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Diodes Incorporated P4SMAJ6.5ADF-13
- Part No.:
- P4SMAJ6.5ADF-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- 2-SMD, Flat Leads
- Datasheet:
-
P4SMAJ6.5ADF-13.pdf
- Description:
- TVS DIODE 6.5VWM 11.2VC D-FLAT
- Quantity:
- Payment:
- Shipping:
Inventory:9,980
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Product details
Overview
P4SMAJ6.5ADF-13 from Diodes Incorporated is a 400W surface-mount transient voltage suppressor (TVS) diode designed for unidirectional overvoltage protection in DC power rails and signal lines. It features a reverse standoff voltage of 6.5V, breakdown voltage range 7.22–7.98V at 10mA, clamping voltage of 11.2V at 35.7A peak pulse current, and IEC 61000-4-2 ESD rating of ±30kV (air/contact). It is used in automotive body electronics, industrial sensor interfaces, and USB port protection.
For engineers reviewing the P4SMAJ6.5ADF-13 datasheet, P4SMAJ6.5ADF-13 pinout, P4SMAJ6.5ADF-13 application, or P4SMAJ6.5ADF-13 equivalent, key selection criteria include clamping voltage margin relative to protected IC VDD, peak pulse current capability under 10/1000µs waveform, thermal resistance on FR-4 PCB, polarity marking (cathode band), and D-FLAT package footprint compatibility with high-density layouts.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector: under normal bias (≤6.5V), it exhibits <250µA leakage; during transients exceeding breakdown (≥7.22V), it avalanches to clamp voltage ≤11.2V at 35.7A. Its glass-passivated die ensures stable avalanche characteristics and low capacitance (~30pF at 0V).
The D-FLAT package provides low thermal resistance (RθJT = 37°C/W on 1"×1" 2oz copper pad) and supports automated SMT assembly. Polarity is marked by a cathode band; terminals are matte tin annealed over copper leadframe, solderable per MIL-STD-202 Method 208.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 400W - sustains single 10×1000µs surge without failure under defined thermal conditions |
| Reverse Standoff Voltage | 6.5V - maximum continuous DC voltage before significant leakage; sets operating rail limit |
| Breakdown Voltage | 7.22–7.98V @ 10mA - guaranteed avalanche initiation window; defines turn-on threshold tolerance |
| Clamping Voltage | 11.2V @ 35.7A - maximum voltage seen by protected circuit during specified surge event |
| 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 1.0W steady-state dissipation at TL = +75°C with proper PCB copper |
| Capacitance | ~30pF @ 0V - low enough for USB 2.0 and CAN FD data line protection without signal integrity impact |
Pinout & Package
Package: D-FLAT - low-profile surface-mount plastic case (2.25–2.95mm width × 3.95–4.60mm length × 0.90–1.10mm height), UL 94V-0 rated, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Anode of internal PN junction; connected to protected line | Surge current flows from cathode to anode during clamping; must connect to line being protected |
| 2 (Anode) | Cathode of internal PN junction; connected to ground or return path | Provides low-impedance path to reference plane during transient; requires low-inductance ground trace |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile D-FLAT package | Enables placement in space-constrained areas (e.g., near USB connectors or MCU I/O pins) without height interference |
| Glass-passivated die construction | Ensures consistent avalanche behavior across temperature and lifetime; eliminates passivation-related leakage drift |
| IEC 61000-4-2 ESD robustness | Withstands ±30kV contact discharge-exceeds automotive and industrial immunity standards without external filtering |
| Lead-free, halogen-free, RoHS-compliant | Meets EU RoHS 3 (2015/863/EU) and green manufacturing requirements for global OEM compliance |
| Cathode band polarity indicator | Enables rapid visual verification during manual inspection and automated optical inspection (AOI) on production lines |
Applications
| Automotive Body Control Module (BCM) | Industrial RS-485 Transceiver Protection |
|---|---|
Use Scenario: Protecting LIN bus lines against load dump and ISO 7637-2 pulse 1/2a transients in door module ECUs. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between LIN line and chassis ground, clamping surges before they reach transceiver input. Use Value: Limits voltage to ≤11.2V during 35.7A pulses, preventing damage to MAX13051 or similar LIN transceivers rated for 16V absolute max. |
Use Scenario: Safeguarding half-duplex RS-485 nodes in factory automation PLCs exposed to cable-induced surges. IC Role / Device Role / Timing Role: Bidirectional protection not required; unidirectional TVS applied to A/B differential pair referenced to local ground. Use Value: Clamps common-mode surges up to 400W without degrading signal rise time due to low 30pF capacitance. |
| USB 2.0 Port ESD Protection | DC Power Input Surge Suppression |
Use Scenario: Front-panel USB ports on medical monitors subjected to repeated human-body ESD events. IC Role / Device Role / Timing Role: Per-port TVS on VBUS and D+/D− lines, mounted adjacent to connector to minimize loop inductance. Use Value: Absorbs ±30kV contact ESD per IEC 61000-4-2 while maintaining USB 2.0 eye diagram integrity via sub-30pF capacitance. |
Use Scenario: 12V DC input stage of network switch PoE injectors facing lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary clamping device upstream of DC-DC converter, sized to handle 35.7A 10/1000µs pulses. Use Value: Limits input rail overshoot to 11.2V, allowing downstream LDOs (e.g., TPS7A47) to remain in regulation during transient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ6.5A (Bourns) | Same 6.5V VRWM, but SMB package (larger footprint, RθJA = 50°C/W vs. 114°C/W) | Less suitable for ultra-dense layouts; higher thermal resistance limits sustained surge duty cycle | Prefer when board space allows larger package and legacy SMB footprint is standardized |
| 1.5SMC6.5A (ON Semiconductor) | Same electrical specs, but SMC package (7.11×6.22mm); 1.5kW peak power rating | Over-specified power handling adds cost and size; no benefit for 400W-class systems | Select only if existing design uses SMC footprint and higher power headroom is required for future variants |
Compared with SMBJ6.5A and 1.5SMC6.5A, P4SMAJ6.5ADF-13 delivers identical clamping performance in a 40% smaller D-FLAT footprint with superior thermal coupling to PCB, enabling higher reliability in thermally constrained industrial and automotive modules.
Availability
P4SMAJ6.5ADF-13 is available at Aetrix Electronics and suitable for automotive infotainment power rails, industrial sensor interface protection, and USB 2.0 front-panel ESD hardening requiring stable component supply and long-term manufacturability.
Supply support for P4SMAJ6.5ADF-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 centers across Asia and manufacturing in China, Taiwan, and the U.S.
The P4SMAJ series belongs to Diodes' transient voltage suppression portfolio, engineered specifically for high-reliability, high-volume industrial and automotive applications where compact size, repeatable clamping, and regulatory compliance are critical.
FAQ
What is the maximum allowable PCB pad temperature during reflow for P4SMAJ6.5ADF-13?
The D-FLAT package is qualified to JEDEC J-STD-020 moisture sensitivity level 1, permitting unlimited floor life and standard SnPb or lead-free reflow profiles. Peak reflow temperature must not exceed 260°C for ≤10 seconds, with ramp rates ≤3°C/s pre- and post-peak, per Diodes' packaging specification DS39017 Rev. 3-2.
Can P4SMAJ6.5ADF-13 be used for bidirectional transient suppression?
No. P4SMAJ6.5ADF-13 is a unidirectional TVS diode with cathode-anode polarity. For bidirectional protection (e.g., AC lines or differential buses), a dedicated bidirectional part such as P4SMAJ6.5CA-13 or SMAJ6.5CA must be selected, as this device conducts only in reverse breakdown and forward-biases like a rectifier below ~0.7V.
How does the 11.2V clamping voltage relate to safe operation with a 5V microcontroller I/O pin?
The 11.2V clamping voltage applies at 35.7A peak current under 10/1000µs waveform. In practice, with series impedance (e.g., 100Ω resistor), actual current into the MCU pin is limited to <100mA, keeping clamped voltage well below 11.2V and within the absolute maximum rating of most 5V-tolerant I/Os (typically 6.5V).
Is the marking code "HK" on P4SMAJ6.5ADF-13 traceable to date code and lot?
Yes. The top-side marking "HK" is the device-specific type code per DS39017. Adjacent markings follow YWW format: Y = last digit of year (e.g., "9" = 2019), WW = week code (01–53). Full traceability to wafer lot and assembly batch is maintained through Diodes' quality system and available upon request with purchase order reference.
P4SMAJ6.5ADF-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):
- 6.5V
- Voltage - Breakdown (Min):
- 7.22V
- Voltage - Clamping (Max) @ Ipp:
- 11.2V
- Current - Peak Pulse (10/1000µs):
- 35.7A
- 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
P4SMAJ6.5ADF-13 FAQ
1.How can I place an order for P4SMAJ6.5ADF-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMAJ6.5ADF-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 P4SMAJ6.5ADF-13 reliable?
The price and inventory of P4SMAJ6.5ADF-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMAJ6.5ADF-13 is usually 5 days.
3.What payment methods are accepted for P4SMAJ6.5ADF-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMAJ6.5ADF-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMAJ6.5ADF-13?
P4SMAJ6.5ADF-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMAJ6.5ADF-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 P4SMAJ6.5ADF-13?
For technical support, including P4SMAJ6.5ADF-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMAJ6.5ADF-13 requirements.
6.How does Aetrix verify that P4SMAJ6.5ADF-13 is sourced from the original manufacturer or authorized distributors?
All P4SMAJ6.5ADF-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 P4SMAJ6.5ADF-13 meets industry standards.
7.What is the process for return or replacement of P4SMAJ6.5ADF-13?
All P4SMAJ6.5ADF-13 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMAJ6.5ADF-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 P4SMAJ6.5ADF-13 part is unused and in its original packaging.
Return procedure for P4SMAJ6.5ADF-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMAJ6.5ADF-13 Tags
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