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Vishay General Semiconductor - Diodes Division SMBJ14CA-M3/52
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- Part No.:
- SMBJ14CA-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ14CA-M3/52.pdf
- Description:
- TVS DIODE 14VWM 23.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,561
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Product details
Overview
SMBJ14CA-M3/52 from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on signal and power lines. It features a 14 V standoff voltage (VWM), 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), making it suitable for protecting MOSFETs, ICs, and sensor signal lines in industrial and telecom equipment.
For engineers reviewing the SMBJ14CA-M3/52 datasheet, SMBJ14CA-M3/52 pinout, SMBJ14CA-M3/52 application, or SMBJ14CA-M3/52 equivalent, key selection considerations include bidirectional surge protection capability, low clamping ratio (VC/VWM = 1.66), halogen-free RoHS-compliant construction (M3 suffix), and compatibility with automated SMT placement on PCBs with standard 0.2" × 0.2" copper pads.
Technical Context
This device operates as a voltage-clamping protector using an avalanche breakdown mechanism, with symmetrical bidirectional conduction enabling suppression of both positive and negative transients without polarity sensitivity. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at VWM), while MSL Level 1 rating confirms suitability for lead-free reflow up to 260 °C.
The SMBJ14CA-M3/52 delivers 600 W peak pulse power handling under standardized 10/1000 µs waveform conditions, with thermal resistance of 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead). It supports operating junction temperatures from –55 °C to +150 °C and meets AEC-Q101 qualification when ordered with HE3/HM3 suffixes - though the M3/52 variant is commercial-grade.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 14 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR min / max | 15.6 V / 17.2 V at 1.0 mA test current - Confirmed breakdown voltage range ensuring reliable turn-on during overvoltage events. |
| VC @ IPPM | 23.2 V at 25.9 A - Clamped voltage during 600 W transient; determines maximum stress imposed on protected downstream circuitry. |
| PPPM | 600 W - Peak pulse power handling per 10/1000 µs waveform; defines transient energy absorption capacity. |
| IPPM | 25.9 A - Corresponding peak pulse current at VC; used to size PCB trace widths and verify layout survivability. |
| TJ max | +150 °C - Maximum junction temperature; sets thermal derating limits for sustained operation near power dissipation limits. |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 0.205" × 0.130" body and matte tin-plated leads compliant with J-STD-002 solderability. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking; terminals are symmetric anode/cathode pairs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (dual) | Bidirectional terminal pair | Both ends function identically; connects across protected line (e.g., between signal and ground or differential pair) without orientation dependency. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables robust protection against high-energy transients such as lightning-induced surges or inductive switching spikes in industrial controls. |
| Low clamping voltage ratio (VC/VWM = 1.66) | Minimizes voltage overshoot during clamping, reducing risk of damage to sensitive 3.3 V or 5 V logic interfaces. |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets environmental compliance requirements for consumer, telecom, and industrial end-equipment without compromising surge performance. |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free SMT assembly processes without moisture sensitivity concerns or baking requirements. |
| Glass-passivated junction | Ensures stable, repeatable breakdown characteristics over temperature and lifetime, critical for long-term reliability in harsh environments. |
Applications
| Industrial Motor Control | Automotive Sensor Interface |
|---|---|
|
Use Scenario: Protection of gate drivers and feedback signal lines in variable-frequency drives subjected to inductive kickback from AC motor windings. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across isolated gate drive transformer secondary or analog feedback path. Use Value: Limits transient excursions to ≤23.2 V, preventing latch-up or permanent damage to 15 V-rated op-amps and isolated gate drivers. |
Use Scenario: ESD and load-dump protection on LIN bus or analog sensor outputs (e.g., pressure, temperature) in engine control modules. IC Role / Device Role / Timing Role: Line-to-ground TVS on bidirectional communication or analog sensing node. Use Value: Absorbs 600 W pulses without degradation, maintaining signal integrity during ISO 7637-2 Pulse 1/2/5a events in automotive environments. |
| Telecom Power Feeding | Consumer USB-C Port Protection |
|
Use Scenario: Surge protection on -48 V DC power feed lines in remote radio units and base station backhaul equipment. IC Role / Device Role / Timing Role: Bidirectional clamp between power rail and chassis ground to suppress common-mode transients. Use Value: Withstands repetitive 10/1000 µs surges up to 600 W at 0.01% duty cycle, extending service life of DC-DC converters and monitoring ICs. |
Use Scenario: Secondary-level transient suppression on USB-C CC and VCONN lines exposed to human-body-model (HBM) ESD and cable coupling events. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed adjacent to connector to limit voltage before entering USB PD controller. Use Value: Clamps sub-100 ns ESD events to <23.2 V within nanoseconds, preserving USB enumeration and preventing false disconnects. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ14CA-E3/52 | Same electrical specs; RoHS-compliant but not halogen-free (E3 vs. M3). | Preferred where halogen-free requirement is absent; identical thermal and surge performance. | Select E3/52 for cost-sensitive commercial designs without halogen restrictions. |
| SMAJ14CA-M3 | Lower peak pulse power (400 W), smaller SMA package (DO-214AC), higher RθJA (140 °C/W). | Suitable only for lower-energy transients; requires tighter thermal management due to reduced power handling. | Choose SMAJ14CA-M3 only if board space is constrained and 400 W rating suffices. |
Compared with SMBJ14CA-M3/52, the E3/52 offers identical protection performance with standard RoHS compliance, while the SMAJ14CA-M3 trades 33 % lower pulse power and inferior thermal resistance for a 30 % smaller footprint - requiring careful validation in thermally demanding or high-surge environments.
Availability
SMBJ14CA-M3/52 is available at Aetrix Electronics and suitable for industrial motor control, telecom power feeding, automotive sensor interface, and consumer USB-C port protection requiring stable component supply and halogen-free compliance.
Supply support for SMBJ14CA-M3/52 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 reliability, efficiency, and application-specific optimization.
The SMBJ series was developed for high-power, surface-mount transient suppression in space-constrained industrial and automotive systems, balancing robust surge handling with automated assembly compatibility and long-term stability.
FAQ
What is the clamping voltage of SMBJ14CA-M3/52 under maximum rated surge current?
The SMBJ14CA-M3/52 has a maximum clamping voltage (VC) of 23.2 V when subjected to its rated peak pulse current of 25.9 A (10/1000 µs waveform). This value is measured per JEDEC standards and defines the upper voltage limit imposed on protected circuitry during transient events. The SMBJ14CA-M3/52 maintains this clamping performance across its specified operating temperature range of –55 °C to +150 °C.
Is SMBJ14CA-M3/52 suitable for automotive applications requiring AEC-Q101 qualification?
No - SMBJ14CA-M3/52 is a commercial-grade part with halogen-free RoHS compliance (M3 suffix) but lacks AEC-Q101 qualification. For automotive use, Vishay offers the SMBJ14CA-HM3_X variant (e.g., SMBJ14CA-HM3_A), which carries the HM3 suffix and explicit AEC-Q101 qualification. The SMBJ14CA-M3/52 remains appropriate for industrial, telecom, and consumer applications where automotive-grade reliability is not mandated.
How does the bidirectional design of SMBJ14CA-M3/52 affect its placement on the PCB?
The SMBJ14CA-M3/52 has no polarity marking and functions identically in either orientation, allowing flexible placement across differential lines or line-to-ground configurations without concern for anode/cathode alignment. This simplifies layout and eliminates orientation-related assembly errors. The SMBJ14CA-M3/52 must be mounted on minimum recommended 0.2" × 0.2" copper pads per terminal to ensure full 600 W pulse power capability and thermal dissipation.
What is the maximum reverse leakage current of SMBJ14CA-M3/52 at its standoff voltage?
At its 14 V standoff voltage (VWM), the SMBJ14CA-M3/52 exhibits a maximum reverse leakage current (ID) of 1.0 µA at 25 °C. This low leakage ensures minimal power loss and signal interference in always-on or battery-powered circuits. Leakage increases with temperature but remains below 10 µA up to +125 °C, as confirmed by Vishay's thermal derating curves in Document 88392.
Can SMBJ14CA-M3/52 replace SMBJ14A-M3/52 in a design?
No - SMBJ14CA-M3/52 is bidirectional, while SMBJ14A-M3/52 is unidirectional and includes a cathode band for polarity-sensitive placement. Substituting them requires verifying circuit topology: bidirectional use (e.g., AC lines, differential buses) mandates SMBJ14CA-M3/52, whereas unidirectional DC rails may require SMBJ14A-M3/52 for optimal forward conduction behavior. The SMBJ14CA-M3/52 cannot serve as a drop-in replacement without layout and functional review.
SMBJ14CA-M3/52 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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 14V
- Voltage - Breakdown (Min):
- 15.5V
- Voltage - Clamping (Max) @ Ipp:
- 23.2V
- Current - Peak Pulse (10/1000µs):
- 25.9A
- 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)
SMBJ14CA-M3/52 FAQ
1.How can I place an order for SMBJ14CA-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ14CA-M3/52 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 SMBJ14CA-M3/52 reliable?
The price and inventory of SMBJ14CA-M3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ14CA-M3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ14CA-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ14CA-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ14CA-M3/52?
SMBJ14CA-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ14CA-M3/52 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 SMBJ14CA-M3/52?
For technical support, including SMBJ14CA-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ14CA-M3/52 requirements.
6.How does Aetrix verify that SMBJ14CA-M3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ14CA-M3/52 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 SMBJ14CA-M3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ14CA-M3/52?
All SMBJ14CA-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ14CA-M3/52, 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 SMBJ14CA-M3/52 part is unused and in its original packaging.
Return procedure for SMBJ14CA-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ14CA-M3/52 Tags
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