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Vishay General Semiconductor - Diodes Division P4SMA480AHE3_A/H
- Part No.:
- P4SMA480AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA480AHE3_A/H.pdf
- Description:
- TVS DIODE 408VWM 658VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P4SMA480AHE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for high-voltage surge protection in power rails and interface lines. It features a 480 V breakdown voltage (VBR = 456–504 V at IT = 1.0 mA), 400 W peak pulse power (10/1000 µs), clamping voltage of 658 V at IPPM, and AEC-Q101 qualification for automotive-grade reliability. It protects MOSFETs, DC-DC converters, and industrial power supplies against lightning-induced transients and inductive switching spikes.
For engineers reviewing the P4SMA480AHE3_A/H datasheet, P4SMA480AHE3_A/H pinout, P4SMA480AHE3_A/H application, or P4SMA480AHE3_A/H equivalent, key selection criteria include standoff voltage (VWM = 408 V), clamping ratio (VC/VBR ≈ 1.37), thermal resistance (RθJA = 120 °C/W), unidirectional polarity with cathode band marking, and SMA (DO-214AC) package compatibility with automated SMT assembly.
Technical Context
This TVS operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 MΩ at VWM), then rapidly avalanches below 1 ns to divert surge current away from sensitive downstream circuitry. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low leakage (<1 µA at VWM) across -65 °C to +150 °C operating range.
The device complies with AEC-Q101 stress testing for automotive use and meets J-STD-020 MSL Level 1 (peak reflow ≤260 °C). Its 400 W peak pulse rating applies up to 91 V; above that threshold, derated to 300 W - confirmed for P4SMA480AHE3_A/H per Fig. 2 and Note (1) in Document 88367.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 456 V / 504 V at IT = 1.0 mA - defines precise avalanche onset window for predictable clamping behavior |
| VWM | 408 V - maximum continuous reverse working voltage before leakage exceeds 1 µA; sets safe operating margin vs. system rail |
| VC @ IPPM | 658 V - clamped voltage during 400 W 10/1000 µs surge; determines protected circuit's maximum transient exposure |
| PPPM | 400 W - peak pulse power handling capability; validates robustness against IEC 61000-4-5 Level 4 surges |
| IPPM | 0.46 A - peak pulse current corresponding to 400 W at VC; used to size PCB trace width and grounding paths |
| RθJA | 120 °C/W - junction-to-ambient thermal resistance; informs derating requirements for sustained power dissipation |
| TJmax | +150 °C - maximum junction temperature; enables operation in under-hood automotive environments |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads compliant with J-STD-002 and JESD 22-B102. Cathode indicated by black band on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to lower-potential side of protected line; critical for correct unidirectional orientation in PCB layout |
| Cathode | Current exit terminal during avalanche clamping | Marked with band; ties to higher-potential rail (e.g., +400 V bus); determines direction of surge current diversion path |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and battery management systems requiring extended temperature and reliability validation |
| 400 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 surge immunity up to 4 kV (line-earth) without degradation after repeated events |
| Glass-passivated junction | Ensures stable VBR over lifetime and immunity to humidity-induced parameter drift in harsh environments |
| MSL Level 1 (260 °C peak) | Enables single-reflow soldering without moisture sensitivity concerns, eliminating bake-out steps in high-volume SMT lines |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ESD >15 kV), improving protection fidelity for sensitive gate drivers |
Applications
| Industrial Power Supply Protection | Automotive DC-DC Converter Input |
|---|---|
|
Use Scenario: Protects primary-side rectifier outputs and bulk capacitor inputs in 400 V industrial SMPS against load dump and AC line surges. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between HV rail and ground, clamping transients within 1 ns to prevent MOSFET avalanche failure. Use Value: With VWM = 408 V and VC = 658 V, it provides 12% headroom above nominal 380–400 V DC bus while limiting stress on 650 V rated Si MOSFETs. |
Use Scenario: Shields input stage of 12 V → 48 V bidirectional DC-DC converters in 48 V mild-hybrid vehicles from alternator load dump spikes. IC Role / Device Role / Timing Role: Standoff-rated TVS connected across converter input terminals to clamp 120 V/400 ms load dump pulses per ISO 7637-2 Pulse 5a. Use Value: AEC-Q101 qualification and TJmax = +150 °C ensure uninterrupted operation in under-hood ambient up to +105 °C with full 400 W surge capability retained. |
| Telecom Rectifier Module Protection | Renewable Energy Inverter DC Link |
|
Use Scenario: Safeguards telecom rectifier outputs feeding 48 V distributed power architecture against induced lightning surges on long feeder cables. IC Role / Device Role / Timing Role: High-VWM TVS mounted directly at rectifier output connector to minimize lead inductance and preserve clamping speed. Use Value: 408 V VWM accommodates rectified 380 VAC input (≈537 V peak) while maintaining <1 µA leakage at operating temperature - reducing standby power loss. |
Use Scenario: Guards DC link capacitors in solar string inverters against grid-switching transients and PV array fault currents. IC Role / Device Role / Timing Role: Unidirectional TVS tied between positive DC bus and chassis ground to absorb 10/1000 µs surges from grid-side faults. Use Value: 658 V clamping voltage limits stress on 700 V IGBT modules during 6 kV IEC 61000-4-5 testing, preserving device SOA and lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ480A-E3/5A | Same VBR range (456–504 V), but 400 W rating applies only up to 91 V; above that, rated at 300 W (vs. P4SMA480AHE3_A/H's 400 W up to 91 V, 300 W above) | Lacks AEC-Q101 qualification; not approved for automotive under-hood use | Select when cost-sensitive industrial designs require RoHS-compliant TVS without automotive certification |
| 1.5SMC480A | Higher package thermal resistance (RθJA ≈ 150 °C/W vs. 120 °C/W); same VBR, VC, and PPPM ratings | DO-214AB (SMB) package - larger footprint and lower power density than SMA (DO-214AC) | Choose when legacy board layouts mandate SMB footprint or when higher surge current margin is needed via parallel placement |
Compared with SMAJ480A-E3/5A and 1.5SMC480A, P4SMA480AHE3_A/H delivers superior thermal performance in compact SMA packaging and validated automotive reliability - making it optimal for space-constrained, high-reliability 400 V+ protection where junction temperature rise must be minimized and qualification evidence is mandatory.
Availability
P4SMA480AHE3_A/H is available at Aetrix Electronics and suitable for industrial power supplies, automotive DC-DC converters, and telecom rectifier modules requiring stable component supply with AEC-Q101 compliance and high-voltage transient immunity.
Supply support for P4SMA480AHE3_A/H 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 optimization.
The P4SMA Series targets high-voltage transient suppression in automotive, industrial, and telecom infrastructure, engineered for robust surge handling, tight VBR tolerance, and seamless SMT integration in demanding environments.
FAQ
What is the maximum clamping voltage of the P4SMA480AHE3_A/H under a 400 W 10/1000 µs surge?
The P4SMA480AHE3_A/H has a maximum clamping voltage (VC) of 658 V at its rated peak pulse current (IPPM). This value is measured under standardized 10/1000 µs waveform conditions and represents the upper voltage limit imposed on protected circuitry during a full 400 W transient event. The clamping voltage remains consistent across temperature ranges specified in the datasheet, ensuring predictable protection behavior in both ambient and elevated thermal conditions for the P4SMA480AHE3_A/H.
Is the P4SMA480AHE3_A/H suitable for automotive applications?
Yes, the P4SMA480AHE3_A/H is AEC-Q101 qualified and explicitly designated for automotive use, as confirmed by its "HE3" suffix and documentation in Vishay's P4SMA series datasheet (Rev. 09-Jan-2024, Doc. #88367). It supports operation from -65 °C to +150 °C junction temperature and passes all required stress tests for under-hood deployment. The P4SMA480AHE3_A/H is commonly used in 48 V mild-hybrid DC-DC converters and battery disconnect units where high-voltage surge immunity and qualification evidence are mandatory.
What does the "_A/H" suffix in P4SMA480AHE3_A/H indicate?
The "_A/H" suffix in P4SMA480AHE3_A/H denotes two specific attributes: "A" indicates AEC-Q101 qualification level for the P4SMA480AHE3_A/H device family (per Note 1, p.3), and "H" specifies the packaging format - 7-inch diameter plastic tape and reel with 1800 units per reel (see Ordering Information table, p.3). This ordering code distinguishes it from alternate reels (e.g., "_A/I" = 13-inch reel) and non-automotive variants (e.g., "-E3" without HE3).
How does the P4SMA480AHE3_A/H differ from lower-voltage P4SMA variants like P4SMA150A?
The P4SMA480AHE3_A/H differs from P4SMA150A primarily in voltage ratings: VBR = 456–504 V (vs. 143–158 V), VWM = 408 V (vs. 128 V), and VC = 658 V (vs. 207 V). All share identical SMA (DO-214AC) package, 400 W/300 W pulse rating structure, AEC-Q101 qualification, and thermal characteristics. The P4SMA480AHE3_A/H is engineered specifically for 400 V+ systems such as EV chargers and industrial HVDC links, whereas P4SMA150A targets 100–150 V applications like PoE injectors and servo drives.
What is the standoff voltage (VWM) of the P4SMA480AHE3_A/H, and why is it important?
The standoff voltage (VWM) of the P4SMA480AHE3_A/H is 408 V - the maximum DC or RMS voltage the device can withstand continuously without exceeding 1 µA reverse leakage current. This parameter establishes the safe operating margin between normal system voltage and avalanche onset; selecting a VWM ≥110% of peak operating voltage prevents false triggering while ensuring reliable clamping during overvoltage events. For the P4SMA480AHE3_A/H, this enables robust protection in 380–400 V DC systems such as telecom rectifiers and solar inverters.
P4SMA480AHE3_A/H 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA480AHE3_A/H FAQ
1.How can I place an order for P4SMA480AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA480AHE3_A/H 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 P4SMA480AHE3_A/H reliable?
The price and inventory of P4SMA480AHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA480AHE3_A/H is usually 5 days.
3.What payment methods are accepted for P4SMA480AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA480AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA480AHE3_A/H?
P4SMA480AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA480AHE3_A/H 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 P4SMA480AHE3_A/H?
For technical support, including P4SMA480AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA480AHE3_A/H requirements.
6.How does Aetrix verify that P4SMA480AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All P4SMA480AHE3_A/H 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 P4SMA480AHE3_A/H meets industry standards.
7.What is the process for return or replacement of P4SMA480AHE3_A/H?
All P4SMA480AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA480AHE3_A/H, 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 P4SMA480AHE3_A/H part is unused and in its original packaging.
Return procedure for P4SMA480AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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