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Diodes Incorporated P4SMAJ15ADF-13
- Part No.:
- P4SMAJ15ADF-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- 2-SMD, Flat Leads
- Datasheet:
-
P4SMAJ15ADF-13.pdf
- Description:
- TVS DIODE 15VWM 24.4VC D-FLAT
- Quantity:
- Payment:
- Shipping:
Inventory:2,804
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Product details
Overview
P4SMAJ15ADF-13 from Diodes Incorporated is a 400W surface-mount transient voltage suppressor (TVS) diode in D-FLAT package, designed for unidirectional overvoltage protection on DC power rails and signal lines. It features a 15V reverse standoff voltage (VRWM), 16.7–18.5V breakdown range at 1mA, 24.4V clamping voltage at 16.4A peak pulse current, and meets IEC 61000-4-2 ESD immunity (±30kV air/contact).
For engineers reviewing the P4SMAJ15ADF-13 datasheet, P4SMAJ15ADF-13 pinout, P4SMAJ15ADF-13 application, or P4SMAJ15ADF-13 equivalent, this device is selected for robust surge suppression in industrial power supplies, automotive body electronics, USB port protection, and telecom interface circuits where low-profile mounting and high-energy clamping are required.
Technical Context
This unidirectional TVS diode operates as a shunt-clamping device that remains high-impedance below VRWM (15V) and rapidly transitions to low-impedance conduction above VBR (≥16.7V) to limit transient voltages. Its glass-passivated junction ensures stable leakage (<1µA at VRWM) and repeatable breakdown behavior across temperature.
The device uses a single-junction PN structure with cathode-band polarity marking and is rated for operation from –55°C to +150°C. Thermal resistance is 37°C/W (junction-to-terminal) on standard FR-4 PCBs, enabling reliable power dissipation during 10×1000µs transients up to 400W non-repetitive peak pulse power.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 400W - Sustains 10×1000µs surges without failure under defined thermal conditions |
| Reverse Standoff Voltage (VRWM) | 15V - Maximum continuous DC or RMS voltage before significant leakage begins |
| Breakdown Voltage (VBR) | 16.7–18.5V @ 1mA - Confirmed conduction onset range for reliable trigger margin |
| Clamping Voltage (VC) | 24.4V @ 16.4A - Maximum voltage seen by protected circuit during specified 10×1000µs transient |
| ESD Rating | ±30kV (air/contact) per IEC 61000-4-2 - Validated immunity against human-body-model discharges |
| Junction Temperature Range | –55°C to +150°C - Supports deployment in under-hood automotive and industrial environments |
| Package | D-FLAT - Low-profile (1.1mm max height), surface-mount package with 0.2mm pad clearance for automated assembly |
Pinout & Package
Package: D-FLAT (2-pin, single-sided, molded plastic case with UL 94V-0 rating; dimensions: 4.65mm × 2.80mm × 1.10mm max; cathode band denotes terminal 1).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode Band) | Anode connection for unidirectional clamping | Connected to protected line; conducts when transient exceeds VBR relative to ground |
| 2 | Cathode connection | Typically tied to system ground or low-impedance return path to complete clamping loop |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated die construction | Ensures long-term stability of breakdown voltage and leakage performance across humidity and thermal cycling |
| Low-profile D-FLAT package | Reduces board space by >40% vs. SMA packages while maintaining 400W surge capability |
| IEC 61000-4-2 ESD compliance | Eliminates need for external ESD protection stages in USB, RS-485, and CAN interfaces |
| Lead-free and halogen-free | Meets RoHS 3 and JEDEC J-STD-020 Level 1 moisture sensitivity for standard reflow compatibility |
Applications
| Industrial Power Supply Protection | Automotive Body Control Module |
|---|---|
Use Scenario: Protecting 12V/24V DC input rails in programmable logic controllers and motor drives from load-dump and inductive switching transients. IC Role / Device Role / Timing Role: Shunt-clamping TVS placed between rail and chassis ground to clamp surges within 1ns response time. Use Value: Limits voltage excursion to ≤24.4V during 16.4A transients, 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 against battery reverse-connection and jump-start spikes. IC Role / Device Role / Timing Role: Unidirectional transient suppressor mounted at connector entry point with cathode to ground. Use Value: Withstands ±30kV ESD events and 40A surge currents (8.3ms half-sine), ensuring ASIL-B functional safety compliance. |
| USB 2.0 Port Protection | Telecom Line Interface |
Use Scenario: Protecting VBUS and D+/D− lines in embedded USB host ports from ESD and hot-plug transients. IC Role / Device Role / Timing Role: Low-capacitance (≈100pF at 0V) TVS placed directly at USB connector pins. Use Value: Clamps ESD strikes to <24.4V without distorting 480Mbps data signals due to minimal parasitic capacitance. | Use Scenario: Guarding RS-485 transceiver inputs in base station remote units exposed to lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Primary-level surge protector installed before TVS arrays or GDTs in multi-stage protection schemes. Use Value: Absorbs up to 400W of transient energy per event, reducing stress on secondary protection components and extending system MTBF. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15A | Same VRWM (15V) and VC (24.4V), but SMB package (higher profile, 2.3mm height) | Less suitable for ultra-thin designs; higher thermal resistance (RθJA ≈ 125°C/W vs. 88°C/W) | Select when board height allows and legacy SMB footprint is preferred |
| 1.5SMC15A | Higher peak power (1500W), DO-214AB package (larger footprint, 7.1mm × 6.2mm) | Used in high-energy industrial surge protectors; not drop-in compatible due to size and thermal mass | Choose only when 400W is insufficient and PCB layout permits larger footprint |
Compared with SMBJ15A and 1.5SMC15A, P4SMAJ15ADF-13 delivers identical electrical protection in a 40% lower-profile package with superior thermal performance on compact PCBs-making it optimal for space-constrained, high-density layouts requiring certified ESD robustness.
Availability
P4SMAJ15ADF-13 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body electronics, USB interface protection, and telecom line interface circuits requiring stable component supply and full RoHS 3 compliance.
Supply support for P4SMAJ15ADF-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 equipment where compact size and IEC-compliant ESD immunity are mandatory.
FAQ
What is the maximum clamping voltage of P4SMAJ15ADF-13 under standard test conditions?
The maximum clamping voltage (VC) is 24.4V at a peak pulse current (IPP) of 16.4A, measured using the standardized 10×1000µs waveform per IEC 61000-4-5. This value is guaranteed across the full operating temperature range (–55°C to +150°C) and defines the upper voltage limit imposed on protected circuits during surge events.
Does P4SMAJ15ADF-13 support bidirectional transient suppression?
No. P4SMAJ15ADF-13 is a unidirectional TVS diode, configured for protection against positive transients on grounded systems. Its cathode-band marking indicates terminal 1 is the anode; it does not conduct for negative excursions beyond VRWM. For bidirectional protection, a symmetric device like P4SMAJ15CA must be used.
What is the typical total capacitance at zero bias, and how does it affect high-speed signal lines?
Typical total capacitance is approximately 100pF at 0V DC bias and 1MHz frequency. While acceptable for USB 2.0 and RS-485, this value may degrade signal integrity on USB 3.0 or HDMI lines; for such applications, lower-capacitance TVS devices (e.g., <5pF) are recommended instead.
Can P4SMAJ15ADF-13 be used in life-support equipment?
No. Diodes Incorporated explicitly prohibits use of this device in life-support systems without written authorization from its CEO. The P4SMAJ15ADF-13 is not qualified to ISO 13485 or AEC-Q200, and its reliability data does not cover fail-safe behavior required for medical implantables or critical patient-monitoring hardware.
P4SMAJ15ADF-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):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 24.4V
- Current - Peak Pulse (10/1000µs):
- 16.4A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D-Flat
P4SMAJ15ADF-13 FAQ
1.How can I place an order for P4SMAJ15ADF-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMAJ15ADF-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 P4SMAJ15ADF-13 reliable?
The price and inventory of P4SMAJ15ADF-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMAJ15ADF-13 is usually 5 days.
3.What payment methods are accepted for P4SMAJ15ADF-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMAJ15ADF-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMAJ15ADF-13?
P4SMAJ15ADF-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMAJ15ADF-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 P4SMAJ15ADF-13?
For technical support, including P4SMAJ15ADF-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMAJ15ADF-13 requirements.
6.How does Aetrix verify that P4SMAJ15ADF-13 is sourced from the original manufacturer or authorized distributors?
All P4SMAJ15ADF-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 P4SMAJ15ADF-13 meets industry standards.
7.What is the process for return or replacement of P4SMAJ15ADF-13?
All P4SMAJ15ADF-13 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMAJ15ADF-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 P4SMAJ15ADF-13 part is unused and in its original packaging.
Return procedure for P4SMAJ15ADF-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMAJ15ADF-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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