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Diodes Incorporated SMCJ14AQ-13-F
- Part No.:
- SMCJ14AQ-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ14AQ-13-F.pdf
- Description:
- TVS DIODE 14VWM 23.2VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:153
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Product details
Overview
SMCJ14AQ-13-F from Diodes Incorporated is a unidirectional 1,500W automotive transient voltage suppressor (TVS) diode with 14.0V reverse standoff voltage (VRWM), 15.6V minimum breakdown voltage (VBR), and 23.2V maximum clamping voltage (VC) at 64.7A peak pulse current (IPP). It protects CAN, LIN, and power-line circuits in engine control units and body electronics against ISO7637-2 Pulse 1/2a/3a/3b surges and ISO10605 ESD events.
For engineers reviewing the SMCJ14AQ-13-F datasheet, SMCJ14AQ-13-F pinout, SMCJ14AQ-13-F application, or SMCJ14AQ-13-F equivalent, this device is selected for AEC-Q101-compliant surge protection where fast response time (<1 ns), low clamping ratio (VC/VRWM ≈ 1.66), and IATF 16949-manufactured consistency are critical in 12V automotive subsystems.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector: under normal conditions it presents <5 µA leakage at 14.0V VRWM; during transients, it avalanches at ≥15.6V to clamp energy within 1 ns, limiting downstream voltage to ≤23.2V at 64.7A (10/1000 µs waveform). Its glass-passivated junction ensures stable VBR tolerance (±5%) and long-term reliability under thermal cycling.
Designed for automotive-grade robustness, it meets ISO7637-2 Pulse 1 (−100V), Pulse 2a (+50V), Pulse 3a (−150V), and Pulse 3b (+100V), and passes ISO10605 ESD testing at ±30kV (air/contact discharge). Its SMC package supports 200A non-repetitive forward surge current (IFSM) and operates from −55°C to +150°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500W - sustains single 10/1000 µs surges without failure in engine bay environments |
| Reverse Standoff Voltage (VRWM) | 14.0V - blocks normal 12V system operation while allowing margin for load dump overshoot |
| Breakdown Voltage (VBR) | 15.6–17.2V @ 1.0mA - precise avalanche initiation threshold for predictable clamping onset |
| Clamping Voltage (VC) | 23.2V @ 64.7A - limits protected IC input voltage below 24V rail tolerance during worst-case transients |
| Leakage Current (IR) | ≤5.0 µA @ 14.0V - negligible standby power loss in always-on vehicle modules |
| Junction Temperature Range | −55°C to +150°C - qualified for under-hood placement in modern ICE and EV powertrain ECUs |
| AEC-Q101 Qualified | Yes - validated for automotive use with PPAP capability and IATF 16949 manufacturing control |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, molded plastic UL 94V-0 housing; cathode band indicates polarity; weight ≈ 0.21 g; moisture sensitivity level 1 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference node | Connected to ground or low-impedance return path to enable shunt clamping of positive transients |
| Cathode | Protected line input | Connected to supply rail (e.g., 12V battery line) to divert surge current to ground when voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| 1,500W peak pulse rating | Handles ISO7637-2 Pulse 1 (−100V/50Ω) without degradation in 12V systems |
| Glass-passivated die construction | Ensures stable VBR over 1,000+ thermal cycles and eliminates passivation-related drift |
| Fast response time (<1 ns) | Clamps before sensitive CAN transceivers or microcontrollers experience overvoltage stress |
| AEC-Q101 qualification & PPAP support | Enables direct integration into Tier-1 automotive BOMs with full change control documentation |
| Lead-free, halogen-free "Green" construction | Meets RoHS 3 (2015/863/EU) and automotive OEM substance restrictions (Br+Cl <1500 ppm) |
Applications
| Engine Control Unit (ECU) Power Input | CAN Bus Physical Layer Protection |
|---|---|
|
Use Scenario: 12V battery feed to MCU power supply in gasoline/diesel engine management systems exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Shunt TVS diode placed upstream of DC-DC converter input to clamp transients before regulation. Use Value: Limits voltage to ≤23.2V during ISO7637-2 Pulse 1 (−100V), preventing damage to 28V-rated input capacitors and LDOs. |
Use Scenario: Protection of high-speed CAN FD transceivers (e.g., TJA1044) on vehicle chassis networks. IC Role / Device Role / Timing Role: Unidirectional clamping element on CAN_H line referenced to ground, suppressing ESD and coupled noise. Use Value: Clamps ISO10605 ±30kV discharges within 1 ns, preserving signal integrity and avoiding bus-off states. |
| Body Control Module (BCM) LIN Bus | Automotive Lighting Power Supply |
|
Use Scenario: LIN slave node (e.g., door module) powered from 12V via local LDO, subject to cable harness coupling. IC Role / Device Role / Timing Role: Low-leakage (≤5 µA) TVS on LIN supply rail to avoid false wake-up while enabling surge suppression. Use Value: Maintains <5 µA standby current at 14.0V VRWM while clamping ISO7637-2 Pulse 3b (+100V) to safe levels. |
Use Scenario: LED headlamp driver input subjected to load dump and jump-start surges in 12V architectures. IC Role / Device Role / Timing Role: Primary overvoltage clamp ahead of buck controller IC (e.g., LM5164) to prevent input overvoltage shutdown. Use Value: Absorbs 1500W peak energy without failure, ensuring continuous illumination during transient events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC14-13-F (Diodes Inc.) | Lower 400W rating; 14V VRWM; SOD-123FL package; 10.5V VC @ 35A | Targeted for space-constrained infotainment USB ports, not under-hood surge duty | Select when board area is critical and peak surge energy ≤400W; not suitable for ISO7637-2 Pulse 1 compliance. |
| SMBJ14A (ON Semiconductor) | Same 14V VRWM, but 600W rating; SMB package; 23.2V VC @ 26A; AEC-Q101 qualified | Limited to lower-energy transients (e.g., ISO7637-2 Pulse 3b only); smaller thermal mass | Choose for cost-sensitive cabin modules where 600W suffices and SMC footprint is unavailable. |
Compared with SAC14-13-F and SMBJ14A, SMCJ14AQ-13-F delivers 2.5× higher peak power handling and superior thermal robustness in SMC packaging-essential for under-hood ECU protection where sustained surge energy and ambient temperature exceed 125°C.
Availability
SMCJ14AQ-13-F is available at Aetrix Electronics and suitable for automotive engine control units, CAN/LIN network nodes, body electronics modules, and LED lighting drivers requiring stable component supply across extended product lifecycles.
Supply support for SMCJ14AQ-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 manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability components for automotive, industrial, and computing markets with ISO/TS 16949 and IATF 16949 certified facilities.
This device belongs to Diodes' SMCJ-AQ automotive TVS series, engineered specifically for AEC-Q101 compliance and robust transient suppression in 12V/24V vehicle electrical systems per ISO7637-2 and ISO10605.
FAQ
Is SMCJ14AQ-13-F bidirectional or unidirectional?
SMCJ14AQ-13-F is unidirectional. The absence of the "C" suffix (e.g., SMCJ14CAQ-13-F) confirms its single-polarity configuration. It conducts only during reverse overvoltage events, with cathode connected to the protected line and anode to ground-ideal for DC supply rail protection where polarity is fixed.
What is the maximum clamping voltage at rated peak pulse current?
The maximum clamping voltage (VC) is 23.2V at 64.7A peak pulse current (IPP), measured using the standard 10/1000 µs double-exponential waveform. This value is guaranteed across the full operating temperature range (−55°C to +150°C) and defines the upper voltage limit imposed on protected circuitry during surge events.
Does this TVS diode require a heatsink in typical automotive applications?
No external heatsink is required. With a steady-state power dissipation of 5.0W at TL = +75°C and thermal resistance from junction-to-lead (RθJL) optimized by the SMC package, it self-dissipates surge energy without auxiliary cooling in PCB-mounted configurations meeting recommended pad layout (X1=9.40 mm, Y=3.30 mm per Diodes' outline).
How does SMCJ14AQ-13-F differ from commercial-grade SMCJ14A?
SMCJ14AQ-13-F includes AEC-Q101 qualification, PPAP documentation support, and manufacturing in IATF 16949-certified facilities-unlike commercial SMCJ14A. It also features tighter VBR tolerance (±5% vs. ±10%), enhanced ESD robustness (±30kV), and extended temperature validation (−55°C to +150°C vs. −65°C to +150°C), making it mandatory for Tier-1 automotive designs.
SMCJ14AQ-13-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-214AB, SMC
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 14V
- Voltage - Breakdown (Min):
- 15.6V
- Voltage - Clamping (Max) @ Ipp:
- 23.2V
- Current - Peak Pulse (10/1000µs):
- 64.7A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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:
- SMC
SMCJ14AQ-13-F FAQ
1.How can I place an order for SMCJ14AQ-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ14AQ-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 SMCJ14AQ-13-F reliable?
The price and inventory of SMCJ14AQ-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 SMCJ14AQ-13-F is usually 5 days.
3.What payment methods are accepted for SMCJ14AQ-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ14AQ-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ14AQ-13-F?
SMCJ14AQ-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ14AQ-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 SMCJ14AQ-13-F?
For technical support, including SMCJ14AQ-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ14AQ-13-F requirements.
6.How does Aetrix verify that SMCJ14AQ-13-F is sourced from the original manufacturer or authorized distributors?
All SMCJ14AQ-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 SMCJ14AQ-13-F meets industry standards.
7.What is the process for return or replacement of SMCJ14AQ-13-F?
All SMCJ14AQ-13-F units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ14AQ-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 SMCJ14AQ-13-F part is unused and in its original packaging.
Return procedure for SMCJ14AQ-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ14AQ-13-F Tags
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