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Vishay General Semiconductor - Diodes Division P4SMA47A-E3/61
- Part No.:
- P4SMA47A-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA47A-E3/61.pdf
- Description:
- TVS DIODE 40.2VWM 64.8VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P4SMA47A-E3/61 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for clamping inductive and lightning-induced transients on power and signal lines. It features a 47 V breakdown voltage (VBR = 44.7–49.4 V at 1 mA), 40.2 V standoff voltage (VWM), 64.8 V maximum clamping voltage (VC) at 6.2 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform - used in automotive sensor protection and industrial I/O interface circuits.
For engineers reviewing the P4SMA47A-E3/61 datasheet, P4SMA47A-E3/61 pinout, P4SMA47A-E3/61 application, or P4SMA47A-E3/61 equivalent, key selection criteria include unidirectional polarity, SMA (DO-214AC) package compatibility, 150 °C max junction temperature, low incremental surge resistance, and AEC-Q101 qualification status for automotive-grade reliability.
Technical Context
The P4SMA47A-E3/61 operates as a silicon avalanche diode with glass-passivated junction, delivering fast response time (<1 ns) and stable clamping under repetitive transient stress. Its thermal resistance (RθJA = 120 °C/W) and junction-to-lead resistance (RθJL = 30 °C/W) support operation up to 150 °C with derated power above 25 °C ambient.
It complies with UL 497B recognition (QVGQ2) and meets JESD201 Class 2 whisker resistance. The device is RoHS-compliant (E3 suffix), rated for 40 A non-repetitive forward surge current (8.3 ms half-sine), and specified for mounting on 0.2" × 0.2" copper pads per JEDEC standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 44.7 V / 49.4 V at 1 mA - defines precise avalanche initiation threshold 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 10/1000 µs transient, limiting downstream IC stress |
| PPPM | 400 W - peak pulse power handling capability under standard surge waveform |
| IFSM | 40 A - surge current tolerance for 8.3 ms half-sine wave, critical for inductive load switching |
| TJ max | +150 °C - enables use in under-hood automotive and high-temperature industrial environments |
| Package | SMA (DO-214AC) - industry-standard SMD outline with 5.28 mm length, 4.50 mm width, and cathode band marking |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, unidirectional configuration with cathode indicated by molded band. Dimensions: 5.28 mm × 4.50 mm × 2.29 mm (L × W × H). Matte tin-plated leads, solderable per J-STD-002 and JESD22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias | Connected to lower-potential side of protected line; enables conduction during reverse transient |
| Cathode | Current exit terminal in forward bias; marked with band | Connected to higher-potential side (e.g., VCC rail); defines unidirectional clamping direction |
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 degradation |
| Glass passivated chip junction | Ensures long-term stability and low parameter drift under thermal cycling and humidity stress |
| AEC-Q101 qualified (P4SMA47A-E3/61 variant) | Validated for automotive electronics including engine control modules and ADAS sensor interfaces |
| MSL Level 1 (260 °C peak reflow) | Supports standard lead-free SMT assembly without moisture-related popcorning failure |
| UL 497B recognized (QVGQ2) | Meets safety requirements for telecom and industrial signal-line protectors in certified systems |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and ESD events in vehicle ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and ground, clamping transients within nanoseconds to prevent latch-up in downstream ASICs. Use Value: Limits clamped voltage to 64.8 V while absorbing 400 W surges, preserving signal integrity and meeting ISO 7637-2 Pulse 5a requirements. |
Use Scenario: Safeguarding 24 V DC digital input modules in programmable logic controllers against field-wiring induced surges and relay coil flyback. IC Role / Device Role / Timing Role: Standoff-rated TVS on each input channel, shunting energy before it reaches optocoupler or microcontroller GPIO pins. Use Value: Withstands 40 A surge current and maintains <1 µA leakage at 40.2 V, ensuring no false triggering during normal operation. |
| Telecom Line Interface | Consumer Power Supply Clamp |
Use Scenario: Secondary-side transient suppression on Ethernet PHY power rails and RS-485 data lines in network switches and base stations. IC Role / Device Role / Timing Role: Fast-response clamping device across VDD and GND, activated before internal LDO or regulator fails. Use Value: 64.8 V clamping voltage prevents overvoltage damage to 3.3 V/5 V logic while supporting UL 497B compliance for telecom infrastructure. |
Use Scenario: Input-stage surge clamp on AC-DC adapter secondary outputs (e.g., 5 V, 12 V rails) in smart home hubs and set-top boxes. IC Role / Device Role / Timing Role: Primary overvoltage limiter on regulated DC output, placed upstream of USB ports and microcontroller power domains. Use Value: Delivers 400 W pulse handling with 120 °C/W thermal resistance, enabling compact PCB layout without heatsinking. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ47A (Diodes Inc.) | Same VBR range (44.7–49.4 V), but SMB package (DO-214AA) - 5.28 mm × 4.57 mm, slightly wider body | Higher RθJA (100 °C/W vs. 120 °C/W) allows marginally better thermal performance on minimal copper | Select when board space permits larger footprint and tighter thermal budget is required |
| 1.5SMC47A (ON Semiconductor) | Identical electrical specs, but SMC (DO-214AB) package - 7.11 mm × 6.22 mm, ~2× larger footprint and 3× higher weight | Rated for 1500 W peak pulse power (vs. 400 W), suitable for higher-energy surge environments | Choose only if system-level surge testing requires >400 W rating and PCB layout accommodates larger SMC outline |
Compared with P4SMA47A-E3/61, SMBJ47A offers improved thermal dissipation in a marginally larger package, while 1.5SMC47A trades size and weight for significantly higher pulse power - neither is pin-compatible, but all three share identical VBR, VWM, and VC values for direct functional substitution in clamping-critical designs.
Availability
P4SMA47A-E3/61 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection, and consumer power supply clamping requiring stable component supply, full traceability, and AEC-Q101-compliant sourcing.
Supply support for P4SMA47A-E3/61 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, MOSFETs, and passive components with emphasis on reliability, efficiency, and automotive-grade qualification.
The P4SMA series targets cost-sensitive, high-volume transient protection applications where surface-mount compatibility, AEC-Q101 validation, and consistent clamping performance across temperature are essential design requirements.
FAQ
What is the clamping voltage of P4SMA47A-E3/61 at its rated peak pulse current?
The P4SMA47A-E3/61 has a maximum clamping voltage (VC) of 64.8 V at 6.2 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured per Figure 1 in Vishay document 88367 and ensures downstream circuitry remains within safe operating limits during transient events. The P4SMA47A-E3/61 achieves this clamping with low incremental surge resistance, minimizing voltage overshoot beyond the specified VC.
Is P4SMA47A-E3/61 qualified for automotive applications?
Yes, P4SMA47A-E3/61 is AEC-Q101 qualified per Vishay's ordering information note indicating "_A is available for P4SMA6.8(C)A to P4SMA220(C)A, AEC-Q101 qualified". The E3 suffix confirms RoHS compliance, and the device meets JESD201 Class 2 whisker resistance and MSL Level 1 reflow requirements - making P4SMA47A-E3/61 suitable for under-hood and chassis-mounted automotive electronics.
What is the standoff voltage (VWM) and why does it matter for P4SMA47A-E3/61?
The standoff voltage (VWM) of P4SMA47A-E3/61 is 40.2 V - the maximum DC or RMS voltage the device can withstand continuously without exceeding 1 µA reverse leakage current. This parameter ensures P4SMA47A-E3/61 remains non-conductive during normal operation in 36 V nominal automotive or 48 V industrial systems, preventing false triggering while allowing headroom for ripple and tolerance before avalanche onset at 44.7 V.
How does the SMA (DO-214AC) package of P4SMA47A-E3/61 compare to SMB or SMC alternatives?
The SMA (DO-214AC) package of P4SMA47A-E3/61 measures 5.28 mm × 4.50 mm × 2.29 mm - smaller than SMB (DO-214AA) and significantly smaller than SMC (DO-214AB). This compact footprint reduces PCB area by ~30% versus SMB and ~65% versus SMC, while maintaining full 400 W pulse rating. The P4SMA47A-E3/61's RθJA of 120 °C/W reflects this trade-off, requiring adequate copper pour for thermal management in high-duty-cycle applications.
Can P4SMA47A-E3/61 be used in bidirectional configurations?
No, P4SMA47A-E3/61 is a unidirectional TVS diode, as indicated by the "A" suffix (not "CA") and explicit polarity marking (cathode band). Bidirectional variants such as P4SMA47CA exist for AC-coupled or differential line protection, but P4SMA47A-E3/61 must be oriented with cathode toward the protected line's higher potential - using it in reverse or AC contexts would result in unintended forward conduction and failure. Always verify polarity during placement of P4SMA47A-E3/61.
P4SMA47A-E3/61 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):
- 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-E3/61 FAQ
1.How can I place an order for P4SMA47A-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA47A-E3/61 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 P4SMA47A-E3/61 reliable?
The price and inventory of P4SMA47A-E3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA47A-E3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA47A-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA47A-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA47A-E3/61?
P4SMA47A-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA47A-E3/61 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 P4SMA47A-E3/61?
For technical support, including P4SMA47A-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA47A-E3/61 requirements.
6.How does Aetrix verify that P4SMA47A-E3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA47A-E3/61 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 P4SMA47A-E3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA47A-E3/61?
All P4SMA47A-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA47A-E3/61, 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 P4SMA47A-E3/61 part is unused and in its original packaging.
Return procedure for P4SMA47A-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA47A-E3/61 Tags
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