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Diodes Incorporated 3.0SMCJ14AQ-13
- Part No.:
- 3.0SMCJ14AQ-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3.0SMCJ14AQ-13.pdf
- Description:
- TVS DIODE 14VWM 23.2VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:8,640
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Product details
Overview
3.0SMCJ14AQ from Diodes Incorporated is an AEC-Q101-qualified unidirectional transient voltage suppressor (TVS) diode designed for automotive powerline protection. It features a 14 V reverse standoff voltage, 15.6–17.2 V breakdown range, ≤5 µA leakage at VRWM, 23.2 V clamping voltage at 129.3 A peak pulse current, and 3000 W (10/1000 µs) surge capability in SMC package - deployed in ADAS, HVAC, and infotainment ECUs to suppress load dump and ESD transients.
For engineers reviewing the 3.0SMCJ14AQ datasheet, 3.0SMCJ14AQ pinout, 3.0SMCJ14AQ application, or 3.0SMCJ14AQ equivalent, this device is selected for high-reliability 12 V automotive bus protection where ISO 7637-2 Pulse 1/2a/2b/3 and ISO 10605 compliance are mandatory, and where SMC-packaged 3 kW surge handling is required over SMAJ/SMBJ alternatives.
Technical Context
This TVS operates as a unidirectional clamping device, triggered when reverse voltage exceeds 15.6 V (min VBR), with guaranteed clamping at ≤23.2 V under 129.3 A (10/1000 µs). Its low dynamic impedance ensures rapid response to fast-rising transients like alternator load dump and inductive switching spikes.
Designed specifically for 12 V automotive systems, it meets AEC-Q101 stress testing (including temperature cycling, HTRB, and ESD), supports PPAP documentation, and is rated for operation from –65 °C to +175 °C junction temperature - enabling use in under-hood and body-control module environments without derating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Standoff Voltage (VRWM) | 14 V - maximum continuous DC operating voltage before clamping begins; matches nominal 12 V automotive bus with margin. |
| Breakdown Voltage (VBR) | 15.6–17.2 V @ IT = 1 mA - precise triggering threshold ensuring reliable activation before downstream IC damage. |
| Clamping Voltage (VC) | 23.2 V @ Ipp = 129.3 A (10/1000 µs) - limits transient voltage seen by protected circuitry to safe levels. |
| Peak Pulse Power (PPPM) | 3000 W - enables survival of severe ISO 7637-2 Pulse 1 (inductive switch-off) and Pulse 3b (ESD-like bursts). |
| Leakage Current (IR) | ≤5 µA @ 14 V - negligible standby power loss and no interference with low-power sensor or CAN bus circuits. |
| Operating Temperature | –65 °C to +175 °C - supports placement near engines, motors, or power electronics without thermal derating. |
Pinout & Package
3.0SMCJ14AQ uses the industry-standard SMC (DO-214AB) surface-mount package: 7.75–8.13 mm length, 6.60–7.11 mm width, 2.75–3.18 mm height, with gull-wing leads on 7.75 mm center-to-center spacing. The device has two terminals: Cathode (marked band) and Anode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground during overvoltage events. |
| Anode | Reference node | Typically tied to system ground or low-impedance return path; completes clamping loop for unidirectional operation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive under-hood reliability including HTOL, TC, and HTRB - eliminates need for internal qualification testing. |
| ISO 7637-2 compliance | Withstands defined load dump (Pulse 1), alternator switching (Pulse 2a/2b), and capacitive coupling (Pulse 3) - covers full automotive transient spectrum. |
| ISO 10605 ESD rating | Rated for ±30 kV air discharge and ±30 kV contact discharge - protects against human-body-model ESD in assembly and service. |
| 3000 W peak pulse power | Enables single-device protection of 12 V power rails without parallel stacking - reduces BOM count and PCB area vs. lower-power TVS arrays. |
Applications
| ADAS Camera Module Power Input | HVAC Blower Motor Control |
|---|---|
Use Scenario: Protecting 12 V supply to CMOS image sensor and ISP in forward-facing ADAS camera exposed to engine bay transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamping in-line with power rail upstream of LDO and PMIC; responds within nanoseconds to load dump pulses. Use Value: Prevents latch-up or gate oxide damage in image sensor ICs by limiting input voltage to ≤23.2 V during 129.3 A surges - maintaining functional safety integrity per ISO 26262 ASIL-B requirements. | Use Scenario: Safeguarding microcontroller and half-bridge driver supply in brushless blower motor ECU subjected to inductive kickback from PWM-driven windings. IC Role / Device Role / Timing Role: Primary power rail TVS placed at connector entry point; absorbs repetitive 100–500 A inductive spikes generated during MOSFET turn-off. Use Value: Eliminates need for external snubbers or RC networks by clamping transients below 24 V - reducing component count while meeting OEM EMC immunity specs (e.g., CISPR 25 Class 5). |
| Infotainment Head Unit USB Power | Body Control Module (BCM) LIN Bus |
Use Scenario: Shielding 5 V USB VBUS line in head unit from coupled transients originating from adjacent 12 V domains via shared ground or crosstalk. IC Role / Device Role / Timing Role: Secondary-stage TVS after primary 12 V rail protection; placed directly at USB port connector with minimal trace inductance. Use Value: Limits USB PHY IC overvoltage to <23.2 V even during simultaneous 12 V rail surges - preserving USB 2.0 signaling integrity and preventing enumeration failure. | Use Scenario: Protecting LIN transceiver supply pins in BCM against battery disconnection spikes and relay coil flyback in lighting control circuits. IC Role / Device Role / Timing Role: Low-leakage (≤5 µA) TVS on 12 V-to-LIN regulator input; co-located with linear regulator to prevent dropout during transient events. Use Value: Maintains stable 12 V bias to LIN transceiver during ISO 7637-2 Pulse 2a (battery rebound), avoiding bus reset or false wake-up - critical for sleep-mode current budget compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPSMD14A | Same VRWM (14 V), slightly higher VBR (15.6–17.6 V), identical VC (23.2 V), but rated for 3000 W only at 10/1000 µs with tighter thermal derating above 85 °C. | Approved for industrial-grade (not AEC-Q101) automotive programs; lacks PPAP support and ISO 10605 validation. | Select when cost sensitivity outweighs AEC-Q101 documentation requirements and ambient temperature remains <85 °C. |
| SMDJ14A | Identical electrical specs (VRWM=14 V, VBR=15.6–17.2 V, VC=23.2 V), same SMC package, but qualified to AEC-Q101 Rev G (vs. Rev H for 3.0SMCJ14AQ) and lacks ISO 10605 test report in standard datasheet. | Used in legacy automotive platforms; may require requalification for new ASIL-B designs due to updated ESD test reporting. | Prefer for drop-in replacement in existing designs already validated with SMDJ14A, but verify PPAP package completeness for new projects. |
Compared with TPSMD14A and SMDJ14A, the 3.0SMCJ14AQ provides full AEC-Q101 Rev H qualification, documented ISO 10605 compliance, and PPAP-ready documentation - making it the preferred choice for new ADAS and BCM designs requiring auditable automotive reliability evidence.
Availability
3.0SMCJ14AQ is available at Aetrix Electronics and suitable for Advanced Driver Assistance Systems (ADAS), HVAC motor control units, and infotainment head units requiring stable component supply across multi-year automotive production cycles.
Supply support for 3.0SMCJ14AQ 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 devices, with design centers in Asia, Europe, and the U.S., serving automotive, industrial, and consumer markets.
The 3.0SMCJ series belongs to Diodes' Automotive Grade TVS portfolio, engineered specifically to meet stringent OEM requirements for load dump suppression, ESD robustness, and long-term reliability in harsh automotive environments.
FAQ
Is 3.0SMCJ14AQ bidirectional or unidirectional?
3.0SMCJ14AQ is a unidirectional TVS diode, indicated by its single reverse standoff voltage (VRWM = 14 V) and specified breakdown behavior only in reverse bias. It is not rated for symmetrical clamping in both polarities and must be oriented with cathode toward the protected line.
What is the maximum junction temperature rating?
The absolute maximum junction temperature for 3.0SMCJ14AQ is +175 °C, verified per AEC-Q101 thermal characterization tests. This allows direct mounting on high-temperature PCB areas near power MOSFETs or motor drivers without thermal derating up to ambient +125 °C.
Does it meet ISO 7637-2 Pulse 5a (load dump)?
No - 3.0SMCJ14AQ is rated for ISO 7637-2 Pulses 1, 2a, 2b, and 3 only. Pulse 5a (load dump) requires higher energy handling (≥400 V, 100 ms); this device is intended for secondary protection, not primary load dump suppression - use dedicated load dump suppressors (e.g., LDP series) upstream.
Can it replace SMAJ14AQ in existing designs?
No - although both have VRWM = 14 V, SMAJ14AQ is SMA-packaged (400 W) and incompatible with SMC footprints. 3.0SMCJ14AQ's SMC package (3000 W) requires PCB layout change, thermal pad redesign, and revalidation of surge performance due to different parasitic inductance and thermal mass.
3.0SMCJ14AQ-13 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):
- 129.3A
- Power - Peak Pulse:
- 3000W (3kW)
- Power Line Protection:
- Yes
- Applications:
- -
- Capacitance @ Frequency:
- 3500pF @ 1MHz
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMC
3.0SMCJ14AQ-13 FAQ
1.How can I place an order for 3.0SMCJ14AQ-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 3.0SMCJ14AQ-13 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 3.0SMCJ14AQ-13 reliable?
The price and inventory of 3.0SMCJ14AQ-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 3.0SMCJ14AQ-13 is usually 5 days.
3.What payment methods are accepted for 3.0SMCJ14AQ-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3.0SMCJ14AQ-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3.0SMCJ14AQ-13?
3.0SMCJ14AQ-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3.0SMCJ14AQ-13 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 3.0SMCJ14AQ-13?
For technical support, including 3.0SMCJ14AQ-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3.0SMCJ14AQ-13 requirements.
6.How does Aetrix verify that 3.0SMCJ14AQ-13 is sourced from the original manufacturer or authorized distributors?
All 3.0SMCJ14AQ-13 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 3.0SMCJ14AQ-13 meets industry standards.
7.What is the process for return or replacement of 3.0SMCJ14AQ-13?
All 3.0SMCJ14AQ-13 units undergo pre-shipment inspection (PSI). If there is an issue with 3.0SMCJ14AQ-13, 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 3.0SMCJ14AQ-13 part is unused and in its original packaging.
Return procedure for 3.0SMCJ14AQ-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
3.0SMCJ14AQ-13 Tags
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