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Vishay General Semiconductor - Diodes Division P4SMA56AHE3_A/I
- Part No.:
- P4SMA56AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA56AHE3_A/I.pdf
- Description:
- TVS DIODE 47.8VWM 77VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,463
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Product details
Overview
P4SMA56AHE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, rated for 56 V breakdown voltage (VBR = 53.2–58.8 V at IT = 1.0 mA), 47.8 V standoff voltage (VWM), and 77.0 V clamping voltage (VC) at 5.2 A peak pulse current (IPPM). It delivers 400 W peak pulse power (10/1000 µs waveform) and is AEC-Q101 qualified for automotive applications including sensor signal line protection.
For engineers reviewing the P4SMA56AHE3_A/I datasheet, P4SMA56AHE3_A/I pinout, P4SMA56AHE3_A/I application, or P4SMA56AHE3_A/I equivalent, this part is selected for robust transient suppression in space-constrained, high-reliability DC power rails and low-voltage signal paths where fast response (<1 ns), low clamping ratio (VC/VBR ≈ 1.35), and MSL Level 1 solderability are required.
Technical Context
The P4SMA56AHE3_A/I operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its specified breakdown threshold. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low incremental surge resistance, enabling precise clamping with minimal overshoot during ESD or inductive switching transients.
Designed for surface-mount assembly on standard 0.2" × 0.2" copper pads, it features matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and meets UL 94 V-0 flammability rating. Thermal resistance is RθJA = 120 °C/W (typical), limiting continuous power dissipation to 3.3 W at TA = 50 °C.
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 repeatable clamping behavior |
| VWM | 47.8 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 77.0 V at 5.2 A (10/1000 µs) - clamping voltage under worst-case surge, determining protected circuit stress level |
| PPPM | 400 W - peak transient energy absorption capability without failure under standardized surge waveform |
| IFSM | 40 A - single half-sine surge current rating (8.3 ms), supporting inrush and fault-current immunity |
| TJ max. | +150 °C - maximum junction temperature enabling operation in under-hood automotive environments |
| Package | SMA (DO-214AC) - industry-standard 2-pin SMD outline with 5.28 mm length, 4.50 mm width, and 2.29 mm height |
Pinout & Package
SMA (DO-214AC) package with axial lead configuration: cathode marked by band on body; anode and cathode terminals aligned along longitudinal axis. Mounting requires 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal per datasheet Fig. 2 derating curve.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side of protected circuit; conducts during forward surge or bias conditions |
| Cathode | Avalanche clamping terminal | Marked end; connected to higher-potential rail; initiates controlled breakdown when reverse V exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity, and mechanical shock per JESD22 standards |
| 400 W peak pulse power | Withstands repetitive 10/1000 µs transients up to 0.01% duty cycle without degradation in clamping performance |
| Glass passivated junction | Ensures stable VBR over lifetime and immunity to moisture-induced parameter drift |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without preconditioning or baking requirements |
| Low clamping ratio (VC/VBR ≈ 1.35) | Minimizes overvoltage stress on downstream ICs such as CAN transceivers or microcontroller I/O pins |
Applications
| Automotive Sensor Signal Protection | Industrial PLC Input Protection |
|---|---|
|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine control units exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor output and MCU ADC input to clamp transients before they reach sensitive front-end circuitry. Use Value: Limits voltage excursion to ≤77.0 V during 100 A load dump events, preserving ADC integrity and preventing latch-up in 3.3 V or 5 V systems. |
Use Scenario: Safeguarding 24 V digital input channels on programmable logic controllers against field-wiring induced surges and relay coil flyback. IC Role / Device Role / Timing Role: Standoff device across input optocoupler supply rail, triggered only during >47.8 V transients to shunt energy to ground. Use Value: Enables reliable operation under IEC 61000-4-5 Level 3 (2 kV) surge testing while maintaining <1 µA leakage at nominal 24 V DC. |
| Telecom Power Rail Clamping | Consumer USB Port ESD Protection |
|
Use Scenario: Secondary-level surge suppression on +48 V telecom power distribution boards adjacent to PoE injectors and DC-DC converters. IC Role / Device Role / Timing Role: Fast-acting clamping element parallel to bulk capacitance, activated within <1 ns to limit voltage rise during lightning-induced surges. Use Value: Absorbs 400 W peak energy without thermal runaway, reducing downstream capacitor stress and extending board-level MTBF. |
Use Scenario: Board-level ESD protection for USB 2.0 data lines and VBUS in portable audio devices subjected to ±8 kV contact discharge (IEC 61000-4-2). IC Role / Device Role / Timing Role: Unidirectional suppressor on VBUS line, leveraging low VC to prevent overvoltage damage to USB controller ICs during hot-plug events. Use Value: Maintains <1 µA leakage at 5 V while clamping ±15 kV ESD events to <77 V, meeting USB-IF compliance requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ56A-E3/5A | Same SMA package, identical VBR (53.2–58.8 V), but rated for 400 W with 1.5× higher IPPM (7.8 A) and higher VC (83.5 V); RoHS-compliant but not AEC-Q101 qualified | Preferred for commercial industrial designs where automotive qualification is unnecessary and higher surge margin is needed | Select SMAJ56A-E3/5A when AEC-Q101 is not mandated and system-level surge testing exceeds 5.2 A peak current |
| 1.5SMC56A | Higher-power SMC package (7.1 mm × 6.2 mm), same VBR range, 1500 W PPPM, VC = 93.6 V at 16.0 A; larger footprint and higher thermal mass | Suitable for high-energy AC mains or motor drive applications where PCB space allows larger SMC outline | Choose 1.5SMC56A only if layout permits larger package and system requires >400 W surge handling without parallel devices |
Compared with SMAJ56A-E3/5A and 1.5SMC56A, the P4SMA56AHE3_A/I offers AEC-Q101 qualification in the smallest form factor (SMA), making it optimal for automotive sensor modules and compact industrial edge nodes where space, reliability, and standardized reflow compatibility are jointly critical.
Availability
P4SMA56AHE3_A/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC inputs, telecom power rails, and consumer USB port protection requiring stable component supply, traceable sourcing, and long-term lifecycle support.
Supply support for P4SMA56AHE3_A/I 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, efficiency, and application-specific optimization.
The P4SMA Series is designed for surface-mount transient suppression in automotive, industrial, and telecom systems where compact size, fast response, and AEC-Q101 compliance are essential for protecting sensitive electronics from ESD and inductive switching events.
FAQ
What is the clamping voltage of P4SMA56AHE3_A/I at its rated peak pulse current?
The P4SMA56AHE3_A/I has a maximum clamping voltage (VC) of 77.0 V at 5.2 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured per Figure 1 in the Vishay datasheet 88367 and defines the upper voltage limit imposed on protected circuits during surge events. The P4SMA56AHE3_A/I maintains this clamping performance across its full operating temperature range (-65 °C to +150 °C) due to its glass-passivated junction.
Is P4SMA56AHE3_A/I suitable for automotive applications?
Yes, the P4SMA56AHE3_A/I is AEC-Q101 qualified, as confirmed by the "HE3" suffix and documentation in Vishay's ordering table (page 3, footnote 1). It is specifically intended for automotive use cases including engine control unit sensor protection, infotainment power rail clamping, and ADAS camera module ESD suppression. Its MSL Level 1 rating and -65 °C to +150 °C operating range further validate suitability for under-hood and cabin environments.
What does the "_A/I" suffix mean in P4SMA56AHE3_A/I?
The "_A/I" suffix in P4SMA56AHE3_A/I indicates two attributes: "A" denotes the revision level (per footnote 1 on page 3, applicable to P4SMA6.8A–P4SMA220A), and "I" specifies the packaging format - 13-inch diameter plastic tape and reel containing 7500 units. This matches the ordering information in Table "ORDERING INFORMATION (Example)" on page 3 of datasheet 88367, confirming full traceability and standard logistics compatibility.
How does P4SMA56AHE3_A/I differ from bidirectional variants like P4SMA56CA?
The P4SMA56AHE3_A/I is unidirectional, meaning it conducts only in reverse bias above VBR and blocks forward current beyond ~3.5 V (VF at 25 A). In contrast, P4SMA56CA is bidirectional with symmetrical clamping in both polarities and no polarity marking. The P4SMA56AHE3_A/I is used where DC bias exists (e.g., 24 V power rails), while P4SMA56CA suits AC-coupled signal lines or floating buses like RS-485. Their VBR, VC, and PPPM ratings differ accordingly.
What is the maximum steady-state power dissipation for P4SMA56AHE3_A/I?
The P4SMA56AHE3_A/I has a maximum steady-state power dissipation (PD) of 3.3 W when mounted on an infinite heatsink at ambient temperature (TA) of 50 °C. At 25 °C, derating begins per Figure 2 in datasheet 88367, yielding ~4.0 W. This rating assumes proper PCB copper pad layout (0.2" × 0.2" per terminal) and accounts for RθJA = 120 °C/W. Exceeding PD risks thermal runaway and permanent degradation of the P4SMA56AHE3_A/I.
P4SMA56AHE3_A/I 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:
- -
- 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_A/I FAQ
1.How can I place an order for P4SMA56AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA56AHE3_A/I 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_A/I reliable?
The price and inventory of P4SMA56AHE3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA56AHE3_A/I is usually 5 days.
3.What payment methods are accepted for P4SMA56AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA56AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA56AHE3_A/I?
P4SMA56AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA56AHE3_A/I 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_A/I?
For technical support, including P4SMA56AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA56AHE3_A/I requirements.
6.How does Aetrix verify that P4SMA56AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All P4SMA56AHE3_A/I 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_A/I meets industry standards.
7.What is the process for return or replacement of P4SMA56AHE3_A/I?
All P4SMA56AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA56AHE3_A/I, 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_A/I part is unused and in its original packaging.
Return procedure for P4SMA56AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA56AHE3_A/I Tags
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