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Diodes Incorporated P4SMAJ17ADF-13
- Part No.:
- P4SMAJ17ADF-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- 2-SMD, Flat Leads
- Datasheet:
-
P4SMAJ17ADF-13.pdf
- Description:
- TVS DIODE 17VWM 27.6VC D-FLAT
- Quantity:
- Payment:
- Shipping:
Inventory:8,830
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Product details
Overview
P4SMAJ17ADF-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 17 V, clamping voltage of 27.6 V at 14.5 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 interface protection.
For engineers reviewing the P4SMAJ17ADF-13 datasheet, P4SMAJ17ADF-13 pinout, P4SMAJ17ADF-13 application, or P4SMAJ17ADF-13 equivalent, key selection criteria include clamping voltage margin relative to protected IC VMAX, peak pulse current capability under 10/1000 µs transients, thermal resistance on FR-4 PCBs, and D-FLAT package compatibility with high-density layouts.
Technical Context
This TVS diode operates in avalanche breakdown mode during transient events, delivering fast response (<1 ns) and low dynamic impedance to limit voltage excursions. Its glass-passivated junction ensures stable breakdown characteristics and long-term reliability under repetitive surge stress.
The device is optimized for single-polarity (unidirectional) protection with cathode-band polarity marking, requiring correct orientation in series with the protected line. Thermal performance depends critically on copper pad area: RθJA ranges from 88 °C/W (0.4"×0.5" pad) to 114 °C/W (1"×1" pad), directly impacting sustained surge handling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 400 W - Sustains single 10×1000 µs transients without failure under specified mounting conditions |
| Reverse Standoff Voltage (VRWM) | 17 V - Maximum continuous DC or RMS voltage before leakage exceeds 1 µA; sets minimum operating rail margin |
| Clamping Voltage (VC) | 27.6 V @ 14.5 A - Maximum voltage seen by downstream circuit during rated surge; must be below protected IC's absolute max rating |
| Breakdown Voltage (VBR) | 18.9–20.9 V @ 1 mA - Confirmed avalanche onset range; ensures reliable triggering above VRWM |
| ESD Rating | ±30 kV (IEC 61000-4-2, air & contact) - Validates robustness against human-body-model electrostatic discharge events |
| Junction-to-Ambient RθJA | 88–114 °C/W - Directly determines temperature rise during surge; lower value enables higher duty-cycle operation |
Pinout & Package
Package: D-FLAT (surface-mount, low-profile plastic case, UL 94V-0 rated, 0.035 g weight). Cathode band denotes terminal 1; anode is terminal 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode Band) | Transient Current Sink | Connected to protected line; conducts surge current to ground when VLINE exceeds VRWM |
| 2 (Anode) | Reference / Ground Return | Typically tied to system ground plane; completes current path during clamping event |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile D-FLAT package | Max height 1.10 mm; saves board space vs. SMA/SMB while maintaining 400W rating |
| Glass-passivated die | Eliminates moisture sensitivity drift and improves long-term leakage stability over temperature |
| High ESD immunity | ±30 kV contact/air per IEC 61000-4-2 - exceeds most end-equipment immunity requirements without additional staging |
| Halogen- and antimony-free | <900 ppm Br, <900 ppm Cl, <1000 ppm Sb - meets global environmental compliance mandates including RoHS 3 |
Applications
| Industrial Power Input Protection | Automotive Body Control Module |
|---|---|
Use Scenario: 24 V DC input rail in programmable logic controllers exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed upstream of DC-DC converter input to clamp transients before regulation stage. Use Value: 27.6 V clamping ensures protected converter IC (rated to 36 V abs max) remains within safe operating limits during 100 V/50 ms load dump events. |
Use Scenario: LIN bus transceiver power supply in door module subjected to battery disconnect spikes and ESD. IC Role / Device Role / Timing Role: Primary overvoltage clamp on VCC rail feeding LIN PHY IC. Use Value: ±30 kV ESD rating eliminates need for secondary ESD protection; 400W rating handles ISO 16750-2 jump-start surges. |
| USB 2.0 Data Line Protection | Smart Meter Communication Interface |
Use Scenario: VBUS and D+/D− lines in USB host port exposed to hot-plug and cable-induced transients. IC Role / Device Role / Timing Role: Discrete TVS array (one per line) placed adjacent to USB connector to shunt energy before USB controller. Use Value: Low capacitance (<50 pF at 0 V) prevents signal integrity degradation at 480 Mbps; D-FLAT footprint fits tight connector keep-out zones. |
Use Scenario: RS-485 transceiver power and data lines in utility smart meters deployed in electrically noisy substations. IC Role / Device Role / Timing Role: Secondary protection stage after primary gas discharge tube, absorbing residual energy from lightning-induced surges. Use Value: 14.5 A peak pulse current capability complements GDT's high-energy handling, enabling compact two-stage architecture meeting IEC 61000-4-5 Level 4. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ17A-Q | Same 17 V VRWM, but 400 W rating achieved in larger SMA package (RθJA = 65 °C/W); no D-FLAT footprint | Requires more PCB area; better thermal performance on minimal copper, but incompatible with ultra-thin designs | Select when thermal budget is tighter than board space constraints |
| 1.5SMC17A | Higher 1.5 kW rating in SMC package; VC = 27.6 V same, but VBR min = 18.9 V identical; 10×1000 µs waveform compliance confirmed | Overkill for 400W-class systems; introduces unnecessary cost and size unless multi-pulse or repeated surge testing required | Select only if design requires >1000 surges at full rating or needs higher IPP headroom |
Compared with SMAJ17A-Q and 1.5SMC17A, P4SMAJ17ADF-13 uniquely balances ultra-low profile (D-FLAT), industry-standard 400W surge rating, and proven ESD robustness-making it optimal for space-constrained industrial and automotive modules where board thickness and layout density are critical.
Availability
P4SMAJ17ADF-13 is available at Aetrix Electronics and suitable for industrial power input protection, automotive body control modules, and USB 2.0 data line protection requiring stable component supply across extended production cycles.
Supply support for P4SMAJ17ADF-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 protection, power management, and signal integrity solutions for industrial, automotive, and computing markets.
P4SMAJ17ADF-13 belongs to the P4SMAJ series of surface-mount TVS diodes engineered specifically for high-efficiency, low-profile transient suppression in harsh electromagnetic environments-targeting applications demanding both miniaturization and IEC-compliant surge resilience.
FAQ
What is the maximum allowable printed circuit board copper pad size for optimal thermal performance?
The datasheet specifies two thermal test conditions: RθJA = 88 °C/W uses a 0.4" × 0.5" (10.2 mm × 12.7 mm) 2 oz copper pad, while RθJA = 114 °C/W uses a 1" × 1" (25.4 mm × 25.4 mm) pad. For best surge endurance, use the larger pad; however, the smaller pad is sufficient for most 400W single-pulse applications and aligns with typical D-FLAT layout constraints.
Does P4SMAJ17ADF-13 meet AEC-Q200 stress testing requirements for automotive use?
No-P4SMAJ17ADF-13 is not AEC-Q200 qualified. While its construction (glass-passivated die, halogen-free materials) and performance (150°C TJ, ±30 kV ESD) align with automotive environmental demands, Diodes Incorporated does not list this part in its AEC-Q200-certified portfolio. For qualified alternatives, consider the AEC-Q200-compliant SMAJ17A-Q series.
Can this TVS diode be used in bidirectional signal line protection?
No-P4SMAJ17ADF-13 is unidirectional. Its schematic symbol and cathode-band marking indicate polarity-sensitive operation. For bidirectional protection (e.g., RS-485, CAN), use a symmetric TVS like the SMBJ17CA or select a dedicated bidirectional variant from the same family (e.g., P4SMAJ17CA-13, which is not offered in this D-FLAT series).
What is the typical total capacitance at 0 V bias, and how does it affect high-speed signal lines?
Per Figure 2 in DS39017, typical total capacitance is <50 pF at 0 V bias and 1 MHz. This low value ensures minimal signal distortion on interfaces up to 480 Mbps (USB 2.0 full-speed), provided layout parasitics are controlled. For >1 Gbps links (e.g., USB 3.0), capacitance becomes limiting, and smaller-footprint TVS devices or integrated ESD arrays are preferred.
P4SMAJ17ADF-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):
- 17V
- Voltage - Breakdown (Min):
- 18.9V
- Voltage - Clamping (Max) @ Ipp:
- 27.6V
- Current - Peak Pulse (10/1000µs):
- 14.5A
- 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
P4SMAJ17ADF-13 FAQ
1.How can I place an order for P4SMAJ17ADF-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMAJ17ADF-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 P4SMAJ17ADF-13 reliable?
The price and inventory of P4SMAJ17ADF-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMAJ17ADF-13 is usually 5 days.
3.What payment methods are accepted for P4SMAJ17ADF-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMAJ17ADF-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMAJ17ADF-13?
P4SMAJ17ADF-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMAJ17ADF-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 P4SMAJ17ADF-13?
For technical support, including P4SMAJ17ADF-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMAJ17ADF-13 requirements.
6.How does Aetrix verify that P4SMAJ17ADF-13 is sourced from the original manufacturer or authorized distributors?
All P4SMAJ17ADF-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 P4SMAJ17ADF-13 meets industry standards.
7.What is the process for return or replacement of P4SMAJ17ADF-13?
All P4SMAJ17ADF-13 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMAJ17ADF-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 P4SMAJ17ADF-13 part is unused and in its original packaging.
Return procedure for P4SMAJ17ADF-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMAJ17ADF-13 Tags
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