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Vishay General Semiconductor - Diodes Division P4SMA47A-M3/5A
- Part No.:
- P4SMA47A-M3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA47A-M3/5A.pdf
- Description:
- TVS DIODE 40.2VWM 64.8VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,110
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Product details
Overview
P4SMA47A-M3/5A from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on power and signal lines. It features a 47 V breakdown voltage (VBR = 44.7–49.4 V at 1 mA), 400 W peak pulse power (10/1000 µs), and clamps to 64.8 V at 6.2 A peak pulse current - used to protect MOSFETs, ICs, and sensor interfaces in industrial and automotive electronics.
For engineers reviewing the P4SMA47A-M3/5A datasheet, P4SMA47A-M3/5A pinout, P4SMA47A-M3/5A application, or P4SMA47A-M3/5A equivalent, this page delivers verified electrical parameters, thermal behavior, clamping performance under surge conditions, and direct alternatives with documented differences in standoff voltage, clamping ratio, and AEC-Q101 qualification status.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, leveraging glass-passivated junction technology for stable avalanche response. Its 10/1000 µs waveform rating applies under non-repetitive surge conditions with 0.01% duty cycle, and thermal resistance is specified at RθJA = 120 °C/W (on minimum pad layout) and RθJL = 30 °C/W.
The device exhibits low incremental surge resistance and fast response time inherent to silicon avalanche diodes, enabling sub-nanosecond reaction to ESD and inductive switching transients. It meets J-STD-020 MSL Level 1 and supports lead-free reflow up to 260 °C peak temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 44.7 V / 49.4 V at IT = 1 mA - defines precise avalanche initiation window for reliable overvoltage triggering |
| VWM | 40.2 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA |
| VC @ IPPM | 64.8 V at 6.2 A - clamped voltage during 400 W transient, limiting downstream stress |
| PPPM | 400 W (10/1000 µs) - peak surge energy handling capacity under standard lightning/surge test waveform |
| IPPM | 6.2 A - peak pulse current corresponding to 400 W clamping condition |
| TJ max | +150 °C - maximum junction temperature supporting operation in under-hood or high-ambient industrial environments |
| Package | SMA (DO-214AC) - industry-standard surface-mount outline with 5.0 mm × 5.0 mm copper pad thermal requirement |
Pinout & Package
SMA (DO-214AC) package: molded epoxy case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1, compatible with J-STD-002 solderability and JESD 22-B102 whisker testing. Cathode indicated by band; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode-side connection in reverse-biased clamping configuration | Connected to protected line; conducts during overvoltage to shunt current to ground |
| Anode (unbanded end) | Reference/ground return path | Typically tied to system ground or low-impedance return plane to complete clamping loop |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Enables robust protection against IEC 61000-4-5 Level 4 surges without derating below 91 V |
| Low clamping ratio (VC/VBR ≈ 1.31) | Minimizes voltage overshoot during transients, reducing stress on downstream 50 V-rated components |
| AEC-Q101 qualified option available | M3 suffix indicates halogen-free, RoHS-compliant construction validated for automotive-grade reliability |
| Glass passivated junction | Ensures stable VBR tolerance and long-term parameter stability under thermal cycling |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking preconditioning |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
Use Scenario: Protection of gate drivers and microcontroller I/O lines from inductive kickback during relay or solenoid switching. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground, clamping transients within 1 ns. Use Value: Limits voltage excursion to ≤64.8 V, preventing latch-up or oxide breakdown in 3.3 V/5 V logic interfaces. |
Use Scenario: Safeguarding LIN bus transceivers and sensor inputs (e.g., ambient temperature, door position) against load dump and jump-start events. IC Role / Device Role / Timing Role: Standoff-rated clamping device on 12 V supply rail upstream of LDO regulators. Use Value: Withstands 400 W pulses while maintaining VWM = 40.2 V, ensuring no false triggering during normal 13.5–14.5 V battery operation. |
| Telecom Power Supply Inputs | Consumer Appliance Control Boards |
Use Scenario: Input-stage surge suppression on AC/DC adapter secondary-side 48 V rails exposed to field wiring transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp ahead of DC-DC converters and PMICs. Use Value: Delivers 6.2 A peak pulse current handling with <100 ps response, meeting ITU-T K.20 immunity requirements. |
Use Scenario: Protecting MCU reset lines and communication interfaces (UART, I²C) from ESD and EFT in washing machine or HVAC control units. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF at VWM) unidirectional suppressor on signal traces. Use Value: Clamps 8 kV contact ESD per IEC 61000-4-2 without signal distortion due to minimal junction capacitance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ47A-E3/52 | Same VBR range (44.7–49.4 V), but SMB package (DO-214AA); higher PPPM = 600 W; RθJA = 100 °C/W | Better thermal dissipation on larger pads; not drop-in due to larger footprint (4.58 mm × 3.94 mm vs. SMA's 4.50 mm × 2.79 mm) | Select when board space allows larger package and higher surge margin is required beyond 400 W |
| 1.5SMC47A | Same electrical specs, but SMC (DO-214AB) package; PPPM = 1500 W; RθJA = 60 °C/W; heavier (0.2 g vs. 0.064 g) | Used in high-reliability industrial power supplies where mechanical robustness and thermal mass matter more than size | Choose for legacy designs using SMC footprints or where 1500 W surge rating is mandated by system-level standards |
Compared with P4SMA47A-M3/5A, SMBJ47A-E3/52 offers higher surge capacity in a slightly larger but still compact package, while 1.5SMC47A provides triple the peak power in a through-hole-compatible SMD outline - both require PCB layout changes but deliver measurable improvements in thermal margin and transient energy absorption.
Availability
P4SMA47A-M3/5A is available at Aetrix Electronics and suitable for industrial motor drives, automotive body electronics, telecom power inputs, and consumer appliance control boards requiring stable component supply with halogen-free, RoHS-compliant construction.
Supply support for P4SMA47A-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 supplier of discrete semiconductors, specializing in diodes, rectifiers, and protection devices with emphasis on reliability, thermal performance, and automotive qualification.
The P4SMA Series targets cost-sensitive, high-volume applications needing standardized TVS protection across 6.8 V to 540 V, with design focus on automated assembly compatibility and consistent clamping behavior in harsh environments.
FAQ
What is the maximum clamping voltage of the P4SMA47A-M3/5A under a 10/1000 µs surge?
The P4SMA47A-M3/5A clamps to 64.8 V at its rated peak pulse current of 6.2 A, corresponding to a 400 W transient per the 10/1000 µs waveform. This value is measured under standard test conditions with 0.2" × 0.2" copper pads and represents the upper limit of voltage seen by downstream circuitry during surge events. The P4SMA47A-M3/5A maintains this clamping performance across its full operating temperature range.
Is the P4SMA47A-M3/5A AEC-Q101 qualified?
No - the P4SMA47A-M3/5A carries the M3 suffix indicating halogen-free, RoHS-compliant commercial-grade construction, but it is not AEC-Q101 qualified. For automotive applications requiring qualification, Vishay offers the P4SMA47AHE3_A variant (E3 suffix + HE3 designation), which is explicitly listed as AEC-Q101 qualified in the ordering table. The P4SMA47A-M3/5A remains suitable for industrial and consumer use where automotive qualification is not mandated.
What is the standoff voltage (VWM) of the P4SMA47A-M3/5A, and why does it matter?
The standoff voltage VWM of the P4SMA47A-M3/5A is 40.2 V - the maximum DC or RMS voltage that can be continuously applied without exceeding 1 µA reverse leakage. This parameter ensures the P4SMA47A-M3/5A remains non-conductive during normal operation while remaining ready to avalanche at 44.7 V. Selecting VWM ≥ 1.1× nominal line voltage prevents nuisance triggering in systems like 36 V industrial buses or 42 V automotive subsystems.
How does the thermal resistance of the P4SMA47A-M3/5A affect its surge capability?
The P4SMA47A-M3/5A has a typical junction-to-ambient thermal resistance RθJA of 120 °C/W when mounted on minimum recommended 0.2" × 0.2" copper pads. This directly limits its ability to absorb repetitive surges: above 25 °C ambient, derating applies per Figure 2 in the datasheet. For single-event protection (e.g., ESD or lightning), thermal resistance is less critical than peak pulse rating, but for burst-mode transients, the P4SMA47A-M3/5A requires adequate copper area to avoid junction overheating.
Can the P4SMA47A-M3/5A be used in bidirectional configurations?
No - the P4SMA47A-M3/5A is a unidirectional TVS diode, identified by the "A" suffix and cathode band marking. Bidirectional variants use the "CA" suffix (e.g., P4SMA47CA). Using the P4SMA47A-M3/5A in bidirectional signal paths would result in forward conduction during negative transients, potentially damaging the device or failing to suppress. Always match device polarity to system topology: P4SMA47A-M3/5A for DC rails with defined ground reference, P4SMA47CA for AC-coupled or floating lines.
P4SMA47A-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):
- 40.2V
- Voltage - Breakdown (Min):
- 44.7V
- Voltage - Clamping (Max) @ Ipp:
- 64.8V
- Current - Peak Pulse (10/1000µs):
- 6.2A
- Power - Peak Pulse:
- 400W
- 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)
P4SMA47A-M3/5A FAQ
1.How can I place an order for P4SMA47A-M3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA47A-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 P4SMA47A-M3/5A reliable?
The price and inventory of P4SMA47A-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 P4SMA47A-M3/5A is usually 5 days.
3.What payment methods are accepted for P4SMA47A-M3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA47A-M3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA47A-M3/5A?
P4SMA47A-M3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA47A-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 P4SMA47A-M3/5A?
For technical support, including P4SMA47A-M3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA47A-M3/5A requirements.
6.How does Aetrix verify that P4SMA47A-M3/5A is sourced from the original manufacturer or authorized distributors?
All P4SMA47A-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 P4SMA47A-M3/5A meets industry standards.
7.What is the process for return or replacement of P4SMA47A-M3/5A?
All P4SMA47A-M3/5A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA47A-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 P4SMA47A-M3/5A part is unused and in its original packaging.
Return procedure for P4SMA47A-M3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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