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Diodes Incorporated P6SMAJ40ADFQ-13
- Part No.:
- P6SMAJ40ADFQ-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- 2-SMD, Flat Leads
- Datasheet:
-
P6SMAJ40ADFQ-13.pdf
- Description:
- TRANSIENT VOLTAGE SUPPRESSOR D-F
- Quantity:
- Payment:
- Shipping:
Inventory:2,868
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Product details
Overview
P6SMAJ40ADFQ-13 from Diodes Incorporated is an AEC-Q101 qualified, 600W surface-mount transient voltage suppressor (TVS) diode in D-FLAT package, designed for automotive power line and signal line surge protection. It features a 40.0V reverse standoff voltage, 44.4–51.1V breakdown range at 1.0mA test current, 64.5V max clamping voltage at 9.3A peak pulse current, and is rated for -55°C to +150°C operation.
For engineers reviewing the P6SMAJ40ADFQ-13 datasheet, P6SMAJ40ADFQ-13 pinout, P6SMAJ40ADFQ-13 application, or P6SMAJ40ADFQ-13 equivalent, this TVS diode supports high-reliability automotive ESD/surge suppression where low-profile mounting, fast response (<1 ns), and IATF16949-certified manufacturing are required.
Technical Context
This unidirectional TVS diode operates as a voltage-clamping device across DC power rails or signal lines, conducting only when reverse voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable VBR tolerance and low leakage (<1.0 µA at 40V), while the D-FLAT package enables efficient thermal dissipation with RθJA = 92°C/W on compact PCB pads.
The device responds to 10/1000µs transients per IEC 61000-4-5, delivering 600W non-repetitive peak pulse power. Its 3.5V forward voltage at 35A surge current supports robust bidirectional surge handling in rectified or AC-coupled paths when used with external polarity control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600 W - Sustains single 10/1000µs surges up to 600W without failure under defined thermal conditions. |
| Reverse Standoff Voltage | 40.0 V - Maximum continuous DC or RMS voltage the device blocks without significant leakage. |
| Breakdown Voltage Range | 44.4–51.1 V @ 1.0 mA - Confirmed conduction onset window ensuring reliable clamping margin above operating rail. |
| Max Clamping Voltage | 64.5 V @ 9.3 A - Upper voltage limit during 10/1000µs surge; defines protected circuit's maximum transient exposure. |
| Peak Pulse Current | 9.3 A - Maximum surge current the device safely shunts while maintaining clamping performance. |
| Operating Temperature | -55°C to +150°C - Validated junction temperature range supporting under-hood automotive deployment. |
| Thermal Resistance (J-A) | 92 °C/W - Measured on 0.4" × 0.5" FR-4 board; determines steady-state power derating in real layouts. |
Pinout & Package
Package: D-FLAT (surface-mount, low-profile plastic case, cathode band marking, 0.035g weight). Dimensions: 4.65 mm × 2.80 mm × 1.10 mm (L × W × H), with 2.25–2.95 mm terminal width and 3.95–4.60 mm body length.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Transient current sink node | Connected to protected line; conducts surge current to ground when voltage exceeds VBR. |
| 2 (Anode) | Reference/ground return path | Typically tied to system ground or low-impedance return plane; completes clamping current loop. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including HTOL, TC, and ESD testing per stress requirements. |
| Glass passivated die | Ensures stable VBR over lifetime and reduces parameter drift under thermal cycling and humidity. |
| Low-profile D-FLAT package | Enables PCB space savings vs. SMA/SMB; optimized for automated placement and reflow compatibility. |
| RoHS 3 & "Green" compliant | Meets <900 ppm Br, <900 ppm Cl, <1000 ppm Sb; supports environmental compliance in Tier 1 automotive supply chains. |
| Fast response time | <1 ns turn-on delay ensures clamping activation before sensitive downstream ICs experience overvoltage damage. |
Applications
| Automotive Body Control Module (BCM) | Infotainment Power Supply Protection |
|---|---|
Use Scenario: Protects 12V battery-fed microcontroller I/O and CAN transceiver power rails against load dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between VBAT and GND, triggered within nanoseconds of overvoltage event. Use Value: Limits clamped voltage to 64.5V, keeping downstream 40V-rated LDOs and CAN PHYs within safe operating area during ISO 7637-2 Pulse 5a events. |
Use Scenario: Shields USB-C PD and display interface power inputs in head unit against ESD and conducted surges from vehicle harnesses. IC Role / Device Role / Timing Role: Standoff-rated TVS on 5V/9V/15V input rails, absorbing ±15kV contact ESD per IEC 61000-4-2. Use Value: Delivers sub-100ns clamping with <1.0 µA leakage at 40V, preserving standby current budget while meeting OEM EMC immunity specs. |
| ADAS Camera Power Input | Electric Power Steering (EPS) Sensor Interface |
Use Scenario: Guards 3.3V/5V imaging sensor supply lines against coupled transients from adjacent motor drivers and solenoids. IC Role / Device Role / Timing Role: Low-capacitance (≈15 pF at 0V) TVS mounted directly at connector entry point. Use Value: Maintains signal integrity on high-speed MIPI CSI-2 lines by minimizing parasitic capacitance while providing 600W surge immunity. |
Use Scenario: Protects analog Hall-effect position sensor outputs and SPI communication lines in EPS motor control units. IC Role / Device Role / Timing Role: Bidirectionally configured (with external series resistor) for differential signal pair clamping. Use Value: Enables robust operation under ISO 16750-2 Class IV vibration and electrical stress, with validated -55°C to +150°C functionality. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ40A-Q | Same 40V standoff and 64.5V clamping, but not AEC-Q101 qualified; RθJA = 115°C/W (less thermally efficient). | Limited to industrial/commercial use; unsuitable for PPAP-submission automotive programs. | Select when cost sensitivity outweighs automotive qualification and thermal performance requirements. |
| 1.5SMC40A-Q | Higher 1500W rating, DO-214AB package (larger footprint), 69.4V clamping at 21.7A IPP. | Better suited for higher-energy surges (e.g., alternator load dump), but incompatible with D-FLAT board space constraints. | Choose when surge energy exceeds 600W and PCB layout allows larger SMC footprint. |
Compared with SMAJ40A-Q and 1.5SMC40A-Q, P6SMAJ40ADFQ-13 uniquely balances AEC-Q101 compliance, D-FLAT space efficiency, and 600W capability-making it optimal for space-constrained automotive modules requiring certified reliability and thermal performance.
Availability
P6SMAJ40ADFQ-13 is available at Aetrix Electronics and suitable for automotive body electronics, infotainment systems, and ADAS camera modules requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for P6SMAJ40ADFQ-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, specializing in high-reliability components for automotive, industrial, and computing markets.
This device belongs to the P6SMAJxxADFQ automotive TVS family, engineered specifically for IATF16949-certified production of AEC-Q101-compliant surge protection in harsh-environment vehicle subsystems.
FAQ
What is the polarity configuration of P6SMAJ40ADFQ-13?
P6SMAJ40ADFQ-13 is a unidirectional TVS diode with cathode (pin 1) and anode (pin 2) terminals. The cathode band marking identifies the cathode; it must be connected toward the protected line, and the anode to ground or reference potential. This configuration provides precise clamping above the 40V standoff threshold without forward conduction during normal operation.
How does P6SMAJ40ADFQ-13 differ from standard SMAJ40A in automotive use?
Unlike standard SMAJ40A, P6SMAJ40ADFQ-13 undergoes full AEC-Q101 qualification, is manufactured in IATF16949:2016-certified facilities, supports PPAP documentation, and features tighter process controls for automotive change management. Its D-FLAT package also delivers lower thermal resistance (92°C/W vs. 115°C/W) on optimized PCB layouts.
Can P6SMAJ40ADFQ-13 be used in bidirectional configurations?
No-it is inherently unidirectional. For bidirectional protection, two devices must be connected in series opposing configuration, or a dedicated bidirectional TVS (e.g., P6SMBJ40CA-Q) should be selected. Using P6SMAJ40ADFQ-13 alone in AC or differential signal paths risks forward conduction and failure during negative transients.
What is the recommended PCB pad layout for thermal performance?
Diodes Incorporated specifies a 0.4" × 0.5" FR-4 copper pad (2 oz) for RθJA = 92°C/W. Recommended pad dimensions match the D-FLAT outline: 2.25–2.95 mm terminal width, 3.95–4.60 mm body length, with ≥0.2 mm solder mask clearance. Thermal vias under the cathode/anode pads further reduce junction temperature in high-duty-cycle applications.
P6SMAJ40ADFQ-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):
- 40V
- Voltage - Breakdown (Min):
- 44.4V
- Voltage - Clamping (Max) @ Ipp:
- 64.5V
- Current - Peak Pulse (10/1000µs):
- 9.3A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D-Flat
P6SMAJ40ADFQ-13 FAQ
1.How can I place an order for P6SMAJ40ADFQ-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMAJ40ADFQ-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 P6SMAJ40ADFQ-13 reliable?
The price and inventory of P6SMAJ40ADFQ-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMAJ40ADFQ-13 is usually 5 days.
3.What payment methods are accepted for P6SMAJ40ADFQ-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMAJ40ADFQ-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMAJ40ADFQ-13?
P6SMAJ40ADFQ-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMAJ40ADFQ-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 P6SMAJ40ADFQ-13?
For technical support, including P6SMAJ40ADFQ-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMAJ40ADFQ-13 requirements.
6.How does Aetrix verify that P6SMAJ40ADFQ-13 is sourced from the original manufacturer or authorized distributors?
All P6SMAJ40ADFQ-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 P6SMAJ40ADFQ-13 meets industry standards.
7.What is the process for return or replacement of P6SMAJ40ADFQ-13?
All P6SMAJ40ADFQ-13 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMAJ40ADFQ-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 P6SMAJ40ADFQ-13 part is unused and in its original packaging.
Return procedure for P6SMAJ40ADFQ-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMAJ40ADFQ-13 Tags
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