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Vishay General Semiconductor - Diodes Division P4SMA540A-M3/5A
- Part No.:
- P4SMA540A-M3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA540A-M3/5A.pdf
- Description:
- TVS DIODE 459VWM 740VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,631
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Product details
Overview
P4SMA540A-M3/5A from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, rated for 540 V breakdown voltage (VBR = 513–567 V at IT = 1.0 mA), 459 V stand-off voltage (VWM), 740 V clamping voltage (VC) at 0.41 A peak pulse current (IPPM), and 400 W peak pulse power (10/1000 µs waveform). It protects MOSFETs and sensor signal lines in industrial power supplies against inductive switching transients.
For engineers reviewing the P4SMA540A-M3/5A datasheet, P4SMA540A-M3/5A pinout, P4SMA540A-M3/5A application, or P4SMA540A-M3/5A equivalent, this page delivers verified electrical parameters, thermal derating behavior, AEC-Q101 qualification status, halogen-free RoHS compliance (M3 suffix), and real-world clamping performance under standardized surge conditions.
Technical Context
This unidirectional TVS operates as a voltage-clamped shunt protector: when reverse voltage exceeds VWM = 459 V, it avalanches to clamp transient energy at VC = 740 V with low incremental surge resistance. Its glass-passivated junction ensures stable breakdown and fast response (<1 ns) to ESD and lightning-induced surges.
Designed for surface-mount assembly on 5.0 mm × 5.0 mm copper pads, it delivers 400 W peak pulse power (derated to 300 W above 91 V), supports 40 A non-repetitive forward surge (IFSM), and maintains operation from −65 °C to +150 °C (TJ). The M3 suffix confirms halogen-free, RoHS-compliant construction meeting JESD201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 513 V / 567 V at IT = 1.0 mA - defines reliable avalanche initiation threshold under test conditions |
| VWM | 459 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 740 V at IPPM = 0.41 A (10/1000 µs) - actual clamping voltage limiting downstream circuit stress |
| PPPM | 400 W (10/1000 µs) - peak transient energy absorption capacity on standard PCB pad layout |
| RθJA | 120 °C/W - thermal resistance from junction to ambient, critical for power derating above 25 °C |
| TJ max. | +150 °C - maximum junction temperature enabling use in high-ambient industrial environments |
| AEC-Q101 | Qualified (suffix B variant) - validated for automotive-grade reliability including temperature cycling and HTRB |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads solderable per J-STD-002 and JESD22-B102. Cathode indicated by band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to system ground or lower-potential rail in unidirectional protection configuration |
| Cathode | Avalanche clamping terminal | Connected to protected line; conducts reverse surge current to ground when VWM exceeded |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Enables robust protection of 400 V+ DC bus lines against IEC 61000-4-5 Level 4 surges without external heatsinking |
| Glass passivated junction | Ensures stable VBR tolerance (±5 %) and long-term reliability under repeated transient stress |
| MSL Level 1 (260 °C peak) | Supports lead-free reflow without popcorn cracking or delamination during automated SMT assembly |
| Halogen-free & RoHS-compliant (M3) | Fulfills environmental compliance requirements for industrial and automotive end equipment |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, reducing stress on downstream MOSFET gate oxides |
Applications
| Industrial Power Supply Protection | Automotive Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Protecting auxiliary 48 V DC-DC converter outputs against load dump and inductive kickback in factory automation controllers. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between output rail and ground, clamping transients within 1 ns. Use Value: Limits voltage excursion to ≤740 V, preventing damage to downstream 600 V-rated MOSFETs and optocouplers. |
Use Scenario: Safeguarding LIN bus signal lines in engine control modules exposed to ISO 7637-2 Pulse 5a transients. IC Role / Device Role / Timing Role: Standoff voltage (459 V) exceeds automotive battery system max (36 V), enabling direct placement on signal path. Use Value: Clamps 100 V/100 ms transients to <740 V while maintaining <1 µA leakage at 36 V, preserving signal integrity. |
| Telecom AC/DC Front-End Protection | Renewable Energy Inverter DC Link Protection |
|
Use Scenario: Shielding rectifier output stages in telecom base station PSUs from lightning-induced surges on AC mains input. IC Role / Device Role / Timing Role: Mounted across bulk capacitor terminals to absorb differential-mode surges up to 4 kV (IEC 61000-4-5). Use Value: Withstands 400 W pulses without degradation, eliminating need for series impedance or additional crowbar circuits. |
Use Scenario: Protecting IGBT gate drivers in solar string inverters from voltage spikes generated during rapid PV array disconnection. IC Role / Device Role / Timing Role: Placed across driver supply rails (VDD/GND) to clamp transients induced by parasitic inductance in high-di/dt switching. Use Value: Fast response (<1 ns) and low VC/IPPM ratio prevent false triggering or latch-up in isolated gate drivers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ540A | Same VBR range (513–567 V), but SMB package (DO-214AA); 600 W PPPM, higher IPPM (0.67 A), RθJA = 90 °C/W | Better thermal performance and higher surge rating, but 25 % larger footprint than SMA | Select SMBJ540A when board space allows and higher single-pulse robustness is required. |
| 1.5SMC540A | Same VBR and VWM, but SMC package (DO-214AB); 1500 W PPPM, IPPM = 2.05 A, RθJA = 60 °C/W | Three-times higher peak power handling; suited for primary-side AC line protection where surge energy exceeds 400 W | Choose 1.5SMC540A for front-end mains protection where IEC 61000-4-5 Level 5 compliance is mandatory. |
Compared with SMBJ540A and 1.5SMC540A, P4SMA540A-M3/5A offers the smallest footprint (SMA) and halogen-free compliance out-of-box, making it optimal for space-constrained industrial DC bus nodes where 400 W clamping suffices and AEC-Q101 qualification is not required.
Availability
P4SMA540A-M3/5A is available at Aetrix Electronics and suitable for industrial power supplies, automotive sensor interfaces, telecom rectifier stages, and renewable energy inverter subsystems requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P4SMA540A-M3/5A 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The P4SMA Series targets cost-sensitive, high-volume transient protection needs in consumer, industrial, and automotive systems-designed for automated SMT assembly, low-profile layouts, and robust surge immunity without compromising thermal or electrical stability.
FAQ
What is the maximum clamping voltage of P4SMA540A-M3/5A under standard test conditions?
The maximum clamping voltage (VC) of P4SMA540A-M3/5A is 740 V, measured at a peak pulse current (IPPM) of 0.41 A using the standardized 10/1000 µs waveform. This value reflects the actual voltage seen by protected circuitry during a surge event and is guaranteed across the full operating temperature range per Vishay Document 88367.
Is P4SMA540A-M3/5A qualified for automotive applications?
P4SMA540A-M3/5A itself is not AEC-Q101 qualified; however, the P4SMA540AHM3_B variant (with B revision code) is AEC-Q101 qualified. The M3 suffix indicates halogen-free RoHS compliance, but automotive qualification requires the explicit "B" suffix and associated test documentation. Always verify ordering code suffixes for automotive use cases.
What does the "/5A" in P4SMA540A-M3/5A indicate?
The "/5A" denotes the packaging configuration: 13-inch diameter plastic tape and reel containing 7500 units. This contrasts with "/61", which specifies a 7-inch reel with 1800 units. Both are compatible with standard SMT pick-and-place equipment, but /5A enables higher-volume automated assembly with fewer reel changes.
How does the thermal resistance of P4SMA540A-M3/5A affect its power derating?
P4SMA540A-M3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W. At ambient temperatures above 25 °C, its peak pulse power must be linearly derated-e.g., at 75 °C ambient, usable PPPM drops to ~200 W. Derating curves are provided in Figure 2 of Vishay Document 88367 and must be applied for sustained surge duty cycles.
Can P4SMA540A-M3/5A be used in bidirectional protection circuits?
No-P4SMA540A-M3/5A is strictly unidirectional, as indicated by the "A" suffix (versus "CA" for bidirectional variants). Its cathode band marking and asymmetric IV curve mean it only clamps in reverse bias. For bidirectional protection at similar voltage levels, use P4SMA540CA-M3/5A, which has symmetric breakdown in both polarities and no polarity marking.
P4SMA540A-M3/5A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- P4SMA, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 459V
- Voltage - Breakdown (Min):
- 513V
- Voltage - Clamping (Max) @ Ipp:
- 740V
- Current - Peak Pulse (10/1000µs):
- 410mA
- Power - Peak Pulse:
- 300W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA540A-M3/5A FAQ
1.How can I place an order for P4SMA540A-M3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA540A-M3/5A 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 P4SMA540A-M3/5A reliable?
The price and inventory of P4SMA540A-M3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA540A-M3/5A is usually 5 days.
3.What payment methods are accepted for P4SMA540A-M3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA540A-M3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA540A-M3/5A?
P4SMA540A-M3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA540A-M3/5A 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 P4SMA540A-M3/5A?
For technical support, including P4SMA540A-M3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA540A-M3/5A requirements.
6.How does Aetrix verify that P4SMA540A-M3/5A is sourced from the original manufacturer or authorized distributors?
All P4SMA540A-M3/5A 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 P4SMA540A-M3/5A meets industry standards.
7.What is the process for return or replacement of P4SMA540A-M3/5A?
All P4SMA540A-M3/5A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA540A-M3/5A, 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 P4SMA540A-M3/5A part is unused and in its original packaging.
Return procedure for P4SMA540A-M3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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