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Vishay General Semiconductor - Diodes Division SMBG11A-E3/52
- Part No.:
- SMBG11A-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG11A-E3/52.pdf
- Description:
- TVS DIODE 11VWM 18.2VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,739
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Product details
Overview
SMBG11A-E3/52 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 11 V stand-off voltage (VWM), 12.2–13.5 V breakdown voltage (VBR) at 1 mA, 18.2 V clamping voltage (VC) at 33 A peak pulse current, and 600 W peak pulse power rating with 10/1000 μs waveform - deployed to safeguard MOSFETs, ICs, and sensor interfaces against inductive switching transients in automotive and industrial control systems.
For engineers reviewing the SMBG11A-E3/52 datasheet, SMBG11A-E3/52 pinout, SMBG11A-E3/52 application, or SMBG11A-E3/52 equivalent, key selection criteria include verified unidirectional polarity, AEC-Q101 qualification, DO-215AA (SMBG) package compatibility, and clamping performance under repetitive surge conditions per IEC 61000-4-5.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VBR, it avalanches to divert surge current away from downstream circuitry. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<5.0 μA at VWM), while the low incremental surge resistance enables rapid energy absorption without thermal runaway.
Designed for surface-mount automated assembly, the device meets J-STD-020 MSL Level 1 (260 °C peak reflow), supports 100 A non-repetitive forward surge (8.3 ms half-sine), and maintains operation across –55 °C to +150 °C junction temperature range - enabling use in engine control units, power supply inputs, and CAN bus front-end protection where reliability under thermal stress is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 11 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR (min/max) | 12.2 V / 13.5 V at 1 mA - precise avalanche threshold ensuring predictable turn-on |
| VC @ IPPM | 18.2 V at 33 A - limits protected node voltage during 600 W transient events |
| 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 (unidirectional only) |
| Junction Temp | –55 °C to +150 °C - qualified for under-hood automotive and industrial ambient extremes |
| AEC-Q101 | Qualified - validated for automotive electronic systems per stress test requirements |
Pinout & Package
Package: SMBG (DO-215AA) - surface-mount, low-profile gull-wing leaded case with matte tin-plated terminals; meets UL 94 V-0 flammability rating and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Surge current sink terminal | Connected to protected line; conducts avalanche current to ground during overvoltage |
| Anode | Reference/return terminal | Typically tied to system ground or low-impedance return path for effective clamping |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Enables protection against high-energy transients (e.g., ISO 7637-2 Pulse 5a) without derating in compact layouts |
| Glass-passivated junction | Ensures long-term stability of VBR and low leakage drift over temperature and lifetime |
| AEC-Q101 qualification | Validates reliability for automotive applications including powertrain and body electronics |
| MSL Level 1 rating | Supports standard SMT reflow profiles up to 260 °C peak without moisture-induced failure |
| Low clamping ratio (VC/VBR ≈ 1.43) | Minimizes voltage overshoot during clamping, reducing stress on downstream CMOS ICs and gate drivers |
Applications
| Automotive Power Supply Input | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between power rail and ground to clamp surges above 13.5 V. Use Value: Limits rail voltage to ≤18.2 V during 33 A transients, preventing damage to LDOs and microcontrollers rated for 20 V absolute max. | Use Scenario: Safeguarding analog outputs of pressure/temperature sensors connected to PLC I/O modules. IC Role / Device Role / Timing Role: Low-capacitance TVS on signal line to suppress ESD and inductive kickback from solenoid actuation. Use Value: Clamps fast transients within nanoseconds while adding <1 pF capacitance at 0 V bias, preserving signal integrity up to 1 MHz. |
| DC Motor Drive Gate Protection | Telecom Power Interface |
Use Scenario: Shielding N-channel MOSFET gates from voltage spikes induced by flyback energy in H-bridge drivers. IC Role / Device Role / Timing Role: TVS connected between gate and source to clamp gate-source overvoltage during switching transitions. Use Value: Responds in <1 ps to limit VGS to safe levels below 20 V, avoiding gate oxide rupture in logic-level MOSFETs. | Use Scenario: Front-end surge suppression on 48 V telecom power feeds exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary shunt protector on DC input before DC/DC converter stage. Use Value: Handles repeated 600 W pulses per IEC 61000-4-5 Level 4 without degradation, maintaining VWM stability after 1000 surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ11A-E3/52 | Same VWM (11 V), but lower PPPM = 600 W (same rating), higher VC = 19.0 V at 33.5 A; SMB (DO-214AA) package, 1.6 mm taller | Suitable for less space-constrained boards; slightly higher clamping increases risk to 15 V-tolerant ICs | Select SMBJ11A-E3/52 if DO-214AA footprint is already used and 0.8 mm height margin exists. |
| 1.5SMC11A | Same electrical specs (VWM = 11 V, VC = 18.2 V), but larger SMC (DO-214AB) package; 1.5 kW rating derated to 600 W at TA = 25 °C | Better thermal dissipation in high-ambient environments (>85 °C); not AEC-Q101 qualified | Choose 1.5SMC11A for industrial power supplies requiring extended thermal headroom and no automotive qualification. |
Compared with SMBG11A-E3/52, SMBJ11A-E3/52 offers identical surge rating but less optimal clamping and taller profile, while 1.5SMC11A provides superior thermal margin at the cost of size and automotive compliance - making SMBG11A-E3/52 the preferred choice for space-limited, AEC-Q101–mandated automotive PCBs.
Availability
SMBG11A-E3/52 is available at Aetrix Electronics and suitable for automotive control units, industrial sensor interfaces, and telecom power input stages requiring stable component supply with full traceability and lifecycle management.
Supply support for SMBG11A-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, and protection devices with emphasis on reliability, precision, and automotive-grade qualification.
The SMBG series was developed specifically for high-reliability surface-mount transient suppression in space-constrained automotive and industrial applications, combining AEC-Q101 validation with optimized thermal and surge performance in the DO-215AA package.
FAQ
What is the clamping voltage of SMBG11A-E3/52 at its rated peak pulse current?
The SMBG11A-E3/52 has a maximum clamping voltage (VC) of 18.2 V at 33 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 transient events. The SMBG11A-E3/52 maintains this clamping performance across its qualified operating temperature range.
Is SMBG11A-E3/52 suitable for automotive applications?
Yes, SMBG11A-E3/52 is AEC-Q101 qualified and explicitly rated for automotive use, including engine control, body electronics, and infotainment power rails. Its construction - glass-passivated junction, MSL Level 1 reflow compatibility, and –55 °C to +150 °C operating range - meets stringent automotive reliability requirements. The SMBG11A-E3/52 data sheet confirms qualification per AEC-Q101 test conditions.
What does the "E3/52" suffix indicate in SMBG11A-E3/52?
The "E3" denotes RoHS-compliant, industrial-grade termination with matte tin plating; "52" specifies the packaging format: 750-piece quantity on 7-inch plastic tape and reel. This ordering code aligns with Vishay's standard industrial-grade configuration and is distinct from AEC-Q101–qualified variants (e.g., HE3 suffix). The SMBG11A-E3/52 is fully compatible with standard SMT pick-and-place equipment.
How does SMBG11A-E3/52 differ from bidirectional TVS diodes like SMBG11CA?
SMBG11A-E3/52 is unidirectional and features a cathode band for polarity identification, enabling use in DC circuits where reverse conduction must be blocked. In contrast, SMBG11CA is bidirectional with symmetrical clamping in both directions and no polarity marking. The SMBG11A-E3/52 exhibits forward voltage drop (~3.5 V at 50 A), while SMBG11CA does not conduct forward - making SMBG11A-E3/52 appropriate for single-polarity rail protection.
What is the thermal resistance of SMBG11A-E3/52, and how does it affect layout design?
The SMBG11A-E3/52 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. To maintain safe junction temperatures during repetitive surges, PCB layout must provide adequate copper area and avoid thermal bottlenecks. The SMBG11A-E3/52 datasheet specifies pad dimensions and recommends minimizing trace length to ground for optimal thermal and electrical performance.
SMBG11A-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):
- 11V
- Voltage - Breakdown (Min):
- 12.2V
- Voltage - Clamping (Max) @ Ipp:
- 18.2V
- Current - Peak Pulse (10/1000µs):
- 33A
- 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)
SMBG11A-E3/52 FAQ
1.How can I place an order for SMBG11A-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG11A-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 SMBG11A-E3/52 reliable?
The price and inventory of SMBG11A-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 SMBG11A-E3/52 is usually 5 days.
3.What payment methods are accepted for SMBG11A-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG11A-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG11A-E3/52?
SMBG11A-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG11A-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 SMBG11A-E3/52?
For technical support, including SMBG11A-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG11A-E3/52 requirements.
6.How does Aetrix verify that SMBG11A-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG11A-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 SMBG11A-E3/52 meets industry standards.
7.What is the process for return or replacement of SMBG11A-E3/52?
All SMBG11A-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG11A-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 SMBG11A-E3/52 part is unused and in its original packaging.
Return procedure for SMBG11A-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG11A-E3/52 Tags
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