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Vishay General Semiconductor - Diodes Division SMBJ14AHE3_A/H
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- Part No.:
- SMBJ14AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ14AHE3_A/H.pdf
- Description:
- TVS DIODE 14VWM 23.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,441
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Product details
Overview
SMBJ14AHE3_A/H 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 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 rating with 10/1000 μs waveform - deployed in automotive body control modules, industrial sensor interfaces, and telecom power supply inputs.
For engineers reviewing the SMBJ14AHE3_A/H datasheet, SMBJ14AHE3_A/H pinout, SMBJ14AHE3_A/H application, or SMBJ14AHE3_A/H equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), clamping performance under surge conditions, and direct alternatives for circuit protection design-in.
Technical Context
This TVS diode operates as a unidirectional shunt protector: it remains high-impedance below VWM = 14 V, then rapidly avalanches above VBR to clamp transient energy into ground. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (ID ≤ 1.0 μA at VWM), while the SMB package supports automated SMT placement and meets MSL Level 1 (260 °C reflow peak).
Designed for repetitive transients up to 0.01% duty cycle, SMBJ14AHE3_A/H sustains 600 W peak pulse power with minimal voltage overshoot - critical for protecting MOSFET gates, microcontroller I/O pins, and CAN/LIN bus receivers against ISO 7637-2 pulses and inductive switching spikes in 12 V automotive systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 14 V - Maximum continuous reverse operating voltage before significant leakage; defines safe DC rail margin for 12 V systems. |
| VBR (Breakdown Voltage) | 15.6–17.2 V at IT = 1 mA - Tight tolerance ensures predictable turn-on during fast transients without premature conduction. |
| VC (Clamping Voltage) | 23.2 V at IPPM = 25.9 A - Limits downstream voltage stress during 10/1000 μs surge; enables robust protection of 24 V-tolerant ICs. |
| PPPM (Peak Pulse Power) | 600 W - Sustains high-energy surges (e.g., ISO 16750-2 Load Dump pulse) without failure when mounted per recommended pad layout. |
| ID (Reverse Leakage) | ≤ 1.0 μA at VWM - Negligible standby current preserves battery life in always-on automotive modules. |
| TJ max. | 150 °C - Enables operation in under-hood environments and industrial enclosures with elevated ambient temperatures. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per JESD22-A114. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, cathode-banded unidirectional configuration. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); matte tin-plated leads, RoHS-compliant and halogen-free (HE3 suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input/Line side | Connected to protected line (e.g., 12 V supply rail or signal trace); conducts surge current toward cathode during overvoltage. |
| Cathode | Output/Ground side | Connected to system ground or low-impedance return path; establishes polarity-sensitive clamping action. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Handles high-energy transients common in automotive load-dump and inductive-switching events without degradation. |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive electronics use - includes HTOL, temperature cycling, and ESD testing per JEDEC standards. |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes voltage overshoot during clamping, reducing stress on downstream 24 V-rated components like LIN transceivers. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns or baking requirements. |
| Glass passivated junction | Ensures stable VBR over time and temperature, critical for long-life deployments in industrial control cabinets. |
Applications
| Automotive Body Control Module | Industrial Sensor Interface |
|---|---|
Use Scenario: Protects 12 V power input of BCM microcontrollers and relay drivers against load dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between VBAT and GND, clamping surges within 1 ns response time. Use Value: Prevents latch-up or permanent damage to MCU power domains during ISO 16750-2 Test Pulse 5a (load dump up to 60 V). |
Use Scenario: Shields analog output lines (4–20 mA) and digital I/O of pressure/temperature sensors in factory automation PLCs. IC Role / Device Role / Timing Role: Low-leakage TVS on sensor signal path, positioned upstream of op-amp input stage. Use Value: Maintains signal integrity by limiting induced transients to <24 V while adding <1 pF capacitance at 0 V bias. |
| Telecom Power Supply Input | Consumer Appliance Motor Driver |
Use Scenario: Guards primary-side DC bus of PoE-powered network switches against lightning-induced surges on Ethernet cables. IC Role / Device Role / Timing Role: Primary-level TVS on 48 V input rail, coordinated with MOV and fuse for staged protection. Use Value: Clamps 10/1000 μs surges to 23.2 V before secondary-side DC/DC converters, avoiding overvoltage shutdown. |
Use Scenario: Protects gate driver ICs and MOSFETs in washing machine motor inverters from back-EMF spikes during commutation. IC Role / Device Role / Timing Role: Localized TVS across half-bridge leg supply rails, absorbing inductive kickback energy. Use Value: Extends MOSFET lifetime by limiting VDS overshoot to ≤23.2 V during 100 A+ switching 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_A/H | Halogen-free variant with identical electrical specs and AEC-Q101 qualification; same SMB package and pinout. | No functional difference; selected where halogen-free compliance is mandated by OEM environmental policy. | Direct material substitution when RoHS + halogen-free certification is required without redesign. |
| SMAJ14AHE3/A | Lower 400 W PPPM rating, higher RθJA (150 °C/W), SMA (DO-214AC) package - smaller footprint but reduced thermal capability. | Suitable only for lower-energy transients (e.g., ESD-only protection); not recommended for automotive load dump. | Use only in space-constrained consumer designs with ≤400 W surge exposure and ambient <85 °C. |
Compared with SMBJ14AHE3_A/H, SMBJ14AHM3_A/H offers identical protection performance with halogen-free construction, while SMAJ14AHE3/A trades 33% lower pulse power and higher thermal resistance for smaller board area - making SMBJ14AHE3_A/H the optimal choice for AEC-Q101-compliant 600 W surge immunity.
Availability
SMBJ14AHE3_A/H is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor interfaces, telecom power supplies, and consumer appliance motor drivers requiring stable component supply with full AEC-Q101 traceability and RoHS compliance.
Supply support for SMBJ14AHE3_A/H 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 automotive-grade qualification.
The SMBJ series is engineered for high-reliability transient suppression in harsh environments - targeting 12 V/24 V automotive, industrial automation, and telecom infrastructure where consistent clamping and long-term stability are mandatory.
FAQ
What is the clamping voltage of SMBJ14AHE3_A/H at its rated peak pulse current?
The SMBJ14AHE3_A/H has a maximum clamping voltage (VC) of 23.2 V at its rated peak pulse current (IPPM) of 25.9 A under a 10/1000 μs waveform. This value is measured with the device mounted on 0.2" × 0.2" copper pads per JEDEC standards and ensures downstream components see no more than 23.2 V during surge events - critical for safeguarding 24 V-tolerant ICs in automotive and industrial applications. The SMBJ14AHE3_A/H maintains this clamping performance across its full operating temperature range (−55 °C to +150 °C).
Is SMBJ14AHE3_A/H qualified for automotive use?
Yes, SMBJ14AHE3_A/H is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3" and documentation in datasheet 88392 (Revision 09-Jan-2024). It undergoes rigorous stress testing including high-temperature operating life (HTOL), temperature cycling, and ESD per JESD22-A114, making it suitable for under-hood and chassis-mounted automotive electronics such as body control modules and ADAS sensor power supplies. The SMBJ14AHE3_A/H meets all requirements for Grade 1 (−40 °C to +125 °C ambient) and extended junction temperature operation up to 150 °C.
What is the reverse leakage current specification for SMBJ14AHE3_A/H at its stand-off voltage?
The SMBJ14AHE3_A/H specifies a maximum reverse leakage current (ID) of 1.0 μA at its stand-off voltage (VWM) of 14 V and TA = 25 °C. This ultra-low leakage ensures minimal power loss in always-on circuits - essential for battery-backed automotive modules and energy-sensitive industrial sensors. Leakage remains below 5 μA up to TJ = 125 °C, preserving system efficiency across the full operational temperature range. The SMBJ14AHE3_A/H achieves this via glass-passivated junction technology, which stabilizes leakage behavior over time and thermal cycling.
How does the SMBJ14AHE3_A/H package compare to SMAJ14AHE3/A in terms of thermal performance?
The SMBJ14AHE3_A/H uses the SMB (DO-214AA) package with a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W, whereas the SMAJ14AHE3/A uses the smaller SMA (DO-214AC) package with RθJA = 150 °C/W. This 50 °C/W difference means SMBJ14AHE3_A/H dissipates heat 1.5× more effectively under identical PCB layout conditions - enabling reliable 600 W surge handling in automotive and industrial environments. The SMBJ14AHE3_A/H's larger copper pad area requirement (0.2" × 0.2" per terminal) directly supports this superior thermal capability.
Can SMBJ14AHE3_A/H be used in bidirectional protection circuits?
No, SMBJ14AHE3_A/H is a unidirectional TVS diode, indicated by the "A" suffix and cathode band marking. It conducts only in reverse bias above VBR and blocks forward current - making it unsuitable for AC or bidirectional signal line protection. For bidirectional applications (e.g., RS-485, CAN bus), Vishay offers the SMBJ14CA variant (with "CA" suffix), which provides symmetrical clamping in both polarities. Using SMBJ14AHE3_A/H in place of a bidirectional device would leave positive-going transients unprotected and risk catastrophic failure. Always verify polarity designation before selecting SMBJ14AHE3_A/H.
SMBJ14AHE3_A/H 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/H FAQ
1.How can I place an order for SMBJ14AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ14AHE3_A/H 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/H reliable?
The price and inventory of SMBJ14AHE3_A/H 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/H is usually 5 days.
3.What payment methods are accepted for SMBJ14AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ14AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ14AHE3_A/H?
SMBJ14AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ14AHE3_A/H 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/H?
For technical support, including SMBJ14AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ14AHE3_A/H requirements.
6.How does Aetrix verify that SMBJ14AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SMBJ14AHE3_A/H 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/H meets industry standards.
7.What is the process for return or replacement of SMBJ14AHE3_A/H?
All SMBJ14AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ14AHE3_A/H, 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/H part is unused and in its original packaging.
Return procedure for SMBJ14AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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