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Vishay General Semiconductor - Diodes Division SMBJ14D-M3/H
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- Part No.:
- SMBJ14D-M3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ14D-M3/H.pdf
- Description:
- TVS DIODE 14VWM 22.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,670
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Product details
Overview
SMBJ14D-M3/H 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), 15.8–17.0 V breakdown voltage (VBR) at 1 mA, 22.9 V maximum clamping voltage (VC) at 26.2 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 power supplies.
For engineers reviewing the SMBJ14D-M3/H datasheet, SMBJ14D-M3/H pinout, SMBJ14D-M3/H application, or SMBJ14D-M3/H equivalent, key selection criteria include unidirectional polarity, ±3.5 % VBR tolerance, low leakage (<0.5 μA at VWM), MSL Level 1 moisture sensitivity, and halogen-free RoHS-compliant construction per JESD 201 Class 2 whisker test.
Technical Context
This TVS diode operates as a clamping device in parallel with protected circuitry, triggering when reverse voltage exceeds VBR to divert surge current away from sensitive components. Its low incremental surge resistance and fast response time ensure effective suppression of ESD, lightning-induced surges, and inductive switching transients.
The SMBJ14D-M3/H is rated for 150 °C maximum junction temperature, with thermal resistance RθJA = 125 °C/W (on minimum pad layout) and RθJM = 20 °C/W, enabling reliable operation under repetitive surge conditions up to 0.01 % duty cycle when mounted per recommended PCB pad dimensions (5.0 mm × 5.0 mm copper area).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 14 V - maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 15.8 V / 17.0 V at 1 mA - tight ±3.5 % tolerance ensures predictable turn-on threshold |
| VC @ IPPM | 22.9 V at 26.2 A - clamping voltage limits stress on downstream components during surge |
| PPPM | 600 W with 10/1000 μs waveform - defines energy-handling capability for transient events |
| ID @ VWM | <0.5 μA - minimal leakage preserves signal integrity and system efficiency |
| TJ max | +150 °C - supports operation in high-temperature industrial environments |
| Package | SMB (DO-214AA) - surface-mount footprint compatible with automated assembly and IPC-7351B standards |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, halogen-free, RoHS-compliant, M3 suffix indicating industrial grade and JESD 201 Class 2 whisker resistance. Polarity marked by cathode band on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional configuration |
| Cathode (banded end) | Reverse-biased clamping terminal | Connected to protected line (e.g., 14 V rail or signal trace); conducts during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| ±3.5 % VBR tolerance | Enables precise clamping threshold control without design margin over-engineering |
| 600 W peak pulse power | Handles IEC 61000-4-5 Level 4 surges (4 kV line-earth) on 12–15 V rails |
| Low leakage <0.5 μA | Minimizes standby power loss and avoids false triggering in high-impedance circuits |
| MSL Level 1 rating | Allows unlimited floor life and reflow compatibility up to 260 °C peak temperature |
| Halogen-free, RoHS-compliant | Meets environmental compliance requirements for industrial and telecom equipment |
Applications
| Industrial Motor Drive Protection | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Suppresses inductive kickback from relay coils and solenoid drivers in PLC I/O modules. IC Role / Device Role / Timing Role: Unidirectional TVS placed across 14 V DC supply rail upstream of LDO regulators and microcontrollers. Use Value: Limits transient voltage to ≤22.9 V during 26.2 A surges, preventing latch-up or gate oxide damage in 3.3 V/5 V logic. | Use Scenario: Protects LIN bus transceivers and sensor inputs from load dump and jump-start events. IC Role / Device Role / Timing Role: Clamps 14 V battery line against ISO 7637-2 Pulse 5a (75 V/350 ms) with fast response <1 ns. Use Value: Maintains <0.5 μA leakage to avoid disrupting low-power sleep modes while surviving 600 W pulses. |
| Telecom Power Supply Input | Consumer Appliance Mainboard |
Use Scenario: Guards AC-DC adapter output stage against lightning-induced surges entering via PoE or external ports. IC Role / Device Role / Timing Role: Mounted directly at 12 V/14 V output node before DC-DC converters and Ethernet PHYs. Use Value: Achieves 22.9 V clamping at 26.2 A, reducing downstream TVS stress and enabling smaller secondary protection devices. | Use Scenario: Shields MCU GPIOs and display interface lines from ESD and relay switching noise in washing machine control boards. IC Role / Device Role / Timing Role: Placed on 14 V auxiliary rail powering fan drivers and display backlight ICs. Use Value: Tight 15.8–17.0 V VBR window ensures early clamping before 18 V-rated components reach breakdown. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ14A-M3/H | Same VWM/VBR/VC specs but A-suffix denotes standard-grade (non-industrial) qualification | Lacks JESD 201 Class 2 whisker testing and M3 industrial reliability screening | Select SMBJ14D-M3/H for extended temperature cycling and long-life industrial deployments |
| SMCJ14A | Higher 1500 W PPPM rating, larger SMC (DO-214AB) package, same 14 V VWM | Requires larger PCB footprint and higher thermal mass; suited for higher-energy surges | Choose SMBJ14D-M3/H where space-constrained SMB layout and 600 W capability meet system-level surge requirements |
Compared with SMBJ14A-M3/H, the SMBJ14D-M3/H provides verified industrial-grade reliability; compared with SMCJ14A, it delivers identical clamping performance in 40 % less board area while maintaining full 600 W surge handling for typical IEC 61000-4-4/5 compliance.
Availability
SMBJ14D-M3/H is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, telecom power supplies, and consumer appliance mainboards requiring stable component supply and long-term lifecycle support.
Supply support for SMBJ14D-M3/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, precision, and application-specific optimization.
The SMBJ series is engineered for robust transient suppression in harsh environments, targeting industrial automation, automotive subsystems, and infrastructure equipment where consistent clamping behavior and long-term stability are critical.
FAQ
What is the breakdown voltage range of SMBJ14D-M3/H?
The SMBJ14D-M3/H has a specified breakdown voltage (VBR) range of 15.8 V to 17.0 V at 1 mA test current, reflecting its tight ±3.5 % tolerance. This narrow window ensures repeatable clamping onset across production lots and temperature ranges, making SMBJ14D-M3/H suitable for designs where overvoltage margin must be tightly controlled without excessive derating.
Does SMBJ14D-M3/H support bidirectional transient suppression?
No, SMBJ14D-M3/H is a unidirectional TVS diode, indicated by the "D" suffix (not "CD"). It protects against positive transients on the cathode side relative to anode (ground). For bidirectional protection - such as AC lines or differential buses - a part with "CD" suffix like SMBJ14CD-M3/H would be required, as confirmed in Vishay's ordering matrix and electrical characteristics table.
What is the maximum clamping voltage of SMBJ14D-M3/H at rated surge current?
The SMBJ14D-M3/H exhibits a maximum clamping voltage (VC) of 22.9 V at its rated peak pulse current (IPPM) of 26.2 A, measured using the standardized 10/1000 μs double-exponential waveform. This VC value defines the upper voltage limit imposed on protected circuitry during worst-case surge events, directly influencing downstream component voltage ratings and system-level immunity margins.
Is SMBJ14D-M3/H compliant with lead-free and RoHS requirements?
Yes, SMBJ14D-M3/H carries the "M3" suffix, which explicitly denotes halogen-free, RoHS-compliant construction and matte tin-plated leads qualified to J-STD-002 and JESD 22-B102 solderability standards. It also passes JESD 201 Class 2 whisker testing, confirming suitability for high-reliability industrial applications where intermetallic growth could compromise long-term solder joint integrity.
What is the thermal resistance of SMBJ14D-M3/H under standard mounting conditions?
SMBJ14D-M3/H has a typical junction-to-ambient thermal resistance (RθJA) of 125 °C/W when mounted on the minimum recommended PCB pad layout, and 100 °C/W on a 5.0 mm × 5.0 mm copper pad area. Its junction-to-mount (RθJM) is 20 °C/W, supporting thermal management in compact layouts where heatsinking is limited - critical for sustained operation near its 150 °C maximum junction temperature.
SMBJ14D-M3/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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 14V
- Voltage - Breakdown (Min):
- 15.8V
- Voltage - Clamping (Max) @ Ipp:
- 22.9V
- Current - Peak Pulse (10/1000µs):
- 26.2A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMBJ14D-M3/H FAQ
1.How can I place an order for SMBJ14D-M3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ14D-M3/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 SMBJ14D-M3/H reliable?
The price and inventory of SMBJ14D-M3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ14D-M3/H is usually 5 days.
3.What payment methods are accepted for SMBJ14D-M3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ14D-M3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ14D-M3/H?
SMBJ14D-M3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ14D-M3/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 SMBJ14D-M3/H?
For technical support, including SMBJ14D-M3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ14D-M3/H requirements.
6.How does Aetrix verify that SMBJ14D-M3/H is sourced from the original manufacturer or authorized distributors?
All SMBJ14D-M3/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 SMBJ14D-M3/H meets industry standards.
7.What is the process for return or replacement of SMBJ14D-M3/H?
All SMBJ14D-M3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ14D-M3/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 SMBJ14D-M3/H part is unused and in its original packaging.
Return procedure for SMBJ14D-M3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ14D-M3/H Tags
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