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Vishay General Semiconductor - Diodes Division P4SMA540A-M3/61
- Part No.:
- P4SMA540A-M3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA540A-M3/61.pdf
- Description:
- TVS DIODE 459VWM 740VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,917
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Product details
Overview
P4SMA540A-M3/61 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for high-voltage transient protection in power rails and signal lines. 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, and 400 W peak pulse power rating with 10/1000 µs waveform - used to safeguard MOSFETs, DC-DC converters, and industrial power supplies against lightning-induced surges and inductive switching transients.
For engineers reviewing the P4SMA540A-M3/61 datasheet, P4SMA540A-M3/61 pinout, P4SMA540A-M3/61 application, or P4SMA540A-M3/61 equivalent, this part delivers verified AEC-Q101 qualification (HM3 suffix), halogen-free RoHS compliance, MSL Level 1 moisture sensitivity, and SMA (DO-214AC) package compatibility for automated SMT assembly in automotive and industrial environments.
Technical Context
The P4SMA540A-M3/61 operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its specified breakdown threshold. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low incremental surge resistance, enabling precise clamping under fast-rising transients (response time < 1 ns). The device is rated for repetitive 400 W pulses at TA = 25 °C, derating to 300 W above 91 V per specification note.
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 reliable operation up to TJ = +150 °C. Polarity is marked by a cathode band; forward surge capability (IFSM = 40 A, 8.3 ms half-sine) applies only in unidirectional conduction mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 513–567 V at IT = 1.0 mA - defines precise avalanche initiation threshold for overvoltage triggering |
| Standoff Voltage VWM | 459 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 µA |
| Clamping Voltage VC | 740 V at IPPM = 0.41 A (10/1000 µs) - actual voltage seen by protected circuit during surge event |
| Peak Pulse Power PPPM | 400 W (10/1000 µs waveform) - surge energy handling capacity under standardized transient test condition |
| Package | SMA (DO-214AC) - industry-standard surface-mount outline with 5.28 mm × 4.50 mm footprint and 2.29 mm height |
| Operating Temperature | -65 °C to +150 °C - supports deployment in under-hood automotive and high-temperature industrial enclosures |
| AEC-Q101 Qualified | Yes (HM3 suffix) - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
Pinout & Package
SMA (DO-214AC) package with matte tin-plated leads, compliant with J-STD-002 and JESD 22-B102 solderability standards. Cathode identified by molded band; anode is unmarked end. Meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts avalanche current to ground during overvoltage events |
| Anode (unmarked end) | Reference node | Typically tied to system ground or low-impedance return path for clamping action |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Enables robust protection of 400 V+ DC bus systems against IEC 61000-4-5 Level 3/4 surges |
| Glass passivated junction | Ensures long-term VBR stability and low leakage (< 1 µA at VWM) across temperature and life cycle |
| MSL Level 1 (260 °C peak reflow) | Supports single-pass lead-free reflow without popcorn cracking or delamination risk |
| Halogen-free & RoHS-compliant (M3) | Fulfills environmental compliance requirements for automotive OEMs and industrial equipment manufacturers |
| Low incremental surge resistance | Minimizes VC overshoot during fast transients, improving margin for downstream ICs |
Applications
| Industrial Motor Drives | Automotive Power Distribution Units |
|---|---|
|
Use Scenario: Protection of IGBT gate drivers and DC-link capacitors against commutation spikes in variable-frequency drives. IC Role / Device Role: Unidirectional TVS placed across DC bus or between gate and source to clamp inductive kickback. Use Value: Clamps transients to ≤740 V while sustaining 400 W pulses, preventing gate oxide rupture and capacitor overvoltage failure. |
Use Scenario: Surge suppression on 48 V battery-fed power rails in ADAS domain controllers and body control modules. IC Role / Device Role: Primary overvoltage clamp on input stage, coordinated with fuse and upstream filter in ISO 7637-2/3 compliant designs. Use Value: AEC-Q101 qualification and 150 °C TJ rating ensure reliability in engine bay and chassis-mounted locations. |
| Telecom Power Rectifiers | Renewable Energy Inverters |
|
Use Scenario: Input-stage protection for AC/DC front-ends exposed to lightning-induced surges on outdoor telecom cabinets. IC Role / Device Role: Secondary clamping device downstream of MOVs, absorbing residual energy after coarse suppression. Use Value: 459 V VWM allows direct placement on 400 V nominal rectified lines with 15% margin; 740 V VC limits stress on downstream regulators. |
Use Scenario: DC-side transient protection in solar string inverters where PV array open-circuit voltage reaches 1000 V. IC Role / Device Role: Cascaded TVS in multi-stage protection scheme, positioned after DC contactors and before MPPT controller inputs. Use Value: High VBR (513–567 V) enables use in 600–800 V DC systems without stacking; DO-214AC package supports high-density PCB layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ540A | Same VBR range (513–567 V), but lower PPPM (400 W vs. P4SMA540A-M3/61's 400 W), identical SMA package and thermal specs | No AEC-Q101 qualification; commercial-grade only | Select when automotive qualification is not required and cost optimization is prioritized |
| 1.5SMC540A | Higher power rating (1500 W), larger SMC (DO-214AB) package, same VBR/VC values | Requires larger PCB area and different thermal pad design; suited for higher-energy threat environments | Choose when surge energy exceeds 400 W capability and board space permits SMC footprint |
Compared with SMAJ540A, P4SMA540A-M3/61 adds AEC-Q101 qualification and halogen-free compliance without sacrificing clamping performance; versus 1.5SMC540A, it trades peak power for compactness and automotive suitability - making it optimal for space-constrained, safety-critical 48–400 V systems.
Availability
P4SMA540A-M3/61 is available at Aetrix Electronics and suitable for industrial motor drives, automotive power distribution units, telecom rectifiers, and renewable energy inverters requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for P4SMA540A-M3/61 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, efficiency, and application-specific validation.
The P4SMA Series targets high-voltage transient suppression in automotive, industrial, and telecom infrastructure, delivering standardized TVS performance in compact surface-mount packages with rigorous qualification for harsh environments.
FAQ
What is the maximum clamping voltage of the P4SMA540A-M3/61 under standard test conditions?
The P4SMA540A-M3/61 has a maximum clamping voltage (VC) of 740 V when subjected to a 10/1000 µs peak pulse current of 0.41 A. This value is measured per JEDEC standards and represents the upper voltage limit imposed on the protected circuit during transient events - critical for ensuring downstream components remain within safe operating voltage margins. The P4SMA540A-M3/61 maintains this clamping performance across its full operating temperature range.
Is the P4SMA540A-M3/61 qualified for automotive applications?
Yes, the P4SMA540A-M3/61 carries the HM3 suffix, indicating halogen-free, RoHS-compliant construction and full AEC-Q101 qualification. It has passed stress tests including temperature cycling, high-temperature reverse bias (HTRB), and electrostatic discharge (ESD) per automotive reliability standards. This makes the P4SMA540A-M3/61 suitable for under-hood and chassis-mounted applications where extended temperature operation and long-term reliability are mandatory.
What does the "M3" in P4SMA540A-M3/61 signify?
The "M3" suffix in P4SMA540A-M3/61 denotes halogen-free, RoHS-compliant construction meeting Vishay's material categorization standard for environmentally restricted substances. It also indicates compliance with JESD201 Class 2 whisker resistance and MSL Level 1 moisture sensitivity - enabling safe lead-free reflow processing. The "/61" specifies packaging in 7-inch plastic tape-and-reel format with 1800 units per reel.
Can the P4SMA540A-M3/61 be used in bidirectional configurations?
No, the P4SMA540A-M3/61 is a unidirectional TVS diode, as indicated by the "A" suffix (not "CA"). It conducts only in reverse-bias avalanche mode and must be oriented with the cathode band toward the protected line. For bidirectional protection at comparable voltage ratings, Vishay offers the P4SMA540CA series - which features symmetrical clamping in both polarities and no polarity marking.
What is the thermal resistance of the P4SMA540A-M3/61, and how does it affect PCB layout?
The P4SMA540A-M3/61 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 worst-case power dissipation, designers must allocate adequate copper area and consider airflow or heatsinking. The junction-to-lead resistance (RθJL) is 30 °C/W, supporting efficient heat transfer through solder joints to internal ground planes.
P4SMA540A-M3/61 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-M3/61 FAQ
1.How can I place an order for P4SMA540A-M3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA540A-M3/61 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-M3/61 reliable?
The price and inventory of P4SMA540A-M3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA540A-M3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA540A-M3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA540A-M3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA540A-M3/61?
P4SMA540A-M3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA540A-M3/61 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-M3/61?
For technical support, including P4SMA540A-M3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA540A-M3/61 requirements.
6.How does Aetrix verify that P4SMA540A-M3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA540A-M3/61 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-M3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA540A-M3/61?
All P4SMA540A-M3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA540A-M3/61, 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-M3/61 part is unused and in its original packaging.
Return procedure for P4SMA540A-M3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA540A-M3/61 Tags
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