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Vishay General Semiconductor - Diodes Division SMBG14AHE3/52
- Part No.:
- SMBG14AHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG14AHE3/52.pdf
- Description:
- TVS DIODE 14VWM 23.2VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,530
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Product details
Overview
SMBG14AHE3/52 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMBG (DO-215AA) package, rated for 14 V stand-off voltage (VWM), 15.6–17.2 V breakdown voltage (VBR) at 1 mA, 600 W peak pulse power (10/1000 µs), and 25.9 A peak pulse current (IPPM). It protects automotive sensor signal lines and MOSFET gate drivers against ESD and inductive switching transients.
For engineers reviewing the SMBG14AHE3/52 datasheet, SMBG14AHE3/52 pinout, SMBG14AHE3/52 application, or SMBG14AHE3/52 equivalent, key selection criteria include clamping voltage (23.2 V at IPPM), AEC-Q101 qualification, unidirectional polarity with cathode band marking, and RoHS-compliant HE3 suffix indicating automotive-grade reliability.
Technical Context
This TVS diode operates as a clamping device in parallel with sensitive circuit nodes, conducting only when reverse voltage exceeds VBR to limit transient overvoltage. Its glass-passivated junction ensures stable leakage (<1.0 µA at 14 V) and fast response time (<1 ns), critical for protecting low-voltage logic interfaces.
Designed for surface-mount automated placement, it features matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and meets MSL Level 1 (260 °C peak reflow). Thermal resistance is 100 °C/W (junction-to-ambient) on 5.0 mm × 5.0 mm copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 14 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 15.6 V / 17.2 V at 1 mA - Ensures reliable turn-on above system supply while avoiding false triggering |
| VC @ IPPM | 23.2 V - Clamped voltage during 25.9 A surge; defines maximum stress on protected IC |
| PPPM | 600 W - Peak power handling capability under standardized 10/1000 µs waveform |
| IPPM | 25.9 A - Surge current capacity directly tied to PCB pad thermal design (5.0 mm × 5.0 mm Cu) |
| TJ max | +150 °C - Enables operation in under-hood automotive environments |
| AEC-Q101 | Qualified - Validated for automotive electronics per stress test requirements |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, low-profile case with cathode band marking on unidirectional variants. Dimensions: 6.48 mm × 3.94 mm × 2.41 mm (L × W × H); mounting pad layout per Vishay spec sheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to ground or lower-potential node in unidirectional configuration |
| Cathode | Reverse-biased clamping terminal | Connected to protected line; marked by band; conducts during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Handles high-energy transients from inductive loads without degradation |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling and humidity testing |
| Glass passivated junction | Ensures stable VBR and low leakage across temperature and lifetime |
| MSL Level 1 rating | Supports standard SMT reflow profiles up to 260 °C peak without moisture-related failure |
| RoHS-compliant HE3 suffix | Indicates industrial + automotive qualification with halogen-free exemption |
Applications
| Automotive Sensor Protection | MOSFET Gate Driver Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, or position sensors in engine control units exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional clamping device placed between sensor output and microcontroller ADC input. Use Value: Limits transient voltage to ≤23.2 V, preventing latch-up or damage to 3.3 V/5 V ADC front-ends while maintaining <1.0 µA leakage at 14 V system rail. | Use Scenario: Safeguarding high-side N-channel MOSFET gate drive signals in DC-DC converters subject to cross-conduction spikes and Miller-induced ringing. IC Role / Device Role / Timing Role: Parallel-connected TVS on gate-to-source path to clamp negative-going transients below -0.7 V and positive surges above VGS(max). Use Value: Fast <1 ns response prevents gate oxide breakdown; 23.2 V clamping ensures gate voltage stays within ±20 V absolute maximum rating of common power MOSFETs. |
| Industrial PLC I/O Protection | Telecom Line Interface Protection |
Use Scenario: Shielding 24 V digital input channels in programmable logic controllers from field-wiring induced surges and relay contact bounce. IC Role / Device Role / Timing Role: Standoff-rated TVS on each input channel, referenced to common ground with series current-limiting resistor. Use Value: 14 V VWM allows full 24 V logic-high margin; 600 W rating withstands repetitive 1 kV/500 Ω surge tests per IEC 61000-4-5. | Use Scenario: Protecting RS-485 transceiver data lines in base station backhaul equipment subjected to lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Unidirectional TVS on driver output and receiver input pins, oriented to clamp negative transients toward ground. Use Value: Low 23.2 V clamping preserves signal integrity for 3.3 V transceivers; AEC-Q101 qualification supports extended temperature operation in outdoor enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ14A-E3/52 | Same VWM (14 V), but lower PPPM = 600 W (same), higher VC = 23.2 V (identical), different package (SMB vs. SMBG); slightly larger footprint | Compatible in board space-constrained designs where DO-214AA (SMB) is already used | Select if legacy SMB footprint is fixed and AEC-Q101 not required |
| SMCJ14AHE3/52 | Same VWM, same AEC-Q101, but SMC (DO-214AB) package: higher PPPM = 1500 W, higher IPPM = 64.4 A, larger size | Required for systems needing >600 W surge immunity (e.g., 10/1000 µs 4 kV tests) | Choose when higher energy handling is needed and board area permits larger SMC outline |
Compared with SMBJ14A-E3/52 and SMCJ14AHE3/52, SMBG14AHE3/52 delivers identical clamping performance in a smaller DO-215AA footprint and with automotive qualification-making it optimal for space-limited, AEC-Q101–mandated applications like ADAS sensor modules.
Availability
SMBG14AHE3/52 is available at Aetrix Electronics and suitable for automotive sensor protection, MOSFET gate driver safeguarding, and industrial PLC I/O conditioning requiring stable component supply across production lifecycles.
Supply support for SMBG14AHE3/52 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 and automotive qualification.
The SMBG TransZORB® series was engineered specifically for high-reliability transient suppression in automotive and industrial environments, balancing compact size, AEC-Q101 compliance, and robust 600 W surge handling.
FAQ
What is the clamping voltage of SMBG14AHE3/52 and how does it protect downstream circuits?
The SMBG14AHE3/52 has a maximum clamping voltage (VC) of 23.2 V at its rated peak pulse current of 25.9 A (10/1000 µs waveform). This means that during a transient event, the device limits the voltage seen by the protected circuit to no more than 23.2 V, preventing overvoltage damage to ICs such as microcontrollers, transceivers, or MOSFET gates. The SMBG14AHE3/52 achieves this through rapid avalanche breakdown, engaging within nanoseconds to shunt surge current away from sensitive nodes.
Is SMBG14AHE3/52 suitable for automotive applications, and what qualifications does it hold?
Yes, SMBG14AHE3/52 is explicitly qualified to AEC-Q101 for automotive use, verified across temperature cycling, humidity, mechanical shock, and accelerated life testing. Its HE3 suffix denotes RoHS compliance plus AEC-Q101 qualification, making it appropriate for engine control units, body electronics, and ADAS sensor interfaces. The SMBG14AHE3/52 operates reliably from –55 °C to +150 °C and meets MSL Level 1 for lead-free reflow compatibility.
How does the SMBG14AHE3/52 differ from bidirectional TVS diodes like SMBG14CA?
The SMBG14AHE3/52 is unidirectional and features a cathode band marking; it conducts only in reverse bias above VBR, making it ideal for DC-coupled lines referenced to ground. In contrast, SMBG14CA is bidirectional with symmetrical clamping in both polarities and no polarity marking-used in AC-coupled or floating signal paths. The SMBG14AHE3/52 offers tighter leakage control (<1.0 µA at 14 V) versus bidirectional variants, which typically specify higher ID due to dual-junction structure.
What is the thermal resistance of SMBG14AHE3/52, and how does it affect PCB layout?
The SMBG14AHE3/52 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 assumes optimal thermal land pattern per Vishay's DO-215AA outline. To maintain safe junction temperatures during repetitive surges, designers must provide adequate copper area and avoid excessive trace length between the SMBG14AHE3/52 and ground planes-especially critical in high-duty-cycle automotive applications.
Can SMBG14AHE3/52 be used in place of SMBJ14A, and what layout changes are needed?
SMBG14AHE3/52 is not a pin-compatible replacement for SMBJ14A due to differing packages: SMBG (DO-215AA) vs. SMB (DO-214AA). While both share identical electrical specs (VWM, VBR, VC, PPPM), the SMBG outline is narrower (3.94 mm vs. 4.57 mm width) and shorter (6.48 mm vs. 7.00 mm length). Using SMBG14AHE3/52 requires updated footprints and stencil apertures; however, its smaller size enables denser layouts and its AEC-Q101 rating adds automotive suitability lacking in standard SMBJ14A.
SMBG14AHE3/52 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):
- 14V
- Voltage - Breakdown (Min):
- 15.6V
- Voltage - Clamping (Max) @ Ipp:
- 23.2V
- Current - Peak Pulse (10/1000µs):
- 25.9A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBG)
SMBG14AHE3/52 FAQ
1.How can I place an order for SMBG14AHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG14AHE3/52 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 SMBG14AHE3/52 reliable?
The price and inventory of SMBG14AHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG14AHE3/52 is usually 5 days.
3.What payment methods are accepted for SMBG14AHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG14AHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG14AHE3/52?
SMBG14AHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG14AHE3/52 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 SMBG14AHE3/52?
For technical support, including SMBG14AHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG14AHE3/52 requirements.
6.How does Aetrix verify that SMBG14AHE3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG14AHE3/52 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 SMBG14AHE3/52 meets industry standards.
7.What is the process for return or replacement of SMBG14AHE3/52?
All SMBG14AHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG14AHE3/52, 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 SMBG14AHE3/52 part is unused and in its original packaging.
Return procedure for SMBG14AHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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