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Vishay General Semiconductor - Diodes Division P4SMA56A-E3/5A
- Part No.:
- P4SMA56A-E3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA56A-E3/5A.pdf
- Description:
- TVS DIODE 47.8VWM 77VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,726
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Product details
Overview
P4SMA56A-E3/5A 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 56 V breakdown voltage (VBR = 53.2–58.8 V at 1 mA), 47.8 V standoff voltage (VWM), 77.0 V maximum clamping voltage (VC) at 5.2 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial and automotive electronics.
For engineers reviewing the P4SMA56A-E3/5A datasheet, P4SMA56A-E3/5A pinout, P4SMA56A-E3/5A application, or P4SMA56A-E3/5A equivalent, key selection criteria include unidirectional polarity, SMA package thermal resistance (RθJA = 120 °C/W), AEC-Q101 qualification status (not applicable to -E3/5A suffix), RoHS compliance, and 150 °C max junction temperature.
Technical Context
The P4SMA56A-E3/5A operates as a clamping-type TVS diode: under normal conditions it presents high impedance above 47.8 V, then rapidly avalanches below 77.0 V to divert transient energy away from protected circuitry. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1 µA at VWM).
It delivers 400 W peak pulse power per 10/1000 µs waveform when mounted on 5.0 mm × 5.0 mm copper pads, with derating above 25 °C ambient per Fig. 2. The device exhibits 0.103 %/°C temperature coefficient of VBR, enabling predictable performance across -65 to +150 °C operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 53.2–58.8 V at 1 mA test current - defines precise avalanche onset threshold for reliable clamping |
| Standoff Voltage VWM | 47.8 V - maximum continuous reverse voltage before significant leakage begins |
| Clamping Voltage VC | 77.0 V at 5.2 A IPPM - limits transient voltage seen by downstream components during surge events |
| Peak Pulse Power PPPM | 400 W (10/1000 µs) - energy-handling capacity for common lightning/inductive-spike waveforms |
| Junction Temperature Range | -65 to +150 °C - supports operation in harsh environments including under-hood automotive zones |
| Package | SMA (DO-214AC) - surface-mount footprint compatible with automated assembly and IPC-7351 standard land patterns |
| RoHS Compliance | E3 suffix - lead-free, halogen-free matte tin plating meets J-STD-002 solderability and JESD22-B102 whisker resistance Class 2 |
Pinout & Package
Package: SMA (DO-214AC), molded epoxy case with UL 94 V-0 flammability rating; cathode indicated by band on body; terminals are matte tin-plated leads suitable for reflow soldering per J-STD-020 MSL Level 1 (peak 260 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection in unidirectional configuration | Connected to ground or return path; current flows from cathode to anode during clamping |
| Cathode | High-side connection with polarity marking | Banded end; connects to protected line; blocks reverse current until VBR exceeded |
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 external heat sinking |
| Glass passivated junction | Ensures stable VBR tolerance and long-term reliability under repeated transient stress |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ESD, inductive kick) |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking preconditioning |
| Automated placement compatibility | Low-profile SMA package supports high-speed pick-and-place with >99.9% placement yield |
Applications
| Industrial Motor Control | Automotive Body Electronics |
|---|---|
Use Scenario: Protection of gate drivers and microcontroller I/O lines against inductive switching spikes from solenoids and relays in PLCs and motor drives. IC Role / Device Role / Timing Role: Clamping diode placed directly across power rails or signal inputs to limit transient overvoltage before it reaches sensitive logic. Use Value: Prevents latch-up and permanent damage to 3.3 V/5 V MCUs and gate drivers during 400 W surge events with <1 ns response time. |
Use Scenario: Surge suppression on LIN bus lines and sensor supply rails (e.g., ambient temperature, rain sensor) in door modules and lighting control units. IC Role / Device Role / Timing Role: Unidirectional TVS connected between VBAT and ground to clamp load-dump transients up to 400 W. Use Value: Maintains system uptime by preventing reset or brownout during ISO 7637-2 Pulse 5a events without requiring additional filtering. |
| Telecom Power Supply Input | Consumer Sensor Interface |
Use Scenario: Input-stage protection for AC/DC adapters and PoE injectors exposed to lightning-induced surges on primary-side DC rails. IC Role / Device Role / Timing Role: Primary-side TVS placed after rectification but before bulk capacitor to absorb differential-mode transients. Use Value: Limits clamped voltage to 77.0 V, ensuring downstream regulators and controllers remain within absolute maximum ratings. |
Use Scenario: ESD and EFT protection on analog outputs of environmental sensors (e.g., humidity, pressure) in smart home hubs and wearables. IC Role / Device Role / Timing Role: Low-capacitance TVS (CJ ≈ 50 pF typical at VWM) placed inline with signal traces to preserve bandwidth. Use Value: Provides 8 kV contact / 15 kV air-gap ESD immunity per IEC 61000-4-2 while adding <0.5 ns propagation delay. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ58A | 600 W PPPM, SMB package (DO-214AA), higher thermal resistance (RθJA = 140 °C/W) | Better suited for higher-energy transients where board space allows larger footprint | Select when 600 W surge margin is required and PCB layout accommodates wider 4.6 mm body |
| 1.5SMC56A | 1500 W PPPM, SMC package (DO-214AB), 2× larger footprint, higher VC = 93.6 V | Used in main power rail protection where clamping voltage margin permits higher VC | Choose for front-end AC/DC input stages needing higher single-pulse energy handling |
Compared with P4SMA56A-E3/5A, SMBJ58A offers greater pulse power in a slightly larger package but lower thermal efficiency, while 1.5SMC56A provides triple the power rating at the cost of board area and higher clamping voltage - making P4SMA56A-E3/5A optimal for space-constrained secondary-side and signal-line protection.
Availability
P4SMA56A-E3/5A is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, and telecom power supply input applications requiring stable component supply, RoHS-compliant sourcing, and high-volume tape-and-reel delivery.
Supply support for P4SMA56A-E3/5A 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 leader in discrete semiconductors, specializing in diodes, rectifiers, and protection devices with emphasis on reliability, precision, and automotive-grade qualification.
The P4SMA Series targets cost-sensitive, high-volume transient protection needs in consumer, industrial, and automotive systems - delivering standardized TVS performance in compact surface-mount packages with consistent AEC-Q101 options.
FAQ
What is the maximum clamping voltage of the P4SMA56A-E3/5A under specified test conditions?
The P4SMA56A-E3/5A has a maximum clamping voltage (VC) of 77.0 V when subjected to its rated peak pulse current of 5.2 A using a 10/1000 µs waveform. This value is measured at the device terminals under standard test conditions (TA = 25 °C, mounted on 5.0 mm × 5.0 mm copper pads), and represents the upper voltage limit imposed on protected circuitry during transient events.
Is the P4SMA56A-E3/5A qualified to AEC-Q101 for automotive use?
No, the P4SMA56A-E3/5A is not AEC-Q101 qualified. The -E3 suffix denotes RoHS-compliant commercial-grade construction. AEC-Q101 versions carry HE3 or HM3 suffixes (e.g., P4SMA56AHE3_A); the P4SMA56A-E3/5A is intended for industrial and consumer applications where automotive qualification is not required.
What does the "/5A" in P4SMA56A-E3/5A indicate?
The "/5A" suffix in P4SMA56A-E3/5A specifies the packaging format: 13-inch diameter plastic tape and reel containing 7500 units. This contrasts with "/61", which denotes 7-inch reels of 1800 units. Both share identical electrical and thermal specifications - only the delivery format differs.
Can the P4SMA56A-E3/5A be used in bidirectional configurations?
No, the P4SMA56A-E3/5A is a unidirectional TVS diode. Bidirectional variants use the "CA" suffix (e.g., P4SMA56CA). The "A" in P4SMA56A-E3/5A explicitly designates unidirectional polarity, with the banded end serving as the cathode - applying reverse voltage beyond VWM will cause conduction only in the forward direction relative to that marking.
What is the thermal resistance from junction to ambient for the P4SMA56A-E3/5A?
The P4SMA56A-E3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on the minimum recommended pad layout (0.2" × 0.2" copper pads per terminal). This value assumes still air convection and is critical for calculating safe power dissipation limits at elevated ambient temperatures.
P4SMA56A-E3/5A 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):
- 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-E3/5A FAQ
1.How can I place an order for P4SMA56A-E3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA56A-E3/5A 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 P4SMA56A-E3/5A reliable?
The price and inventory of P4SMA56A-E3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA56A-E3/5A is usually 5 days.
3.What payment methods are accepted for P4SMA56A-E3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA56A-E3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA56A-E3/5A?
P4SMA56A-E3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA56A-E3/5A 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 P4SMA56A-E3/5A?
For technical support, including P4SMA56A-E3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA56A-E3/5A requirements.
6.How does Aetrix verify that P4SMA56A-E3/5A is sourced from the original manufacturer or authorized distributors?
All P4SMA56A-E3/5A 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 P4SMA56A-E3/5A meets industry standards.
7.What is the process for return or replacement of P4SMA56A-E3/5A?
All P4SMA56A-E3/5A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA56A-E3/5A, 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 P4SMA56A-E3/5A part is unused and in its original packaging.
Return procedure for P4SMA56A-E3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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