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Vishay General Semiconductor - Diodes Division P4SMA56A-E3/61
- Part No.:
- P4SMA56A-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA56A-E3/61.pdf
- Description:
- TVS DIODE 47.8VWM 77VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,345
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Product details
Overview
P4SMA56A-E3/61 from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 56 V breakdown voltage (VBR = 53.2–58.8 V at IT = 1.0 mA), 47.8 V stand-off voltage (VWM), clamps to ≤77.0 V at 5.2 A peak pulse current (IPPM), and delivers 400 W peak pulse power (10/1000 µs waveform) - deployed in automotive sensor interfaces, industrial I/O protection, and DC power rail surge suppression.
For engineers reviewing the P4SMA56A-E3/61 datasheet, P4SMA56A-E3/61 pinout, P4SMA56A-E3/61 application, or P4SMA56A-E3/61 equivalent, this page provides verified electrical parameters, SMA (DO-214AC) package details, clamping behavior under transient stress, thermal derating curves, and validated alternative parts for design-in flexibility and supply continuity.
Technical Context
The P4SMA56A-E3/61 operates as a unidirectional avalanche diode with glass-passivated junction, enabling fast response (<1 ns) to ESD and lightning-induced transients. Its low incremental surge resistance ensures stable clamping performance across repetitive 10/1000 µs pulses at 0.01% duty cycle, while meeting AEC-Q101 qualification for automotive-grade reliability.
Thermal design is constrained by RθJA = 120 °C/W (typ.) and TJ(max) = +150 °C, requiring PCB copper pad area (0.2" × 0.2") for rated 400 W pulse handling. Reverse leakage remains ≤1.0 µA at VWM, supporting low-power standby circuits without excessive quiescent drain.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 53.2 V / 58.8 V at IT = 1.0 mA - defines precise avalanche onset window for predictable clamping threshold |
| VWM | 47.8 V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM | ≤77.0 V at IPPM = 5.2 A (10/1000 µs) - peak clamped voltage seen by protected IC during worst-case surge |
| PPPM | 400 W - peak transient power dissipation capability with standard 10/1000 µs waveform |
| IFSM | 40 A - maximum non-repetitive forward surge current (8.3 ms half-sine), critical for inrush or fault-current scenarios |
| TJ(max) | +150 °C - maximum junction temperature, enabling operation in under-hood automotive or high-ambient industrial environments |
| RθJA | 120 °C/W - thermal resistance from junction to ambient, dictating required PCB copper area for thermal management |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads; meets UL 94 V-0, MSL Level 1 (260 °C peak reflow), and JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink node | Connected to protected line; conducts avalanche current to ground during overvoltage events |
| Anode | Reference/return path | Typically tied to system ground or lower-potential rail; completes conduction path during clamping |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Enables protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 12–48 V DC rails without external series impedance |
| AEC-Q101 qualified | Validated for automotive applications including engine control modules, body electronics, and ADAS sensor interfaces |
| Glass-passivated junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity exposure |
| Low profile SMA package | Supports high-density automated placement and reflow soldering in space-constrained consumer and industrial PCBs |
| MSL Level 1 rating | Allows unlimited floor life and single-reflow processing without baking, reducing manufacturing overhead |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and chassis ground to clamp transients before they reach sensitive input circuitry. Use Value: Maintains signal integrity below 77.0 V clamping level during 100 V/500 ms load dump events, preventing latch-up or damage to 5 V/3.3 V interface ICs. |
Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to inductive switching noise from solenoids and contactors. IC Role / Device Role / Timing Role: Standoff-rated TVS on 24 V DC input lines, absorbing repetitive 400 W spikes induced by relay coil de-energization. Use Value: Limits voltage excursion to ≤77.0 V at 5.2 A, ensuring downstream optocouplers and microcontrollers remain within absolute maximum ratings. |
| DC Power Rail Surge Suppression | Consumer Device USB/Ethernet Port Protection |
Use Scenario: Secondary overvoltage protection on 48 V PoE-powered equipment or telecom power supplies after primary MOV or fuse coordination. IC Role / Device Role / Timing Role: Fast-clamping TVS in parallel with bulk capacitance to suppress residual ring oscillations and EFT bursts. Use Value: Responds in <1 ns to sub-microsecond transients, clamping to 77.0 V before downstream DC-DC converters experience overvoltage shutdown. |
Use Scenario: Board-level ESD protection on USB 2.0 data lines or Ethernet PHY interfaces in set-top boxes and smart home hubs. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS (CJ ≈ 50 pF typical at VWM) placed inline with signal traces. Use Value: Provides ±15 kV air/±8 kV contact ESD immunity per IEC 61000-4-2 while adding <0.5 pF parasitic capacitance to maintain signal integrity at 480 Mbps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ56A (Bourns) | Same VBR range (53.2–58.8 V), but SMB package (DO-214AA); 600 W PPPM, higher IPPM (9.2 A), RθJA = 90 °C/W | Better thermal performance and higher surge margin; requires larger PCB footprint than SMA | Select when higher pulse energy handling is needed and board space permits SMB layout |
| 1.5SMC56A (ON Semiconductor) | Identical VBR/VWM/VC specs, SMC (DO-214AB) package; 500 W PPPM, IPPM = 6.5 A, RθJA = 100 °C/W | Intermediate power rating and thermal resistance; widely stocked, longer lead times than Vishay's E3/61 tape-and-reel | Choose for cost-sensitive industrial designs where SMC footprint is already standardized |
Compared with P4SMA56A-E3/61, SMBJ56A offers higher surge capacity in a larger package, while 1.5SMC56A provides a middle-ground alternative with broader distributor availability but slightly reduced thermal efficiency - all three maintain identical clamping behavior at 56 V nominal rating.
Availability
P4SMA56A-E3/61 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O protection, and DC power rail surge suppression requiring stable component supply, RoHS-compliant packaging, and AEC-Q101 qualification.
Supply support for P4SMA56A-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 protection devices with emphasis on reliability, precision, and automotive-grade validation.
The P4SMA Series targets cost-effective, high-volume transient suppression in space-constrained applications - engineered for automated assembly, thermal robustness, and compliance with AEC-Q101 and UL 497B safety standards.
FAQ
What is the maximum clamping voltage of the P4SMA56A-E3/61 under a 10/1000 µs surge?
The P4SMA56A-E3/61 clamps to a maximum of 77.0 V when subjected to its rated peak pulse current of 5.2 A using the standard 10/1000 µs waveform. This value is measured per Figure 1 in Vishay Document 88367 and represents the upper limit of voltage seen by downstream circuitry during transient events - critical for ensuring protected ICs remain within their absolute maximum ratings.
Is the P4SMA56A-E3/61 suitable for automotive applications?
Yes, the P4SMA56A-E3/61 is AEC-Q101 qualified and explicitly listed in Vishay's automotive ordering codes (HE3/HM3 variants). Its glass-passivated junction, -65 °C to +150 °C operating range, and robust surge capability make it suitable for under-hood and cabin applications including engine control units, body control modules, and ADAS sensor interfaces - provided layout follows recommended copper pad dimensions.
What does the "-E3/61" suffix indicate in P4SMA56A-E3/61?
The "-E3" denotes RoHS-compliant, commercial-grade construction with matte tin-plated leads, while "/61" specifies packaging in 7-inch diameter plastic tape and reel containing 1800 units. This configuration supports high-speed pick-and-place assembly and aligns with IPC/JEDEC standard reflow profiles, including MSL Level 1 handling without baking.
How does the thermal resistance of the P4SMA56A-E3/61 affect PCB layout?
The P4SMA56A-E3/61 has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W, which assumes mounting on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. Reducing pad size increases thermal impedance, derating pulse power capability - so maintaining this minimum copper area is essential to sustain full 400 W peak pulse performance without exceeding TJ(max) = +150 °C.
Can the P4SMA56A-E3/61 be used in bidirectional configurations?
No - the P4SMA56A-E3/61 is a unidirectional device, indicated by the "A" suffix and cathode band marking. For bidirectional operation, Vishay specifies the "CA" variant (e.g., P4SMA56CA), which lacks polarity marking and exhibits symmetrical clamping in both directions. Using P4SMA56A-E3/61 in reverse-biased AC applications risks permanent junction failure due to forward conduction during negative half-cycles.
P4SMA56A-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):
- 47.8V
- Voltage - Breakdown (Min):
- 53.2V
- Voltage - Clamping (Max) @ Ipp:
- 77V
- Current - Peak Pulse (10/1000µs):
- 5.2A
- 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)
P4SMA56A-E3/61 FAQ
1.How can I place an order for P4SMA56A-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA56A-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 P4SMA56A-E3/61 reliable?
The price and inventory of P4SMA56A-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 P4SMA56A-E3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA56A-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA56A-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA56A-E3/61?
P4SMA56A-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA56A-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 P4SMA56A-E3/61?
For technical support, including P4SMA56A-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA56A-E3/61 requirements.
6.How does Aetrix verify that P4SMA56A-E3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA56A-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 P4SMA56A-E3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA56A-E3/61?
All P4SMA56A-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA56A-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 P4SMA56A-E3/61 part is unused and in its original packaging.
Return procedure for P4SMA56A-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA56A-E3/61 Tags
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