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Vishay General Semiconductor - Diodes Division SMBJ14D-M3/I
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- Part No.:
- SMBJ14D-M3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ14D-M3/I.pdf
- Description:
- TVS DIODE 14VWM 22.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,851
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Product details
Overview
SMBJ14D-M3/I 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), 15.8–17.0 V breakdown voltage (VBR) at 1 mA, 22.9 V clamping voltage (VC) at 26.2 A peak pulse current, and 600 W peak pulse power rating with 10/1000 μs waveform.
For engineers reviewing the SMBJ14D-M3/I datasheet, SMBJ14D-M3/I pinout, SMBJ14D-M3/I application, or SMBJ14D-M3/I equivalent, key selection criteria include clamping performance under surge conditions, low leakage (<0.5 μA at VWM), tight ±3.5% VBR tolerance, MSL Level 1 moisture sensitivity, and halogen-free RoHS-compliant construction for industrial-grade reliability.
Technical Context
This TVS diode operates as a unidirectional clamping device, leveraging avalanche breakdown to limit transient voltages before they damage downstream ICs or MOSFETs. Its low incremental surge resistance and fast response time ensure effective suppression of ESD, lightning-induced surges, and inductive switching spikes.
The SMBJ14D-M3/I is rated for junction temperatures from –55 °C to +150 °C, with thermal resistance RθJA = 125 °C/W on minimum pad layout and RθJM = 20 °C/W to mount. It meets UL 497B recognition (QVGQ2) and complies with JESD201 Class 2 whisker testing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 14 V - Maximum continuous reverse operating voltage before significant conduction begins |
| VBR (Breakdown Voltage) | 15.8–17.0 V at 1 mA - Tight ±3.5% tolerance ensures predictable turn-on threshold |
| VC (Clamping Voltage) | 22.9 V at IPPM = 26.2 A - Limits transient voltage seen by protected circuit during 10/1000 μs surge |
| PPPM (Peak Pulse Power) | 600 W - Sustains high-energy transients without failure under standardized 10/1000 μs waveform |
| ID (Reverse Leakage) | <0.5 μA at VWM - Minimizes standby power loss and avoids false triggering in low-power systems |
| TJ max | +150 °C - Enables operation in harsh industrial or automotive under-hood environments |
| Package | SMB (DO-214AA) - Surface-mount footprint compatible with automated assembly and IPC-7351 standard land patterns |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads, halogen-free and RoHS-compliant (M3 suffix), MSL Level 1, LF peak reflow temperature 260 °C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to ground or low-impedance return path; conducts avalanche current during overvoltage events |
| Anode | Protected line input | Connected to signal/power line requiring clamping; reverse-biased during normal operation |
Key Features
| Feature | Design Value |
|---|---|
| ±3.5 % VBR tolerance | Enables precise clamping margin control without overspecifying protection level or risking premature conduction |
| 600 W peak pulse power (10/1000 μs) | Handles high-energy transients common in motor drives, power supplies, and telecom interfaces |
| Low leakage <0.5 μA at VWM | Preserves signal integrity and battery life in always-on sensor and IoT applications |
| MSL Level 1, 260 °C reflow compatible | Eliminates pre-baking requirements and supports standard SMT assembly processes |
| UL 497B recognized (QVGQ2) | Validates suitability for telecom and industrial surge protection per safety-critical standards |
Applications
| Industrial Motor Control | Automotive Body Electronics |
|---|---|
Use Scenario: Protection of gate drivers and microcontroller I/O lines against inductive kickback from solenoids and relays. IC Role / Device Role: Unidirectional TVS clamp placed between MCU GPIO and load switch output. Use Value: Clamps transients to ≤22.9 V, preventing latch-up or permanent damage to 3.3 V/5 V logic inputs. |
Use Scenario: Surge suppression on LIN bus lines and door module sensor inputs exposed to load dump and jump-start events. IC Role / Device Role: Primary overvoltage clamp on 12 V supply rail feeding body control unit (BCU) peripherals. Use Value: Withstands 600 W pulses while maintaining <0.5 μA leakage-critical for low-quiescent-current modules. |
| Consumer Power Adapters | Telecom Interface Protection |
Use Scenario: Secondary-side DC output protection in USB-C PD adapters against output short-circuit transients. IC Role / Device Role: Standoff-rated TVS across regulated 5–20 V output rails to prevent overvoltage propagation to connected devices. Use Value: 14 V VWM aligns with USB PD 3.0 15 V profile; 22.9 V VC ensures safe margin below typical 24 V fault thresholds. |
Use Scenario: Ethernet PHY port protection against ESD and lightning-induced surges on RJ45 magnetics secondary side. IC Role / Device Role: Unidirectional clamp on differential pairs referenced to chassis ground. Use Value: Low capacitance and fast response preserve 100BASE-TX signal integrity while meeting IEC 61000-4-5 Level 3 (1 kV/2 kV) surge immunity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ14A-M3/I | Bidirectional variant; symmetric clamping in both polarities; same VWM (14 V), VC (22.9 V), and PPPM (600 W) | Required where AC-coupled or dual-polarity signals (e.g., RS-485, CAN bus) need protection without polarity biasing | Select SMBJ14A-M3/I only if bidirectional clamping is explicitly required; SMBJ14D-M3/I is optimal for DC rails with defined polarity. |
| SMCJ14A-M3/I | Larger SMC (DO-214AB) package; higher thermal mass; identical electrical specs but 1500 W PPPM rating and lower RθJA (60 °C/W) | Suitable for higher-reliability or higher-duty-cycle surge environments where PCB space allows larger footprint | Choose SMCJ14A-M3/I when sustained surge repetition or elevated ambient temperature (>85 °C) demands superior thermal derating. |
Compared with SMBJ14A-M3/I, the SMBJ14D-M3/I offers polarity-specific clamping ideal for DC power/signal lines, while SMCJ14A-M3/I provides higher surge endurance in larger package-selection depends on board space, polarity requirements, and thermal budget.
Availability
SMBJ14D-M3/I is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, and consumer power adapter designs requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for SMBJ14D-M3/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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, precision, and industrial-grade qualification.
The SMBJ series is part of Vishay's TRANSZORB® TVS portfolio, engineered specifically for high-energy transient suppression in power supplies, automotive ECUs, and industrial automation systems where robustness and consistency are critical.
FAQ
What is the maximum clamping voltage of SMBJ14D-M3/I under surge conditions?
The SMBJ14D-M3/I has a maximum clamping voltage (VC) of 22.9 V at 26.2 A peak pulse current (IPPM) with a 10/1000 μs waveform. This value is guaranteed per Vishay's datasheet (Doc. #87606, Rev. 09-Jan-2024) and defines the upper voltage limit imposed on protected circuits during standardized surge events.
Is SMBJ14D-M3/I suitable for automotive applications?
Yes, SMBJ14D-M3/I is widely used in automotive body electronics due to its –55 °C to +150 °C operating junction temperature range, UL 497B recognition, MSL Level 1 reflow compatibility, and low leakage (<0.5 μA). It meets requirements for LIN bus, sensor interface, and lighting module protection per AEC-Q101 stress test guidelines.
Does SMBJ14D-M3/I have a bidirectional version?
Yes-the bidirectional counterpart is SMBJ14A-M3/I (with 'A' suffix instead of 'D'). Both share identical VWM (14 V), VC (22.9 V), and PPPM (600 W), but SMBJ14A-M3/I clamps symmetrically in both directions and lacks a cathode band. The 'D' suffix in SMBJ14D-M3/I explicitly denotes unidirectional functionality.
What is the thermal resistance of SMBJ14D-M3/I on standard PCB layout?
On the minimum recommended pad layout, SMBJ14D-M3/I has a typical junction-to-ambient thermal resistance (RθJA) of 125 °C/W. When mounted on a 5.0 mm × 5.0 mm copper pad, RθJA improves to 100 °C/W. Its junction-to-mount (RθJM) is 20 °C/W-key for estimating temperature rise under repetitive surge conditions.
How does the M3 suffix affect SMBJ14D-M3/I compliance and reliability?
The M3 suffix indicates halogen-free, RoHS-compliant construction, industrial-grade qualification, and compliance with JESD201 Class 2 whisker testing. It also confirms UL 94 V-0 flammability rating for the molding compound and matte tin plating per J-STD-002 solderability standards-ensuring long-term reliability in automated assembly and harsh environments.
SMBJ14D-M3/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:
- 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/I FAQ
1.How can I place an order for SMBJ14D-M3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ14D-M3/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 SMBJ14D-M3/I reliable?
The price and inventory of SMBJ14D-M3/I 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/I is usually 5 days.
3.What payment methods are accepted for SMBJ14D-M3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ14D-M3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ14D-M3/I?
SMBJ14D-M3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ14D-M3/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 SMBJ14D-M3/I?
For technical support, including SMBJ14D-M3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ14D-M3/I requirements.
6.How does Aetrix verify that SMBJ14D-M3/I is sourced from the original manufacturer or authorized distributors?
All SMBJ14D-M3/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 SMBJ14D-M3/I meets industry standards.
7.What is the process for return or replacement of SMBJ14D-M3/I?
All SMBJ14D-M3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ14D-M3/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 SMBJ14D-M3/I part is unused and in its original packaging.
Return procedure for SMBJ14D-M3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ14D-M3/I Tags
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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