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Diodes Incorporated P4SMAJ14ADF-13
- Part No.:
- P4SMAJ14ADF-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- 2-SMD, Flat Leads
- Datasheet:
-
P4SMAJ14ADF-13.pdf
- Description:
- TVS DIODE 14VWM 23.2VC D-FLAT
- Quantity:
- Payment:
- Shipping:
Inventory:3,160
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Product details
Overview
P4SMAJ14ADF-13 from Diodes Incorporated is a 400W surface-mount transient voltage suppressor (TVS) diode in the D-FLAT package, designed for unidirectional overvoltage protection on DC power rails and signal lines. It features a 14V reverse standoff voltage (VRWM), 15.6–17.2V breakdown range at 1mA, 23.2V max clamping voltage at 17.2A peak pulse current, and meets IEC 61000-4-2 ESD immunity (±30kV air/contact).
For engineers reviewing the P4SMAJ14ADF-13 datasheet, P4SMAJ14ADF-13 pinout, P4SMAJ14ADF-13 application, or P4SMAJ14ADF-13 equivalent, this device is selected for robust surge suppression in industrial power supplies, automotive body electronics, and USB/serial interface protection where low-profile mounting and high-energy clamping are required.
Technical Context
This unidirectional TVS diode operates as a fast-acting shunt clamp during transient events, with a typical junction-to-terminal thermal resistance of 37°C/W and a maximum operating temperature of +150°C. Its glass-passivated die construction ensures stable breakdown characteristics and long-term reliability under repetitive surge stress.
The device responds to the standardized 10×1000µs waveform per IEC 61000-4-5, delivering 400W peak pulse power dissipation at TA = +25°C, derated linearly above ambient temperature. Its low 1.0µA reverse leakage at VRWM supports low-power system standby integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 400W - sustains single 10×1000µs transients without failure |
| Reverse Standoff Voltage (VRWM) | 14V - maximum continuous DC voltage before significant leakage |
| Breakdown Voltage (VBR) | 15.6–17.2V @ 1mA - precise triggering threshold for clamping onset |
| Clamping Voltage (VC) | 23.2V @ 17.2A - limits downstream voltage during worst-case surge |
| ESD Rating | ±30kV (air/contact) - exceeds IEC 61000-4-2 Level 4 immunity |
| Package | D-FLAT - 2.25–2.95mm width, 3.95–4.60mm length, 0.90–1.10mm height |
| Thermal Resistance (RθJT) | 37°C/W - enables efficient heat transfer to PCB copper pad |
Pinout & Package
Package: D-FLAT - low-profile surface-mount plastic case (UL 94V-0), cathode-banded polarity, matte tin-plated copper leadframe, weight ≈ 0.035g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Anode-side connection point | Connected to protected line; clamps to ground when transient exceeds VBR |
| 2 (Anode) | Cathode-side connection point | Typically tied to system ground; completes shunt path during overvoltage event |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile D-FLAT packaging | Reduces board space by >40% vs. SMA; ideal for dense PCB layouts |
| Glass-passivated die | Ensures stable VBR tolerance and long-term parameter drift < ±5% over life |
| IEC 61000-4-2 ESD rating | Supports direct integration into USB 2.0, RS-232, and CAN bus interfaces without external shielding |
| Lead-free & halogen-free | Complies with RoHS 3 (2015/863/EU) and JEDEC J-STD-020 moisture sensitivity Level 1 |
Applications
| Industrial Power Supply Protection | Automotive Body Control Module |
|---|---|
Use Scenario: Protecting 12V DC input rails in programmable logic controllers against load dump and inductive switching surges. IC Role / Device Role / Timing Role: Unidirectional shunt TVS diode placed between rail and chassis ground. Use Value: Clamps transients to ≤23.2V within nanoseconds, preventing damage to downstream DC-DC converters and microcontrollers. | Use Scenario: Safeguarding LIN bus and sensor supply lines in door modules and seat control units. IC Role / Device Role / Timing Role: Transient suppressor on 12V auxiliary rail feeding Hall-effect sensors and LED drivers. Use Value: Withstands repeated 40A surge pulses per ISO 7637-2 Pulse 1/2a, ensuring functional safety compliance. |
| USB 2.0 Data Line Protection | RS-485 Communication Interface |
Use Scenario: ESD protection on D+ and D− lines of embedded host controllers and peripheral hubs. IC Role / Device Role / Timing Role: Low-capacitance (≈100pF at 0V) unidirectional TVS placed adjacent to connector. Use Value: Maintains signal integrity up to 480Mbps while suppressing ±30kV contact ESD per IEC 61000-4-2. | Use Scenario: Transient suppression on A/B differential pairs in factory automation gateways and motor drives. IC Role / Device Role / Timing Role: Bidirectional protection implemented using two P4SMAJ14ADF-13 devices in back-to-back configuration. Use Value: Limits common-mode surges to <25V, preserving receiver input thresholds and avoiding false data errors. |
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 | Same VRWM and VC, but SMB package (larger footprint, higher RθJA = 125°C/W) | Better suited for lower-density boards with thermal relief pads | Select when board layout allows larger footprint and thermal management uses extended copper pour |
| 1.5SMC14A | Same electrical specs, but SMC package (4.5×7.0mm vs. D-FLAT's 4.0×2.6mm); 1500W rating | Higher energy handling but incompatible with ultra-thin or space-constrained designs | Choose only if system requires >400W surge margin and vertical clearance permits taller profile |
Compared with SMBJ14A and 1.5SMC14A, P4SMAJ14ADF-13 delivers identical clamping performance in a 35% smaller footprint and 20% lower thermal resistance-making it optimal for compact, thermally demanding industrial and automotive PCBs where board area and thermal efficiency are critical.
Availability
P4SMAJ14ADF-13 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body electronics, and USB/RS-485 interface protection requiring stable component supply across multi-year production cycles.
Supply support for P4SMAJ14ADF-13 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, headquartered in Plano, Texas, with design and manufacturing operations across Asia and the Americas.
The P4SMAJ series belongs to Diodes' transient voltage suppressor product line, engineered specifically for high-reliability, surface-mount surge protection in automotive, industrial, and communications infrastructure applications.
FAQ
What is the maximum clamping voltage of P4SMAJ14ADF-13 at its rated peak pulse current?
The maximum clamping voltage (VC) is 23.2V at a peak pulse current (IPP) of 17.2A, measured under the standard 10×1000µs waveform per IEC 61000-4-5. This value is guaranteed across the full operating temperature range of −55°C to +150°C and defines the upper voltage limit imposed on protected circuitry during surge events.
Is P4SMAJ14ADF-13 suitable for bidirectional transient protection?
No - P4SMAJ14ADF-13 is a unidirectional TVS diode, intended for DC rail protection where polarity is fixed. For bidirectional AC or differential-line protection (e.g., RS-485), two devices must be connected in series-opposing configuration, or a dedicated bidirectional part such as P4SMAJ14CA should be used instead.
What is the thermal resistance from junction to terminal (RθJT), and how does it impact PCB layout?
RθJT is 37°C/W when mounted on a 1"×1", 2oz FR-4 board with a 0.06"×0.09" copper pad. This low value means effective heat transfer relies on adequate copper area under the D-FLAT terminals; designers should use minimum 25 mm² thermal pad per terminal and avoid narrow traces to maintain surge rating at elevated ambient temperatures.
Does P4SMAJ14ADF-13 meet automotive qualification standards such as AEC-Q200?
No - P4SMAJ14ADF-13 is not AEC-Q200 qualified. While it meets IEC 61000-4-2/4-5 and operates from −55°C to +150°C, Diodes Incorporated lists it under "Standard" qualification in the ordering table. For automotive-grade applications, consider the AEC-Q200 qualified SMAJ14A or SMF14A series instead.
P4SMAJ14ADF-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- 2-SMD, Flat Leads
- 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):
- 17.2A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D-Flat
P4SMAJ14ADF-13 FAQ
1.How can I place an order for P4SMAJ14ADF-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMAJ14ADF-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 P4SMAJ14ADF-13 reliable?
The price and inventory of P4SMAJ14ADF-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMAJ14ADF-13 is usually 5 days.
3.What payment methods are accepted for P4SMAJ14ADF-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMAJ14ADF-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMAJ14ADF-13?
P4SMAJ14ADF-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMAJ14ADF-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 P4SMAJ14ADF-13?
For technical support, including P4SMAJ14ADF-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMAJ14ADF-13 requirements.
6.How does Aetrix verify that P4SMAJ14ADF-13 is sourced from the original manufacturer or authorized distributors?
All P4SMAJ14ADF-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 P4SMAJ14ADF-13 meets industry standards.
7.What is the process for return or replacement of P4SMAJ14ADF-13?
All P4SMAJ14ADF-13 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMAJ14ADF-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 P4SMAJ14ADF-13 part is unused and in its original packaging.
Return procedure for P4SMAJ14ADF-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMAJ14ADF-13 Tags
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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