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Vishay General Semiconductor - Diodes Division SMBJ14AHM3_A/I
- Part No.:
- SMBJ14AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ14AHM3_A/I.pdf
- Description:
- TVS DIODE 14VWM 23.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,055
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Product details
Overview
SMBJ14AHM3_A/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in the SMB (DO-214AA) package, designed for clamping inductive switching transients and ESD events on DC power rails 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 (IPPM), and 600 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, microcontrollers, and sensor interfaces in industrial motor drives and automotive body electronics.
For engineers reviewing the SMBJ14AHM3_A/I datasheet, SMBJ14AHM3_A/I pinout, SMBJ14AHM3_A/I application, or SMBJ14AHM3_A/I equivalent, this part delivers verified AEC-Q101 qualification, halogen-free RoHS compliance, and MSL Level 1 moisture sensitivity - critical for high-reliability automotive and industrial PCB designs requiring long-term surge immunity without layout redesign.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-banded polarity, leveraging a glass-passivated silicon junction to achieve sub-nanosecond response time and low incremental surge resistance. Its breakdown voltage range (15.6–17.2 V at 1 mA test current) ensures robust margin above the 14 V operating rail while maintaining tight VBR/VWM ratio.
The SMBJ14AHM3_A/I is rated for 100 A non-repetitive forward surge current (IFSM, 8.3 ms half-sine), junction temperature up to +150 °C, and thermal resistance of 100 °C/W (junction-to-ambient, on 5.0 mm × 5.0 mm copper pads). It meets UL 497B recognition (QVGQ2) and JESD201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 14 V - Maximum continuous reverse working voltage before clamping begins; sets upper limit for protected circuit's DC operating rail. |
| VBR min/max | 15.6 V / 17.2 V at IT = 1 mA - Confirmed breakdown threshold range ensuring reliable turn-on with margin over VWM. |
| VC @ IPPM | 23.2 V at 25.9 A - Clamped voltage during 600 W transient; defines worst-case overvoltage seen by downstream ICs. |
| PPPM | 600 W - Peak pulse power handling with 10/1000 µs waveform; supports repetitive surges at 0.01% duty cycle. |
| IFSM | 100 A - Single half-sine surge current rating (8.3 ms); validates robustness against inductive kickback in relay or solenoid drivers. |
| TJ max | +150 °C - Maximum junction temperature; enables operation in under-hood automotive or enclosed industrial enclosures. |
| Package | SMB (DO-214AA) - Surface-mount outline with 5.59 mm × 4.06 mm footprint and 2.20 mm height; compatible with automated pick-and-place. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads solderable per J-STD-002 and JESD22-B102. Cathode identified by band marking on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or return path; completes clamping loop when transient exceeds VWM. |
| Cathode | High-side connection point | Connected to protected line (e.g., 14 V rail); polarity band identifies this terminal for correct PCB orientation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - required for body control modules and ADAS power supplies. |
| Halogen-free & RoHS-compliant | HM3 suffix denotes full compliance with JEDEC J-STD-609A Class 1 halogen-free definition and EU RoHS Directive 2011/65/EU. |
| 600 W peak pulse power | Handles high-energy transients from 24 V system load dumps or ISO 7637-2 Pulse 5a without degradation - eliminates need for series impedance in many cases. |
| MSL Level 1 | Unlimited floor life at ≤30 °C/85% RH; no bake-out required before reflow - reduces manufacturing overhead and avoids thermal stress on sensitive assemblies. |
| UL 497B recognized (QVGQ2) | Approved for use in telecom and industrial surge protection circuits per Underwriters Laboratories safety standard - simplifies end-equipment certification. |
Applications
| Automotive Body Control Module | Industrial PLC Digital Input |
|---|---|
|
Use Scenario: Protecting 14 V supply rail of BCM microcontroller from alternator load dump and relay coil flyback. IC Role / Device Role / Timing Role: Unidirectional clamping diode placed between VCC and GND, activated within <1 ns upon overvoltage detection. Use Value: Limits transient voltage to ≤23.2 V, preventing latch-up or gate oxide damage in 3.3 V/5 V logic ICs powered from the same rail. |
Use Scenario: Shielding 24 V digital input channel of PLC from field-wiring induced surges and ESD contact discharge. IC Role / Device Role / Timing Role: Standoff protector on input front-end, conducting only during >14 V excursions while remaining high-impedance during normal operation. Use Value: Maintains signal integrity with <1 μA leakage at 14 V, enabling accurate voltage-level sensing without false triggering. |
| DC Motor Drive Power Stage | Automotive Camera Power Supply |
|
Use Scenario: Suppressing inductive kickback from brushed DC motor commutation across H-bridge MOSFETs. IC Role / Device Role / Timing Role: Parallel-connected TVS on low-side MOSFET source-to-ground node, clamping negative voltage spikes during turn-off. Use Value: Withstands 100 A single-pulse surge (8.3 ms), preventing avalanche failure in N-channel MOSFETs during rapid current interruption. |
Use Scenario: Safeguarding 12 V input of rear-view camera module against jump-start transients and battery reversal. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main power entry, coordinated with upstream fuse and downstream LDO regulator. Use Value: AEC-Q101 qualification ensures operation across -40 °C to +125 °C ambient, supporting full vehicle temperature range compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ14AHE3_A/I | Same electrical specs but RoHS-compliant commercial grade (E3), not halogen-free or AEC-Q101 qualified. | Lacks automotive qualification and halogen-free status; suitable for consumer or industrial non-automotive use. | Select SMBJ14AHE3_A/I only if AEC-Q101 and halogen-free requirements are waived. |
| SMBJ14ATR | Same SMB package and VWM/VC, but no AEC-Q101 or halogen-free certification; base P/N uses different suffix convention. | Intended for general-purpose commercial applications; not validated for automotive temperature cycling or humidity testing. | Choose SMBJ14ATR only for cost-sensitive, non-automotive designs where qualification traceability is not required. |
Compared with SMBJ14AHE3_A/I and SMBJ14ATR, the SMBJ14AHM3_A/I uniquely combines AEC-Q101 qualification, halogen-free construction, and full UL 497B recognition - making it the sole option among these three for Tier-1 automotive power rail protection where regulatory compliance and long-term reliability are mandatory.
Availability
SMBJ14AHM3_A/I is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC input protection, DC motor drive power stages, and camera module power supplies requiring stable component supply across extended product lifecycles.
Supply support for SMBJ14AHM3_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, and protection devices with emphasis on high-reliability, high-power, and automotive-qualified components.
The SMBJ series was developed specifically for robust transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where 600 W surge handling and AEC-Q101 validation are essential design requirements.
FAQ
What is the clamping voltage of SMBJ14AHM3_A/I at its rated peak pulse current?
The SMBJ14AHM3_A/I has a maximum clamping voltage (VC) of 23.2 V at its specified peak pulse current (IPPM) of 25.9 A, measured using the standardized 10/1000 µs waveform. This value is guaranteed per the Vishay datasheet revision 09-Jan-2024 and defines the upper voltage limit imposed on protected circuitry during surge events. The SMBJ14AHM3_A/I maintains this clamping performance across its full operating temperature range.
Is SMBJ14AHM3_A/I suitable for automotive applications?
Yes, SMBJ14AHM3_A/I is explicitly AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HM3" and documentation in datasheet 88392. It undergoes rigorous stress testing including temperature cycling, high-temperature reverse bias, and ESD verification - making SMBJ14AHM3_A/I appropriate for under-hood and body electronics in passenger vehicles and commercial vehicles.
What does the "HM3" suffix indicate in SMBJ14AHM3_A/I?
The "HM3" suffix in SMBJ14AHM3_A/I denotes halogen-free, RoHS-compliant construction meeting JEDEC J-STD-609A Class 1 requirements, plus AEC-Q101 qualification. It distinguishes this variant from E3 (RoHS only) and HE3 (RoHS + AEC-Q101 but not halogen-free). The "_A/I" indicates tape-and-reel packaging: "A" = 7″ reel (750 units), "I" = 13″ reel (3200 units).
How does SMBJ14AHM3_A/I differ from bidirectional TVS diodes like SMBJ14CA?
SMBJ14AHM3_A/I is unidirectional and intended for DC line protection with defined polarity (cathode-banded), whereas SMBJ14CA is bidirectional and used on AC or floating signal lines. The SMBJ14AHM3_A/I exhibits forward conduction below ~0.7 V and blocks in reverse up to 14 V, while SMBJ14CA clamps symmetrically in both directions - making SMBJ14AHM3_A/I unsuitable for AC-coupled data lines but optimal for 14 V power rail protection.
What is the maximum operating temperature for SMBJ14AHM3_A/I?
The SMBJ14AHM3_A/I has a maximum junction temperature (TJ) rating of +150 °C and an operating junction/storage temperature range of -55 °C to +150 °C. This allows deployment in high-ambient environments such as engine compartments or sealed industrial enclosures. Derating curves in the datasheet confirm usable power dissipation down to 50% at 125 °C ambient when mounted on recommended 5.0 mm × 5.0 mm copper pads.
SMBJ14AHM3_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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMBJ14AHM3_A/I FAQ
1.How can I place an order for SMBJ14AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ14AHM3_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 SMBJ14AHM3_A/I reliable?
The price and inventory of SMBJ14AHM3_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 SMBJ14AHM3_A/I is usually 5 days.
3.What payment methods are accepted for SMBJ14AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ14AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ14AHM3_A/I?
SMBJ14AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ14AHM3_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 SMBJ14AHM3_A/I?
For technical support, including SMBJ14AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ14AHM3_A/I requirements.
6.How does Aetrix verify that SMBJ14AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SMBJ14AHM3_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 SMBJ14AHM3_A/I meets industry standards.
7.What is the process for return or replacement of SMBJ14AHM3_A/I?
All SMBJ14AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ14AHM3_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 SMBJ14AHM3_A/I part is unused and in its original packaging.
Return procedure for SMBJ14AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ14AHM3_A/I Tags
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DESD3V3E1BL-7B
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Diodes Incorporated
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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