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Diodes Incorporated P6SMAJ22ADF
- Part No.:
- P6SMAJ22ADF
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- 2-SMD, Flat Leads
- Datasheet:
-
P6SMAJ22ADF.pdf
- Description:
- TVS DIODE 22VWM 35.5VC D-FLAT
- Quantity:
- Payment:
- Shipping:
Inventory:9,955
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Product details
Overview
P6SMAJ22ADF from Diodes Incorporated is a 600W 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 22 V, breakdown voltage range 24.4–28.0 V at 1 mA test current, clamping voltage of 35.5 V at 16.9 A peak pulse current, and D-FLAT package for space-constrained PCB layouts - deployed in industrial power supplies and automotive body control modules.
For engineers reviewing the P6SMAJ22ADF datasheet, P6SMAJ22ADF pinout, P6SMAJ22ADF application, or P6SMAJ22ADF equivalent, key selection criteria include clamping voltage margin relative to protected IC VDD, thermal resistance under pulsed surge conditions, IEC 61000-4-5 compliance readiness, and compatibility with automated SMT assembly using matte tin–annealed terminals.
Technical Context
This unidirectional TVS diode operates as a shunt-clamping device triggered by reverse-biased avalanche breakdown. Its glass-passivated junction ensures stable leakage (<1 µA at 22 V) and repeatable clamping performance across temperature (–55°C to +150°C).
Designed for 10/1000 µs waveform transients per REA standard, it delivers 600 W non-repetitive peak pulse power with fast response time (<1 ns), supported by low thermal resistance (57 °C/W junction-to-terminal on optimized 0.4" × 0.5" copper pad).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600 W - sustains single 10/1000 µs surges without failure under defined board layout and ambient conditions |
| Reverse Standoff Voltage (VRWM) | 22 V - maximum continuous DC or RMS voltage applied without significant leakage current |
| Breakdown Voltage (VBR) | 24.4–28.0 V @ 1 mA - guaranteed avalanche initiation window defining turn-on threshold tolerance |
| Clamping Voltage (VC) | 35.5 V @ 16.9 A - maximum voltage seen by protected circuit during specified 10/1000 µs transient |
| Peak Pulse Current (IPP) | 16.9 A - peak current the device safely diverts while maintaining VC ≤ 35.5 V |
| Junction-to-Terminal RθJT | 57 °C/W - thermal resistance enabling reliable power dissipation when mounted on 0.4" × 0.5", 2 oz copper pad |
Pinout & Package
Package: D-FLAT - low-profile surface-mount plastic case (2.25–2.95 mm width, 3.95–4.60 mm length, 0.90–1.10 mm height), UL 94V-0 rated, with cathode band polarity indicator and matte tin–annealed copper leadframe.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Anode-side connection point for reverse-biased operation | Connected to protected line; conducts surge current to ground when VLINE exceeds VRWM |
| 2 (Anode) | Reference/ground return path | Typically tied to system ground plane; completes clamping path during transient events |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile D-FLAT package | Enables high-density PCB layouts with 0.9–1.1 mm height and 2.25–2.95 mm width footprint |
| Glass-passivated die construction | Ensures stable electrical parameters and long-term reliability under humidity and thermal cycling |
| 600 W peak pulse power rating | Provides robust protection against IEC 61000-4-5 Level 4 (4 kV/2 Ω) surges in industrial environments |
| Fast response time (<1 ns) | Clamps transients before sensitive downstream components experience overvoltage stress |
| RoHS-compliant, halogen-free "Green" construction | Meets EU Directive 2011/65/EU with Br+Cl <1500 ppm and Sb <1000 ppm for eco-conscious manufacturing |
Applications
| Industrial Power Supply Protection | Automotive Body Control Module (BCM) |
|---|---|
|
Use Scenario: Protecting 24 V DC input rails in programmable logic controllers (PLCs) against load dump and inductive switching transients. IC Role / Device Role / Timing Role: Shunt-clamping TVS placed between input rail and chassis ground to limit voltage excursions during 10/1000 µs surges. Use Value: Clamps to 35.5 V at 16.9 A, ensuring downstream DC-DC converters (rated 36 V max input) remain within safe operating limits. |
Use Scenario: Safeguarding LIN bus interface circuits and microcontroller I/O pins in door module ECUs exposed to battery voltage spikes. IC Role / Device Role / Timing Role: Unidirectional transient suppressor connected between LIN line and ground, activated only during negative-going surges. Use Value: Low 1 µA leakage at 22 V prevents signal integrity degradation on 19.2 kbps LIN communication lines. |
| Telecom DC Feeder Protection | Smart Meter Power Input Stage |
|
Use Scenario: Guarding -48 V DC power inputs in remote radio units (RRUs) against lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary-level TVS on feed line, coordinated with upstream gas discharge tube (GDT) for staged protection. Use Value: 600 W rating supports coordination with GDTs having ~100 ns follow-on arc voltage, minimizing let-through energy. |
Use Scenario: Securing AC/DC adapter output stage in residential smart meters subject to utility grid switching transients. IC Role / Device Role / Timing Role: Final-stage clamping device after bulk filtering, placed directly at meter SoC power input pins. Use Value: 35.5 V clamping voltage provides ≥15% margin above 30 V nominal rail, preventing latch-up in metrology ASICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ22A (ON Semiconductor) | Same 22 V VRWM, but 400 W PPK; higher clamping voltage (38.9 V @ 15.4 A); D-FLAT package with identical pinout | Limited to lower-energy transients; unsuitable for IEC 61000-4-5 Level 4 without derating | Select when cost sensitivity outweighs surge margin requirements and board layout allows thermal derating |
| 1.5SMC22A (Littelfuse) | Same 22 V VRWM, 600 W rating, but SMC package (larger footprint, 7.11 mm × 6.22 mm); clamping voltage 35.5 V @ 16.9 A | Requires additional PCB area; better thermal mass for repetitive surges but incompatible with ultra-dense layouts | Choose when higher thermal inertia is needed for frequent surge exposure and space permits larger package |
Compared with SMAJ22A and 1.5SMC22A, P6SMAJ22ADF uniquely balances 600 W surge capability with minimal D-FLAT footprint and industry-leading thermal resistance (57 °C/W), making it optimal for space-constrained, high-reliability industrial and automotive applications.
Availability
P6SMAJ22ADF is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, telecom DC feeder systems, and smart meter power input stages requiring stable component supply and consistent surge performance across production batches.
Supply support for P6SMAJ22ADF 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, manufacturing, and sales operations across Asia, Europe, and the Americas.
The P6SMAJ series belongs to Diodes' transient voltage suppressor product line, engineered specifically for high-power, low-profile surge protection in harsh industrial and automotive environments where board space and thermal performance are critical constraints.
FAQ
What is the maximum operating temperature for P6SMAJ22ADF?
The P6SMAJ22ADF has an operating junction temperature range of –55°C to +150°C, verified per its thermal characteristics table. Its thermal resistance (RθJT = 57 °C/W) assumes mounting on a 0.4" × 0.5", 2 oz copper pad; exceeding this layout may reduce allowable ambient temperature due to increased junction rise.
Does P6SMAJ22ADF meet RoHS and halogen-free requirements?
Yes - P6SMAJ22ADF is RoHS 2 compliant (2011/65/EU) and classified as a "Green" device: total bromine + chlorine <1500 ppm and antimony <1000 ppm, with matte tin–annealed terminals meeting MIL-STD-202 solderability standards.
How does the D-FLAT package affect PCB layout and thermal performance?
The D-FLAT package measures 2.25–2.95 mm × 3.95–4.60 mm × 0.90–1.10 mm and uses a single-sided copper pad (0.2" × 0.25") to achieve 57 °C/W junction-to-terminal thermal resistance. Its low profile avoids interference with adjacent tall components and enables placement under connectors or shields.
Can P6SMAJ22ADF be used in bidirectional configurations?
No - P6SMAJ22ADF is a unidirectional TVS diode with cathode/anode polarity marked by a band. For bidirectional protection, two devices must be connected in series opposing configuration, or a dedicated bidirectional part like P6SMBJ22CA should be selected instead.
P6SMAJ22ADF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- 2-SMD, Flat Leads
- Series:
- SMAJ
- Packaging:
- Cut Tape (CT)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 22V
- Voltage - Breakdown (Min):
- 24.4V
- Voltage - Clamping (Max) @ Ipp:
- 35.5V
- Current - Peak Pulse (10/1000µs):
- 16.9A
- Power - Peak Pulse:
- 600W
- 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
P6SMAJ22ADF FAQ
1.How can I place an order for P6SMAJ22ADF through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMAJ22ADF 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 P6SMAJ22ADF reliable?
The price and inventory of P6SMAJ22ADF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMAJ22ADF is usually 5 days.
3.What payment methods are accepted for P6SMAJ22ADF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMAJ22ADF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMAJ22ADF?
P6SMAJ22ADF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMAJ22ADF 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 P6SMAJ22ADF?
For technical support, including P6SMAJ22ADF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMAJ22ADF requirements.
6.How does Aetrix verify that P6SMAJ22ADF is sourced from the original manufacturer or authorized distributors?
All P6SMAJ22ADF 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 P6SMAJ22ADF meets industry standards.
7.What is the process for return or replacement of P6SMAJ22ADF?
All P6SMAJ22ADF units undergo pre-shipment inspection (PSI). If there is an issue with P6SMAJ22ADF, 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 P6SMAJ22ADF part is unused and in its original packaging.
Return procedure for P6SMAJ22ADF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMAJ22ADF Tags
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ESD9B5.0ST5G
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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