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Vishay General Semiconductor - Diodes Division SMBJ14CAHE3_A/I
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- Part No.:
- SMBJ14CAHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ14CAHE3_A/I.pdf
- Description:
- TVS DIODE 14VWM 23.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,127
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Product details
Overview
SMBJ14CAHE3_A/I 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 or power lines. It features 14 V standoff voltage (VWM), 15.6–17.2 V breakdown range (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), used to protect MOSFETs, ICs, and sensor signal lines in industrial and telecom equipment.
For engineers reviewing the SMBJ14CAHE3_A/I datasheet, SMBJ14CAHE3_A/I pinout, SMBJ14CAHE3_A/I application, or SMBJ14CAHE3_A/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), and compatibility with automated SMT placement on standard PCB pad layouts.
Technical Context
This TVS diode operates symmetrically in both directions, enabling protection of AC-coupled or differential signal paths without polarity constraints. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at VWM), while the 10/1000 µs surge rating reflects standardized lightning and switching transient immunity per ANSI/IEEE C62.35.
The device is rated for -55 °C to +150 °C operating junction temperature and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. Its 20 °C/W junction-to-lead thermal resistance supports localized heat dissipation during repetitive surge events when mounted on recommended 5.0 mm × 5.0 mm copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 14 V - Maximum continuous reverse voltage before significant conduction begins; defines safe operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 15.6–17.2 V at 1 mA - Confirmed minimum/maximum voltage at which device enters avalanche breakdown; ensures predictable turn-on behavior. |
| VC (Clamping Voltage) | 23.2 V at IPPM = 25.9 A - Peak voltage seen across protected circuit during 10/1000 µs transient; directly limits stress on downstream components. |
| PPPM (Peak Pulse Power) | 600 W - Surge energy handling capacity under standardized 10/1000 µs waveform; validates robustness against IEC 61000-4-5 level 4 surges. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on standard PCB layout; determines allowable power dissipation at ambient temperature. |
| TJ max. | +150 °C - Maximum junction temperature; sets upper limit for thermal design margin in high-reliability applications. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing; enables use in under-hood and infotainment systems. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); matte tin-plated leads compliant with J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; symmetrical with cathode in bidirectional operation | Enables identical clamping response for positive or negative transients; eliminates need for orientation-aware layout. |
| Cathode | Current exit terminal in forward bias; electrically equivalent to anode in bidirectional mode | Both terminals function identically under reverse or forward surge conditions; no band marking required. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses (e.g., RS-485), or ungrounded power rails without polarity concerns. |
| 600 W peak pulse power (10/1000 µs) | Withstands high-energy transients common in industrial motor drives and telecom line interfaces without degradation. |
| AEC-Q101 qualification | Validates long-term reliability under automotive thermal, mechanical, and electrical stress profiles-critical for ADAS and body control modules. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (<1 ns response), improving protection fidelity for sensitive analog front-ends. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking; simplifies manufacturing for high-volume SMT assembly. |
Applications
| Industrial Motor Drives | Automotive Sensor Interfaces |
|---|---|
Use Scenario: Protection of gate drivers and feedback signal lines against inductive kickback from BLDC motor switching. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across gate-source or supply-rail nodes to limit transient excursions. Use Value: Prevents MOSFET gate oxide rupture and op-amp input stage damage during 600 V/µs edge rates typical in 48 V traction inverters. |
Use Scenario: Shielding LIN bus transceivers and MEMS pressure sensor outputs from battery load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Low-capacitance (≈200 pF) shunt protector on bidirectional data lines with minimal signal distortion. Use Value: Maintains signal integrity up to 20 kbps while suppressing ±100 V/50 ms transients per automotive EMC requirements. |
| Telecom Power Feeds | Consumer USB-C PD Ports |
Use Scenario: Safeguarding PoE (Power over Ethernet) PHY interfaces and DC-DC controllers from lightning-induced surges on 48 V lines. IC Role / Device Role / Timing Role: Primary-level TVS on secondary-side DC output rails upstream of LDOs and PMICs. Use Value: Clamps 10/1000 µs surges to ≤23.2 V, ensuring downstream 3.3 V/5 V logic remains within absolute maximum ratings. |
Use Scenario: Overvoltage protection on VBUS lines in USB-C receptacles exposed to accidental 20 V adapter misconnection or hot-swap spikes. IC Role / Device Role / Timing Role: Fast-response shunt element between VBUS and GND, coordinated with eFuse timing. Use Value: Limits fault voltage to 23.2 V within <1 ns, preventing damage to USB PD controller and port partner negotiation circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ14CA-E3/52 | Commercial-grade RoHS-compliant version; lacks AEC-Q101 qualification and halogen-free certification. | Approved for industrial and consumer applications but not automotive production. | Select when cost sensitivity outweighs automotive qualification requirements and thermal cycling beyond 125 °C is not expected. |
| SAC14 | Lower 600 W PPPM rating retained, but uses smaller SOD-123FL package (lower RθJA ≈ 150 °C/W); VBR tighter (15.8–16.8 V). | Better suited for space-constrained portable electronics; less effective in sustained surge environments due to higher thermal resistance. | Choose for handheld devices where board area is critical and single-event surge exposure dominates over repetitive duty cycles. |
Compared with SMBJ14CAHE3_A/I, the E3/52 variant offers identical electrical specs but reduced reliability assurance for automotive use, while SAC14 trades package size and thermal performance for compactness-making SMBJ14CAHE3_A/I optimal for high-reliability, thermally demanding deployments.
Availability
SMBJ14CAHE3_A/I is available at Aetrix Electronics and suitable for industrial motor drives, automotive sensor interfaces, telecom power feeds, and consumer USB-C PD ports requiring stable component supply with AEC-Q101 validation and full traceability.
Supply support for SMBJ14CAHE3_A/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, rectifiers, and protection devices with emphasis on high-reliability, high-power, and automotive-qualified solutions.
The SMBJ series was engineered specifically for robust transient suppression in harsh environments-targeting industrial automation, automotive electronics, and telecom infrastructure where failure tolerance and long-term stability are non-negotiable.
FAQ
What is the clamping voltage of SMBJ14CAHE3_A/I at its rated peak pulse current?
The SMBJ14CAHE3_A/I has a maximum clamping voltage (VC) of 23.2 V at its specified peak pulse current (IPPM) of 25.9 A under the 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuits during standardized surge events. The SMBJ14CAHE3_A/I maintains this clamping performance across its qualified temperature range (-55 °C to +150 °C).
Is SMBJ14CAHE3_A/I suitable for automotive applications?
Yes, SMBJ14CAHE3_A/I is AEC-Q101 qualified, meaning it has passed rigorous stress tests including temperature cycling, highly accelerated life testing (HALT), and ESD verification per automotive standards. Its construction-glass-passivated junction, matte tin leads, and MSL Level 1 rating-supports under-hood and cabin deployment. The SMBJ14CAHE3_A/I is explicitly designated for automotive use via the "HE3" suffix and revision code "A/I".
How does the bidirectional configuration of SMBJ14CAHE3_A/I affect PCB layout?
The SMBJ14CAHE3_A/I has no polarity marking and functions identically in both directions, eliminating orientation constraints during placement. This allows simplified layout for AC-coupled lines, differential buses (e.g., CAN, RS-485), or floating power domains. Unlike unidirectional TVS diodes, the SMBJ14CAHE3_A/I requires no cathode band alignment, reducing assembly errors and enabling automated optical inspection (AOI) agnosticism.
What is the thermal resistance of SMBJ14CAHE3_A/I, and how does it impact power derating?
SMBJ14CAHE3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on the recommended 5.0 mm × 5.0 mm copper pads per terminal. At 25 °C ambient, its 5.0 W steady-state power dissipation (PD) derates linearly above 25 °C-reducing to zero at 75 °C ambient. This RθJA value directly informs heatsinking decisions and maximum allowable surge repetition rate in thermally constrained enclosures.
Does SMBJ14CAHE3_A/I meet RoHS and halogen-free requirements?
Yes, SMBJ14CAHE3_A/I is RoHS-compliant and halogen-free, as confirmed by the "HM3"-derived suffix structure and Vishay's material categorization documentation (www.vishay.com/doc?99912). The "HE3" base denotes RoHS compliance and AEC-Q101 qualification; the "HM3" variant (e.g., SMBJ14CAHM3_A/I) adds halogen-free status. Both meet JESD 201 Class 2 whisker resistance and UL 94 V-0 flammability standards.
SMBJ14CAHE3_A/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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMBJ14CAHE3_A/I FAQ
1.How can I place an order for SMBJ14CAHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ14CAHE3_A/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 SMBJ14CAHE3_A/I reliable?
The price and inventory of SMBJ14CAHE3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ14CAHE3_A/I is usually 5 days.
3.What payment methods are accepted for SMBJ14CAHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ14CAHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ14CAHE3_A/I?
SMBJ14CAHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ14CAHE3_A/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 SMBJ14CAHE3_A/I?
For technical support, including SMBJ14CAHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ14CAHE3_A/I requirements.
6.How does Aetrix verify that SMBJ14CAHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SMBJ14CAHE3_A/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 SMBJ14CAHE3_A/I meets industry standards.
7.What is the process for return or replacement of SMBJ14CAHE3_A/I?
All SMBJ14CAHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ14CAHE3_A/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 SMBJ14CAHE3_A/I part is unused and in its original packaging.
Return procedure for SMBJ14CAHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ14CAHE3_A/I Tags
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DESD3V3E1BL-7B
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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