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Vishay General Semiconductor - Diodes Division SMBJ14AHE3/52
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- Part No.:
- SMBJ14AHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ14AHE3/52.pdf
- Description:
- TVS DIODE 14VWM 23.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,045
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Product details
Overview
SMBJ14AHE3/52 from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 14 V standoff voltage (VWM), 15.6–17.2 V breakdown voltage (VBR) at 1 mA, 23.2 V clamping voltage (VC) at 25.9 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - deployed in automotive power supply inputs and industrial sensor interfaces.
For engineers reviewing the SMBJ14AHE3/52 datasheet, SMBJ14AHE3/52 pinout, SMBJ14AHE3/52 application, or SMBJ14AHE3/52 equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance data, clamping performance under surge conditions, and real-world use context for ESD and load-switching transient suppression.
Technical Context
This TVS diode operates as a unidirectional clamping device, leveraging an avalanche breakdown mechanism to limit transient voltages above its VWM threshold while maintaining low leakage (<1.0 µA at 14 V). Its glass-passivated junction ensures stable breakdown characteristics and long-term reliability under repetitive surge stress.
Designed for surface-mount assembly on standard PCB copper pads (0.2" × 0.2"), it delivers 600 W peak pulse power handling with 0.01% duty cycle, 100 °C/W junction-to-ambient thermal resistance, and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak temperature tolerance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 14 V - Maximum continuous reverse operating voltage before clamping initiates; defines safe DC rail margin for 12 V systems. |
| VBR (min/max) | 15.6 V / 17.2 V at 1 mA - Confirmed breakdown range ensuring predictable turn-on during transients without premature conduction. |
| VC @ IPPM | 23.2 V at 25.9 A - Clamped voltage during 600 W 10/1000 µs surge; limits downstream IC stress to safe levels. |
| PPPM | 600 W - Peak pulse power rating with standardized waveform; enables protection against ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 surges. |
| IFSM | 100 A - Non-repetitive forward surge current rating (8.3 ms half-sine); supports high-energy fault events in power circuits. |
| TJ max | +150 °C - Maximum junction temperature; allows operation in under-hood automotive environments and industrial enclosures. |
| Package | SMB (DO-214AA) - Low-profile SMD outline with cathode band marking; compatible with automated pick-and-place and reflow soldering. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, matte tin-plated leads, polarity indicated by cathode band on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / low-side connection | Connected to ground or lower-potential node; completes clamping path during positive transients on cathode side. |
| Cathode | Reverse-biased terminal / protected line connection | Connected to the line being protected (e.g., 12 V rail); conducts avalanche current when voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics; supports PPAP documentation requirements. |
| 600 W peak pulse power | Withstands high-energy transients per ISO 7637-2 without degradation; eliminates need for external series impedance in many designs. |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage overshoot during clamping; protects 15 V-rated components on 12 V systems. |
| MSL Level 1 moisture sensitivity | Enables standard reflow without baking; reduces manufacturing complexity and cost in high-volume SMT lines. |
| Glass passivated junction | Ensures stable VBR over temperature and lifetime; prevents parameter drift under thermal cycling and humidity exposure. |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Protecting 12 V power input of automotive infotainment modules against load-dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between battery feed and DC-DC converter input. Use Value: Limits voltage to ≤23.2 V during 600 W surges, preventing damage to upstream regulators and enabling compliance with ISO 16750-2. |
Use Scenario: Shielding analog output lines of pressure sensors in factory automation PLCs from ESD and inductive switching noise. IC Role / Device Role / Timing Role: Low-capacitance TVS connected between signal line and ground, with cathode tied to signal. Use Value: Sub-1 µA leakage at 14 V avoids loading sensitive mV-level outputs; fast response preserves signal integrity. |
| Telecom DC Power Rail Protection | Consumer USB Port VBUS Protection |
|
Use Scenario: Safeguarding 48 V DC input of PoE-powered network switches against lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary clamping element on secondary-side DC bus after isolation transformer and rectifier. Use Value: 150 °C max junction temperature supports operation in sealed telecom enclosures; 100 °C/W RθJA enables thermal design without heatsinks. |
Use Scenario: Adding secondary-level surge immunity to USB Type-A VBUS lines in smart home hubs exposed to user-handled cables. IC Role / Device Role / Timing Role: Unidirectional TVS mounted directly at USB connector, cathode to VBUS, anode to ground. Use Value: 23.2 V clamping voltage stays below USB 2.0 VBUS absolute maximum (30 V), preserving port functionality after multiple ESD events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ14AHM3/52 | Halogen-free, RoHS-compliant variant with identical electrical specs and AEC-Q101 qualification. | No functional difference; selected where halogen-free materials are mandated by OEM environmental policy. | Direct material substitution when halogen-free compliance is required; same footprint and thermal behavior. |
| SMBJ14A-E3/52 | Commercial-grade (non-AEC-Q101) version; same VWM, VBR, VC, PPPM, but not qualified for automotive use. | Suitable for consumer or industrial applications without automotive qualification mandates. | Cost-optimized alternative for non-automotive designs; verify qualification requirements before substitution. |
Compared with SMBJ14AHE3/52, the HM3 variant adds halogen-free compliance without altering performance, while the E3 variant omits AEC-Q101 qualification - making HE3 the only choice for automotive production, HM3 for eco-sensitive automotive, and E3 for cost-driven commercial use.
Availability
SMBJ14AHE3/52 is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, telecom power supplies, and consumer USB power delivery systems requiring stable component supply and AEC-Q101 assurance.
Supply support for SMBJ14AHE3/52 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and automotive-grade validation.
The SMBJ series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure applications demanding AEC-Q101 compliance and repeatable clamping performance.
FAQ
What is the clamping voltage of SMBJ14AHE3/52 and how is it measured?
The SMBJ14AHE3/52 has a maximum clamping voltage (VC) of 23.2 V at 25.9 A peak pulse current, tested with a standardized 10/1000 µs double-exponential waveform. This value is measured across the device terminals during surge conduction and represents the upper voltage limit imposed on protected circuitry - critical for ensuring downstream ICs remain within their absolute maximum ratings. The SMBJ14AHE3/52 achieves this clamping with minimal overshoot due to its low incremental surge resistance.
Is SMBJ14AHE3/52 suitable for automotive applications?
Yes, SMBJ14AHE3/52 is AEC-Q101 qualified and explicitly designated for automotive use, with ordering code suffix "HE3" indicating RoHS-compliant and AEC-Q101-qualified construction. It operates reliably from −55 °C to +150 °C, withstands 100 A non-repetitive forward surge current, and meets MSL Level 1 for lead-free reflow - making it appropriate for engine control units, body controllers, and ADAS power domains. The SMBJ14AHE3/52 is validated for these conditions per Vishay's qualification report.
What is the standoff voltage (VWM) of SMBJ14AHE3/52 and why does it matter?
The standoff voltage (VWM) of SMBJ14AHE3/52 is 14 V - the maximum DC or continuous reverse voltage the device can block without entering avalanche conduction. This parameter ensures the SMBJ14AHE3/52 remains non-conductive during normal operation of a 12 V automotive system, avoiding power loss or false triggering. Selecting VWM ≥ 1.1× nominal rail voltage prevents leakage-related heating and guarantees reliable transient response only when needed.
How does SMBJ14AHE3/52 differ from bidirectional variants like SMBJ14CA?
SMBJ14AHE3/52 is unidirectional, with polarity marked by a cathode band and intended for DC line protection where current flows in one direction - such as 12 V power rails. In contrast, SMBJ14CA is bidirectional, symmetric in both directions, and used for AC signal lines or differential buses. The SMBJ14AHE3/52 has no reverse conduction capability; applying reverse voltage beyond VWM will not clamp unless polarity is reversed. This makes SMBJ14AHE3/52 unsuitable for AC-coupled or floating signal paths.
What package type does SMBJ14AHE3/52 use and what are its mounting requirements?
SMBJ14AHE3/52 uses the SMB (DO-214AA) surface-mount package - measuring 4.57 mm × 3.94 mm × 2.20 mm - with matte tin-plated leads compliant with J-STD-002 and JESD 22-B102. It requires standard SMT reflow per J-STD-020 MSL Level 1 (peak 260 °C), mounted on minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve rated 600 W pulse power. The SMBJ14AHE3/52 cathode band must be oriented toward the protected line during placement.
SMBJ14AHE3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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 (SMBJ)
SMBJ14AHE3/52 FAQ
1.How can I place an order for SMBJ14AHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ14AHE3/52 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 SMBJ14AHE3/52 reliable?
The price and inventory of SMBJ14AHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ14AHE3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ14AHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ14AHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ14AHE3/52?
SMBJ14AHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ14AHE3/52 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 SMBJ14AHE3/52?
For technical support, including SMBJ14AHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ14AHE3/52 requirements.
6.How does Aetrix verify that SMBJ14AHE3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ14AHE3/52 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 SMBJ14AHE3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ14AHE3/52?
All SMBJ14AHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ14AHE3/52, 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 SMBJ14AHE3/52 part is unused and in its original packaging.
Return procedure for SMBJ14AHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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