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Vishay General Semiconductor - Diodes Division P4SMA540AHE3_ALL
- Part No.:
- P4SMA540AHE3_ALL
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA540AHE3_ALL.pdf
- Description:
- TVS DIODE 459VWM 740VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,945
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Product details
Overview
P4SMA540AHE3_ALL 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), and 740 V maximum clamping voltage (VC) at 0.41 A peak pulse current (IPPM). It delivers 400 W peak pulse power (10/1000 µs waveform) and is AEC-Q101 qualified for automotive-grade reliability in high-voltage transient protection circuits.
For engineers reviewing the P4SMA540AHE3_ALL datasheet, P4SMA540AHE3_ALL pinout, P4SMA540AHE3_ALL application, or P4SMA540AHE3_ALL equivalent, key selection criteria include its 459 V working voltage, 740 V clamping performance under surge, unidirectional polarity with cathode band marking, and suitability for protecting high-voltage DC bus lines, industrial power supplies, and automotive battery-fed systems against lightning-induced transients and load dump events.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VWM (459 V), it enters avalanche breakdown near VBR (513–567 V) and clamps transient energy to ≤740 V at IPPM. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and fast response (<1 ns).
Designed for high-voltage DC applications, it features low incremental surge resistance, thermal resistance RθJA = 120 °C/W, and operates across –65 °C to +150 °C junction temperature. The SMA package supports automated placement and meets MSL level 1 (260 °C peak reflow).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 513 V / 567 V at 1.0 mA test current - defines precise avalanche onset range for reliable overvoltage triggering |
| VWM | 459 V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM | 740 V at 0.41 A - clamping voltage during 10/1000 µs surge, limiting protected circuit stress |
| PPPM | 400 W - peak pulse power handling capability under standardized transient waveform |
| IPPM | 0.41 A - peak pulse current corresponding to VC, used to size PCB copper pads per spec |
| Leakage ID @ VWM | <1.0 µA - ultra-low reverse leakage preserves efficiency in high-impedance bias networks |
| Junction Temp Range | –65 °C to +150 °C - enables operation in under-hood automotive and industrial ambient environments |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, molded plastic case with matte tin-plated leads; cathode indicated by band on body; compliant with UL 94 V-0.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side of protected line; conducts only during forward surge (e.g., reverse polarity fault) |
| Cathode | Avalanche clamping terminal | Connected to higher-potential side; initiates controlled breakdown when reverse voltage exceeds VWM |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control units and battery management systems |
| Glass passivated junction | Ensures long-term stability of VBR and low parameter drift under thermal cycling |
| 400 W peak pulse power (10/1000 µs) | Supports robust protection against IEC 61000-4-5 Level 4 surges in industrial power inputs |
| MSL Level 1 moisture sensitivity | Enables standard SMT reflow without baking, reducing manufacturing overhead |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving system-level immunity |
Applications
| Industrial Power Supply Input Protection | Automotive Battery Line Protection |
|---|---|
|
Use Scenario: Protecting AC/DC converter primary-side rectifier outputs and DC bus rails from lightning-induced surges and switching transients. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed across high-voltage DC output, clamping spikes before they reach downstream regulators or controllers. Use Value: Withstands 400 W pulses and clamps to 740 V, preventing damage to 600 V-rated MOSFETs and electrolytic capacitors in 400–500 V systems. |
Use Scenario: Safeguarding 12 V/24 V automotive electronics connected directly to battery lines exposed to load dump (ISO 7637-2 Pulse 5a) and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional TVS mounted between battery rail and ground, absorbing reverse-energy transients up to 740 V peak. Use Value: AEC-Q101 qualification and –65 °C to +150 °C operation ensure reliability in under-hood ECU modules subjected to thermal shock and vibration. |
| Telecom DC Feeder Protection | Renewable Energy Inverter DC Link |
|
Use Scenario: Protecting PoE-powered equipment and telecom base station DC feeder lines from induced surges due to nearby lightning strikes. IC Role / Device Role / Timing Role: High-VWM TVS placed at input stage to clamp common-mode transients while maintaining low standby leakage. Use Value: 459 V VWM allows use on 380–400 V nominal telecom DC distribution systems without false triggering. |
Use Scenario: Shielding photovoltaic inverter DC link capacitors and IGBT gate drivers from grid-switching transients and solar array arc-fault surges. IC Role / Device Role / Timing Role: Standoff-rated TVS across DC+ and DC− rails, providing fail-safe clamping during rapid voltage reversals. Use Value: 740 V VC limits stress on 1200 V IGBTs during 10/1000 µs surges, preserving device lifetime in outdoor installations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ540A | Same VBR (513–567 V), identical SMA package, but rated for 400 W peak power and not AEC-Q101 qualified | Lacks automotive qualification; suitable for commercial/industrial use only | Select when AEC-Q101 is not required and cost optimization is prioritized |
| SMCJ540A | Higher 5.0 kW peak power rating, larger DO-214AB package, same VBR/VWM specs | Requires larger PCB footprint and different thermal pad layout; better for high-energy surges | Choose when system-level surge testing exceeds IEC 61000-4-5 Level 4 or requires >400 W margin |
Compared with SMAJ540A, P4SMA540AHE3_ALL adds AEC-Q101 qualification and tighter process control for automotive deployment; compared with SMCJ540A, it trades peak power headroom for compact SMA footprint and lower assembly cost in space-constrained designs.
Availability
P4SMA540AHE3_ALL is available at Aetrix Electronics and suitable for industrial power supply input protection, automotive battery line protection, telecom DC feeder protection, and renewable energy inverter DC link applications requiring stable component supply, traceable sourcing, and long-term lifecycle support.
Supply support for P4SMA540AHE3_ALL 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, and protection devices with emphasis on reliability, precision, and automotive-grade qualification.
The P4SMA Series targets high-voltage transient suppression in automotive, industrial, and telecom systems, designed to deliver consistent clamping performance, low leakage, and robust surge endurance in surface-mount form factors.
FAQ
What is the breakdown voltage tolerance for P4SMA540AHE3_ALL?
The P4SMA540AHE3_ALL has a specified breakdown voltage (VBR) range of 513 V to 567 V at 1.0 mA test current, representing ±5% tolerance around the nominal 540 V rating. This tight tolerance ensures predictable clamping onset across production lots and temperature extremes, critical for high-voltage system design margins.
Is P4SMA540AHE3_ALL suitable for bidirectional transient protection?
No, P4SMA540AHE3_ALL is a unidirectional TVS diode, identified by the "A" suffix and cathode band marking. For bidirectional protection, Vishay offers the P4SMA540CA variant. Using P4SMA540AHE3_ALL in bidirectional applications would allow forward conduction during negative transients, potentially damaging the device or circuit.
What is the maximum clamping voltage of P4SMA540AHE3_ALL under surge conditions?
The maximum clamping voltage (VC) of P4SMA540AHE3_ALL is 740 V at 0.41 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is guaranteed across temperature and represents the upper limit of voltage seen by protected components during worst-case surge events.
Does P4SMA540AHE3_ALL meet automotive qualification standards?
Yes, P4SMA540AHE3_ALL is AEC-Q101 qualified, as indicated by the "HE3" suffix. It has undergone stress testing for temperature cycling, humidity, mechanical shock, and surge endurance per automotive requirements, making it suitable for engine control units, battery management systems, and other under-hood electronics.
What is the thermal resistance of P4SMA540AHE3_ALL from junction to ambient?
The typical thermal resistance from junction to ambient (RθJA) for P4SMA540AHE3_ALL is 120 °C/W under standard mounting conditions (0.2" × 0.2" copper pads). This value informs derating calculations for continuous power dissipation and must be considered when designing for high-temperature ambient environments.
P4SMA540AHE3_ALL 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA540AHE3_ALL FAQ
1.How can I place an order for P4SMA540AHE3_ALL through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA540AHE3_ALL 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 P4SMA540AHE3_ALL reliable?
The price and inventory of P4SMA540AHE3_ALL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA540AHE3_ALL is usually 5 days.
3.What payment methods are accepted for P4SMA540AHE3_ALL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA540AHE3_ALL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA540AHE3_ALL?
P4SMA540AHE3_ALL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA540AHE3_ALL 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 P4SMA540AHE3_ALL?
For technical support, including P4SMA540AHE3_ALL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA540AHE3_ALL requirements.
6.How does Aetrix verify that P4SMA540AHE3_ALL is sourced from the original manufacturer or authorized distributors?
All P4SMA540AHE3_ALL 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 P4SMA540AHE3_ALL meets industry standards.
7.What is the process for return or replacement of P4SMA540AHE3_ALL?
All P4SMA540AHE3_ALL units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA540AHE3_ALL, 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 P4SMA540AHE3_ALL part is unused and in its original packaging.
Return procedure for P4SMA540AHE3_ALL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA540AHE3_ALL Tags
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