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Vishay General Semiconductor - Diodes Division P4SMA56AHE3/5A
- Part No.:
- P4SMA56AHE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA56AHE3/5A.pdf
- Description:
- TVS DIODE 47.8VWM 77VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,009
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Product details
Overview
P4SMA56AHE3/5A 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 maximum standoff voltage (VWM), 77.0 V clamping voltage (VC) at 5.2 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform - used to safeguard MOSFETs, ICs, and sensor interfaces against inductive switching transients and ESD in industrial and automotive electronics.
For engineers reviewing the P4SMA56AHE3/5A datasheet, P4SMA56AHE3/5A pinout, P4SMA56AHE3/5A application, or P4SMA56AHE3/5A equivalent, key selection criteria include its AEC-Q101 qualification, SMA (DO-214AC) package compatibility, unidirectional polarity with cathode band marking, and thermal resistance (RθJA = 120 °C/W) under standard PCB pad layout.
Technical Context
The P4SMA56AHE3/5A operates as a silicon avalanche diode with glass-passivated junction, delivering fast response time (<1 ns) and low incremental surge resistance to limit transient overvoltages before sensitive downstream circuitry is stressed. Its unidirectional configuration enables integration into DC-biased rails where reverse conduction must be blocked.
Rated for 150 °C maximum junction temperature and compliant with J-STD-020 MSL Level 1 (peak reflow 260 °C), it supports automated SMT assembly and meets UL 497B recognition (QVGQ2) for protector classification. The device sustains 40 A non-repetitive forward surge current (8.3 ms half-sine) and exhibits +0.103 %/°C temperature coefficient of VBR, ensuring predictable clamping behavior across operating temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 53.2 V / 58.8 V at 1.0 mA test current - defines reliable avalanche initiation threshold for clamping |
| VWM | 47.8 V maximum - ensures no conduction during normal 56 V nominal rail operation |
| VC @ IPPM | 77.0 V at 5.2 A - limits worst-case transient voltage seen by protected IC or MOSFET |
| PPPM | 400 W with 10/1000 µs waveform - handles high-energy surges from inductive load switching |
| IFSM | 40 A peak forward surge - withstands repetitive motor or relay coil turn-off events |
| RθJA | 120 °C/W - requires minimum 0.2" × 0.2" copper pads per terminal for thermal management |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling and HTRB |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads; cathode indicated by band on body; meets UL 94 V-0 flammability rating and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to lower-potential side of protected line (e.g., ground or return path) |
| Cathode | Current exit point during avalanche clamping | Connected to higher-potential side (e.g., 48 V supply rail); marked with band |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Enables protection against IEC 61000-4-5 Level 3 surges without derating above 91 V |
| Glass-passivated junction | Ensures stable VBR and long-term reliability under humidity and thermal stress |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive powertrain and body electronics applications requiring zero defect rates |
| MSL Level 1 (260 °C peak) | Supports single-reflow SMT processes without moisture-induced popcorn failure |
| UL 497B recognized (QVGQ2) | Meets safety agency requirements for telecom and industrial surge protection modules |
Applications
| Automotive Power Supply Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 48 V battery-supplied ECUs from load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and input stage of DC/DC converter or microcontroller LDO. Use Value: Clamps transients up to 77 V while limiting energy dissipation to prevent thermal runaway in adjacent components. |
Use Scenario: Shielding analog output lines of pressure/temperature sensors in PLC I/O modules. IC Role / Device Role / Timing Role: TVS mounted at connector entry point to shunt ESD and cable discharge events before signal conditioning circuitry. Use Value: Sub-1 ns response prevents latch-up in op-amps and ADC front-ends during ±8 kV contact ESD events. |
| Telecom DC Feeder Protection | Consumer Power Adapter Output Protection |
|
Use Scenario: Safeguarding PoE-powered equipment inputs against induced lightning surges on twisted-pair cables. IC Role / Device Role / Timing Role: Paired unidirectional TVS on each DC feed line (e.g., +48 V and return) in IEEE 802.3af/at-compliant designs. Use Value: 400 W rating absorbs 10/1000 µs surges up to 1 kV without degradation, maintaining isolation integrity. |
Use Scenario: Preventing damage to USB-C PD controller ICs during hot-plug voltage overshoot or adapter fault conditions. IC Role / Device Role / Timing Role: TVS placed at secondary-side output of AC/DC adapter to clamp overvoltage before USB-PD negotiation begins. Use Value: 47.8 V VWM allows safe operation across full 5–20 V PD profile range while clamping faults to ≤77 V. |
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-E3/52 | Higher VBR (55–61 V), SMB package (DO-214AA), 600 W PPPM, RθJA = 100 °C/W | Better suited for higher-power surges but requires larger PCB footprint and different pad layout | Select when 600 W surge margin is required and board space permits SMB footprint |
| 1.5SMC56A-E3/57 | Same VBR/VC, SMC package (DO-214AB), 1500 W PPPM, RθJA = 35 °C/W, higher IPPM (26.8 A) | Designed for high-energy industrial mains protection; not optimized for dense automotive layouts | Choose for legacy SMC-compatible designs needing higher surge endurance, not for space-constrained AEC-Q101 applications |
Compared with SMBJ58A-E3/52 and 1.5SMC56A-E3/57, the P4SMA56AHE3/5A offers optimal balance of AEC-Q101 compliance, compact SMA footprint, and verified 400 W surge capability - making it preferred for new automotive and industrial designs where board area and qualification rigor are critical.
Availability
P4SMA56AHE3/5A is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, telecom power feeds, and consumer USB-C adapters requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P4SMA56AHE3/5A 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, efficiency, and application-specific validation.
The P4SMA Series is engineered for high-reliability transient suppression in automotive, industrial, and telecom systems - combining AEC-Q101 qualification, UL recognition, and optimized thermal performance in compact surface-mount packages.
FAQ
What is the clamping voltage of P4SMA56AHE3/5A at its rated peak pulse current?
The P4SMA56AHE3/5A has a maximum clamping voltage (VC) of 77.0 V at 5.2 A peak pulse current (IPPM) under 10/1000 µs waveform conditions. This value is measured per JEDEC standards and ensures downstream components see no more than 77.0 V during surge events. The P4SMA56AHE3/5A maintains this clamping performance across its specified operating temperature range and after multiple surge cycles when mounted on recommended 0.2" × 0.2" copper pads.
Is P4SMA56AHE3/5A qualified for automotive applications?
Yes, P4SMA56AHE3/5A is AEC-Q101 qualified, as confirmed by the "HE3" suffix and documentation in Vishay's official datasheet (Document Number: 88367, Revision: 09-Jan-2024). This qualification covers stress tests including temperature cycling, high-temperature reverse bias, and accelerated life testing - validating its use in automotive powertrain, body control, and ADAS subsystems. The P4SMA56AHE3/5A is explicitly listed in the AEC-Q101 qualified variants table for the P4SMA family.
What does the "/5A" suffix indicate in P4SMA56AHE3/5A?
The "/5A" suffix in P4SMA56AHE3/5A denotes the packaging configuration: 13-inch diameter plastic tape and reel containing 7500 units. This differs from "/61", which indicates 7-inch reel with 1800 units. The "HE3" portion confirms RoHS-compliant, AEC-Q101 qualified construction, while "5A" specifies bulk packaging format - critical for SMT line feed planning and inventory management. The P4SMA56AHE3/5A is fully compatible with standard SMA pick-and-place equipment.
How does P4SMA56AHE3/5A differ from bidirectional TVS diodes like P4SMA56CA?
The P4SMA56AHE3/5A is unidirectional and blocks reverse current beyond its VWM (47.8 V), making it suitable for DC-biased lines such as 48 V automotive supplies. In contrast, P4SMA56CA is bidirectional with symmetrical clamping in both polarities - used in AC-coupled or floating signal paths. The P4SMA56AHE3/5A features a cathode band marking; P4SMA56CA has no polarity marking. Their electrical specs (VBR, VC) differ slightly due to internal structure, and they are not interchangeable without circuit review.
What is the thermal resistance of P4SMA56AHE3/5A, and how does it affect PCB layout?
The P4SMA56AHE3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on minimum recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes no additional heatsinking; exceeding power dissipation limits without adequate copper area risks junction overheating. To maintain reliability under repetitive surges, designers must allocate sufficient copper pour and avoid narrow traces. The P4SMA56AHE3/5A's RθJA directly determines allowable surge duty cycle in thermally constrained layouts.
P4SMA56AHE3/5A 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:
- Discontinued at Digi-Key
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA56AHE3/5A FAQ
1.How can I place an order for P4SMA56AHE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA56AHE3/5A 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 P4SMA56AHE3/5A reliable?
The price and inventory of P4SMA56AHE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA56AHE3/5A is usually 5 days.
3.What payment methods are accepted for P4SMA56AHE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA56AHE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA56AHE3/5A?
P4SMA56AHE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA56AHE3/5A 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 P4SMA56AHE3/5A?
For technical support, including P4SMA56AHE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA56AHE3/5A requirements.
6.How does Aetrix verify that P4SMA56AHE3/5A is sourced from the original manufacturer or authorized distributors?
All P4SMA56AHE3/5A 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 P4SMA56AHE3/5A meets industry standards.
7.What is the process for return or replacement of P4SMA56AHE3/5A?
All P4SMA56AHE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA56AHE3/5A, 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 P4SMA56AHE3/5A part is unused and in its original packaging.
Return procedure for P4SMA56AHE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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