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Diodes Incorporated P4SMAJ7.0ADF-13
- Part No.:
- P4SMAJ7.0ADF-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- 2-SMD, Flat Leads
- Datasheet:
-
P4SMAJ7.0ADF-13.pdf
- Description:
- TVS DIODE 7VWM 12VC D-FLAT
- Quantity:
- Payment:
- Shipping:
Inventory:6,858
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Product details
Overview
P4SMAJ7.0ADF-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 7.0V, clamping voltage of 12.0V at 33.3A peak pulse current, and IEC 61000-4-2 ESD rating of ±30kV (air/contact), used in industrial power supply input stages and USB port protection.
For engineers reviewing the P4SMAJ7.0ADF-13 datasheet, P4SMAJ7.0ADF-13 pinout, P4SMAJ7.0ADF-13 application, or P4SMAJ7.0ADF-13 equivalent, key selection criteria include clamping voltage margin relative to protected IC VMAX, peak pulse current capability under 10/1000µs waveform, thermal resistance on FR-4 PCB, and D-FLAT package compatibility with high-density layouts.
Technical Context
This unidirectional TVS diode operates in avalanche breakdown mode during transients, with a glass-passivated junction ensuring stable clamping performance across temperature. Its low-profile D-FLAT package provides 37°C/W junction-to-terminal thermal resistance when mounted on a 1"×1" 2oz copper pad, enabling effective heat dissipation during 400W non-repetitive surges.
The device exhibits 100µA maximum reverse leakage at 7.0V standoff, 7.78–8.60V breakdown range at 10mA test current, and 12.0V clamping voltage under 33.3A 10×1000µs pulse-critical for protecting 5V/3.3V logic rails without false triggering during normal operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 400W - sustains single 10×1000µs surge without failure |
| Reverse Standoff Voltage | 7.0V - maximum continuous DC voltage before significant leakage |
| Clamping Voltage @ IPP | 12.0V @ 33.3A - limits transient voltage seen by downstream circuitry |
| Breakdown Voltage Range | 7.78–8.60V @ 10mA - ensures reliable avalanche initiation above nominal rail |
| ESD Rating | ±30kV air / ±30kV contact per IEC 61000-4-2 - meets industrial immunity requirements |
| Thermal Resistance θJA | 114°C/W - defines temperature rise on standard FR-4 board at ambient |
| Capacitance @ 0V | ~500pF - impacts high-speed signal integrity in data line protection |
Pinout & Package
Package: D-FLAT (low-profile surface-mount, 2-terminal, cathode-banded polarity). Dimensions: 4.60 × 2.80 × 1.10 mm (L × W × H), weight ≈ 0.035 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Anode of internal PN junction | Connected to protected line; absorbs positive transients toward 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 construction | Ensures long-term reliability and consistent clamping performance under repeated surge stress |
| Low-profile D-FLAT package | Reduces board space by >40% vs. SMA while maintaining 400W surge rating |
| Lead-free, halogen-free, RoHS 3 compliant | Meets IPC-J-STD-020 Level 1 moisture sensitivity and global environmental regulations |
| ±30kV ESD protection | Eliminates need for additional ESD components in front-end I/O protection circuits |
Applications
| Industrial Power Input Protection | USB 2.0 Port Protection |
|---|---|
Use Scenario: 24V DC input stage of PLC I/O module exposed to load dump and inductive switching transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between input rail and chassis ground to clamp spikes up to 400W. Use Value: Limits transient voltage to ≤12.0V, preventing damage to upstream DC-DC controller rated for 16V max input. | Use Scenario: VBUS line of industrial USB host port subject to hot-plug ESD and cable discharge events. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 5V power line, coordinated with series ferrite and local decoupling. Use Value: Withstands ±30kV contact ESD per IEC 61000-4-2 while adding only 500pF capacitance to maintain USB 2.0 signal integrity. |
| RS-485 Transceiver Protection | Automotive Body Control Module |
Use Scenario: Data lines of isolated RS-485 transceiver in factory automation network exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Paired unidirectional TVS on A/B differential pair, referenced to common-mode ground. Use Value: Clamps common-mode transients to <12.0V, preserving transceiver's ±7V common-mode range and avoiding latch-up. | Use Scenario: 12V battery-supplied microcontroller power rail in BCM subjected to ISO 7637-2 pulse 1/2a/3a. IC Role / Device Role / Timing Role: Secondary clamping device after primary LC filter, handling fast-rising edge transients. Use Value: Delivers 33.3A peak pulse current capacity to suppress 100V/50ms pulses without degradation over 1000+ events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.0A | Higher clamping voltage (12.6V), larger SMB package (4.6 × 3.9 mm) | Lower board density; better thermal mass but less suitable for ultra-thin designs | Select when higher surge repetition rate or lower thermal resistance is required |
| 1.5SMC7.0A | Same 7.0V standoff but 1500W rating; DO-214AB package (7.1 × 6.2 mm) | Over-specified power rating increases cost and footprint unnecessarily for 400W use cases | Choose only if legacy board layout requires DO-214AB or future-proofing against higher-energy threats is mandated |
Compared with SMBJ7.0A and 1.5SMC7.0A, P4SMAJ7.0ADF-13 delivers optimal balance of 400W surge capability, D-FLAT footprint efficiency, and 12.0V clamping-making it ideal for space-constrained industrial and automotive ECUs where thermal management is achieved via PCB copper area rather than package volume.
Availability
P4SMAJ7.0ADF-13 is available at Aetrix Electronics and suitable for industrial power supplies, USB interface protection, RS-485 communication modules, and automotive body control units requiring stable component supply and full RoHS 3 compliance.
Supply support for P4SMAJ7.0ADF-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 overvoltage protection in harsh industrial and automotive environments where compact size and repeatable clamping performance are critical.
FAQ
What is the maximum operating temperature for P4SMAJ7.0ADF-13?
The device supports continuous operation from –55°C to +150°C junction temperature. At ambient temperatures above +75°C, derating applies: power dissipation drops linearly to zero at +175°C per Figure 1 in DS39017 Rev. 3-2. Board layout using ≥1"×1" 2oz copper pad maintains safe junction temperature under 400W pulse conditions.
Does P4SMAJ7.0ADF-13 meet AEC-Q200 for automotive use?
No-P4SMAJ7.0ADF-13 is not AEC-Q200 qualified. It is rated for industrial temperature range (–55°C to +150°C) and RoHS 3 compliance, but lacks the extended reliability testing (e.g., temperature cycling, board flex, humidity bias) required for automotive qualification. For AEC-Q200 applications, consider Diodes' APxxxx series or SMBJ7.0A-Q.
How does the D-FLAT package affect solder reflow profile?
The D-FLAT package has moisture sensitivity level 1 per J-STD-020, requiring no dry-pack or baking prior to reflow. Recommended peak reflow temperature is 260°C max for ≤10 seconds, with ramp rates matching IPC/JEDEC J-STD-020D. Matte tin annealed terminals ensure compatibility with both leaded and lead-free solder processes.
Can P4SMAJ7.0ADF-13 be used for bidirectional protection?
No-it is a unidirectional TVS diode intended for DC line protection with defined polarity (cathode to line, anode to ground). For bidirectional AC or differential signal protection, use a dedicated bidirectional part such as P4SMAJ7.0CA or SMBJ7.0CA; substituting this device would leave negative transients unprotected.
P4SMAJ7.0ADF-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):
- 7V
- Voltage - Breakdown (Min):
- 7.78V
- Voltage - Clamping (Max) @ Ipp:
- 12V
- Current - Peak Pulse (10/1000µs):
- 33.3A
- 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
P4SMAJ7.0ADF-13 FAQ
1.How can I place an order for P4SMAJ7.0ADF-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMAJ7.0ADF-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 P4SMAJ7.0ADF-13 reliable?
The price and inventory of P4SMAJ7.0ADF-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMAJ7.0ADF-13 is usually 5 days.
3.What payment methods are accepted for P4SMAJ7.0ADF-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMAJ7.0ADF-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMAJ7.0ADF-13?
P4SMAJ7.0ADF-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMAJ7.0ADF-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 P4SMAJ7.0ADF-13?
For technical support, including P4SMAJ7.0ADF-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMAJ7.0ADF-13 requirements.
6.How does Aetrix verify that P4SMAJ7.0ADF-13 is sourced from the original manufacturer or authorized distributors?
All P4SMAJ7.0ADF-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 P4SMAJ7.0ADF-13 meets industry standards.
7.What is the process for return or replacement of P4SMAJ7.0ADF-13?
All P4SMAJ7.0ADF-13 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMAJ7.0ADF-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 P4SMAJ7.0ADF-13 part is unused and in its original packaging.
Return procedure for P4SMAJ7.0ADF-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMAJ7.0ADF-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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