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Diodes Incorporated P6SMAJ43ADF-13
- Part No.:
- P6SMAJ43ADF-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- 2-SMD, Flat Leads
- Datasheet:
-
P6SMAJ43ADF-13.pdf
- Description:
- TVS DIODE 43VWM 69.4VC D-FLAT
- Quantity:
- Payment:
- Shipping:
Inventory:3,142
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Product details
Overview
P6SMAJ43ADF-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 reverse standoff voltage of 43.0 V, breakdown voltage range 47.8–54.9 V at 1.0 mA test current, clamping voltage of 69.4 V at 8.6 A peak pulse current, and D-FLAT package for space-constrained PCB layouts-used in industrial power supply input stages.
For engineers reviewing the P6SMAJ43ADF-13 datasheet, P6SMAJ43ADF-13 pinout, P6SMAJ43ADF-13 application, or P6SMAJ43ADF-13 equivalent, key selection criteria include clamping voltage margin vs. protected IC's absolute maximum rating, peak pulse current capability under IEC 61000-4-5 surge conditions, thermal resistance to PCB copper pad area, and RoHS-compliant green packaging compliance for automotive and industrial end equipment.
Technical Context
This unidirectional TVS diode operates as a shunt-clamping device that remains high-impedance below 43.0 V reverse standoff voltage and rapidly avalanches above its 47.8 V minimum breakdown threshold. Its glass-passivated junction ensures stable leakage (<1.0 µA at VRWM) and repeatable clamping performance across temperature.
The device responds to transients within picoseconds and handles 600 W non-repetitive peak pulse power per the 10/1000 µs waveform. Thermal resistance is 92 °C/W (junction-to-ambient, small pad) or 57 °C/W (junction-to-terminal), directly linking PCB layout to sustained surge survivability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600 W - sustains single IEC 61000-4-5 surge events without failure |
| Reverse Standoff Voltage | 43.0 V - maximum continuous DC voltage before significant leakage begins |
| Clamping Voltage @ IPP | 69.4 V at 8.6 A - limits downstream voltage during surge to protect 75 V-rated components |
| Breakdown Voltage Range | 47.8–54.9 V @ 1.0 mA - defines reliable avalanche initiation window for design margining |
| Max Reverse Leakage | 1.0 µA @ 43.0 V - negligible standby current impact on low-power systems |
| Package | D-FLAT - 4.65 mm × 2.80 mm footprint with 0.50–1.30 mm height, optimized for automated SMT assembly |
Pinout & Package
Package: D-FLAT surface-mount package with cathode band marking; case material is UL 94V-0 molded plastic; terminals are matte tin annealed over copper leadframe.
| 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 / Ground return | Typically tied to system ground plane; completes current path during clamping event |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile D-FLAT package | Reduces board area by >30% vs. SMA while maintaining 600 W surge rating |
| Glass-passivated die construction | Ensures long-term parameter stability and resistance to humidity-induced degradation |
| Fast response time | Sub-nanosecond turn-on enables protection of high-speed logic and analog interfaces |
| RoHS & Halogen-free compliance | Fulfills IPC-1752A environmental requirements for automotive and industrial OEMs |
Applications
| Industrial PLC I/O Protection | Automotive Body Control Module Inputs |
|---|---|
Use Scenario: 24 V DC sensor inputs exposed to load dump and inductive switching transients in factory automation cabinets. IC Role / Device Role: Primary shunt clamp on field-side signal lines upstream of isolated ADC drivers. Use Value: Clamps 69.4 V surges to prevent damage to 75 V-rated isolation amplifiers and microcontroller GPIOs. | Use Scenario: LIN bus and switched 12 V power inputs in door module ECUs subject to ISO 7637-2 Pulse 1/2a/5a. IC Role / Device Role: First-line transient suppression before local LDO regulators and CAN/LIN transceivers. Use Value: Withstands 8.6 A peak pulses while maintaining <1.0 µA leakage to avoid battery drain in sleep mode. |
| Telecom Power Supply Input | Medical Equipment AC/DC Adapter Interface |
Use Scenario: Secondary-side 48 V DC distribution rail in PoE-powered switches experiencing lightning-induced surges. IC Role / Device Role: Point-of-load TVS on backplane connectors and hot-swap controller inputs. Use Value: 600 W rating supports EN 61000-4-5 Level 4 (4 kV) testing with margin; D-FLAT allows dense layout near connectors. | Use Scenario: Mains-connected external power adapter outputs feeding Class II medical devices with strict leakage limits. IC Role / Device Role: Final-stage overvoltage guard before patient-connected analog front-end circuits. Use Value: 1.0 µA max reverse leakage meets IEC 60601-1 creepage/clearance safety requirements for patient-accessible circuits. |
Availability
P6SMAJ43ADF-13 is available at Aetrix Electronics and suitable for industrial PLC I/O protection, automotive body control modules, and telecom power supply inputs requiring stable component supply and full traceability.
Supply support for P6SMAJ43ADF-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, manufacturing, and sales operations across Asia, Europe, and North America.
The P6SMAJ series belongs to Diodes' transient voltage suppressor portfolio, engineered specifically for robust, cost-effective board-level ESD and surge protection in harsh industrial and automotive environments.
FAQ
What is the polarity configuration of P6SMAJ43ADF-13?
P6SMAJ43ADF-13 is a unidirectional TVS diode with cathode terminal marked by a band. It conducts only during positive transients on the cathode side relative to anode, making it suitable for DC line protection where polarity is fixed and reverse voltage is not expected.
How does P6SMAJ43ADF-13 compare to bidirectional TVS diodes in surge protection?
Unlike bidirectional devices, P6SMAJ43ADF-13 provides lower clamping voltage (69.4 V) for positive transients but offers no protection against negative excursions beyond its forward voltage (~3.5 V). It is selected when circuit polarity is known and tighter clamping margin is required on one polarity.
Can P6SMAJ43ADF-13 be used in parallel for higher surge current handling?
No-parallel connection is not recommended due to mismatch in breakdown voltage (47.8–54.9 V range), which causes uneven current sharing and potential thermal runaway. For higher current, select a single higher-rated device such as P6SMAJ45ADF-13 or use a TVS array with matched characteristics.
What PCB layout practices maximize thermal performance for P6SMAJ43ADF-13?
Use ≥0.2" × 0.25" (5.08 mm × 6.35 mm) 2 oz copper pads per terminal to achieve the 57 °C/W junction-to-terminal thermal resistance. Avoid thermal relief spokes; connect pads directly to internal ground/power planes using multiple vias to reduce transient impedance and improve heat dissipation.
P6SMAJ43ADF-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):
- 43V
- Voltage - Breakdown (Min):
- 47.8V
- Voltage - Clamping (Max) @ Ipp:
- 69.4V
- Current - Peak Pulse (10/1000µs):
- 8.6A
- 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
P6SMAJ43ADF-13 FAQ
1.How can I place an order for P6SMAJ43ADF-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMAJ43ADF-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 P6SMAJ43ADF-13 reliable?
The price and inventory of P6SMAJ43ADF-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMAJ43ADF-13 is usually 5 days.
3.What payment methods are accepted for P6SMAJ43ADF-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMAJ43ADF-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMAJ43ADF-13?
P6SMAJ43ADF-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMAJ43ADF-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 P6SMAJ43ADF-13?
For technical support, including P6SMAJ43ADF-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMAJ43ADF-13 requirements.
6.How does Aetrix verify that P6SMAJ43ADF-13 is sourced from the original manufacturer or authorized distributors?
All P6SMAJ43ADF-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 P6SMAJ43ADF-13 meets industry standards.
7.What is the process for return or replacement of P6SMAJ43ADF-13?
All P6SMAJ43ADF-13 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMAJ43ADF-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 P6SMAJ43ADF-13 part is unused and in its original packaging.
Return procedure for P6SMAJ43ADF-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMAJ43ADF-13 Tags
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