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Vishay General Semiconductor - Diodes Division SMBJ14AHE3/5B
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- Part No.:
- SMBJ14AHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ14AHE3/5B.pdf
- Description:
- TVS DIODE 14VWM 23.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,369
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Product details
Overview
SMBJ14AHE3/5B from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features a 14 V stand-off voltage (VWM), 23.2 V maximum clamping voltage (VC) at 25.9 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial and automotive electronics.
For engineers reviewing the SMBJ14AHE3/5B datasheet, SMBJ14AHE3/5B pinout, SMBJ14AHE3/5B application, or SMBJ14AHE3/5B equivalent, key selection considerations include its AEC-Q101 qualification, 1.0 µA max reverse leakage at VWM, unidirectional polarity with cathode band marking, and compatibility with automated SMT placement on standard PCB pad layouts.
Technical Context
This TVS diode operates as a voltage-clamping protection device that enters avalanche breakdown when transient voltage exceeds its breakdown range of 15.6–17.2 V (tested at 1.0 mA). Its low incremental surge resistance and fast response time enable effective suppression of ESD, lightning-induced surges, and inductive switching spikes without affecting normal circuit operation.
The SMBJ14AHE3/5B is rated for 150 °C maximum junction temperature, exhibits 0.087 %/°C temperature coefficient of VBR, and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. Its matte tin-plated leads comply with J-STD-002 and JESD 22-B102 solderability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 14 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (Breakdown Voltage) | 15.6–17.2 V at 1.0 mA - Confirmed avalanche conduction threshold for reliable transient detection |
| VC (Clamping Voltage) | 23.2 V at 25.9 A (10/1000 µs) - Peak voltage seen by protected circuit during worst-case surge |
| PPPM (Peak Pulse Power) | 600 W - Sustained transient energy absorption capability under standardized surge waveform |
| IPPM (Peak Pulse Current) | 25.9 A - Maximum non-repetitive surge current the device safely conducts without failure |
| RθJA (Thermal Resistance) | 100 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads |
| TJ max. | 150 °C - Maximum allowable junction temperature for continuous operation and surge reliability |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile plastic case with matte tin-plated leads. Cathode indicated by a band on the body; anode is unmarked end. Meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts avalanche current to ground during overvoltage events |
| Anode (unbanded end) | Reference node | Typically tied to system ground or lower-potential rail to complete clamping path |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance |
| 600 W peak pulse power | Robust suppression of IEC 61000-4-5 Level 4 (4 kV) surges without degradation |
| Low clamping ratio (VC/VBR ≈ 1.4) | Minimizes overvoltage stress on downstream ICs while maintaining margin above VWM |
| MSL Level 1 moisture sensitivity | Enables standard reflow assembly without baking or special handling |
| Glass passivated junction | Ensures stable VBR and low leakage across temperature and lifetime |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp surges up to ±100 V. Use Value: Limits voltage seen by MCU and CAN transceivers to ≤23.2 V during 25.9 A transients, preventing latch-up or gate oxide damage. |
Use Scenario: Shielding analog output lines of pressure/temperature sensors from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS mounted at connector entry point to shunt fast transients before reaching ADC input. Use Value: Clamps 8 kV contact ESD (IEC 61000-4-2) within nanoseconds while adding <1 pF parasitic capacitance to signal path. |
| Telecom DC Power Input Protection | Consumer Device USB Port Protection |
|
Use Scenario: Safeguarding PoE-powered network switches against induced surges on 48 V DC input lines. IC Role / Device Role / Timing Role: Primary TVS on input stage, coordinated with upstream fuse and secondary filtering. Use Value: Absorbs 600 W surge energy without thermal runaway, enabling compliance with IEC 61000-4-5 Ed. 3 requirements. |
Use Scenario: Preventing damage to USB controller ICs during hot-plug insertion or nearby ESD events. IC Role / Device Role / Timing Role: Unidirectional suppressor on VBUS line, referenced to system ground. Use Value: Maintains 14 V stand-off to avoid interference with 5 V USB signaling while clamping >15 kV air discharge transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ14AHM3/5B | Halogen-free, RoHS-compliant variant with identical electrical specs and AEC-Q101 qualification | No functional difference; selected where halogen-free material compliance is mandated | Choose SMBJ14AHM3/5B when environmental compliance requires absence of brominated flame retardants |
| SMBJ14A-E3/5B | Commercial-grade (non-AEC-Q101) version with same VWM, VC, and PPPM; no automotive qualification | Suitable for non-automotive industrial or consumer use where extended reliability testing is not required | Select SMBJ14A-E3/5B for cost-sensitive designs outside automotive or high-reliability industrial environments |
Compared with SMBJ14AHE3/5B, SMBJ14AHM3/5B offers identical performance with halogen-free packaging, while SMBJ14A-E3/5B provides equivalent clamping and power ratings without AEC-Q101 validation - enabling trade-offs between regulatory compliance, environmental requirements, and qualification scope.
Availability
SMBJ14AHE3/5B is available at Aetrix Electronics and suitable for automotive control units, industrial sensor modules, and telecom power supplies requiring stable component supply with full AEC-Q101 traceability and long-term lifecycle support.
Supply support for SMBJ14AHE3/5B 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, efficiency, and application-specific optimization.
The SMBJ series is engineered for robust transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where voltage surges threaten IC integrity and system uptime.
FAQ
What is the breakdown voltage range of SMBJ14AHE3/5B?
The SMBJ14AHE3/5B has a guaranteed breakdown voltage (VBR) range of 15.6 V to 17.2 V at a test current of 1.0 mA, measured per ANSI/IEEE C62.35 standards. This range ensures consistent avalanche initiation across production lots and temperature extremes, directly supporting its role as a precise overvoltage clamp in the SMBJ14AHE3/5B design.
Is SMBJ14AHE3/5B suitable for automotive applications?
Yes, SMBJ14AHE3/5B is AEC-Q101 qualified and explicitly designated for automotive use with ordering code suffix HE3. It undergoes stress testing including temperature cycling, high-temperature reverse bias, and surge endurance - making SMBJ14AHE3/5B appropriate for engine control units, body electronics, and ADAS power domains.
What is the maximum clamping voltage for SMBJ14AHE3/5B under surge conditions?
The SMBJ14AHE3/5B clamps to a maximum of 23.2 V when subjected to a 10/1000 µs surge waveform with peak current of 25.9 A. This value is specified in the Vishay datasheet (Document Number 88392, Rev. 09-Jan-2024) and defines the upper voltage limit imposed on protected circuitry during transient events - a critical parameter in SMBJ14AHE3/5B system-level surge design.
Does SMBJ14AHE3/5B have polarity markings?
Yes, SMBJ14AHE3/5B is unidirectional and marked with a cathode band on the SMB (DO-214AA) package body. The banded end is the cathode terminal and must be connected toward the side of higher potential (e.g., power rail), while the unbanded end (anode) connects to ground - correct orientation is essential for SMBJ14AHE3/5B to function as intended.
What is the thermal resistance of SMBJ14AHE3/5B?
The SMBJ14AHE3/5B 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. This value governs steady-state power dissipation limits and influences derating curves for repetitive surge duty cycles - a key thermal specification for SMBJ14AHE3/5B layout and system thermal management.
SMBJ14AHE3/5B 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)
SMBJ14AHE3/5B FAQ
1.How can I place an order for SMBJ14AHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ14AHE3/5B 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 SMBJ14AHE3/5B reliable?
The price and inventory of SMBJ14AHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ14AHE3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ14AHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ14AHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ14AHE3/5B?
SMBJ14AHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ14AHE3/5B 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 SMBJ14AHE3/5B?
For technical support, including SMBJ14AHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ14AHE3/5B requirements.
6.How does Aetrix verify that SMBJ14AHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ14AHE3/5B 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 SMBJ14AHE3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ14AHE3/5B?
All SMBJ14AHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ14AHE3/5B, 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 SMBJ14AHE3/5B part is unused and in its original packaging.
Return procedure for SMBJ14AHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ14AHE3/5B Tags
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