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Vishay General Semiconductor - Diodes Division P4SMA540AHE3_A/I
- Part No.:
- P4SMA540AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA540AHE3_A/I.pdf
- Description:
- TVS DIODE 459VWM 740VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,398
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Product details
Overview
P4SMA540AHE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for high-voltage transient protection in automotive and industrial power rails. It features a 540 V breakdown voltage (VBR = 513–567 V at IT = 1.0 mA), 459 V maximum standoff voltage (VWM), 740 V clamping voltage (VC) at 0.41 A peak pulse current, 400 W peak pulse power (10/1000 µs), and AEC-Q101 qualification - deployed to safeguard MOSFETs and DC-link circuits against lightning-induced surges and inductive switching transients.
For engineers reviewing the P4SMA540AHE3_A/I datasheet, P4SMA540AHE3_A/I pinout, P4SMA540AHE3_A/I application, or P4SMA540AHE3_A/I equivalent, this page delivers verified electrical parameters, package dimensions, automotive-grade reliability context, clamping performance under standardized surge waveforms, and validated alternative options for high-voltage rail protection design.
Technical Context
This TVS operates as a unidirectional avalanche diode with cathode-band polarity marking, optimized for clamping fast-rising transients on positive-rail systems. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at VWM), while its SMA (DO-214AC) package supports automated SMT placement and meets MSL Level 1 reflow requirements (260 °C peak).
The device delivers 400 W peak pulse power per 10/1000 µs waveform up to 25 °C, derating linearly above TA = 25 °C with RθJA = 120 °C/W. It sustains 40 A non-repetitive forward surge current (8.3 ms half-sine) and operates across -65 °C to +150 °C junction temperature range - enabling use in under-hood automotive modules and industrial motor drives.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 513 V / 567 V at IT = 1.0 mA - defines precise avalanche onset threshold for reliable overvoltage triggering |
| VWM | 459 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 740 V at 0.41 A - clamped voltage during full-rated 10/1000 µs surge, limiting downstream stress |
| PPPM | 400 W - peak transient energy absorption capability under standard lightning/surge test waveform |
| IFSM | 40 A - single half-sine surge current rating (8.3 ms), supporting inductive load switch-off events |
| TJ Range | -65 °C to +150 °C - enables deployment in engine control units and industrial power converters |
| AEC-Q101 | Qualified - certified for automotive electronics per stress-test requirements including HTGB, HTRB, and TCT |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, molded epoxy case meeting UL 94 V-0 flammability rating; matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards; cathode identified by band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or return path; completes conduction path during transient clamp event |
| Cathode | High-side connection point | Connected to protected line (e.g., 48 V rail); avalanche conduction initiates when VAK ≥ VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive under-hood applications including engine management and battery disconnect units |
| 400 W peak pulse power (10/1000 µs) | Robust surge handling for ISO 7637-2 Pulse 5a/b and IEC 61000-4-5 Level 4 compliance testing |
| Glass passivated junction | Ensures stable VBR tolerance (±5 %), low leakage (<1 µA), and long-term reliability under thermal cycling |
| MSL Level 1 moisture sensitivity | Enables standard reflow without baking; compatible with high-volume SMT assembly at 260 °C peak |
| Low incremental surge resistance | Minimizes VC overshoot during fast transients, improving protection margin for downstream SiC MOSFETs |
Applications
| Automotive DC-DC Converter Input Protection | Industrial 48 V Telecom Power Supply |
|---|---|
Use Scenario: Protects primary-side MOSFETs and gate drivers in 48 V–600 V isolated DC-DC converters subjected to load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamps positive-going surges on high-side rail; responds within <1 ns to limit VDS stress. Use Value: Prevents catastrophic failure of 650 V GaN/SiC switches by holding clamped voltage below 740 V during 400 W surges. |
Use Scenario: Shields rectifier outputs and PMBus communication lines in telecom rectifiers exposed to lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbs repetitive 10/1000 µs transients on 48 V distribution bus without degradation. Use Value: Maintains system uptime by suppressing >450 V transients before they propagate to POL regulators and FPGA power domains. |
| EV Onboard Charger (OBC) AC-DC Stage | Railway Signaling Power Interface |
Use Scenario: Installed across bulk capacitor inputs in OBC front-end rectifiers to absorb regenerative braking spikes and grid coupling transients. IC Role / Device Role / Timing Role: High-VWM unidirectional suppressor blocks normal 400–500 V DC operation but avalanches during >513 V overvoltage events. Use Value: Extends capacitor lifetime by reducing ripple-induced thermal stress during transient clamping cycles. |
Use Scenario: Mounted on 110 V DC signaling interfaces in railway control cabinets to meet EN 50121-3-2 surge immunity requirements. IC Role / Device Role / Timing Role: Primary-level TVS on power entry board; coordinates with secondary MOVs to distribute 10 kV surge energy. Use Value: Achieves >95 % functional survival rate after 20× 10/1000 µs surges at 6 kV due to low VC/IPPM ratio. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage unidirectional TVS applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ540AHE3_A/I | Same VBR range (513–567 V) but SMB package (DO-214AA); 600 W PPPM, higher IPPM (0.67 A), larger footprint | Better suited for PCBs with space for 2.54 mm pitch; preferred where higher surge margin is required without layout change | Select when needing >400 W surge headroom and existing pad layout accommodates SMB outline |
| SMCJ540AHE3_A/I | Same VBR range; SMC package (DO-214AB); 5.0 kW PPPM, 6.8 A IPPM, 773 V VC; 3× larger thermal mass | Used in main power entry protection where PCB area allows and multi-kW surge handling is mandated | Choose for primary-stage protection in DIN-rail power supplies requiring IEC 61000-4-5 Level 4 compliance |
Compared with P4SMA540AHE3_A/I, SMBJ540AHE3_A/I offers higher surge capacity in a slightly larger package, while SMCJ540AHE3_A/I provides industrial-grade energy absorption at the cost of footprint - making P4SMA540AHE3_A/I optimal for space-constrained automotive modules needing AEC-Q101 validation and precise 459 V standoff.
Availability
P4SMA540AHE3_A/I is available at Aetrix Electronics and suitable for automotive power conversion, industrial 48 V infrastructure, and railway signaling applications requiring stable component supply, AEC-Q101 traceability, and RoHS-compliant sourcing.
Supply support for P4SMA540AHE3_A/I 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 high-voltage transient suppression in automotive, industrial, and telecom systems - engineered for robustness under harsh thermal and surge conditions while maintaining tight parametric tolerances and AEC-Q101 compliance.
FAQ
What is the maximum clamping voltage of P4SMA540AHE3_A/I under rated surge conditions?
The P4SMA540AHE3_A/I exhibits a maximum clamping voltage (VC) of 740 V when subjected to its rated peak pulse current of 0.41 A using the standard 10/1000 µs waveform. This value is measured per Figure 1 in Vishay document 88367 and defines the upper voltage limit imposed on protected circuitry during transient events - critical for ensuring downstream components remain within safe operating area.
Is P4SMA540AHE3_A/I qualified for automotive applications?
Yes, P4SMA540AHE3_A/I is AEC-Q101 qualified, as confirmed in the Vishay P4SMA Series datasheet (Rev. 09-Jan-2024, Doc. #88367). The "HE3" suffix denotes RoHS-compliant construction with AEC-Q101 qualification, and the "_A/I" ordering code specifies 13-inch tape-and-reel packaging - making P4SMA540AHE3_A/I suitable for under-hood ECUs, battery management systems, and ADAS power stages.
What is the standoff voltage rating of P4SMA540AHE3_A/I?
The maximum working standoff voltage (VWM) of P4SMA540AHE3_A/I is 459 V, meaning it blocks voltages up to this level with leakage current ≤1.0 µA at 25 °C. This parameter ensures reliable operation on 400–450 V DC rails - such as those found in EV onboard chargers and industrial 48 V-to-high-voltage converters - without false triggering during nominal conditions.
Does P4SMA540AHE3_A/I have a bidirectional variant?
No, P4SMA540AHE3_A/I is strictly unidirectional, as indicated by the "A" suffix (per Vishay's naming convention). Bidirectional variants use the "CA" suffix (e.g., P4SMA540CA), but no CA version is listed for the 540 V rating in the P4SMA family documentation. The device features a cathode band marking and must be oriented with cathode toward the protected line.
What package type does P4SMA540AHE3_A/I use, and what are its key mechanical attributes?
P4SMA540AHE3_A/I uses the SMA (DO-214AC) package: a compact surface-mount outline measuring 4.50 mm × 2.79 mm × 2.29 mm (L × W × H), with matte tin-plated leads compliant with J-STD-002 solderability and JESD 22-B102 whisker resistance Class 2. Its MSL Level 1 rating permits standard reflow without pre-baking, and the UL 94 V-0 molding compound ensures flame resistance in safety-critical assemblies.
P4SMA540AHE3_A/I 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:
- Obsolete
- 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_A/I FAQ
1.How can I place an order for P4SMA540AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA540AHE3_A/I 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_A/I reliable?
The price and inventory of P4SMA540AHE3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA540AHE3_A/I is usually 5 days.
3.What payment methods are accepted for P4SMA540AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA540AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA540AHE3_A/I?
P4SMA540AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA540AHE3_A/I 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_A/I?
For technical support, including P4SMA540AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA540AHE3_A/I requirements.
6.How does Aetrix verify that P4SMA540AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All P4SMA540AHE3_A/I 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_A/I meets industry standards.
7.What is the process for return or replacement of P4SMA540AHE3_A/I?
All P4SMA540AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA540AHE3_A/I, 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_A/I part is unused and in its original packaging.
Return procedure for P4SMA540AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA540AHE3_A/I Tags
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