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Vishay General Semiconductor - Diodes Division SMBJ14AHM3/H
- Part No.:
- SMBJ14AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ14AHM3/H.pdf
- Description:
- TVS DIODE 14VWM 23.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,400
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Product details
Overview
SMBJ14AHM3/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 sensitive electronics. 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 (10/1000 µs waveform), commonly deployed on DC power rails and I/O lines in industrial motor drives.
For engineers reviewing the SMBJ14AHM3/H datasheet, SMBJ14AHM3/H pinout, SMBJ14AHM3/H application, or SMBJ14AHM3/H equivalent, this page delivers verified electrical specs, thermal behavior under surge conditions, AEC-Q101 qualification status, and real-world protection use cases - all aligned to Vishay's 88392 specification document dated 09-Jan-2024.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, leveraging a glass-passivated silicon junction for fast response (<1 ns) and low incremental surge resistance. Its 100 °C/W junction-to-ambient thermal resistance (RθJA) and 20 °C/W junction-to-lead (RθJL) define thermal limits under repetitive surge duty cycles up to 0.01 %.
The SMBJ14AHM3/H is rated for -55 °C to +150 °C operating junction temperature, supports 100 A non-repetitive forward surge current (IFSM, 8.3 ms half-sine), and exhibits 1.0 µA max reverse leakage (ID) at VWM - confirming suitability for low-power sensor interfaces and battery-backed systems where standby current integrity matters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 14 V - Maximum continuous reverse voltage before significant leakage; sets upper limit for protected line operating voltage. |
| VBR (Breakdown Voltage) | 15.6–17.2 V at 1 mA - Confirmed avalanche onset range; ensures reliable triggering above normal operating margin. |
| VC (Clamping Voltage) | 23.2 V at IPPM = 25.9 A - Peak voltage seen by downstream circuit during 10/1000 µs transient; defines worst-case stress level. |
| PPPM (Peak Pulse Power) | 600 W (10/1000 µs) - Sustains high-energy transients like ISO 7637-2 Pulse 1/2a without failure; validated per Fig. 1 curve. |
| ID (Reverse Leakage) | 1.0 µA max at VWM - Minimal standby current draw; critical for low-power IoT sensor nodes and battery management. |
| TJ max. | +150 °C - Enables operation in under-hood automotive or industrial enclosures without derating below full rating. |
| Package | SMB (DO-214AA) - Standardized 2-pin surface-mount outline (5.21 × 4.06 × 2.20 mm); compatible with automated pick-and-place and reflow. |
Pinout & Package
Package: SMB (DO-214AA), molded case with matte tin-plated leads, MSL Level 1 (JEDEC J-STD-020), 260 °C peak reflow profile.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Current entry terminal during forward conduction | Connected to lower-potential side (e.g., ground or return path) in unidirectional clamp configuration. |
| Cathode (banded end) | Current exit terminal during forward conduction; clamping node in reverse bias | Connected to protected line (e.g., 12 V rail); avalanche conduction occurs when line exceeds VBR relative to anode. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Withstands automotive load-dump surges (ISO 16750-2) and inductive switching spikes without degradation. |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per JESD22-A114. |
| Halogen-free & RoHS-compliant | Meets EU Directive 2011/65/EU and IPC-1752A material declarations; suitable for green manufacturing programs. |
| Low clamping ratio (VC/VBR ≈ 1.47) | Minimizes overvoltage overshoot during clamping; reduces risk of latch-up or gate oxide damage in MOSFETs and ICs. |
| Fast response time (<1 ns) | Engages before transient energy couples into protected ICs; essential for safeguarding high-speed communication lines. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Card |
|---|---|
|
Use Scenario: Protects 12 V supply rail and CAN/LIN signal lines from load dump and alternator ripple in BCM units. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between power rail and ground, triggered within nanoseconds of overvoltage event. Use Value: Limits rail voltage to ≤23.2 V during 600 W transients, preventing reset or latch-up of microcontrollers and transceivers per ISO 7637-2. |
Use Scenario: Shields 24 V digital input optocoupler front-end from field-wiring induced surges in factory automation cabinets. IC Role / Device Role / Timing Role: Standoff-clamp protector mounted directly at connector entry point, shunting surge current away from isolation barrier. Use Value: Maintains <1 µA leakage at 24 V nominal, ensuring accurate logic-level detection while clamping 25.9 A surges to safe levels. |
| Consumer Appliance Motor Drive Board | Telecom Power Supply Front-End |
|
Use Scenario: Guards gate driver ICs and bootstrap circuits against inductive kickback from BLDC motor windings. IC Role / Device Role / Timing Role: Fast-acting unidirectional clamp on low-side FET source or high-side bootstrap rail. Use Value: Clamps 10/1000 µs transients to 23.2 V with <1 ns response, preventing gate oxide rupture in 600 V MOSFETs. |
Use Scenario: Installed across primary-side DC bus (e.g., 48 V telecom rectifier output) to absorb lightning-induced surges. IC Role / Device Role / Timing Role: Primary overvoltage suppression element upstream of DC-DC converters and PMICs. Use Value: Delivers 600 W pulse handling with 150 °C max junction temperature, enabling compact heatsink-free layout in space-constrained modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ14AHE3/H | RoHS-compliant but not halogen-free; lacks AEC-Q101 qualification; same VWM/VBR/VC/PPPM specs. | Approved for commercial/industrial use only; not certified for automotive under-hood deployment. | Select when halogen-free content or automotive qualification is not required; lower cost alternative for non-automotive BOMs. |
| SMBJ14A-M3/52 | Same halogen-free and RoHS compliance as SMBJ14AHM3/H, but packaged in 7" tape-and-reel (750 pcs) vs. H-code (750 pcs, 7" reel with specific reel ID). | No functional difference; identical electrical and thermal performance; differs only in packaging logistics and traceability. | Choose based on procurement channel preference or distributor inventory alignment; no design impact. |
Compared with SMBJ14AHE3/H and SMBJ14A-M3/52, the SMBJ14AHM3/H uniquely combines halogen-free construction, RoHS compliance, and AEC-Q101 qualification - making it the sole option among these three for automotive-grade production requiring full PPAP documentation and extended temperature validation.
Availability
SMBJ14AHM3/H is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC input protection, and telecom power supply front-ends requiring stable component supply, long-term lifecycle support, and AEC-Q101 traceability.
Supply support for SMBJ14AHM3/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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The SMBJ series was engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where robustness against ESD, EFT, and surge events is mission-critical.
FAQ
What is the clamping voltage of SMBJ14AHM3/H at its rated peak pulse current?
The SMBJ14AHM3/H has a maximum clamping voltage (VC) of 23.2 V at its rated peak pulse current (IPPM) of 25.9 A, measured using the standard 10/1000 µs double-exponential waveform. This value is confirmed in Table 1 of Vishay's Document Number 88392 and defines the upper voltage limit imposed on protected circuitry during transient events. The SMBJ14AHM3/H maintains this clamping performance across its full operating temperature range (-55 °C to +150 °C).
Is SMBJ14AHM3/H qualified for automotive applications?
Yes, SMBJ14AHM3/H is AEC-Q101 qualified, as indicated by the "HM3" suffix per Vishay's ordering nomenclature and confirmed in the "MECHANICAL DATA" section of Document 88392. This qualification covers stress tests including temperature cycling, high-temperature reverse bias (HTRB), and electrostatic discharge (ESD), making SMBJ14AHM3/H suitable for under-hood and chassis-mounted automotive electronics where reliability under thermal and electrical stress is mandatory.
What does the "H" in SMBJ14AHM3/H signify?
The "H" in SMBJ14AHM3/H denotes the preferred package code for 7-inch diameter plastic tape-and-reel delivery containing 750 units, as defined in Vishay's ORDERING INFORMATION table (page 3 of Document 88392). It is a logistics identifier - not a functional or electrical variant - and carries no impact on electrical specifications, thermal performance, or qualification status of the SMBJ14AHM3/H device itself.
How does SMBJ14AHM3/H differ from bidirectional variants like SMBJ14CA?
The SMBJ14AHM3/H is unidirectional, meaning it conducts only in reverse breakdown (cathode-to-anode) and blocks forward current beyond ~3.5 V, whereas SMBJ14CA is bidirectional and symmetrical - clamping in both polarities with no polarity marking. This makes SMBJ14AHM3/H appropriate for DC rail protection with defined ground reference, while SMBJ14CA suits AC-coupled or floating signal lines. Their VWM, VBR, and VC values differ accordingly due to structural asymmetry.
What is the maximum reverse leakage current for SMBJ14AHM3/H at 25 °C?
The maximum reverse leakage current (ID) for SMBJ14AHM3/H is 1.0 µA at its stand-off voltage (VWM) of 14 V and ambient temperature of 25 °C, as specified in the ELECTRICAL CHARACTERISTICS table (page 2 of Document 88392). This low leakage ensures minimal power loss in always-on systems such as automotive wake-up circuits or battery-powered sensors, preserving battery life and signal integrity without compromising protection capability.
SMBJ14AHM3/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:
- 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:
- 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/H FAQ
1.How can I place an order for SMBJ14AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ14AHM3/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 SMBJ14AHM3/H reliable?
The price and inventory of SMBJ14AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ14AHM3/H is usually 5 days.
3.What payment methods are accepted for SMBJ14AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ14AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ14AHM3/H?
SMBJ14AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ14AHM3/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 SMBJ14AHM3/H?
For technical support, including SMBJ14AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ14AHM3/H requirements.
6.How does Aetrix verify that SMBJ14AHM3/H is sourced from the original manufacturer or authorized distributors?
All SMBJ14AHM3/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 SMBJ14AHM3/H meets industry standards.
7.What is the process for return or replacement of SMBJ14AHM3/H?
All SMBJ14AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ14AHM3/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 SMBJ14AHM3/H part is unused and in its original packaging.
Return procedure for SMBJ14AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ14AHM3/H Tags
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