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Vishay General Semiconductor - Diodes Division P4SMA480A-E3/5A
- Part No.:
- P4SMA480A-E3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA480A-E3/5A.pdf
- Description:
- TVS DIODE 408VWM 658VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,794
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Product details
Overview
P4SMA480A-E3/5A from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for high-voltage DC line protection in industrial power supplies and telecom infrastructure. It features a 456 V to 504 V breakdown voltage (VBR), 408 V maximum standoff voltage (VWM), 658 V clamping voltage (VC) at 0.46 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform.
For engineers reviewing the P4SMA480A-E3/5A datasheet, P4SMA480A-E3/5A pinout, P4SMA480A-E3/5A application, or P4SMA480A-E3/5A equivalent, this device serves as a robust overvoltage clamp for 400–480 VDC bus lines, offering AEC-Q101 qualification readiness, low incremental surge resistance, and UL 497B recognition - critical for reliability-critical surge protection design.
Technical Context
The P4SMA480A-E3/5A operates as a unidirectional avalanche diode with glass-passivated junction, optimized for fast response (<1 ns) to ESD and lightning-induced transients. Its thermal resistance (RθJA = 120 °C/W) and 150 °C max junction temperature support operation in compact, convection-cooled layouts without heatsinking.
It delivers 658 V clamping at 0.46 A IPPM under 10/1000 µs waveform, with 0.110 %/°C temperature coefficient of VBR, ensuring stable threshold behavior across industrial temperature ranges. The SMA (DO-214AC) package enables automated placement and meets J-STD-020 MSL Level 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 456 V to 504 V - defines precise avalanche initiation range for predictable overvoltage triggering |
| VWM | 408 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA |
| VC @ IPPM | 658 V at 0.46 A - clamped voltage during 10/1000 µs surge, limiting downstream stress |
| PPPM | 400 W - peak transient power handling capability per standard 10/1000 µs waveform |
| IFSM | 40 A - single half-sine surge current rating (8.3 ms), supporting inrush and fault-current events |
| TJ max | +150 °C - enables deployment in high-ambient environments like base station power modules |
| Package | SMA (DO-214AC) - industry-standard SMD outline with 5.0 mm × 5.0 mm copper pad thermal footprint |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, unidirectional polarity marked by cathode band. Terminals are matte tin-plated, solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to system ground or low-side reference | Provides return path during clamping; must be routed with low-inductance ground plane |
| Cathode | Protected line connection; marked by band on package body | Connected to high-voltage rail (e.g., 480 VDC input); absorbs transient energy into ground |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Enables robust protection against IEC 61000-4-5 Level 4 surges on 400–480 VDC lines without derating |
| Glass-passivated junction | Ensures long-term stability and low leakage (<1 µA at VWM) across temperature and humidity stress |
| UL 497B recognized (QVGQ2) | Validates compliance for telecom and industrial signal/power interface protection per safety standards |
| AEC-Q101 qualified option available | Supports automotive-grade reliability requirements when ordered as P4SMA480AHE3_B/I or similar |
| MSL Level 1 (260 °C peak) | Permits standard reflow assembly without moisture sensitivity concerns or baking preconditioning |
Applications
| Industrial Power Supply Input Protection | Telecom DC Feeder Line Protection |
|---|---|
Use Scenario: 480 VDC input stage of DIN-rail mounted AC/DC converters exposed to utility switching transients and capacitor bank discharge events. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between line and chassis ground to clamp surges above 408 V. Use Value: Limits transient voltage to ≤658 V, protecting downstream rectifiers, bulk capacitors, and control ICs from destructive overstress. |
Use Scenario: -48 V or +48 V DC power feeders in central office equipment subject to lightning-induced longitudinal surges. IC Role / Device Role / Timing Role: High-voltage standoff TVS used in series with gas discharge tube (GDT) for hybrid primary protection. Use Value: Provides fast-response secondary clamping after GDT fires, reducing let-through energy to <100 mJ for sensitive DC-DC controllers. |
| Renewable Energy Inverter DC Link Protection | Railway Signaling Power Interface |
Use Scenario: DC link monitoring circuitry in solar string inverters where PV array open-circuit voltage reaches 450–500 VDC. IC Role / Device Role / Timing Role: Standoff-rated TVS guarding analog sensing inputs and isolation barrier drivers against module-level surges. Use Value: Maintains 408 V working voltage margin while clamping fast transients to protect 12-bit ADC references and optocoupler LEDs. |
Use Scenario: 110 VDC signaling power interface in European railway signaling cabinets subjected to EN 50121-4 conducted surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on redundant power inputs feeding safety-critical relay logic boards. Use Value: Meets EN 61000-4-5 4 kV/2 Ω requirement with verified 658 V clamping, preventing false tripping and contact welding. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ480A | Same VWM/VBR/VC specs but SMB (DO-214AA) package - 20 % larger footprint, 10 % higher RθJA | Preferred where board space allows larger pad layout and higher thermal mass improves surge endurance | Select when thermal derating margin is needed beyond P4SMA480A-E3/5A's 120 °C/W rating |
| SMCJ480A | Higher 5.0 kW peak power rating, same VWM/VBR, but SMC (DO-214AB) package - 3× footprint area, 2× weight | Used in high-reliability aerospace or traction systems requiring >1000 surge cycles without degradation | Choose only if 400 W is insufficient and mechanical constraints permit larger SMC package |
Compared with SMBJ480A and SMCJ480A, the P4SMA480A-E3/5A delivers identical electrical protection performance in the smallest possible surface-mount form factor (SMA), enabling dense PCB layouts in space-constrained telecom and industrial modules while maintaining full UL 497B recognition and AEC-Q101 upgrade path.
Availability
P4SMA480A-E3/5A is available at Aetrix Electronics and suitable for industrial power supplies, telecom DC feeder protection, renewable energy inverters, and railway signaling interfaces requiring stable component supply with RoHS-compliant, commercial-grade traceability.
Supply support for P4SMA480A-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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The P4SMA Series is engineered for high-voltage transient suppression in harsh environments, targeting industrial, telecom, and transportation systems where consistent clamping behavior and safety certification are mandatory.
FAQ
What is the maximum clamping voltage of the P4SMA480A-E3/5A under standard test conditions?
The P4SMA480A-E3/5A has a maximum clamping voltage (VC) of 658 V when subjected to its rated peak pulse current of 0.46 A using the 10/1000 µs waveform. This value is measured per Figure 1 in the Vishay datasheet 88367 and represents the upper limit of voltage seen by protected circuitry during a defined surge event. The P4SMA480A-E3/5A maintains this clamping performance across its full operating temperature range (-65 °C to +150 °C).
Is the P4SMA480A-E3/5A suitable for automotive applications?
The P4SMA480A-E3/5A itself is a commercial-grade part (E3 suffix), but Vishay offers AEC-Q101 qualified variants in the same P4SMA family - specifically P4SMA480AHE3_B and P4SMA480AHM3_B - which carry the HE3/HM3 suffix and revision code "B". The P4SMA480A-E3/5A does not meet AEC-Q101 requirements out-of-the-box; designers requiring automotive qualification must specify the HE3_B or HM3_B version explicitly.
What is the standoff voltage rating of the P4SMA480A-E3/5A, and how does it relate to system operating voltage?
The P4SMA480A-E3/5A has a maximum standoff voltage (VWM) of 408 V, meaning it remains in high-impedance state below this DC or RMS voltage level with leakage <1 µA. For reliable operation, system nominal voltage must stay ≤80–85 % of VWM; thus, the P4SMA480A-E3/5A is intended for circuits with up to ~347 V continuous operating voltage (e.g., 400 VDC nominal rails with tolerance margins). This ensures no unintended conduction during normal operation.
Does the P4SMA480A-E3/5A have UL safety certification?
Yes, the P4SMA480A-E3/5A is Underwriters Laboratories (UL) recognized under standard UL 497B for protectors, with file number E136766. This applies to both unidirectional and bidirectional variants in the P4SMA family. The UL recognition confirms suitability for use in telecommunications and industrial equipment where safety agency approval is required for transient protection components. The P4SMA480A-E3/5A carries this certification as part of its base qualification.
What is the thermal resistance and power dissipation capability of the P4SMA480A-E3/5A in typical PCB mounting?
The P4SMA480A-E3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. Its steady-state power dissipation (PD) is rated at 3.3 W at TA = 50 °C. This means the device can safely dissipate up to 3.3 W continuously under those thermal conditions - sufficient for leakage-based heating during long-term operation near VWM, but not for repetitive surge duty. The P4SMA480A-E3/5A relies on transient energy absorption rather than continuous power handling.
P4SMA480A-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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 408V
- Voltage - Breakdown (Min):
- 456V
- Voltage - Clamping (Max) @ Ipp:
- 658V
- Current - Peak Pulse (10/1000µs):
- 460mA
- Power - Peak Pulse:
- 300W
- 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)
P4SMA480A-E3/5A FAQ
1.How can I place an order for P4SMA480A-E3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA480A-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 P4SMA480A-E3/5A reliable?
The price and inventory of P4SMA480A-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 P4SMA480A-E3/5A is usually 5 days.
3.What payment methods are accepted for P4SMA480A-E3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA480A-E3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA480A-E3/5A?
P4SMA480A-E3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA480A-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 P4SMA480A-E3/5A?
For technical support, including P4SMA480A-E3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA480A-E3/5A requirements.
6.How does Aetrix verify that P4SMA480A-E3/5A is sourced from the original manufacturer or authorized distributors?
All P4SMA480A-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 P4SMA480A-E3/5A meets industry standards.
7.What is the process for return or replacement of P4SMA480A-E3/5A?
All P4SMA480A-E3/5A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA480A-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 P4SMA480A-E3/5A part is unused and in its original packaging.
Return procedure for P4SMA480A-E3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA480A-E3/5A Tags
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