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Diodes Incorporated P4SMAJ54ADF-13
- Part No.:
- P4SMAJ54ADF-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- 2-SMD, Flat Leads
- Datasheet:
-
P4SMAJ54ADF-13.pdf
- Description:
- TRANSIENT VOLTAGE SUPPRESSOR D-F
- Quantity:
- Payment:
- Shipping:
Inventory:9,533
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Product details
Overview
P4SMAJ54ADF-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 54 V, clamping voltage of 87.1 V at 4.6 A peak pulse current, and IEC 61000-4-2 ESD rating of ±30 kV (air/contact). It is used in industrial power supplies and automotive body control modules to protect downstream ICs from surge transients.
For engineers reviewing the P4SMAJ54ADF-13 datasheet, P4SMAJ54ADF-13 pinout, P4SMAJ54ADF-13 application, or P4SMAJ54ADF-13 equivalent, key selection criteria include clamping voltage margin relative to protected IC's absolute maximum rating, thermal resistance under PCB layout constraints, peak pulse current capability for ISO 7637-2 compliance, and D-FLAT package solderability on high-density boards.
Technical Context
This TVS diode operates in avalanche breakdown mode during transient events, providing fast response (<1 ns) to clamp voltage spikes while maintaining low leakage (<1 µA at 54 V). Its glass-passivated junction ensures stable breakdown characteristics and long-term reliability under repetitive surge stress.
The device is optimized for single-direction protection with cathode-band polarity marking and requires no external biasing. Thermal performance depends critically on copper pad area: RθJA ranges from 88 °C/W (small pad) to 114 °C/W (standard pad), directly impacting sustained surge handling in compact layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 400 W - Sustains single 10×1000 µs transients without failure under defined thermal conditions |
| Reverse Standoff Voltage (VRWM) | 54 V - Maximum continuous DC operating voltage before significant leakage begins |
| Clamping Voltage (VC) | 87.1 V @ 4.6 A - Maximum voltage seen by protected circuit during specified 10×1000 µs surge |
| Breakdown Voltage (VBR) | 60.0–66.3 V @ 1 mA - Confirmed avalanche onset range ensuring predictable turn-on margin above VRWM |
| ESD Rating | ±30 kV (air/contact) per IEC 61000-4-2 - Validated immunity to human-body-model electrostatic discharge events |
| Thermal Resistance (RθJA) | 88–114 °C/W - Directly determines temperature rise under surge duty cycle; pad size dependent |
Pinout & Package
Package: D-FLAT - Low-profile surface-mount package (2.25–2.95 mm width × 3.95–4.60 mm length × 0.90–1.10 mm height) with matte tin–annealed copper leadframe, UL 94V-0 molded plastic case, and cathode band polarity indicator.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Transient current sink | Connected to protected line; conducts surge current to ground when voltage exceeds VBR |
| 2 (Anode) | Reference/ground return | Typically tied to system ground plane; completes conduction path during clamping event |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated die construction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure |
| Low-profile D-FLAT package | Reduces board space by >40% vs. SMA; enables placement near connectors and I/O ports |
| Lead-free and halogen-free | Complies with RoHS 3 (2015/863/EU) and Diodes Inc.'s "Green" definition (<900 ppm Br/Cl, <1000 ppm Sb) |
| IEC 61000-4-2 certified ESD robustness | Validated to ±30 kV contact/air discharge, eliminating need for additional ESD components in many designs |
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 inductive switching noise. IC Role / Device Role / Timing Role: Unidirectional TVS placed between input connector and upstream fuse, clamping transients before they reach DC-DC converter ICs. Use Value: 87.1 V clamping voltage provides 12 V margin below typical 100 V max rating of industrial-grade buck controllers, preventing latch-up or gate oxide damage. |
Use Scenario: LIN bus line in door module subjected to ESD events during assembly and service. IC Role / Device Role / Timing Role: TVS connected between LIN signal line and chassis ground, absorbing ±30 kV ESD pulses without signal distortion. Use Value: Sub-1 ns response time and 1.0 µA leakage at 54 V ensure minimal impact on LIN timing integrity and quiescent current budget. |
| Telecom PoE Interface | Medical Diagnostic Equipment |
Use Scenario: 48 V Power over Ethernet (PoE) data line in network switch port facing lightning-induced surges. IC Role / Device Role / Timing Role: Primary surge protector on PSE side, coordinated with secondary TVS and common-mode choke. Use Value: 400 W peak power rating supports IEEE 802.3bt Type 4 surge requirements; D-FLAT footprint allows dense placement near RJ45 magnetics. |
Use Scenario: External sensor interface on ultrasound imaging console exposed to clinical ESD events. IC Role / Device Role / Timing Role: Signal-line TVS on analog front-end inputs, protecting precision ADCs and op-amps from ESD-induced latch-up. Use Value: 54 V VRWM matches typical sensor supply rails; low capacitance (<100 pF at 0 V) avoids degrading 1–10 MHz signal bandwidth. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ54A-TB-E3-08 (Vishay) | Same VRWM (54 V), higher VC (93.6 V), SMB package (larger footprint, higher RθJA) | Less suitable for ultra-dense layouts; better for higher-energy surges due to 600 W rating | Select when board space permits and surge energy exceeds 400 W capability |
| 1.5SMC54A (ON Semiconductor) | Same VRWM (54 V), identical VC (87.1 V), SMC package (3.5 mm × 7.0 mm), higher PM(AV) (1.5 W) | Requires more PCB area; preferred where higher steady-state power dissipation is needed | Choose when thermal management relies on larger copper pads or forced-air cooling |
Compared with SMBJ54A-TB-E3-08 and 1.5SMC54A, P4SMAJ54ADF-13 offers the smallest footprint (D-FLAT) and lowest profile for space-constrained applications, while maintaining identical clamping performance-making it optimal for modern miniaturized industrial and automotive electronics where board real estate is premium.
Availability
P4SMAJ54ADF-13 is available at Aetrix Electronics and suitable for industrial power input protection, automotive body control modules, and telecom PoE interface designs requiring stable component supply, consistent parametric performance across production lots, and full traceability to Diodes Incorporated wafer fabrication.
Supply support for P4SMAJ54ADF-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 consumer markets.
The P4SMAJ series belongs to Diodes' transient voltage suppressor portfolio, engineered specifically for robust, low-profile surge protection in space-constrained DC power and communication interfaces where fast response and repeatable clamping are critical.
FAQ
What is the maximum allowable ambient temperature for continuous operation?
The P4SMAJ54ADF-13 has an operating temperature range of –55 °C to +150 °C. However, its peak pulse power derates linearly above +25 °C: at +75 °C ambient, only ~70% of 400 W is sustainable. For reliable long-term operation, keep junction temperature below +150 °C using appropriate PCB copper area per the datasheet's thermal resistance notes.
Does this TVS diode require a heatsink for surge handling?
No external heatsink is required. The device relies on PCB copper pads for thermal dissipation. With a 0.2" × 0.25" copper pad (per Note 8), RθJA is 88 °C/W-sufficient for single-pulse events. For repetitive surges (>4 pulses/minute), increase pad area or add thermal vias to maintain safe junction temperature.
Can P4SMAJ54ADF-13 be used in bidirectional configurations?
No-it is a unidirectional TVS diode with cathode-anode polarity. Bidirectional protection requires either two devices in series opposition or a dedicated bidirectional part like P4SMAJ54CA-13. Using this part in reverse-biased configuration will not provide clamping and may fail catastrophically.
How does its clamping performance compare to older SMAJ-series parts?
P4SMAJ54ADF-13 delivers identical clamping voltage (87.1 V) and peak pulse current (4.6 A) as the legacy SMAJ54A but in a 30% smaller D-FLAT package. It also adds RoHS 3 and halogen-free compliance, improved moisture sensitivity rating (Level 1), and tighter VBR tolerance (60.0–66.3 V vs. older ±5% spec).
P4SMAJ54ADF-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- 2-SMD, Flat Leads
- Series:
- P4SMAJ
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 54V
- Voltage - Breakdown (Min):
- 60V
- Voltage - Clamping (Max) @ Ipp:
- 87.1V
- Current - Peak Pulse (10/1000µs):
- 4.6A
- 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
P4SMAJ54ADF-13 FAQ
1.How can I place an order for P4SMAJ54ADF-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMAJ54ADF-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 P4SMAJ54ADF-13 reliable?
The price and inventory of P4SMAJ54ADF-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMAJ54ADF-13 is usually 5 days.
3.What payment methods are accepted for P4SMAJ54ADF-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMAJ54ADF-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMAJ54ADF-13?
P4SMAJ54ADF-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMAJ54ADF-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 P4SMAJ54ADF-13?
For technical support, including P4SMAJ54ADF-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMAJ54ADF-13 requirements.
6.How does Aetrix verify that P4SMAJ54ADF-13 is sourced from the original manufacturer or authorized distributors?
All P4SMAJ54ADF-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 P4SMAJ54ADF-13 meets industry standards.
7.What is the process for return or replacement of P4SMAJ54ADF-13?
All P4SMAJ54ADF-13 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMAJ54ADF-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 P4SMAJ54ADF-13 part is unused and in its original packaging.
Return procedure for P4SMAJ54ADF-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMAJ54ADF-13 Tags
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