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Diodes Incorporated P6SMAJ54ADF
- Part No.:
- P6SMAJ54ADF
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- 2-SMD, Flat Leads
- Datasheet:
-
P6SMAJ54ADF.pdf
- Description:
- TVS DIODE 54VWM 87.1VC D-FLAT
- Quantity:
- Payment:
- Shipping:
Inventory:5,428
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Product details
Overview
P6SMAJ54ADF 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 54.0 V, breakdown voltage range of 60.0–69.0 V at 1.0 mA test current, clamping voltage of 87.1 V at 6.9 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 P6SMAJ54ADF datasheet, P6SMAJ54ADF pinout, P6SMAJ54ADF application, or P6SMAJ54ADF equivalent, key selection criteria include clamping voltage margin relative to protected IC VMAX, thermal resistance under pulsed surge conditions, IPP derating above +25°C ambient, 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 VBR tolerance (±5% typical) and low leakage (<1.0 µA at VRWM), while the D-FLAT package provides low thermal resistance (RθJT = 57 °C/W on 0.4" × 0.5" copper pad) for reliable energy dissipation during 10/1000 µs transients.
The device complies with IEC 61000-4-2 (ESD) and IEC 61000-4-4 (EFT) immunity standards when applied with proper PCB layout. Its fast response time (<1.0 ns) and 600 W peak pulse power rating enable protection of downstream MOSFET gates, microcontroller I/O pins, and CAN/LIN bus transceivers against lightning-induced surges and inductive switching spikes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600 W - sustains single 10/1000 µs surge without failure under defined thermal mounting conditions |
| Reverse Standoff Voltage (VRWM) | 54.0 V - maximum continuous DC or RMS voltage before significant leakage begins |
| Breakdown Voltage (VBR) | 60.0–69.0 V @ 1.0 mA - defines precise avalanche initiation threshold for predictable clamping onset |
| Clamping Voltage (VC) | 87.1 V @ 6.9 A IPP - limits voltage seen by protected circuit during worst-case transient event |
| Peak Pulse Current (IPP) | 6.9 A - maximum non-repetitive surge current the device can safely divert at rated VC |
| Junction-to-Terminal RθJT | 57 °C/W - enables effective heat transfer to PCB copper when mounted on 0.4" × 0.5" 2 oz pad |
| Operating Temperature | −55 to +150 °C - supports deployment in under-hood automotive and industrial motor drive environments |
Pinout & Package
Package: D-FLAT - low-profile surface-mount package (4.65 mm × 2.80 mm × 1.10 mm max), molded plastic case rated UL 94V-0, cathode band polarity indicator, matte tin–annealed copper leadframe.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Transient current sink node | Connected to protected line; conducts avalanche current to ground during overvoltage events |
| 2 (Anode) | Reference / return path | Typically tied to system ground or low-impedance return plane to complete clamping path |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated die construction | Ensures long-term VBR stability and low parameter drift across temperature and lifetime |
| 600 W peak pulse rating | Provides robust protection against high-energy transients such as ISO 7637-2 Pulse 5a (load dump) |
| D-FLAT low-profile package | Reduces board area by >40% vs. SMA; compatible with standard pick-and-place and reflow profiles |
| RoHS-compliant & halogen-free | Meets EU Directive 2011/65/EU and Diodes Inc.'s "Green" definition (<900 ppm Br/Cl, <1000 ppm Sb) |
| Fast response time | <1.0 ns turn-on delay ensures clamping occurs before sensitive downstream components experience overstress |
Applications
| Industrial Power Supply Protection | Automotive Body Control Module (BCM) |
|---|---|
|
Use Scenario: Protecting 48 V DC input rails in programmable logic controllers against load dump and EFT bursts. IC Role / Device Role: Unidirectional shunt TVS placed between input rail and chassis ground. Use Value: Clamps transients to ≤87.1 V, maintaining safe margin below 100 V-rated input capacitors and MOSFETs. |
Use Scenario: Safeguarding LIN bus transceiver supply pins in door module ECUs exposed to battery voltage fluctuations. IC Role / Device Role: Primary overvoltage clamp on VCC line upstream of regulator IC. Use Value: Limits voltage excursions to <87.1 V during 12 V system load dump, preventing regulator latch-up or burnout. |
| Telecom DC Feeder Line Protection | Motor Drive Gate Driver Supply Protection |
|
Use Scenario: Shielding PoE-powered remote units from induced surges on 57 V DC feeder lines. IC Role / Device Role: Secondary-level TVS on DC input stage before DC/DC converter. Use Value: Withstands repeated 6.9 A pulses per IEC 61000-4-5 Level 3, ensuring field reliability over 10-year service life. |
Use Scenario: Securing isolated gate driver bias supply (e.g., 15 V) in 3-phase inverter drives. IC Role / Device Role: Fast-acting clamp on auxiliary supply rail feeding high-side driver ICs. Use Value: Sub-ns response prevents gate oxide damage during IGBT/MOSFET switching-induced ringing and cross-talk. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ54A | Same VRWM (54 V), higher VC (88.0 V @ 6.8 A), SMB package (larger footprint, higher RθJA) | Less suitable for ultra-dense layouts; better thermal mass for lower-frequency surge repetition | Select when board space allows larger package and higher steady-state power handling is needed |
| 1.5SMC54A | Same VRWM (54 V), identical VC (87.1 V), but SMC package (7.1 mm × 6.2 mm) and 1500 W rating | Over-specified for 600 W use cases; introduces unnecessary cost and volume in compact designs | Choose only if legacy SMC footprint reuse or future-proofing for higher-energy threats is required |
Compared with SMBJ54A and 1.5SMC54A, P6SMAJ54ADF delivers optimal balance of surge capability, thermal performance, and miniaturization - enabling protection in space-constrained automotive and industrial PCBs without sacrificing clamping precision or reliability.
Availability
P6SMAJ54ADF is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, telecom DC feeder lines, and motor drive gate driver supply protection requiring stable component supply and full RoHS/halogen-free compliance.
Supply support for P6SMAJ54ADF 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 suppression portfolio, engineered specifically for high-reliability, surface-mount overvoltage protection in automotive, industrial, and communications equipment where space, thermal efficiency, and regulatory compliance are critical.
FAQ
What is the maximum clamping voltage of P6SMAJ54ADF under standard test conditions?
The maximum clamping voltage (VC) is 87.1 V, measured at a peak pulse current (IPP) of 6.9 A using the standardized 10/1000 µs double-exponential waveform per IEC 61000-4-5. This value is guaranteed across the full operating temperature range and represents the upper limit of voltage imposed on the protected circuit during surge events.
Can P6SMAJ54ADF be used in bidirectional protection configurations?
No - P6SMAJ54ADF is a unidirectional TVS diode with anode-cathode polarity marking and specified only for reverse-biased operation. For bidirectional protection (e.g., AC lines or differential data buses), a dedicated bidirectional part such as P6SMBJ54CA must be selected, as this device lacks symmetrical breakdown characteristics.
What is the thermal resistance of P6SMAJ54ADF when mounted on a standard FR-4 PCB?
When mounted on a 0.4" × 0.5" 2 oz copper pad per JESD51-3, the typical junction-to-terminal thermal resistance (RθJT) is 57 °C/W. This value enables accurate thermal modeling of power dissipation during repetitive surge events and informs minimum copper area requirements for sustained reliability.
Does P6SMAJ54ADF meet automotive qualification standards such as AEC-Q200?
No - P6SMAJ54ADF is not AEC-Q200 qualified. While it operates across −55 to +150 °C and is widely used in automotive subsystems (e.g., BCMs), formal qualification requires additional stress testing (temperature cycling, humidity bias, etc.) not performed for this industrial-grade part. For AEC-Q200-compliant alternatives, consult Diodes' Automotive TVS portfolio (e.g., D3SB54).
P6SMAJ54ADF 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):
- 54V
- Voltage - Breakdown (Min):
- 60V
- Voltage - Clamping (Max) @ Ipp:
- 87.1V
- Current - Peak Pulse (10/1000µs):
- 6.9A
- 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
P6SMAJ54ADF FAQ
1.How can I place an order for P6SMAJ54ADF through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMAJ54ADF 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 P6SMAJ54ADF reliable?
The price and inventory of P6SMAJ54ADF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMAJ54ADF is usually 5 days.
3.What payment methods are accepted for P6SMAJ54ADF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMAJ54ADF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMAJ54ADF?
P6SMAJ54ADF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMAJ54ADF 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 P6SMAJ54ADF?
For technical support, including P6SMAJ54ADF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMAJ54ADF requirements.
6.How does Aetrix verify that P6SMAJ54ADF is sourced from the original manufacturer or authorized distributors?
All P6SMAJ54ADF 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 P6SMAJ54ADF meets industry standards.
7.What is the process for return or replacement of P6SMAJ54ADF?
All P6SMAJ54ADF units undergo pre-shipment inspection (PSI). If there is an issue with P6SMAJ54ADF, 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 P6SMAJ54ADF part is unused and in its original packaging.
Return procedure for P6SMAJ54ADF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMAJ54ADF Tags
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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