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Diodes Incorporated P4SMAJ24ADF-13
- Part No.:
- P4SMAJ24ADF-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- 2-SMD, Flat Leads
- Datasheet:
-
P4SMAJ24ADF-13.pdf
- Description:
- TVS DIODE 24VWM 38.9VC D-FLAT
- Quantity:
- Payment:
- Shipping:
Inventory:6,718
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Product details
Overview
P4SMAJ24ADF-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 24V, clamping voltage of 38.9V at 10.3A peak pulse current, and IEC 61000-4-2 ESD rating of ±30kV (air/contact). It is used in industrial power supplies and automotive body control modules to safeguard sensitive ICs against lightning-induced surges and ESD events.
For engineers reviewing the P4SMAJ24ADF-13 datasheet, P4SMAJ24ADF-13 pinout, P4SMAJ24ADF-13 application, or P4SMAJ24ADF-13 equivalent, key selection criteria include clamping voltage margin relative to protected IC VDD, thermal resistance under PCB layout constraints, peak pulse current capability for IEC 61000-4-5 compliance, and D-FLAT package compatibility with high-density routing.
Technical Context
This TVS diode operates in avalanche breakdown mode during transient events, providing fast response (<1 ns) to voltage spikes exceeding its 24V reverse standoff threshold. Its glass-passivated die ensures stable breakdown characteristics and low leakage (<1 µA at VRWM).
The device is rated for 400W non-repetitive peak pulse power per 10×1000 µs waveform and exhibits a typical junction-to-terminal thermal resistance of 37°C/W on standard FR-4 board layouts - critical for sustained surge handling in thermally constrained designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 400 W - sustains single 10×1000 µs transients without failure in industrial surge environments |
| Reverse Standoff Voltage | 24 V - maximum continuous DC voltage before significant leakage; sets upper limit for protected circuit rail |
| Clamping Voltage @ IPP | 38.9 V - voltage seen by downstream IC during 10.3 A transient; must stay below IC absolute max rating |
| Breakdown Voltage Min/Max | 26.7 V / 29.5 V - guarantees reliable triggering across temperature and process variation |
| ESD Rating | ±30 kV (air/contact) - meets IEC 61000-4-2 Level 4 for system-level ESD immunity |
| Junction-to-Ambient RθJA | 114 °C/W - defines steady-state thermal rise on 1"×1" 2 oz copper pad; impacts derating above +25°C |
Pinout & Package
Package: D-FLAT (low-profile surface-mount), molded plastic case with UL 94V-0 flammability rating, cathode band polarity indicator, and matte tin–annealed copper leadframe.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Anode-side connection point for unidirectional TVS operation | Connected to protected line; clamps positive transients to ground when voltage exceeds VRWM |
| 2 (Anode) | Reference terminal tied to system ground or return path | Provides low-inductance return path for surge current; must be routed with minimal loop area |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated die construction | Ensures stable, repeatable breakdown voltage and long-term reliability under repeated surge stress |
| Low-profile D-FLAT package | Reduces board space by >40% vs. SMA; enables placement near connectors and I/O ports |
| Lead-free, halogen-free "Green" compliance | Meets RoHS 3 (2015/863/EU) and Diodes Inc.'s <900 ppm Br/Cl, <1000 ppm Sb requirements |
| Moisture sensitivity Level 1 | Eliminates need for dry-pack or baking prior to reflow; supports standard SMT assembly flow |
Applications
| Industrial PLC I/O Protection | Automotive Body Control Module |
|---|---|
Use Scenario: Protects 24V CAN/LIN bus interface pins from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between transceiver and connector. Use Value: Limits transient voltage to ≤38.9V, ensuring transceiver survival under 10.3A 10×1000 µs surge per ISO 16750-2. |
Use Scenario: Shields microcontroller GPIOs and sensor inputs from battery reverse-polarity and jump-start spikes. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 5V/12V supply rails feeding MCU peripherals. Use Value: Withstands 40A forward surge (IFSM), enabling robust protection without series fuse dependency. |
| Telecom Power Input Stage | Medical Diagnostic Equipment |
Use Scenario: Guards AC/DC adapter output against induced surges from nearby switching loads. IC Role / Device Role / Timing Role: Secondary-stage TVS after bulk filtering, upstream of DC-DC converters. Use Value: 400W peak power rating handles repetitive 10×1000 µs transients common in shared building power systems. |
Use Scenario: Safeguards analog front-end ADC inputs from ESD during cable hot-plug operations. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF at 0 V) TVS placed directly at connector entry point. Use Value: 38.9V clamping preserves signal integrity for 24V reference rails while meeting IEC 61000-4-2 Class 4. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24A (Bourns) | Same 24V VRWM, but SMB package (larger footprint); RθJA = 65°C/W vs. 114°C/W | Better thermal performance in high-power surge scenarios due to lower thermal resistance | Select when board layout allows larger SMB footprint and higher sustained surge duty cycle is required |
| 1.5KE24A (Littelfuse) | Through-hole DO-201 package; 1500W peak power but slower response (>5 ns) and higher capacitance | Not suitable for high-speed data lines; limited to low-frequency power rail protection | Choose only for legacy through-hole designs where rework to SMT is not feasible |
Compared with SMBJ24A and 1.5KE24A, P4SMAJ24ADF-13 offers optimal balance of compact D-FLAT packaging, sub-1 ns response, and verified 400W surge capability - making it preferred for space-constrained, high-speed industrial and automotive electronics where PCB real estate and signal integrity are critical.
Availability
P4SMAJ24ADF-13 is available at Aetrix Electronics and suitable for industrial PLC I/O protection, automotive body control modules, and telecom power input stages requiring stable component supply and full RoHS 3 compliance.
Supply support for P4SMAJ24ADF-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 facilities across Asia and the Americas.
P4SMAJ24ADF-13 belongs to the P4SMAJ series of high-power surface-mount TVS diodes engineered specifically for industrial-grade surge immunity in harsh electromagnetic environments.
FAQ
What is the maximum operating temperature for P4SMAJ24ADF-13?
The device has an operating junction temperature range of –55°C to +150°C. Its thermal derating curve shows 50% peak power capability at +75°C ambient, dropping to ~25% at +125°C. Board layout using 2 oz copper pads per the D-FLAT recommended footprint is essential to maintain this rating.
Does P4SMAJ24ADF-13 meet automotive AEC-Q200 requirements?
No - P4SMAJ24ADF-13 is not AEC-Q200 qualified. Diodes Incorporated offers the AEC-Q200-qualified P4SMAJ24AQ-13 variant (same electrical specs, automotive-grade screening) for automotive applications requiring qualification compliance.
How does the D-FLAT package affect PCB layout compared to SMA or SMB?
The D-FLAT package measures 2.25–2.95 mm × 3.95–4.60 mm with 0.90–1.10 mm height - ~30% smaller footprint than SMB and ~50% lower profile than SMA. Its dual-terminal configuration requires symmetric copper pour and avoids thermal asymmetry issues common in three-terminal packages.
Can P4SMAJ24ADF-13 be used for bidirectional transient suppression?
No - it is a unidirectional TVS diode with cathode-anode polarity. For bidirectional protection, use the complementary P4SMAJ24CA-13 (common-anode dual diode) or select a dedicated bidirectional part such as SMBJ24CA with matched breakdown symmetry.
P4SMAJ24ADF-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):
- 24V
- Voltage - Breakdown (Min):
- 26.7V
- Voltage - Clamping (Max) @ Ipp:
- 38.9V
- Current - Peak Pulse (10/1000µs):
- 10.3A
- 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
P4SMAJ24ADF-13 FAQ
1.How can I place an order for P4SMAJ24ADF-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMAJ24ADF-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 P4SMAJ24ADF-13 reliable?
The price and inventory of P4SMAJ24ADF-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMAJ24ADF-13 is usually 5 days.
3.What payment methods are accepted for P4SMAJ24ADF-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMAJ24ADF-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMAJ24ADF-13?
P4SMAJ24ADF-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMAJ24ADF-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 P4SMAJ24ADF-13?
For technical support, including P4SMAJ24ADF-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMAJ24ADF-13 requirements.
6.How does Aetrix verify that P4SMAJ24ADF-13 is sourced from the original manufacturer or authorized distributors?
All P4SMAJ24ADF-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 P4SMAJ24ADF-13 meets industry standards.
7.What is the process for return or replacement of P4SMAJ24ADF-13?
All P4SMAJ24ADF-13 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMAJ24ADF-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 P4SMAJ24ADF-13 part is unused and in its original packaging.
Return procedure for P4SMAJ24ADF-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMAJ24ADF-13 Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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