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Vishay General Semiconductor - Diodes Division P4SMA540AHE3_A/H
- Part No.:
- P4SMA540AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA540AHE3_A/H.pdf
- Description:
- TVS DIODE 459VWM 740VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,608
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Product details
Overview
P4SMA540AHE3_A/H 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 standoff voltage (VWM), and 740 V 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 electronics protection.
For engineers reviewing the P4SMA540AHE3_A/H datasheet, P4SMA540AHE3_A/H pinout, P4SMA540AHE3_A/H application, or P4SMA540AHE3_A/H equivalent, this device serves as a high-voltage transient clamp for DC bus lines, battery input stages, and industrial power supply rails where robust overvoltage immunity above 400 V is required.
Technical Context
The P4SMA540AHE3_A/H operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its specified VBR range (513–567 V). Its low incremental surge resistance ensures tight clamping during fast transients, with response time under 1 ns. The device is designed for single-polarity DC protection and requires cathode-band orientation during PCB layout.
Thermal performance is defined by RθJA = 120 °C/W (junction-to-ambient, on minimum pad layout) and RθJL = 30 °C/W (junction-to-lead), supporting operation up to TJ = +150 °C. It meets J-STD-020 MSL Level 1 and passes JESD 201 Class 2 whisker testing, confirming suitability for lead-free reflow assembly.
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 across temperature and unit variation |
| VWM | 459 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 740 V at 0.41 A (10/1000 µs) - clamped voltage seen by protected circuit during worst-case surge |
| PPPM | 400 W - peak transient energy absorption capability without failure under standard 10/1000 µs waveform |
| IFSM | 40 A - maximum non-repetitive forward surge current (8.3 ms half-sine), relevant for fault-current limiting |
| TJ max. | +150 °C - maximum junction temperature enabling use in under-hood automotive or high-ambient industrial environments |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per stress test plan |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode identified by black band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side of protected line (e.g., ground or return path) |
| Cathode | Avalanche conduction terminal | Connected to higher-potential side (e.g., DC input rail); band-marked end must align with PCB silkscreen cathode indicator |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Enables protection against ISO 7637-2 Pulse 1/2a/5a surges on 48 V and 60 V DC systems without derating |
| AEC-Q101 qualification | Validates long-term reliability in automotive power modules, battery management systems, and ADAS sensor interfaces |
| Low incremental surge resistance | Minimizes VC – VBR spread, improving clamping precision and reducing stress on downstream MOSFETs or controllers |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free SMT assembly without pre-baking or special handling |
| Glass passivated junction | Ensures stable VBR and low leakage (<1 µA at VWM) over 15-year field life in humid or thermally cycled environments |
Applications
| Automotive Battery Input Protection | Industrial DC Power Rail Clamping |
|---|---|
|
Use Scenario: Protecting 48 V/60 V battery-fed ECUs from load-dump transients (ISO 16750-2) and alternator overshoot. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery+ and chassis ground, clamping spikes within nanoseconds. Use Value: Withstands 400 W surges while holding clamped voltage below 740 V, preserving gate oxide integrity of upstream buck controllers and CAN transceivers. |
Use Scenario: Safeguarding programmable logic controller (PLC) 24–60 V DC input terminals against inductive switching transients from solenoids and contactors. IC Role / Device Role / Timing Role: Standoff-rated TVS connected across input filter capacitor, absorbing repetitive 10/1000 µs surges without thermal runaway. Use Value: 459 V VWM allows compatibility with 60 V nominal rails; 150 °C TJ rating supports operation inside sealed enclosures with ambient up to +85 °C. |
| Telecom DC Feeder Line Protection | Renewable Energy Charge Controller Input |
|
Use Scenario: Shielding remote radio head (RRH) power inputs from lightning-induced surges on outdoor DC feeder cables. IC Role / Device Role / Timing Role: First-stage transient suppressor mounted at entry point, coordinated with downstream MOVs and GDTs. Use Value: Fast <1 ns response and 740 V clamping prevent damage to sensitive RF front-end ICs and bias tees during multi-kV events. |
Use Scenario: Protecting solar charge controller inputs from voltage reversals and lightning surges on PV string outputs (up to 600 V OC). IC Role / Device Role / Timing Role: High-VWM unidirectional TVS placed across MPPT input stage, blocking reverse current while clamping positive transients. Use Value: 459 V VWM provides margin above typical 450 V PV string operating voltage; AEC-Q101 qualification ensures field longevity in desert installations. |
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 thermal mass | Higher power handling and better thermal dissipation, but 25 % larger footprint than SMA | Select when board space permits and >400 W surge margin is needed; not drop-in due to different pad layout |
| 1.5KE540A | Through-hole DO-201 package; identical electrical specs but 1.5 kW PPPM, higher IPPM (1.2 A) | Designed for legacy through-hole assembly; unsuitable for automated SMT lines | Choose only for repair or low-volume prototyping where rework tolerance and manual assembly are priorities |
Compared with SMBJ540A and 1.5KE540A, the P4SMA540AHE3_A/H offers optimal balance of high-voltage clamping, AEC-Q101 compliance, and compact SMA footprint-making it the preferred choice for space-constrained automotive and industrial SMT designs requiring certified reliability.
Availability
P4SMA540AHE3_A/H is available at Aetrix Electronics and suitable for automotive battery management, industrial PLC power inputs, telecom DC feeder protection, and renewable energy charge controller applications requiring stable component supply and AEC-Q101 assurance.
Supply support for P4SMA540AHE3_A/H 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, MOSFETs, and passive components with emphasis on reliability, efficiency, and application-specific optimization.
The P4SMA Series is engineered for high-voltage transient suppression in automotive, industrial, and telecom infrastructure-delivering consistent clamping performance, AEC-Q101 validation, and robust SMT manufacturability in the SMA package.
FAQ
What is the maximum clamping voltage of the P4SMA540AHE3_A/H under standard surge conditions?
The P4SMA540AHE3_A/H has a maximum clamping voltage (VC) of 740 V when subjected to its rated peak pulse current of 0.41 A using the industry-standard 10/1000 µs waveform. This value is measured at TA = 25 °C and reflects worst-case clamping behavior across process and temperature variation. The P4SMA540AHE3_A/H maintains this specification across its full operating junction temperature range.
Is the P4SMA540AHE3_A/H suitable for automotive applications?
Yes, the P4SMA540AHE3_A/H is explicitly AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3" and revision note indicating _B qualification for P4SMA250A to P4SMA540A. It undergoes stress testing for temperature cycling, high-temperature reverse bias, and mechanical shock-making it appropriate for engine control units, battery disconnect modules, and ADAS power supplies where transient immunity above 450 V is required.
What does the "HE3" and "_A/H" suffix mean in P4SMA540AHE3_A/H?
In P4SMA540AHE3_A/H, "HE3" denotes RoHS-compliant construction with AEC-Q101 qualification; "_A" indicates the revision level of the AEC-Q101 test program applicable to this voltage range; "/H" specifies packaging in 7-inch tape-and-reel format with 1800 units per reel. This full suffix confirms both automotive reliability certification and standardized SMT handling compatibility.
Can the P4SMA540AHE3_A/H be used in bidirectional configurations?
No, the P4SMA540AHE3_A/H is a unidirectional TVS diode, as indicated by its "A" suffix (vs. "CA" for bidirectional variants). Its cathode band must be oriented toward the higher-potential side of the protected line. For bidirectional protection at comparable voltage ratings, Vishay offers the P4SMA540CA series-but those devices have different VBR, VWM, and clamping characteristics and are not interchangeable with the P4SMA540AHE3_A/H.
What is the thermal resistance and how does it affect PCB layout for the P4SMA540AHE3_A/H?
The P4SMA540AHE3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on the minimum recommended copper pad layout (0.2" × 0.2" per terminal). To maintain TJ ≤ 150 °C under sustained power dissipation, designers must ensure adequate copper area and avoid thermal bottlenecks. Increasing pad size or adding internal ground planes reduces RθJA, directly improving surge endurance and long-term reliability of the P4SMA540AHE3_A/H.
P4SMA540AHE3_A/H 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/H FAQ
1.How can I place an order for P4SMA540AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA540AHE3_A/H 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/H reliable?
The price and inventory of P4SMA540AHE3_A/H 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/H is usually 5 days.
3.What payment methods are accepted for P4SMA540AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA540AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA540AHE3_A/H?
P4SMA540AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA540AHE3_A/H 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/H?
For technical support, including P4SMA540AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA540AHE3_A/H requirements.
6.How does Aetrix verify that P4SMA540AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All P4SMA540AHE3_A/H 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/H meets industry standards.
7.What is the process for return or replacement of P4SMA540AHE3_A/H?
All P4SMA540AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA540AHE3_A/H, 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/H part is unused and in its original packaging.
Return procedure for P4SMA540AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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