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Diodes Incorporated P4SMAJ11ADF-13
- Part No.:
- P4SMAJ11ADF-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- 2-SMD, Flat Leads
- Datasheet:
-
P4SMAJ11ADF-13.pdf
- Description:
- TVS DIODE 11VWM 18.2VC D-FLAT
- Quantity:
- Payment:
- Shipping:
Inventory:9,657
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Product details
Overview
P4SMAJ11ADF-13 from Diodes Incorporated is a 400W surface-mount transient voltage suppressor (TVS) diode designed for unidirectional overvoltage protection in DC power lines and signal interfaces. It features a reverse standoff voltage of 11 V, clamping voltage of 18.2 V at 22 A peak pulse current, and IEC 61000-4-2 ESD rating of ±30 kV (air/contact). Used in industrial power supplies, automotive body electronics, and USB port protection circuits.
For engineers reviewing the P4SMAJ11ADF-13 datasheet, P4SMAJ11ADF-13 pinout, P4SMAJ11ADF-13 application, or P4SMAJ11ADF-13 equivalent, this device delivers verified clamping performance, low-profile D-FLAT packaging for space-constrained PCBs, and robust surge immunity per industry-standard 10/1000 µs waveform testing.
Technical Context
This unidirectional TVS diode operates with cathode-anode polarity and responds to transient overvoltages by entering avalanche breakdown to clamp voltage below 18.2 V at 22 A. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1 µA at 11 V).
Thermal resistance is rated at 37 °C/W (junction-to-terminal) on standard FR-4 board layouts, enabling reliable power dissipation up to 1.0 W steady-state and 400 W non-repetitive pulses. The device complies with RoHS 3 and halogen-free "Green" requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 400 W - Handles high-energy transients like lightning-induced surges without failure. |
| Reverse Standoff Voltage (VRWM) | 11 V - Maximum continuous DC voltage before clamping initiates; matches 12 V rail systems. |
| Clamping Voltage (VC @ IPP) | 18.2 V @ 22 A - Limits downstream voltage during surge, protecting 20 V-rated ICs. |
| Breakdown Voltage (VBR) | 12.2–13.5 V @ 1 mA - Tight tolerance ensures predictable turn-on behavior across production lots. |
| ESD Rating | ±30 kV (IEC 61000-4-2) - Protects against human-body-model and contact discharge events. |
| Package | D-FLAT - 2-pin, low-profile (1.1 mm max height), footprint optimized for automated assembly. |
Pinout & Package
Package: D-FLAT - molded plastic case, UL 94V-0 rated, cathode band marking, 0.035 g weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to protected line; conducts during overvoltage to shunt current to ground. |
| 2 | Anode | Typically tied to system ground; completes clamping path during transient events. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated die construction | Ensures long-term reliability and stable VBR drift under thermal cycling and humidity stress. |
| Low-profile D-FLAT package | Reduces board real estate by >40% vs. SMA packages while maintaining 400 W surge capability. |
| Lead-free, halogen-free, RoHS 3 compliant | Meets global environmental regulations without compromising solderability or thermal performance. |
| High ESD immunity (±30 kV) | Eliminates need for additional ESD protection stages in USB, CAN, and sensor interface designs. |
Applications
| Industrial Power Input Protection | Automotive Body Control Module |
|---|---|
|
Use Scenario: 24 V DC input stage of programmable logic controllers exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Primary clamping element placed between input rail and bulk capacitor. Use Value: Clamps transients to ≤18.2 V, preventing damage to upstream DC-DC converters and microcontrollers. |
Use Scenario: LIN bus transceiver power supply line in door module assemblies. IC Role / Device Role / Timing Role: Unidirectional TVS connected between VBAT and GND adjacent to transceiver IC. Use Value: Withstands repetitive 10/1000 µs surges up to 400 W, ensuring compliance with OEM EMC test plans. |
| USB 2.0 Port ESD Protection | Smart Meter Communication Interface |
|
Use Scenario: VBUS line protection in USB host ports subjected to user-handling ESD events. IC Role / Device Role / Timing Role: Standoff-clamp TVS placed inline with 5 V supply before USB controller. Use Value: Responds within <1 ns to ±30 kV discharges, limiting voltage excursion to safe levels for USB PHY ICs. |
Use Scenario: RS-485 transceiver power rail in utility smart meters deployed in electrically noisy substations. IC Role / Device Role / Timing Role: Secondary overvoltage clamp on isolated DC-DC output feeding communication IC. Use Value: Maintains 11 V nominal operation while surviving 40 A surge currents per IEC 61000-4-5 Level 3. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ11A | Same VRWM (11 V) and VC (18.2 V), but SMB package (higher profile, 2.3 mm height). | Less suitable for ultra-thin consumer devices; better thermal mass for higher average surge duty cycles. | Select when board height allows ≥2.3 mm and thermal derating above 75°C is required. |
| 1.5SMC11A | Higher peak power (1500 W), larger SMC package (7.1 mm × 6.2 mm), VF = 3.5 V at 35 A. | Used in primary AC/DC front-end protection; not compatible with fine-pitch D-FLAT layouts. | Choose only for high-energy surge environments where PCB space and height are unconstrained. |
Compared with SMBJ11A and 1.5SMC11A, P4SMAJ11ADF-13 offers optimal balance of low-profile packaging, precise 11 V standoff, and verified 400 W surge handling-making it ideal for space-limited industrial and automotive modules where consistent clamping response and RoHS/Green compliance are mandatory.
Availability
P4SMAJ11ADF-13 is available at Aetrix Electronics and suitable for industrial power input protection, automotive body control modules, and USB 2.0 port ESD protection requiring stable component supply and full traceability.
Supply support for P4SMAJ11ADF-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.
P4SMAJ11ADF-13 belongs to the P4SMAJ series of surface-mount TVS diodes engineered specifically for high-reliability transient suppression in compact, cost-sensitive industrial and automotive applications.
FAQ
What is the maximum operating temperature for P4SMAJ11ADF-13?
The device supports continuous operation from –55 °C to +150 °C junction temperature. Derating begins above +25 °C ambient, with peak pulse power reduced to ~70% at +75 °C and ~50% at +125 °C per Figure 1 in DS39017 Rev. 3-2.
Does P4SMAJ11ADF-13 meet automotive AEC-Q200 requirements?
No-P4SMAJ11ADF-13 is not AEC-Q200 qualified. It is rated for industrial and commercial applications. For automotive-grade TVS diodes, Diodes Incorporated offers the AEC-Q200-qualified DZ2J series with identical D-FLAT packaging and 11 V standoff.
Can P4SMAJ11ADF-13 be used in bidirectional configurations?
No-it is a unidirectional TVS diode with cathode-anode polarity. Bidirectional protection requires either a dedicated bidirectional part (e.g., P4SMAJ11CA) or back-to-back unidirectional devices; using P4SMAJ11ADF-13 alone will not protect against negative-going transients.
What is the typical junction capacitance at 0 V bias?
Typical total capacitance is 200 pF at 1 MHz and 0 V DC bias (per Figure 2 in DS39017 Rev. 3-2), making it suitable for data-line protection up to ~10 Mbps but not recommended for high-speed USB 3.0 or HDMI interfaces.
P4SMAJ11ADF-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):
- 11V
- Voltage - Breakdown (Min):
- 12.2V
- Voltage - Clamping (Max) @ Ipp:
- 18.2V
- Current - Peak Pulse (10/1000µs):
- 22A
- 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
P4SMAJ11ADF-13 FAQ
1.How can I place an order for P4SMAJ11ADF-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMAJ11ADF-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 P4SMAJ11ADF-13 reliable?
The price and inventory of P4SMAJ11ADF-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMAJ11ADF-13 is usually 5 days.
3.What payment methods are accepted for P4SMAJ11ADF-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMAJ11ADF-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMAJ11ADF-13?
P4SMAJ11ADF-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMAJ11ADF-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 P4SMAJ11ADF-13?
For technical support, including P4SMAJ11ADF-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMAJ11ADF-13 requirements.
6.How does Aetrix verify that P4SMAJ11ADF-13 is sourced from the original manufacturer or authorized distributors?
All P4SMAJ11ADF-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 P4SMAJ11ADF-13 meets industry standards.
7.What is the process for return or replacement of P4SMAJ11ADF-13?
All P4SMAJ11ADF-13 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMAJ11ADF-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 P4SMAJ11ADF-13 part is unused and in its original packaging.
Return procedure for P4SMAJ11ADF-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMAJ11ADF-13 Tags
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