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Vishay General Semiconductor - Diodes Division SMBJ14AHE3_A/I
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- Part No.:
- SMBJ14AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ14AHE3_A/I.pdf
- Description:
- TVS DIODE 14VWM 23.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,754
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Product details
Overview
SMBJ14AHE3_A/I 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), 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 (IPPM), and 600 W peak pulse power (PPPM) with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial and automotive electronics.
For engineers reviewing the SMBJ14AHE3_A/I datasheet, SMBJ14AHE3_A/I pinout, SMBJ14AHE3_A/I application, or SMBJ14AHE3_A/I equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), junction temperature range (−55 to +150 °C), and RoHS-compliant packaging details required for ESD/surge protection design-in and BOM validation.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, optimized for fast response (<1 ns) to transient overvoltages induced by inductive switching or lightning surges. Its glass-passivated junction ensures stable VBR tolerance and low incremental surge resistance under repetitive 10/1000 µs pulses at 0.01% duty cycle.
The SMBJ14AHE3_A/I is rated for 5.0 W steady-state power dissipation on infinite heatsink at TA = 50 °C and supports 100 A non-repetitive forward surge current (IFSM) per 8.3 ms half-sine wave. Its MSL Level 1 moisture sensitivity and 260 °C lead-free reflow compatibility align with automated SMT assembly requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 14 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC signal line operating margin. |
| VBR min/max | 15.6 V / 17.2 V at IT = 1 mA - Confirmed breakdown threshold range ensuring reliable turn-on during transients without premature conduction. |
| VC @ IPPM | 23.2 V at 25.9 A - Clamped voltage seen by protected circuit during 600 W surge; limits stress on downstream ICs or MOSFETs. |
| PPPM | 600 W - Peak pulse power handling with 10/1000 µs waveform; validates robustness against IEC 61000-4-5 Level 4 surges. |
| TJ max | +150 °C - Maximum junction temperature enabling operation in under-hood automotive or high-ambient industrial environments. |
| RθJA | 100 °C/W - Thermal resistance from junction to ambient on standard 0.2" × 0.2" copper pads; informs PCB thermal layout requirements. |
| AEC-Q101 | Qualified - Certified for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC specification. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode identified by band marking; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when V > VBR, clamping voltage to VC. |
| Anode (unbanded end) | Reference node | Typically tied to system ground or lower-potential rail; completes current path during clamping event. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Enables protection against high-energy transients per IEC 61000-4-5 without derating in compact SMB footprint. |
| AEC-Q101 qualified | Validates suitability for automotive powertrain, body control, and ADAS modules requiring long-term field reliability. |
| MSL Level 1 rating | Supports unlimited floor life and 260 °C peak reflow profile - eliminates baking requirements for production SMT lines. |
| Glass passivated junction | Ensures stable VBR over time and temperature, minimizing drift in critical clamping performance across -55 to +150 °C. |
| Low clamping ratio (VC/VBR ≈ 1.4) | Delivers tight voltage limiting - reduces overvoltage stress on 15–20 V-rated components like gate drivers and CAN transceivers. |
Applications
| Automotive Power Supply Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp spikes above 14 V. Use Value: Limits voltage to ≤23.2 V during 600 W surges, preventing damage to 24 V-tolerant microcontrollers and LIN/CAN transceivers. |
Use Scenario: Shielding analog output lines of pressure/temperature sensors from ESD and cable discharge events. IC Role / Device Role / Timing Role: TVS connected across signal and ground to shunt fast transients before reaching ADC input stage. Use Value: Sub-1 ns response and 23.2 V clamping prevent latch-up or parametric shift in precision op-amps and SAR ADCs. |
| Telecom DC Power Input Protection | Consumer Device USB Port Protection |
|
Use Scenario: Safeguarding PoE-powered switches and base stations against induced surges on 48 V DC input rails. IC Role / Device Role / Timing Role: Primary TVS on input side of DC-DC converter, absorbing energy before upstream filter stages. Use Value: 600 W rating handles repeated 10/1000 µs surges while maintaining <1 µA leakage at 14 V for low standby loss. |
Use Scenario: Adding secondary-level surge immunity to USB VBUS lines in portable speakers and smart home hubs. IC Role / Device Role / Timing Role: Unidirectional TVS between VBUS and GND to suppress contact ESD and hot-plug overshoot. Use Value: AEC-Q101 qualification and 100 °C/W RθJA ensure stable clamping performance even in thermally constrained enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ14AHM3_A/I | 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 without redesign. |
| SMBJ14A-E3/52 | Commercial-grade (non-AEC-Q101), same SMB package and VWM/VBR/VC ratings, delivered in 7" tape/reel (750 pcs). | Not qualified for automotive use; suitable for cost-sensitive industrial or consumer applications with lower reliability demands. | Preferred for non-automotive designs where AEC-Q101 is unnecessary and lower unit cost is prioritized. |
Compared with SMBJ14AHE3_A/I, SMBJ14AHM3_A/I offers identical surge performance with halogen-free construction, while SMBJ14A-E3/52 provides equivalent clamping capability without automotive qualification - enabling tiered sourcing based on environmental and reliability requirements.
Availability
SMBJ14AHE3_A/I is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor systems, and telecom power supply designs requiring stable component supply, AEC-Q101 traceability, and RoHS compliance.
Supply support for SMBJ14AHE3_A/I 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, TVS devices, and optoelectronics with emphasis on reliability and application-specific performance.
The SMBJ series was developed for high-power, surface-mount transient suppression in space-constrained automotive and industrial systems - delivering 600 W pulse capability in the compact SMB package with AEC-Q101 validation.
FAQ
What is the maximum clamping voltage of SMBJ14AHE3_A/I at its rated peak pulse current?
The SMBJ14AHE3_A/I has a maximum clamping voltage (VC) of 23.2 V at its rated peak pulse current (IPPM) of 25.9 A, measured under the standardized 10/1000 µs waveform. This value defines the highest voltage imposed on the protected circuit during a full-power transient event and is critical for ensuring downstream components remain within their absolute maximum ratings. The SMBJ14AHE3_A/I maintains this clamping performance across its qualified operating temperature range.
Is SMBJ14AHE3_A/I suitable for automotive applications?
Yes, SMBJ14AHE3_A/I is AEC-Q101 qualified, meaning it has passed rigorous stress tests including temperature cycling, high-temperature reverse bias, and ESD immunity required for automotive electronic modules. Its −55 to +150 °C operating junction temperature range, MSL Level 1 reflow compatibility, and RoHS compliance make it appropriate for engine control units, body electronics, and infotainment systems. The SMBJ14AHE3_A/I is explicitly designated for automotive use via its HE3 suffix.
What does the "HE3" suffix indicate in SMBJ14AHE3_A/I?
The "HE3" suffix in SMBJ14AHE3_A/I denotes a RoHS-compliant, AEC-Q101 qualified version with matte tin-plated leads. The "H" indicates AEC-Q101 qualification, "E3" confirms RoHS compliance and commercial-grade reliability, and the "_A/I" specifies packaging: "A" is the revision code, "I" denotes 13-inch tape-and-reel (3200 pcs). This distinguishes it from non-automotive variants like SMBJ14A-E3/52 and halogen-free alternatives such as SMBJ14AHM3_A/I.
How does SMBJ14AHE3_A/I differ from bidirectional TVS diodes like SMBJ14CA?
SMBJ14AHE3_A/I is unidirectional and functions only in reverse-bias clamping mode, with polarity marked by a cathode band; it blocks forward current up to 3.5 V at 50 A. In contrast, SMBJ14CA is bidirectional and symmetrical, clamping in both directions with no polarity marking. The SMBJ14AHE3_A/I is suited for DC power rail protection where polarity is fixed, while SMBJ14CA fits AC-coupled or differential signal lines. Their VWM and VC values differ accordingly - SMBJ14AHE3_A/I has VWM = 14 V, whereas SMBJ14CA has VWM = 12 V.
What is the thermal resistance of SMBJ14AHE3_A/I, and how does it affect PCB layout?
The SMBJ14AHE3_A/I 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 assumes minimal copper area; increasing pad size or adding internal ground planes lowers RθJA and improves power handling during repetitive surges. For sustained operation near PD = 5.0 W, designers must verify junction temperature using RθJA and ambient conditions - the SMBJ14AHE3_A/I's +150 °C TJ max allows margin in thermally demanding layouts.
SMBJ14AHE3_A/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- 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:
- 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_A/I FAQ
1.How can I place an order for SMBJ14AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ14AHE3_A/I 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_A/I reliable?
The price and inventory of SMBJ14AHE3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ14AHE3_A/I is usually 5 days.
3.What payment methods are accepted for SMBJ14AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ14AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ14AHE3_A/I?
SMBJ14AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ14AHE3_A/I 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_A/I?
For technical support, including SMBJ14AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ14AHE3_A/I requirements.
6.How does Aetrix verify that SMBJ14AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SMBJ14AHE3_A/I 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_A/I meets industry standards.
7.What is the process for return or replacement of SMBJ14AHE3_A/I?
All SMBJ14AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ14AHE3_A/I, 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_A/I part is unused and in its original packaging.
Return procedure for SMBJ14AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ14AHE3_A/I Tags
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