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Diodes Incorporated SMBJ14CAQ-13-F
- Part No.:
- SMBJ14CAQ-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ14CAQ-13-F.pdf
- Description:
- TVS DIODE 14VWM 23.2VC SMB
- Quantity:
- Payment:
- Shipping:
Inventory:2,720
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Product details
Overview
SMBJ14CAQ-13-F from Diodes Incorporated is a bi-directional automotive-grade transient voltage suppressor (TVS) diode in SMB package, rated for 600W peak pulse power, 14V reverse standoff voltage (VRWM), and 23.2V max clamping voltage (VC) at 25.8A peak pulse current. It protects CAN, LIN, and sensor interfaces in 12V automotive systems against ISO7637-2 Pulse 1/2a/3a/3b transients and ISO10605 ESD events.
For engineers reviewing the SMBJ14CAQ-13-F datasheet, SMBJ14CAQ-13-F pinout, SMBJ14CAQ-13-F application, or SMBJ14CAQ-13-F equivalent, key selection criteria include bi-directional clamping capability, AEC-Q101 qualification, IATF 16949 manufacturing, and compliance with ISO7637-2 Pulse 3a (−220V) and ISO10605 (±30kV contact discharge).
Technical Context
This bi-directional TVS operates symmetrically across both polarities, enabling protection of differential or AC-coupled signal lines without polarity constraints. Its 14V VRWM ensures compatibility with 12V nominal automotive battery systems while maintaining margin above typical load dump thresholds.
Clamping occurs at 23.2V under 10×1000μs waveform per Figure 4, limiting voltage stress on downstream components during ISO7637-2 Pulse 2a (+112V) and Pulse 3b (+150V). The device sustains 100A non-repetitive forward surge (IFSM) and exhibits ≤0.5μA reverse leakage at VRWM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600W - withstands ISO7637-2 Pulse 1 (−150V) and Pulse 3a (−220V) without failure |
| Reverse Standoff Voltage (VRWM) | 14.0V - blocks normal 12V system operation while triggering only during overvoltage events |
| Max Clamping Voltage (VC) | 23.2V @ IPP = 25.8A - limits protected circuit voltage to safe level during 10×1000μs transients |
| Breakdown Voltage (VBR) | 15.6–17.2V @ IT = 1.0mA - defines sharp avalanche onset for predictable clamping threshold |
| Reverse Leakage (IR) | ≤0.5μA @ VRWM - negligible standby current draw in 12V automotive electronics |
| Operating Temperature | −55°C to +175°C - supports under-hood placement in engine control units and body modules |
Pinout & Package
Package: SMB surface-mount plastic package (UL 94V-0), 3.30–3.94mm width, 5.00–5.59mm length, 2.00–2.50mm height; moisture sensitivity level 1 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal (bi-directional) | Accepts surge current from either polarity; no cathode band marking on bi-directional variant |
| Cathode | Current exit terminal (bi-directional) | Completes low-impedance path to ground or return rail during clamping; symmetric to Anode |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive use with temperature cycling, HTRB, and ESD testing per AEC standard |
| IATF 16949 certified manufacturing | Ensures consistent lot-to-lot reliability and change control traceability for Tier 1 suppliers |
| ISO10605 ±30kV ESD rating | Protects infotainment and ADAS interfaces against human-body-model discharges without degradation |
| Lead-free, halogen-free "Green" construction | Complies with RoHS 3 (2015/863/EU) and automotive environmental mandates |
Applications
| Infotainment Head Unit Interface | Body Control Module (BCM) LIN Bus |
|---|---|
Use Scenario: Protecting USB-C, HDMI, or audio differential pairs in center-stack displays exposed to cable-induced surges and ESD. IC Role / Device Role / Timing Role: Bi-directional TVS placed at connector entry point to clamp fast-rising transients before reaching PHY ICs. Use Value: Prevents latch-up or permanent damage to high-speed interface ICs during ±30kV contact discharge per ISO10605. | Use Scenario: Shielding LIN transceivers in door modules and seat controllers from battery line coupling and load dump spikes. IC Role / Device Role / Timing Role: Parallel-connected TVS on LIN bus line to limit voltage excursion during ISO7637-2 Pulse 3b (+150V). Use Value: Maintains LIN communication integrity by holding bus voltage ≤23.2V during 10×1000μs transients. |
| Engine Control Unit (ECU) Sensor Inputs | Advanced Driver Assistance Systems (ADAS) Camera Link |
Use Scenario: Safeguarding analog pressure, temperature, and throttle position sensor signals routed near ignition systems. IC Role / Device Role / Timing Role: Low-capacitance TVS on sensor signal traces to suppress coupled noise from ISO7637-2 Pulse 2a (+112V). Use Value: Enables stable sensor readings by clamping induced surges within 1ns response time without signal distortion. | Use Scenario: Protecting GMSL or FPD-Link III camera data lines in rearview and surround-view systems. IC Role / Device Role / Timing Role: Bi-directional clamping element on differential video pair to handle bidirectional ESD and supply-line transients. Use Value: Preserves pixel integrity and frame sync by limiting differential voltage swing to <46.4V (2×VC) during common-mode surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bi-directional automotive TVS applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ14C-13-F | Non-AEC-Q101; same electrical specs but lacks automotive qualification and PPAP support | Not suitable for production automotive ECUs; acceptable for industrial or consumer prototypes | Select only if AEC-Q101 and IATF 16949 traceability are not required |
| TPSMD14C | Same VRWM and VC, but higher IR (1.0μA vs. 0.5μA); RoHS-compliant but not explicitly AEC-Q101 certified | Limited documentation for ISO7637-2 Pulse 3a validation; less robust change control for Tier 1 programs | Use where cost sensitivity outweighs full automotive compliance requirements |
Compared with SMBJ14C-13-F and TPSMD14C, SMBJ14CAQ-13-F provides verified AEC-Q101 qualification, IATF 16949 manufacturing, and documented ISO7637-2 Pulse 3a (−220V) immunity-critical for safety-critical vehicle networks.
Availability
SMBJ14CAQ-13-F is available at Aetrix Electronics and suitable for automotive infotainment systems, body control modules, engine control units, and ADAS camera links requiring stable component supply across multi-year vehicle production cycles.
Supply support for SMBJ14CAQ-13-F 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
Diodes Incorporated is a global semiconductor company specializing in discrete, analog, and mixed-signal solutions, with design and manufacturing operations across Asia, Europe, and the Americas.
The SMBJ(AQ) series targets automotive electronics requiring robust transient suppression, delivering AEC-Q101-qualified TVS diodes optimized for ISO7637-2 and ISO10605 compliance in harsh vehicular environments.
FAQ
What does the 'AQ' suffix signify in SMBJ14CAQ-13-F?
The 'AQ' suffix denotes AEC-Q101 qualification, PPAP capability, and manufacture in IATF 16949-certified facilities. It confirms full automotive-grade reliability testing-including temperature cycling, highly accelerated life testing (HALT), and ESD validation per ISO10605-distinguishing it from commercial-grade variants like SMBJ14C-13-F.
How does SMBJ14CAQ-13-F differ from uni-directional SMBJ14AQ-13-F?
SMBJ14CAQ-13-F is bi-directional with symmetrical clamping for AC or differential signals, while SMBJ14AQ-13-F is uni-directional with cathode band marking and clamps only in reverse bias. The bi-directional version supports LIN, CAN FD, and sensor interfaces where polarity reversal or common-mode transients occur, whereas the uni-directional type suits DC power rail protection.
Can SMBJ14CAQ-13-F be used in 24V commercial vehicle systems?
No-its 14V VRWM is designed for 12V nominal automotive systems. In 24V applications, sustained operating voltage exceeds VRWM, causing excessive leakage and premature thermal failure. For 24V systems, select SMBJ26CAQ-13-F (26V VRWM) or higher to maintain ≥20% margin above nominal battery voltage.
What is the maximum recommended PCB trace length between SMBJ14CAQ-13-F and protected IC inputs?
Trace length should be ≤5mm from TVS terminals to protected IC pins to minimize inductance-induced voltage overshoot. Longer traces add parasitic inductance that degrades clamping performance during fast transients like ISO10605 ESD, potentially exceeding the IC's absolute maximum ratings despite the TVS's 23.2V VC rating.
SMBJ14CAQ-13-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-214AA, SMB
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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):
- 25.8A
- 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:
- SMB
SMBJ14CAQ-13-F FAQ
1.How can I place an order for SMBJ14CAQ-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ14CAQ-13-F 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 SMBJ14CAQ-13-F reliable?
The price and inventory of SMBJ14CAQ-13-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ14CAQ-13-F is usually 5 days.
3.What payment methods are accepted for SMBJ14CAQ-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ14CAQ-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ14CAQ-13-F?
SMBJ14CAQ-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ14CAQ-13-F 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 SMBJ14CAQ-13-F?
For technical support, including SMBJ14CAQ-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ14CAQ-13-F requirements.
6.How does Aetrix verify that SMBJ14CAQ-13-F is sourced from the original manufacturer or authorized distributors?
All SMBJ14CAQ-13-F 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 SMBJ14CAQ-13-F meets industry standards.
7.What is the process for return or replacement of SMBJ14CAQ-13-F?
All SMBJ14CAQ-13-F units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ14CAQ-13-F, 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 SMBJ14CAQ-13-F part is unused and in its original packaging.
Return procedure for SMBJ14CAQ-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ14CAQ-13-F Tags
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