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Diodes Incorporated P6SMAJ9.0ADF
- Part No.:
- P6SMAJ9.0ADF
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- 2-SMD, Flat Leads
- Datasheet:
-
P6SMAJ9.0ADF.pdf
- Description:
- TVS DIODE 9VWM 15.4VC D-FLAT
- Quantity:
- Payment:
- Shipping:
Inventory:2,966
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Product details
Overview
P6SMAJ9.0ADF 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 9.0 V, breakdown voltage range of 10.0–11.5 V at 1.0 mA test current, clamping voltage of 15.4 V at 39.0 A peak pulse current, and low leakage of ≤5.0 µA at VRWM - deployed in industrial power supplies and automotive body control modules.
For engineers reviewing the P6SMAJ9.0ADF datasheet, P6SMAJ9.0ADF pinout, P6SMAJ9.0ADF application, or P6SMAJ9.0ADF equivalent, key selection criteria include clamping voltage margin relative to protected IC VCC rails, thermal resistance under PCB copper pad constraints, IEC 61000-4-5 surge compliance capability, and D-FLAT package footprint compatibility with high-density layouts.
Technical Context
This unidirectional TVS diode operates as a shunt-clamping device triggered by reverse-biased avalanche breakdown. Its glass-passivated junction ensures stable breakdown characteristics and fast response time (<1 ns), enabling effective suppression of ESD (IEC 61000-4-2), EFT (IEC 61000-4-4), and lightning-induced surges (IEC 61000-4-5).
The device uses a low-profile D-FLAT package with cathode band polarity marking and matte tin–annealed copper leadframe. Thermal performance depends on PCB copper area: RθJA is 115 °C/W (1" × 1" pad) or 92 °C/W (0.4" × 0.5" pad), supporting reliable operation up to +150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600 W - sustains single 10/1000 µs transients without failure under defined PCB thermal conditions |
| Reverse Standoff Voltage (VRWM) | 9.0 V - maximum continuous DC or RMS voltage before significant leakage begins |
| Breakdown Voltage (VBR) | 10.0–11.5 V @ 1.0 mA - defines precise avalanche initiation threshold for predictable clamping onset |
| Clamping Voltage (VC) | 15.4 V @ 39.0 A - limits voltage seen by downstream circuitry during worst-case 600W surge event |
| Max Reverse Leakage (IR) | ≤5.0 µA @ 9.0 V - negligible standby current draw, critical for battery-powered systems |
| Package | D-FLAT - 2-pin surface-mount outline (4.65 mm × 2.80 mm × 1.10 mm) optimized for space-constrained boards |
Pinout & Package
The P6SMAJ9.0ADF is housed in a polarized D-FLAT package with cathode band marking. The case is molded plastic (UL 94V-0), terminals are matte tin–annealed copper, and weight is ~0.035 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Anode-side connection point for reverse-biased operation | Connected to protected line; conducts during overvoltage to shunt energy to ground |
| 2 (Anode) | Reference/ground return path | Typically tied to system ground plane; completes clamping current path during surge events |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated die construction | Ensures long-term stability of breakdown voltage and low parameter drift across temperature and lifetime |
| 600W peak pulse power rating | Supports robust protection against IEC 61000-4-5 Level 4 (4 kV/2 Ω) surges in industrial environments |
| Low-profile D-FLAT package | Reduces board area by >30% vs. SMA while maintaining thermal performance via optimized copper pad layout |
| RoHS-compliant, halogen-free "Green" construction | Meets IPC-1752A material declaration requirements and supports eco-design compliance for global markets |
Applications
| Industrial PLC I/O Protection | Automotive Body Control Module |
|---|---|
Use Scenario: Protecting 24 V DC digital input channels in programmable logic controllers from induced surges on factory floor wiring. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between field input and microcontroller GPIO, clamping transients before they reach level-shifting or isolation circuitry. Use Value: Clamps 600W surges to ≤15.4 V, ensuring MCU IO remains within absolute maximum ratings even during 4 kV line-to-ground surges per IEC 61000-4-5. | Use Scenario: Safeguarding LIN bus transceiver power pins against load dump and jump-start transients in vehicle door modules. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 12 V supply rail feeding LIN PHY, positioned upstream of LDO regulator. Use Value: Withstands 60 A surge current (8.3 ms half-sine) and maintains <5 µA leakage at 9 V, minimizing quiescent current impact on battery drain. |
| Telecom Power Supply Input | Medical Diagnostic Equipment Interface |
Use Scenario: Secondary surge protection on AC/DC adapter output rails feeding telecom base station backplane logic. IC Role / Device Role / Timing Role: Final-stage TVS on 5 V or 12 V distribution net, complementing upstream MOV and filter stages. Use Value: Fast <1 ns response captures high-frequency edge components of fast-rising transients, reducing stress on downstream DC-DC converters. | Use Scenario: ESD protection on analog sensor inputs (e.g., temperature, pressure) in portable ultrasound or patient monitor front-ends. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF typical at 0 V) shunt device placed directly at connector entry point. Use Value: ≤5 µA leakage preserves signal integrity in high-impedance sensor paths; 15.4 V clamping prevents latch-up in precision op-amp front-ends. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ9.0A | Same 9.0 V VRWM and 15.4 V VC, but SMB package (larger footprint, higher RθJA = 135 °C/W) | Less suitable for ultra-dense layouts; better thermal margin on minimal copper | Select when board space allows larger package and thermal relief is prioritized over miniaturization |
| 1.5SMC9.0A | Same electrical specs but SMC package (7.1 mm × 6.2 mm); 1500 W rating, not 600 W | Over-specified for most 600W use cases; higher cost and volume | Choose only if legacy SMC footprint reuse or higher surge margin is required despite size penalty |
Compared with SMBJ9.0A and 1.5SMC9.0A, P6SMAJ9.0ADF delivers identical clamping performance in a 40% smaller footprint than SMB and 65% smaller than SMC, enabling tighter routing near connectors while maintaining full IEC 61000-4-5 compliance on standard FR-4 layouts.
Availability
P6SMAJ9.0ADF is available at Aetrix Electronics and suitable for industrial automation, automotive electronics, and medical device design requiring stable component supply and RoHS-compliant surge protection.
Supply support for P6SMAJ9.0ADF 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.
The P6SMAJ series belongs to Diodes' transient voltage suppressor portfolio, engineered specifically for compact, high-power-density board-level ESD and surge protection where low profile and consistent clamping are critical.
FAQ
What is the maximum operating temperature for P6SMAJ9.0ADF?
The P6SMAJ9.0ADF has an operating and storage temperature range of –55 °C to +150 °C. Its junction-to-ambient thermal resistance is 115 °C/W on a 1" × 1" 2 oz copper pad, meaning it can safely dissipate 600 W pulses only under strict thermal conditions - continuous power dissipation is limited to 1.5 W at TL = +75 °C.
Is P6SMAJ9.0ADF bidirectional or unidirectional?
P6SMAJ9.0ADF is a unidirectional TVS diode, indicated by its single cathode band marking and asymmetric IV curve. It protects against positive transients on the cathode side relative to anode (ground), and does not conduct during negative excursions - unlike bidirectional variants such as P6SMBJ9.0CA.
How does the D-FLAT package affect PCB layout?
The D-FLAT package requires a specific pad layout: 0.2" × 0.25" copper pad for optimal thermal performance (RθJA = 92 °C/W). Its 4.65 mm × 2.80 mm footprint and 1.10 mm height enable high-density placement near connectors or ICs, but solder mask-defined pads are recommended to avoid tombstoning due to its low mass and two-terminal symmetry.
Can P6SMAJ9.0ADF replace P6KE9.0A in existing designs?
No - P6KE9.0A is through-hole (DO-15) with different thermal and mechanical behavior. While both share 9.0 V VRWM and similar clamping, P6SMAJ9.0ADF's D-FLAT package demands revised land patterns, reflow profiles, and thermal validation. Direct replacement requires PCB redesign and surge testing per IEC 61000-4-5 to confirm equivalent clamping performance under actual board thermal conditions.
P6SMAJ9.0ADF 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):
- 9V
- Voltage - Breakdown (Min):
- 10V
- Voltage - Clamping (Max) @ Ipp:
- 15.4V
- Current - Peak Pulse (10/1000µs):
- 39A
- 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
P6SMAJ9.0ADF FAQ
1.How can I place an order for P6SMAJ9.0ADF through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMAJ9.0ADF 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 P6SMAJ9.0ADF reliable?
The price and inventory of P6SMAJ9.0ADF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMAJ9.0ADF is usually 5 days.
3.What payment methods are accepted for P6SMAJ9.0ADF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMAJ9.0ADF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMAJ9.0ADF?
P6SMAJ9.0ADF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMAJ9.0ADF 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 P6SMAJ9.0ADF?
For technical support, including P6SMAJ9.0ADF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMAJ9.0ADF requirements.
6.How does Aetrix verify that P6SMAJ9.0ADF is sourced from the original manufacturer or authorized distributors?
All P6SMAJ9.0ADF 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 P6SMAJ9.0ADF meets industry standards.
7.What is the process for return or replacement of P6SMAJ9.0ADF?
All P6SMAJ9.0ADF units undergo pre-shipment inspection (PSI). If there is an issue with P6SMAJ9.0ADF, 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 P6SMAJ9.0ADF part is unused and in its original packaging.
Return procedure for P6SMAJ9.0ADF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMAJ9.0ADF Tags
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ESD9B5.0ST5G
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