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Diodes Incorporated P6SMAJ45ADF-13
- Part No.:
- P6SMAJ45ADF-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- 2-SMD, Flat Leads
- Datasheet:
-
P6SMAJ45ADF-13.pdf
- Description:
- TVS DIODE 45VWM 72.7VC D-FLAT
- Quantity:
- Payment:
- Shipping:
Inventory:7,399
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Product details
Overview
P6SMAJ45ADF-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 45V reverse standoff voltage, 50–57.5V breakdown range at 1mA, 72.7V clamping voltage at 8.3A 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 P6SMAJ45ADF-13 datasheet, P6SMAJ45ADF-13 pinout, P6SMAJ45ADF-13 application, or P6SMAJ45ADF-13 equivalent, key selection criteria include clamping voltage margin vs. protected IC VDD, thermal resistance under board layout constraints, peak pulse current handling for IEC 61000-4-5 surge compliance, and RoHS/Green status for export-sensitive designs.
Technical Context
This unidirectional TVS diode operates as a fast-acting shunt clamp during transient events, with sub-nanosecond response time and glass-passivated junction for stable leakage performance. Its 1.0µA max reverse leakage at 45V ensures minimal standby power loss in always-on circuits.
The device uses a low-inductance D-FLAT package with cathode band polarity marking and matte tin–annealed copper leadframe for reliable solderability. Thermal resistance is 92°C/W (junction-to-ambient) on a 0.4" × 0.5" 2oz FR-4 pad, enabling sustained 1.5W dissipation at TL = +75°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600W - sustains 10/1000µs surges up to 8.3A without failure per IEC 61000-4-5 Level 4 testing. |
| Reverse Standoff Voltage (VRWM) | 45.0V - maximum continuous DC or RMS voltage before significant leakage; sets upper limit for protected line voltage. |
| Breakdown Voltage (VBR) | 50.0–57.5V @ 1mA - tight distribution ensures predictable turn-on across production lots. |
| Clamping Voltage (VC) | 72.7V @ 8.3A - defines worst-case voltage seen by downstream circuitry during surge event. |
| Max Reverse Leakage (IR) | 1.0µA @ 45V - negligible current draw in normal operation, critical for battery-powered systems. |
| Package | D-FLAT - 4.65mm × 2.80mm footprint with 0.9–1.1mm height; optimized for automated placement and high-density routing. |
Pinout & Package
Package: D-FLAT surface-mount package with cathode band marking; terminals are anode (pin 2) and cathode (pin 1), mounted on FR-4 PCB with recommended 0.2" × 0.25" copper pad for thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode Band) | Transient Current Sink | Connected to protected line; conducts surge current to ground when VLINE exceeds VBR. |
| 2 (Anode) | Reference Node | Tied to system ground or lowest potential node; completes shunt path during overvoltage event. |
Key Features
| Feature | Design Value |
|---|---|
| 600W Peak Pulse Rating | Enables single-device protection against IEC 61000-4-5 4kV surge (line-earth) without derating. |
| Glass-Passivated Junction | Ensures long-term stability of VBR and IR under thermal cycling and humidity exposure. |
| Low Profile D-FLAT Package | Reduces board area by >30% vs. SMA packages while maintaining thermal performance via optimized pad layout. |
| RoHS & Halogen-Free Compliance | Meets EU Directive 2011/65/EU and Diodes Inc.'s "Green" standard (<900ppm Br/Cl, <1000ppm Sb). |
Applications
| Industrial PLC I/O Protection | Automotive Body Control Module |
|---|---|
Use Scenario: Protecting 24V digital input channels in programmable logic controllers from inductive switching transients and ESD. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between field input and optocoupler input stage. Use Value: Clamps 45V-rated inputs to ≤72.7V during 1kV/500A surge, preserving optocoupler CTR and isolation integrity. |
Use Scenario: Safeguarding LIN bus transceiver power pins against load dump and jump-start transients in door module ECUs. IC Role / Device Role / Timing Role: Primary overvoltage clamp on VCC rail upstream of 3.3V LDO regulator. Use Value: Limits voltage excursion to 72.7V during 12V system load dump (ISO 7637-2 Pulse 5a), preventing LDO thermal shutdown. |
| Telecom Power Interface | Medical Equipment DC Input Stage |
Use Scenario: Guarding 48V PoE-powered Ethernet switch ports against lightning-induced surges on data and power lines. IC Role / Device Role / Timing Role: Secondary-level TVS on DC input rail after primary MOV and common-mode choke. Use Value: Provides precise 45V clamping with 1µA leakage, avoiding false triggering in low-power sleep modes. |
Use Scenario: Protecting isolated DC-DC converter inputs in portable diagnostic devices powered from hospital-grade AC adapters. IC Role / Device Role / Timing Role: Final-stage transient suppressor on secondary-side 12V rail feeding analog front-end sensors. Use Value: Ensures <1µA leakage and 72.7V clamping to prevent sensor offset drift and ADC saturation during EFT bursts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ45A-Q | Same 45V VRWM, but 400W rating and SMA package (larger footprint, higher RθJA = 115°C/W). | Lower surge capacity; suitable only for IEC 61000-4-2 ESD, not 4-5 surge. | Select when board space allows larger package and surge requirements are ≤400W. |
| 1.5SMC47A | 47V VRWM, 1500W rating, DO-214AB package; higher clamping (77.0V) and 10× larger footprint. | Over-specified for 45V lines; requires redesign of pad layout and thermal relief. | Choose only if legacy design mandates DO-214AB or surge requirement exceeds 600W. |
Compared with SMAJ45A-Q and 1.5SMC47A, P6SMAJ45ADF-13 delivers optimal balance of 600W surge capability, compact D-FLAT footprint, and 72.7V clamping - making it preferred for space-constrained 24–48V industrial and automotive power rails where thermal management and layout density are critical.
Availability
P6SMAJ45ADF-13 is available at Aetrix Electronics and suitable for industrial PLC I/O protection, automotive body control modules, telecom power interfaces, and medical equipment DC input stages requiring stable component supply and full RoHS/Green compliance.
Supply support for P6SMAJ45ADF-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 operations across Asia and the Americas.
The P6SMAJ series belongs to Diodes' transient voltage suppression portfolio, engineered specifically for high-reliability, space-efficient overvoltage protection in harsh industrial and automotive environments.
FAQ
What is the maximum operating temperature for P6SMAJ45ADF-13?
The device supports continuous operation from –55°C to +150°C junction temperature. At ambient temperatures above +75°C, derating applies per Figure 1: power dissipation must be reduced linearly to zero at +150°C ambient when mounted on the specified 0.4" × 0.5" copper pad.
Does P6SMAJ45ADF-13 meet IEC 61000-4-5 surge immunity standards?
Yes - its 600W peak pulse rating corresponds to a 4kV/2Ω combination wave (Line-Earth) per IEC 61000-4-5 Ed. 3, assuming proper PCB layout with low-inductance grounding and the recommended 0.2" × 0.25" copper pad for thermal and electrical performance.
How does the D-FLAT package improve thermal performance over SMA?
The D-FLAT package achieves 92°C/W junction-to-ambient thermal resistance (vs. 115°C/W for SMA) due to its shorter thermal path and optimized copper pad interface, allowing 1.5W steady-state dissipation at TL = +75°C - critical for high-duty-cycle surge environments.
Is P6SMAJ45ADF-13 suitable for bidirectional signal line protection?
No - it is a unidirectional TVS diode intended for DC power rail protection. For bidirectional signal lines (e.g., RS-485, USB), a symmetric bipolar TVS like P6SMBJ45CA or SMAJ45CA is required to clamp both positive and negative transients.
P6SMAJ45ADF-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):
- 45V
- Voltage - Breakdown (Min):
- 50V
- Voltage - Clamping (Max) @ Ipp:
- 72.7V
- Current - Peak Pulse (10/1000µs):
- 8.3A
- 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
P6SMAJ45ADF-13 FAQ
1.How can I place an order for P6SMAJ45ADF-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMAJ45ADF-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 P6SMAJ45ADF-13 reliable?
The price and inventory of P6SMAJ45ADF-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMAJ45ADF-13 is usually 5 days.
3.What payment methods are accepted for P6SMAJ45ADF-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMAJ45ADF-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMAJ45ADF-13?
P6SMAJ45ADF-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMAJ45ADF-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 P6SMAJ45ADF-13?
For technical support, including P6SMAJ45ADF-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMAJ45ADF-13 requirements.
6.How does Aetrix verify that P6SMAJ45ADF-13 is sourced from the original manufacturer or authorized distributors?
All P6SMAJ45ADF-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 P6SMAJ45ADF-13 meets industry standards.
7.What is the process for return or replacement of P6SMAJ45ADF-13?
All P6SMAJ45ADF-13 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMAJ45ADF-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 P6SMAJ45ADF-13 part is unused and in its original packaging.
Return procedure for P6SMAJ45ADF-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMAJ45ADF-13 Tags
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Diodes Incorporated
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