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Diodes Incorporated P6SMAJ12ADF-13
- Part No.:
- P6SMAJ12ADF-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- 2-SMD, Flat Leads
- Datasheet:
-
P6SMAJ12ADF-13.pdf
- Description:
- TVS DIODE 12VWM 19.9VC D-FLAT
- Quantity:
- Payment:
- Shipping:
Inventory:9,843
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Product details
Overview
P6SMAJ12ADF-13 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 12V reverse standoff voltage (VRWM), 13.3–15.3V breakdown range at 1mA, 19.9V clamping voltage at 30.2A peak pulse current, and D-FLAT package for space-constrained PCB layouts-used in industrial power supplies and automotive body control modules.
For engineers reviewing the P6SMAJ12ADF-13 datasheet, P6SMAJ12ADF-13 pinout, P6SMAJ12ADF-13 application, or P6SMAJ12ADF-13 equivalent, key selection criteria include clamping voltage margin vs. protected IC VDD, thermal resistance under pulsed surge conditions, IEC 61000-4-5 compliance readiness, and compatibility with automated SMT assembly on FR-4 boards with 0.2" × 0.25" copper pads.
Technical Context
This unidirectional TVS diode operates as a shunt-clamping device that remains high-impedance below VRWM = 12V and rapidly transitions to low-impedance conduction above VBR (min 13.3V) to limit transient energy. Its glass-passivated junction ensures stable leakage (<1µA at VRWM) and repeatable breakdown behavior across temperature.
The device delivers 600W peak pulse power per 10/1000µs waveform with 30.2A IPP, supported by RθJA = 92°C/W on a 0.4" × 0.5" 2oz copper pad-enabling robust surge handling without external heatsinking in short-duration transients like ESD or inductive switching spikes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600 W - Sustains single 10/1000µs surges up to this level without failure |
| Reverse Standoff Voltage | 12 V - Maximum continuous DC voltage before significant leakage begins |
| Breakdown Voltage Range | 13.3–15.3 V @ 1mA - Confirmed turn-on threshold for clamping initiation |
| Clamping Voltage | 19.9 V @ 30.2A - Maximum voltage seen by protected circuit during rated surge |
| Peak Pulse Current | 30.2 A - Peak current the device safely diverts under 10/1000µs waveform |
| Thermal Resistance JA | 92 °C/W - Measured on 0.4" × 0.5", 2oz FR-4 pad; defines steady-state temp rise at 1.5W |
| Reverse Leakage | ≤1 µA @ 12V - Ensures minimal standby power loss and signal integrity in high-impedance nodes |
Pinout & Package
Package: D-FLAT (low-profile surface-mount package, 4.65mm × 2.80mm × 1.10mm max, cathode-banded polarity).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Transient current sink node | Connected to protected line; conducts surge current to ground when clamped |
| 2 (Anode) | Reference / return path | Typically tied to system ground; completes clamping path during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated die construction | Ensures long-term reliability and consistent VBR stability across humidity and thermal cycling |
| Low-profile D-FLAT package | Reduces board area by >40% vs. SMA; enables placement near connectors or IC power pins |
| 64°C/W junction-to-terminal thermal resistance | Supports localized heat dissipation into copper pour without via arrays or thermal relief cuts |
| Lead-free, halogen-free, RoHS-compliant finish | Meets IPC-J-STD-020 Level 1 moisture sensitivity and automotive ELV Directive requirements |
| Fast response time (<1ps) | Clamps transients before sensitive downstream logic or analog circuits experience overstress |
Applications
| Industrial PLC I/O Protection | Automotive Body Control Module |
|---|---|
Use Scenario: Protecting 24V digital input channels from inductive kickback and load dump transients in programmable logic controllers. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between field input and microcontroller GPIO, clamping surges before they reach level-shifting or isolation stages. Use Value: Limits voltage to ≤19.9V during 30A transients, preserving 3.3V/5V interface ICs rated for 20V absolute maximum. |
Use Scenario: Safeguarding LIN bus transceivers and sensor supply rails against battery reverse connection and jump-start spikes. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 12V rail feeding door module MCUs and Hall-effect sensors. Use Value: Withstands 600W pulses per ISO 7637-2 Pulse 1/2a/5a, enabling compliance without additional filtering components. |
| Telecom Power Interface | Medical Diagnostic Equipment |
Use Scenario: Front-end protection of PoE-powered Ethernet switches against lightning-induced surges on 48V DC input. IC Role / Device Role / Timing Role: First-stage TVS on primary DC input before DC-DC converters and hot-swap controllers. Use Value: Clamps 10/1000µs surges to 19.9V while maintaining <1µA leakage-critical for low-power standby modes. |
Use Scenario: Shielding patient-connected analog front-ends (ECG, EEG) from ESD and defibrillator recovery transients. IC Role / Device Role / Timing Role: Secondary protection after gas discharge tube (GDT), limiting residual clamping voltage to safe levels for precision amplifiers. Use Value: 19.9V clamping ensures amplifier inputs remain within ±20V absolute rating, preventing latch-up or parametric shift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ12A-Q | Same VRWM (12V), but higher clamping voltage (21.2V @ 28.3A); RθJA = 115°C/W on larger pad | Lower peak current rating reduces margin for IEC 61000-4-5 Level 4 testing | Select when cost sensitivity outweighs clamping margin; verify thermal derating on small pads |
| 1.5SMC12A | Higher power rating (1500W), larger SMC package (7.1mm × 6.2mm); clamping 20.1V @ 74.6A | Requires 3× board area; better suited for primary AC/DC input protection than secondary DC rails | Choose for higher-energy surge environments where board space allows and lower clamping voltage isn't critical |
Compared with SMAJ12A-Q and 1.5SMC12A, P6SMAJ12ADF-13 offers optimal balance of compact D-FLAT footprint, 19.9V clamping, and 30.2A surge capacity-making it preferred for space-limited 12V DC distribution networks where thermal management is constrained.
Availability
P6SMAJ12ADF-13 is available at Aetrix Electronics and suitable for industrial PLC I/O protection, automotive body control modules, and telecom power interface designs requiring stable component supply and full traceability through production ramp.
Supply support for P6SMAJ12ADF-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.
P6SMAJ12ADF-13 belongs to the P6SMAJ series of 600W surface-mount TVS diodes engineered specifically for space-efficient, high-surge-capacity protection in 12V–85V DC systems-targeting applications demanding low clamping voltage and JEDEC-compliant SMT assembly.
FAQ
What is the maximum operating temperature for P6SMAJ12ADF-13?
The device supports continuous operation from –55°C to +150°C junction temperature. At ambient temperatures above +75°C, derating applies: power dissipation drops linearly to zero at +150°C, per the pulse derating curve in Figure 1 of DS38930 Rev. 2–2.
Can P6SMAJ12ADF-13 be used for bidirectional transient suppression?
No-it is a unidirectional TVS diode with cathode-anode polarity. For bidirectional protection, a symmetric device such as P6SMBJ12CA or two back-to-back unidirectional units would be required; using P6SMAJ12ADF-13 in reverse bias risks permanent breakdown above 12V.
How does the D-FLAT package affect solder joint reliability?
The D-FLAT's flat, dual-terminal design eliminates lead stress and provides uniform thermal expansion matching with FR-4 PCBs. Its matte tin annealed finish ensures consistent wetting and intermetallic formation, meeting IPC-A-610 Class 2/3 requirements for automotive and industrial assemblies.
Is P6SMAJ12ADF-13 compliant with AEC-Q200?
No-this part is not AEC-Q200 qualified. Diodes Incorporated offers the automotive-grade P6SMAJ12AFQ-13 variant (with extended temperature screening and PPAP documentation) for AEC-Q200-compliant designs; P6SMAJ12ADF-13 is intended for commercial/industrial use only.
P6SMAJ12ADF-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- 2-SMD, Flat Leads
- Series:
- SMAJ
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 12V
- Voltage - Breakdown (Min):
- 13.3V
- Voltage - Clamping (Max) @ Ipp:
- 19.9V
- Current - Peak Pulse (10/1000µs):
- 30.2A
- 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
P6SMAJ12ADF-13 FAQ
1.How can I place an order for P6SMAJ12ADF-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMAJ12ADF-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 P6SMAJ12ADF-13 reliable?
The price and inventory of P6SMAJ12ADF-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMAJ12ADF-13 is usually 5 days.
3.What payment methods are accepted for P6SMAJ12ADF-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMAJ12ADF-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMAJ12ADF-13?
P6SMAJ12ADF-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMAJ12ADF-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 P6SMAJ12ADF-13?
For technical support, including P6SMAJ12ADF-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMAJ12ADF-13 requirements.
6.How does Aetrix verify that P6SMAJ12ADF-13 is sourced from the original manufacturer or authorized distributors?
All P6SMAJ12ADF-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 P6SMAJ12ADF-13 meets industry standards.
7.What is the process for return or replacement of P6SMAJ12ADF-13?
All P6SMAJ12ADF-13 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMAJ12ADF-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 P6SMAJ12ADF-13 part is unused and in its original packaging.
Return procedure for P6SMAJ12ADF-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMAJ12ADF-13 Tags
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