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Vishay General Semiconductor - Diodes Division SMBG14-E3/52
- Part No.:
- SMBG14-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG14-E3/52.pdf
- Description:
- TVS DIODE 14VWM 25.8VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,371
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Product details
Overview
SMBG14-E3/52 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in the SMBG package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 14 V stand-off voltage (VWM), 15.6–17.2 V breakdown voltage (VBR) at 1 mA, 23.2 V maximum clamping voltage (VC) at 25.9 A peak pulse current, and 600 W peak pulse power rating with a 10/1000 µs waveform - deployed in automotive power supply inputs and industrial sensor interfaces.
For engineers reviewing the SMBG14-E3/52 datasheet, SMBG14-E3/52 pinout, SMBG14-E3/52 application, or SMBG14-E3/52 equivalent, key selection criteria include its unidirectional polarity, DO-215AA (SMBG) surface-mount package, AEC-Q101 qualification, 150 °C max junction temperature, and compliance with UL 497B for surge protector classification - all critical for automotive-grade ESD and load-dump protection design validation.
Technical Context
The SMBG14-E3/52 operates as a silicon avalanche diode with glass-passivated junction, delivering fast response time (<1 ns) and low incremental surge resistance to clamp transients before downstream ICs are damaged. Its unidirectional configuration enables integration into DC-biased circuits where reverse conduction must be blocked during normal operation.
Rated for 600 W peak pulse power under 10/1000 µs waveform and 100 A non-repetitive forward surge current (8.3 ms half-sine), it supports high-energy transient suppression while maintaining thermal stability via RθJA = 100 °C/W and RθJL = 20 °C/W - validated on 5.0 mm × 5.0 mm copper pads per terminal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 14 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC bias margin for protected line. |
| VBR (min/max) | 15.6 V / 17.2 V at 1 mA - Ensures reliable avalanche initiation across process variation; guarantees clamping activation above nominal rail. |
| VC @ IPPM | 23.2 V at 25.9 A - Clamped voltage seen by downstream circuit during worst-case 600 W transient; determines minimum IC withstand rating. |
| PPPM | 600 W - Peak transient energy absorption capability with 10/1000 µs waveform; sufficient for ISO 7637-2 Pulse 1 & 2b in automotive systems. |
| TJ max | +150 °C - Maximum junction temperature rating; enables operation in under-hood automotive environments without derating. |
| AEC-Q101 | Qualified - Validated for automotive reliability including temperature cycling, HTRB, and ESD; required for powertrain and body control modules. |
Pinout & Package
Package: DO-215AA (SMBG), surface-mount gull-wing leaded case with matte tin-plated terminals, UL 94 V-0 molding compound, and cathode band marking for polarity identification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / transient return path | Connected to ground or low-impedance return plane; completes clamping loop during positive transients. |
| Cathode | Protected line connection / transient sink | Connected to the line being protected (e.g., 12 V battery rail); conducts avalanche current when VAK exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables single-device protection against ISO 7637-2 Load Dump (Pulse 5a) up to 12 V systems without series impedance. |
| AEC-Q101 qualified | Validates reliability for automotive applications including engine control units, ADAS sensors, and infotainment power supplies. |
| Glass passivated junction | Ensures stable leakage current (<1 µA at VWM) and long-term parameter stability under thermal/humidity stress. |
| MSL Level 1 (260 °C peak reflow) | Supports standard lead-free SMT assembly without moisture sensitivity concerns or baking requirements. |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and jump-start transients in passenger vehicles. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between battery rail and input filter capacitor to clamp surges before LDO or DC/DC converter. Use Value: Limits clamped voltage to 23.2 V, ensuring downstream regulators with 28 V absolute max rating remain within safe operating area. |
Use Scenario: Shielding analog outputs of pressure/temperature sensors in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Low-capacitance TVS on 4–20 mA current loop output lines to suppress ESD and inductive switching noise. Use Value: Sub-1 ns response prevents latch-up in op-amps and ADC drivers during 8 kV contact ESD events per IEC 61000-4-2. |
| Telecom DC Power Feeds | Consumer Device USB Power Inputs |
Use Scenario: Safeguarding PoE-powered network switches against induced surges from nearby AC wiring or lightning coupling. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 48 V DC input stage upstream of DC/DC converters and Ethernet PHY power domains. Use Value: Withstands repetitive 600 W pulses at 0.01% duty cycle, enabling sustained operation in outdoor telecom cabinets. |
Use Scenario: Adding secondary surge protection to USB-C power delivery inputs in portable monitors and docking stations. IC Role / Device Role / Timing Role: Back-to-back TVS pair (with bi-directional variant) or unidirectional device on VBUS line to absorb hot-plug overshoot and ESD. Use Value: 14 V VWM allows compatibility with 5 V/9 V/15 V PD profiles while clamping below 24 V MOSFET gate oxide limits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ14A-E3/52 | Same VWM (14 V), identical DO-214AA (SMB) package but slightly higher VC (23.2 V vs. 23.2 V - matched), same 600 W rating; differs in thermal resistance (RθJA = 110 °C/W vs. 100 °C/W). | Lower thermal efficiency requires larger copper area or lower ambient for equivalent power handling; suitable where footprint compatibility with legacy SMB layout is mandatory. | Select SMBJ14A-E3/52 only if redesigning for existing SMB footprint; SMBG14-E3/52 offers superior thermal performance in constrained layouts. |
| SMAJ14A-E3/52 | Same VWM and VBR, but lower PPPM (400 W), smaller DO-214AC (SMA) package, and higher RθJA (140 °C/W); not AEC-Q101 qualified. | Limited to consumer or industrial non-automotive use; insufficient for ISO 7637-2 Pulse 5a testing without parallel devices. | Choose SMAJ14A-E3/52 only for cost-sensitive, space-constrained, non-automotive applications where 400 W peak power suffices. |
Compared with SMBJ14A-E3/52 and SMAJ14A-E3/52, the SMBG14-E3/52 delivers higher thermal efficiency (RθJA = 100 °C/W), AEC-Q101 qualification, and DO-215AA mechanical robustness - making it the preferred choice for automotive and high-reliability industrial power rail protection where sustained 600 W clamping is required.
Availability
SMBG14-E3/52 is available at Aetrix Electronics and suitable for automotive ECU power inputs, industrial sensor interface protection, and telecom DC feed applications requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMBG14-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 reliability, power efficiency, and automotive-grade qualification.
The SMBG series is engineered for high-energy transient suppression in harsh environments, targeting automotive power distribution, industrial control, and infrastructure equipment where AEC-Q101 compliance and 600 W pulse capability are mandatory.
FAQ
What is the maximum clamping voltage of SMBG14-E3/52 and how is it measured?
The SMBG14-E3/52 has a maximum clamping voltage (VC) of 23.2 V, measured at its rated peak pulse current (IPPM) of 25.9 A using a 10/1000 µs waveform. This value represents the highest voltage that appears across the SMBG14-E3/52 during a standardized surge event, directly determining the protection level afforded to downstream components. It is specified in the Vishay datasheet Document Number 88456, page 2.
Is SMBG14-E3/52 suitable for automotive applications?
Yes, SMBG14-E3/52 is AEC-Q101 qualified and explicitly rated for automotive use, including engine control units, body electronics, and ADAS sensor modules. Its 150 °C maximum junction temperature, robust DO-215AA package, and 600 W pulse rating meet ISO 7637-2 requirements for load dump and inductive switching transients. The SMBG14-E3/52 data sheet confirms this qualification in the Mechanical Data and Ordering Information sections.
What does the "-E3/52" suffix indicate in SMBG14-E3/52?
The "-E3" suffix denotes RoHS-compliant, commercial-grade construction with JESD 201 Class 1A whisker resistance, while "/52" specifies packaging in 7-inch plastic tape and reel with a base quantity of 750 units. This ordering code ensures consistent lead finish, moisture sensitivity level (MSL Level 1), and automated placement compatibility - all confirmed in the Vishay SMBG5.0A–SMBG188CA datasheet, page 3.
How does SMBG14-E3/52 differ from bi-directional TVS diodes like SMBG14CA?
The SMBG14-E3/52 is unidirectional and blocks reverse current beyond its VWM of 14 V, whereas SMBG14CA is bi-directional with symmetric clamping in both polarities. This makes SMBG14-E3/52 appropriate for DC-biased lines (e.g., 12 V battery feeds), while SMBG14CA suits AC-coupled or floating signal paths. The SMBG14-E3/52 datasheet clearly distinguishes uni- vs. bi-directional variants in the DEVICE TYPE column on page 2.
What is the thermal resistance of SMBG14-E3/52 and why does it matter?
The SMBG14-E3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 5.0 mm × 5.0 mm copper pads per terminal. This value directly impacts safe operating area during repetitive transients: lower RθJA allows higher average power dissipation without exceeding the 150 °C TJ limit. It is specified in the Thermal Characteristics table on page 3 of the Vishay datasheet 88456.
SMBG14-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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 14V
- Voltage - Breakdown (Min):
- 15.6V
- Voltage - Clamping (Max) @ Ipp:
- 25.8V
- Current - Peak Pulse (10/1000µs):
- 23.3A
- 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)
SMBG14-E3/52 FAQ
1.How can I place an order for SMBG14-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG14-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 SMBG14-E3/52 reliable?
The price and inventory of SMBG14-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 SMBG14-E3/52 is usually 5 days.
3.What payment methods are accepted for SMBG14-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG14-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG14-E3/52?
SMBG14-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG14-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 SMBG14-E3/52?
For technical support, including SMBG14-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG14-E3/52 requirements.
6.How does Aetrix verify that SMBG14-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG14-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 SMBG14-E3/52 meets industry standards.
7.What is the process for return or replacement of SMBG14-E3/52?
All SMBG14-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG14-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 SMBG14-E3/52 part is unused and in its original packaging.
Return procedure for SMBG14-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG14-E3/52 Tags
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