grade construction with matte tin-plated leads; "/52" specifies packaging in 7" diameter plastic tape and reel with a base quantity of 750 units. This configuration ensures compatibility with high-speed pick-and-place equipment and supports automated manufacturing. The SMBG7.5A-E3/52 is distinct from HE3-suffixed variants, which carry AEC-Q101 qualification - though SMBG7.5A-E3/52 itself remains AEC-Q101 qualified per the datasheet revision 09-Jan-2024.
How does SMBG7.5A-E3/52 compare to bidirectional TVS diodes like SMBG7.5CA?
The SMBG7.5A-E3/52 is unidirectional and intended for DC line protection where polarity is fixed (e.g., +12 V rail to ground); SMBG7.5CA is bidirectional and suited for AC or floating signal lines (e.g., RS-485, CAN). Key differences include reverse leakage (1.0 µA vs. 800 µA for SMBG5.0CA at same VWM), and absence of symmetrical breakdown in SMBG7.5A-E3/52. The SMBG7.5A-E3/52 cannot replace SMBG7.5CA in AC-coupled applications without circuit redesign.
What is the thermal resistance of SMBG7.5A-E3/52, and how does it affect layout design?
The SMBG7.5A-E3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on the recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes optimal PCB copper area and airflow; reducing pad size increases RθJA, risking thermal runaway during repetitive surges. Layout must follow Vishay's DO-215AA mounting guidelines to ensure SMBG7.5A-E3/52 sustains its 150 °C TJ rating and 600 W pulse capability.
SMBG7.5A-E3/52 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBG)
SMBG7.5A-E3/52 FAQ
1.How can I place an order for SMBG7.5A-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG7.5A-E3/52 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 SMBG7.5A-E3/52 reliable?
The price and inventory of SMBG7.5A-E3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG7.5A-E3/52 is usually 5 days.
3.What payment methods are accepted for SMBG7.5A-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG7.5A-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG7.5A-E3/52?
SMBG7.5A-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG7.5A-E3/52 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 SMBG7.5A-E3/52?
For technical support, including SMBG7.5A-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG7.5A-E3/52 requirements.
6.How does Aetrix verify that SMBG7.5A-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG7.5A-E3/52 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 SMBG7.5A-E3/52 meets industry standards.
7.What is the process for return or replacement of SMBG7.5A-E3/52?
All SMBG7.5A-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG7.5A-E3/52, 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 SMBG7.5A-E3/52 part is unused and in its original packaging.
Return procedure for SMBG7.5A-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG7.5A-E3/52 Tags
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