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Vishay General Semiconductor - Diodes Division SMBJ14C-E3/52
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- Part No.:
- SMBJ14C-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ14C-E3/52.pdf
- Description:
- TVS DIODE 14VWM 25.8VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,648
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Product details
Overview
SMBJ14C-E3/52 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 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), commonly deployed on DC power rails and I/O lines in industrial sensor interfaces.
For engineers reviewing the SMBJ14C-E3/52 datasheet, SMBJ14C-E3/52 pinout, SMBJ14C-E3/52 application, or SMBJ14C-E3/52 equivalent, key selection criteria include verified clamping performance under 10/1000 µs surge, unidirectional polarity with cathode band marking, RoHS-compliant matte tin terminals, and compatibility with automated SMT placement on standard PCB pad layouts.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when transient voltage exceeds its breakdown threshold (VBR = 15.6–17.2 V at 1 mA), it rapidly switches to low-impedance conduction, diverting surge current away from downstream circuitry. Its glass-passivated junction ensures stable avalanche characteristics and long-term reliability under repetitive transients.
Thermal design is constrained by RθJA = 100 °C/W (typ.) and TJ(max) = 150 °C, requiring minimum 0.2" × 0.2" copper pads per terminal for rated 600 W pulse handling. The device meets J-STD-020 MSL Level 1 and supports lead-free reflow up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 14 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC rail margin for 12 V systems. |
| VBR (min/max) | 15.6 V / 17.2 V at 1 mA - Confirmed breakdown range ensures predictable turn-on without premature conduction. |
| VC @ IPPM | 23.2 V at 25.9 A - Clamping voltage during 600 W 10/1000 µs surge; limits stress on protected ICs to safe levels. |
| PPPM | 600 W - Peak pulse power rating under standardized waveform; validates surge immunity per IEC 61000-4-5 Level 3. |
| IFSM | 100 A - Non-repetitive forward surge current rating (8.3 ms half-sine); supports inrush and fault-current events. |
| TJ(max) | +150 °C - Maximum junction temperature; enables operation in high-ambient industrial environments with proper layout. |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 5.59 mm max length, compatible with automated pick-and-place. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads; polarity indicated by cathode band on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or lowest potential node; completes clamping path during reverse-biased surge events. |
| Cathode | High-side input terminal | Connected to protected line (e.g., 12 V rail or signal trace); marked by visible band; conducts surge current to anode. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Validated surge energy absorption capability for industrial-grade transient immunity without derating. |
| 23.2 V clamping voltage at 25.9 A | Ensures protected 12 V logic or analog circuits remain below absolute maximum ratings during ESD/EFT events. |
| Glass-passivated junction | Provides stable, repeatable avalanche behavior across temperature and lifetime, minimizing parameter drift. |
| MSL Level 1, 260 °C reflow compatible | Enables single-pass lead-free assembly without moisture-related popcorning or delamination risks. |
| RoHS-compliant, matte tin terminals | Guarantees solderability per J-STD-002 and whisker resistance per JESD 201 Class 2 for long-term field reliability. |
Applications
| Industrial Sensor Interface | Automotive Body Control Module |
|---|---|
|
Use Scenario: Protecting 12 V supply inputs and analog output lines of temperature/pressure sensors exposed to load dump and inductive switching noise. IC Role / Device Role: Unidirectional shunt TVS placed between VIN and GND, clamping transients before they reach sensor ASIC or ADC front-end. Use Value: Limits voltage excursion to ≤23.2 V during 600 W surges, preserving sensor accuracy and preventing latch-up in downstream signal conditioning circuitry. |
Use Scenario: Safeguarding LIN bus transceivers and microcontroller I/O pins against battery reverse connection and alternator load dump in BCM subassemblies. IC Role / Device Role: Primary overvoltage clamp on 12 V rail feeding LIN PHY and MCU power domains. Use Value: Withstands 100 A surge (8.3 ms) and clamps to 23.2 V, ensuring compliance with ISO 7637-2 Pulse 5a while maintaining system uptime. |
| Consumer Power Adapter Output | Telecom DC Distribution Board |
|
Use Scenario: Secondary-side overvoltage protection on 5–12 V USB-C PD adapter outputs subject to capacitor discharge and hot-plug transients. IC Role / Device Role: Final-stage TVS on regulated output rail, positioned after DC-DC converter and before connector. Use Value: Fast response (<1 ps) and low incremental surge resistance minimize overshoot, protecting connected devices from >20 V excursions. |
Use Scenario: Point-of-load protection for 48 V backplane distribution feeding PoE injectors and baseband processing units. IC Role / Device Role: Rail-level TVS on 48 V intermediate bus, coordinated with upstream fuses and downstream DC-DC converters. Use Value: 600 W rating handles telecom-grade lightning-induced surges (IEC 61000-4-5), while 150 °C TJ(max) supports enclosed chassis thermal profiles. |
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-E3/52 | Same VWM (14 V), identical VBR, VC, and PPPM; differs only in part suffix convention ('A' vs 'C' denotes same unidirectional variant). | No functional difference; both rated for identical surge waveforms and thermal conditions. | Select SMBJ14A-E3/52 if legacy BOM alignment or distributor stock preference dictates use of 'A' suffix designation. |
| SMAJ14A-E3/61 | Lower PPPM (400 W), higher VC (25.8 V at 17.3 A), smaller SMA package (DO-214AC) with reduced thermal mass and higher RθJA. | Not suitable for 600 W surge requirements; limited to lower-energy transients or space-constrained designs where 400 W suffices. | Choose SMAJ14A-E3/61 only when board area is critical and surge threat level is confirmed ≤400 W (e.g., consumer-grade USB ports). |
Compared with SMBJ14C-E3/52, SMBJ14A-E3/52 offers identical electrical and thermal performance in the same SMB package, while SMAJ14A-E3/61 trades 33 % lower surge capacity and higher clamping for 30 % smaller footprint-making SMBJ14C-E3/52 optimal for industrial-grade 600 W protection where reliability outweighs size constraints.
Availability
SMBJ14C-E3/52 is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive body control modules, and telecom DC distribution boards requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMBJ14C-E3/52 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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMBJ series is engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where robustness against load dump, ESD, and lightning-induced surges is mandatory.
FAQ
What is the standoff voltage rating of SMBJ14C-E3/52?
The SMBJ14C-E3/52 has a maximum reverse standoff voltage (VWM) of 14 V, meaning it remains non-conductive under normal 12–14 V DC operating conditions while providing precise clamping above that threshold. This value is confirmed in the Vishay SMBJ5.0A–SMBJ188A datasheet (Document Number: 88392, Rev. 09-Jan-2024) and aligns with its intended use in 12 V automotive and industrial power rails.
Does SMBJ14C-E3/52 meet automotive qualification standards?
The SMBJ14C-E3/52 is RoHS-compliant and commercial-grade; it is not AEC-Q101 qualified. For automotive applications requiring AEC-Q101, Vishay offers the SMBJ14AHExx variant (e.g., SMBJ14AHE3_B/H). The SMBJ14C-E3/52 itself is rated for -55 °C to +150 °C operating temperature and meets MSL Level 1, but lacks formal automotive qualification documentation.
What is the clamping voltage of SMBJ14C-E3/52 under a 600 W surge?
Under a 10/1000 µs 600 W surge, the SMBJ14C-E3/52 clamps at a maximum of 23.2 V when conducting 25.9 A (IPPM). This value is measured and guaranteed per the Vishay datasheet and defines the upper voltage limit imposed on protected circuitry during worst-case transient events.
Can SMBJ14C-E3/52 be used in bidirectional configurations?
No - SMBJ14C-E3/52 is a unidirectional TVS diode, identified by the "C" suffix and cathode band marking. Bidirectional variants use the "CA" suffix (e.g., SMBJ14CA). Using SMBJ14C-E3/52 in reverse-biased AC signal paths would result in forward conduction and failure; always verify polarity alignment in schematic and layout.
What PCB pad layout is required to achieve the full 600 W rating of SMBJ14C-E3/52?
To sustain the rated 600 W peak pulse power, SMBJ14C-E3/52 must be mounted on minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in the Vishay datasheet. Smaller pads increase thermal resistance and reduce surge capability; thermal relief traces or narrow connections further degrade performance and risk metallization lift-off.
SMBJ14C-E3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 14V
- Voltage - Breakdown (Min):
- 15.6V
- Voltage - Clamping (Max) @ Ipp:
- 25.8V
- Current - Peak Pulse (10/1000µs):
- 23.3A
- 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)
SMBJ14C-E3/52 FAQ
1.How can I place an order for SMBJ14C-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ14C-E3/52 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 SMBJ14C-E3/52 reliable?
The price and inventory of SMBJ14C-E3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ14C-E3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ14C-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ14C-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ14C-E3/52?
SMBJ14C-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ14C-E3/52 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 SMBJ14C-E3/52?
For technical support, including SMBJ14C-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ14C-E3/52 requirements.
6.How does Aetrix verify that SMBJ14C-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ14C-E3/52 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 SMBJ14C-E3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ14C-E3/52?
All SMBJ14C-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ14C-E3/52, 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 SMBJ14C-E3/52 part is unused and in its original packaging.
Return procedure for SMBJ14C-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ14C-E3/52 Tags
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