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Diodes Incorporated P4SMAJ5.0ADF-13
- Part No.:
- P4SMAJ5.0ADF-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- 2-SMD, Flat Leads
- Datasheet:
-
P4SMAJ5.0ADF-13.pdf
- Description:
- TVS DIODE 5VWM 9.2VC D-FLAT
- Quantity:
- Payment:
- Shipping:
Inventory:7,261
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Product details
Overview
P4SMAJ5.0ADF from Diodes Incorporated is a 400W surface-mount transient voltage suppressor (TVS) diode designed for unidirectional overvoltage protection in DC power lines and signal paths. It features a 5.0V reverse standoff voltage, 9.2V max clamping voltage at 43.5A peak pulse current, and IEC 61000-4-2 ESD rating of ±30kV (air/contact). Used in automotive infotainment power rails and industrial sensor interfaces.
For engineers reviewing the P4SMAJ5.0ADF datasheet, P4SMAJ5.0ADF pinout, P4SMAJ5.0ADF application, or P4SMAJ5.0ADF equivalent, key selection criteria include clamping voltage margin relative to protected IC VCC, thermal resistance on FR-4 PCBs, peak pulse power derating above +25°C, and D-FLAT package solderability per MIL-STD-202.
Technical Context
This TVS diode operates in avalanche breakdown mode during transients, with a glass-passivated silicon junction enabling fast response (<1 ns) to ESD and surge events. Its unidirectional configuration provides low forward voltage (3.5V @ 35A) while maintaining tight 6.4–7.25V breakdown tolerance at 10mA test current.
Thermal performance depends on PCB layout: RθJA is 114°C/W on 1"×1" 2oz copper and 88°C/W on 0.4"×0.5" 2oz copper. The D-FLAT package's 0.035g mass and 94V-0 flammability rating support high-density, safety-compliant board designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 400W - sustains 10×1000µs surges without failure under specified mounting conditions |
| Clamping Voltage | 9.2V @ 43.5A - limits voltage seen by downstream ICs during 8.3ms half-sine transients |
| Breakdown Voltage | 6.40–7.25V @ 10mA - ensures reliable triggering before protected circuit exceeds absolute maximum ratings |
| Reverse Standoff | 5.0V - defines maximum continuous DC voltage applied without significant leakage (<400µA) |
| ESD Rating | ±30kV air / ±30kV contact - meets IEC 61000-4-2 Level 4 for system-level ESD immunity |
| Thermal Resistance | 37°C/W junction-to-terminal - enables efficient heat transfer to PCB copper when mounted per recommended pad layout |
Pinout & Package
Package: D-FLAT (low-profile surface-mount), molded plastic case with UL 94V-0 flammability rating, cathode band polarity indicator, matte tin annealed terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Anode of internal PN junction | Connected to protected line; absorbs positive transients when referenced to ground |
| 2 (Anode) | Cathode of internal PN junction | Connected to system ground; completes clamping path during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated die | Ensures stable breakdown characteristics and long-term reliability under repeated surge stress |
| Low-profile D-FLAT | Reduces board height to ≤1.10mm and saves >40% area vs. SMA packages for space-constrained modules |
| Lead-free & green | Complies with RoHS 3 and halogen/antimony-free requirements (<900ppm Br/Cl, <1000ppm Sb) |
| Moisture sensitivity | Level 1 per J-STD-020 - no baking required prior to reflow assembly |
Applications
| Automotive Infotainment Power Rails | Industrial Sensor Signal Lines |
|---|---|
Use Scenario: Protecting 5V supply inputs of head unit microcontrollers from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between input capacitor and LDO regulator input. Use Value: Clamps 400W transients to ≤9.2V, preventing latch-up or damage to 5.5V-rated regulators and MCU IO pins. | Use Scenario: Safeguarding RS-485 transceiver data lines against ESD and induced surges in factory automation networks. IC Role / Device Role / Timing Role: Bidirectional protection not required; single P4SMAJ5.0ADF used per line with ground reference. Use Value: Limits voltage excursion to 9.2V during ±30kV ESD events, preserving signal integrity and avoiding transceiver shutdown. |
| USB Type-C VBUS Protection | Smart Meter Power Input |
Use Scenario: Secondary overvoltage clamp on 5V VBUS after primary fuse and filter in portable device charging circuits. IC Role / Device Role / Timing Role: Fast-acting shunt device triggered within nanoseconds of transient onset. Use Value: Withstands 43.5A peak pulse current while holding VBUS below USB spec limit of 5.5V + margin. | Use Scenario: Front-end protection for 5V auxiliary power derived from AC mains in utility metering systems. IC Role / Device Role / Timing Role: First-line defense against lightning-induced surges coupled through transformer windings. Use Value: Delivers 400W pulse handling with 114°C/W thermal resistance on standard 2oz FR-4, enabling sustained operation at +85°C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ5.0A | Higher clamping voltage (9.6V), larger SMB package (4.5×3.9mm vs. D-FLAT 4.6×2.8mm) | Less suitable for ultra-thin designs; requires more board area | Select when higher surge current rating (64.5A) outweighs size constraints |
| 1.5SMC5.0A | Same 5.0V standoff but 1500W rating; DO-214AB package (7.1×6.2mm) | Over-specified for 400W use cases; incompatible with fine-pitch layouts | Choose only if legacy footprint compatibility or extreme surge margin is mandatory |
Compared with SMBJ5.0A and 1.5SMC5.0A, P4SMAJ5.0ADF offers optimal balance of compact D-FLAT footprint, 400W capability, and 9.2V clamping-critical for space-limited 5V rail protection where thermal resistance and ESD robustness are prioritized over raw surge capacity.
Availability
P4SMAJ5.0ADF is available at Aetrix Electronics and suitable for automotive infotainment power rails, industrial sensor signal lines, and smart meter power inputs requiring stable component supply and full RoHS 3 compliance.
Supply support for P4SMAJ5.0ADF 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 suppression portfolio, engineered specifically for high-reliability, surface-mount surge protection in automotive, industrial, and consumer electronics where compact size and IEC 61000-4-2 compliance are essential.
FAQ
What is the maximum operating temperature for P4SMAJ5.0ADF?
The device supports continuous operation from –55°C to +150°C junction temperature. At +75°C lead temperature, its steady-state power dissipation is rated at 1.0W. Derating curves in the datasheet show 50% power reduction at +125°C ambient on standard FR-4 boards.
Does P4SMAJ5.0ADF require special PCB layout considerations?
Yes. To achieve specified thermal resistance (RθJA = 114°C/W), use a 1"×1", 2oz copper pad per the recommended layout. For improved thermal performance (RθJA = 88°C/W), reduce pad size to 0.4"×0.5" with 0.2"×0.25" copper area. Avoid thermal relief spokes on cathode/anode pads.
Can P4SMAJ5.0ADF be used for bidirectional protection?
No. It is a unidirectional TVS diode with cathode-anode polarity. For bidirectional protection, two devices must be connected in series opposing configuration, or a dedicated bidirectional part like P4SMAJ5.0CA should be selected instead.
What is the marking code for P4SMAJ5.0ADF on the device body?
The top-side marking is "HE", followed by a date code (e.g., "9XX" for 2019). This matches the Electrical Characteristics table where "HE" corresponds to VRWM = 5.0V and VBR range of 6.40–7.25V at 10mA test current.
P4SMAJ5.0ADF-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):
- 5V
- Voltage - Breakdown (Min):
- 6.4V
- Voltage - Clamping (Max) @ Ipp:
- 9.2V
- Current - Peak Pulse (10/1000µs):
- 43.5A
- 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
P4SMAJ5.0ADF-13 FAQ
1.How can I place an order for P4SMAJ5.0ADF-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMAJ5.0ADF-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 P4SMAJ5.0ADF-13 reliable?
The price and inventory of P4SMAJ5.0ADF-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMAJ5.0ADF-13 is usually 5 days.
3.What payment methods are accepted for P4SMAJ5.0ADF-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMAJ5.0ADF-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMAJ5.0ADF-13?
P4SMAJ5.0ADF-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMAJ5.0ADF-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 P4SMAJ5.0ADF-13?
For technical support, including P4SMAJ5.0ADF-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMAJ5.0ADF-13 requirements.
6.How does Aetrix verify that P4SMAJ5.0ADF-13 is sourced from the original manufacturer or authorized distributors?
All P4SMAJ5.0ADF-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 P4SMAJ5.0ADF-13 meets industry standards.
7.What is the process for return or replacement of P4SMAJ5.0ADF-13?
All P4SMAJ5.0ADF-13 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMAJ5.0ADF-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 P4SMAJ5.0ADF-13 part is unused and in its original packaging.
Return procedure for P4SMAJ5.0ADF-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMAJ5.0ADF-13 Tags
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onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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