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Vishay General Semiconductor - Diodes Division P4SMA350AHE3_A/H
- Part No.:
- P4SMA350AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA350AHE3_A/H.pdf
- Description:
- TVS DIODE 300VWM 482VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,077
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Product details
Overview
P4SMA350AHE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, rated for 350 V standoff voltage (VWM), 368 V minimum breakdown voltage (VBR), and 482 V maximum clamping voltage (VC) at 0.62 A peak pulse current (IPPM), designed to protect power rails and signal lines in high-voltage industrial power supplies and motor drive circuits.
For engineers reviewing the P4SMA350AHE3_A/H datasheet, P4SMA350AHE3_A/H pinout, P4SMA350AHE3_A/H application, or P4SMA350AHE3_A/H equivalent, this device delivers AEC-Q101 qualification, 400 W peak pulse power (10/1000 µs), low thermal resistance (RθJL = 30 °C/W), and RoHS-compliant matte tin-plated leads - critical for automotive-grade surge protection design validation.
Technical Context
The P4SMA350AHE3_A/H operates as a unidirectional clamping TVS diode with avalanche breakdown behavior, triggered when reverse voltage exceeds its 368 V minimum breakdown threshold. Its glass-passivated junction ensures stable leakage performance (<1.0 µA at VWM) and fast response time (<1.0 ps), enabling effective suppression of ESD and lightning-induced transients.
Thermally, it features a junction-to-lead thermal resistance of 30 °C/W and a maximum operating junction temperature of +150 °C, supporting reliable operation under repetitive surge conditions when mounted on recommended 0.2" × 0.2" copper pads. Its MSL Level 1 rating confirms suitability for standard SMT reflow profiles up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 300 V - Maximum continuous reverse working voltage before conduction begins; defines safe operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 333–368 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on during overvoltage events. |
| VC (Clamping Voltage) | 482 V at IPPM = 0.62 A - Peak voltage seen by protected circuit during 10/1000 µs transient; determines stress on downstream components. |
| PPPM (Peak Pulse Power) | 400 W - Sustained energy absorption capability under standardized 10/1000 µs waveform; validates robustness against IEC 61000-4-5 surges. |
| ID (Reverse Leakage) | <1.0 µA at 300 V - Minimal standby power loss and signal integrity impact in high-impedance sensing or bias networks. |
| TJ max. | +150 °C - Enables deployment in under-hood automotive modules and industrial enclosures without derating below ambient 125 °C. |
| AEC-Q101 Qualified | Yes - Certified for automotive electronics per stress test requirements including HTOL, TC, and HAST; supports PPAP documentation. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; cathode indicated by band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference node | Connected to system ground or lower-potential rail; defines polarity-sensitive placement in unidirectional protection schemes. |
| Cathode | Clamping output / Surge current sink | Connected to protected line (e.g., 300 V DC bus); conducts avalanche current to ground during overvoltage, limiting voltage to ≤482 V. |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Enables compliance with IEC 61000-4-5 Level 4 (4 kV surge) on 300 V systems without external series impedance. |
| Glass passivated chip junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity exposure (J-STD-020 MSL Level 1). |
| AEC-Q101 qualified (HE3 suffix) | Validates reliability for automotive powertrain and body control modules requiring zero-failure field performance. |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., MOSFET switching noise), improving protection fidelity. |
| RoHS-compliant & halogen-free option available | Supports environmental compliance for EU automotive OEMs and industrial equipment sold into regulated markets. |
Applications
| Industrial DC Power Supply Protection | Automotive High-Voltage Battery Monitoring |
|---|---|
|
Use Scenario: Protecting 300 V DC output rails in switch-mode power supplies against load dump and inductive kickback. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed across output capacitor to clamp surges before they reach regulation ICs or downstream converters. Use Value: Limits transient voltage to ≤482 V, preventing damage to 600 V-rated MOSFETs and optocouplers while maintaining <1 µA leakage at nominal 300 V operation. |
Use Scenario: Safeguarding battery cell voltage sense lines in 400 V EV battery management systems (BMS) exposed to ESD and relay bounce. IC Role / Device Role / Timing Role: Clamping element on analog front-end inputs to isolate precision ADCs from ±8 kV contact ESD per ISO 10605. Use Value: Delivers sub-nanosecond response and <1 µA leakage at 300 V, preserving measurement accuracy while meeting AEC-Q101 qualification for automotive BMS deployment. |
| Motor Drive DC Link Protection | Telecom Rectifier Module Surge Suppression |
|
Use Scenario: Absorbing commutation spikes on 350 V DC link capacitors in three-phase inverters driving HVAC compressors or pumps. IC Role / Device Role / Timing Role: Parallel-connected TVS across DC bus to suppress >1 kV transients generated by IGBT turn-off. Use Value: Withstands 400 W peak pulse power and clamps to 482 V, protecting 650 V IGBT gate drivers and reducing need for snubber networks. |
Use Scenario: Protecting -48 V telecom rectifier outputs against lightning-induced surges entering via AC input or battery backup lines. IC Role / Device Role / Timing Role: Standoff-rated TVS on secondary-side DC output to limit surge propagation to connected base station controllers. Use Value: Provides 300 V standoff with 482 V clamping, compatible with legacy -48 V systems upgraded to support higher-voltage auxiliary rails up to 300 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 |
|---|---|---|---|
| SMBJ350A-E3/52 (Vishay) | Same VWM/VBR/VC specs but SMB (DO-214AA) package; 50 % larger footprint and 20 % higher RθJA (145 °C/W vs. 120 °C/W). | Better suited for manual prototyping or lower-density layouts where SMA's 0.208" length is restrictive. | Select SMBJ350A-E3/52 only if board space allows larger package and thermal margin permits higher junction rise. |
| 1.5KE350A (ON Semiconductor) | Through-hole DO-201 package; identical electrical specs but 3× higher mounting thermal resistance and no AEC-Q101 qualification. | Restricted to non-automotive industrial equipment with accessible service points and no vibration or thermal cycling requirements. | Choose 1.5KE350A only for cost-sensitive, non-automotive applications where automated SMT assembly is not required. |
Compared with SMBJ350A-E3/52 and 1.5KE350A, the P4SMA350AHE3_A/H offers superior SMT manufacturability, AEC-Q101 qualification, and lower thermal resistance in the smallest surface-mount form factor - making it the preferred choice for space-constrained, automotive-qualified, and thermally demanding designs.
Availability
P4SMA350AHE3_A/H is available at Aetrix Electronics and suitable for industrial power supplies, automotive battery monitoring systems, motor drive DC links, and telecom rectifier modules requiring stable component supply, AEC-Q101 traceability, and RoHS-compliant sourcing.
Supply support for P4SMA350AHE3_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-reliability transient suppression in automotive, industrial, and telecom infrastructure, delivering standardized 400 W surge capability in compact SMA packages with AEC-Q101 and RoHS compliance built-in.
FAQ
What is the maximum clamping voltage of the P4SMA350AHE3_A/H under a 10/1000 µs surge?
The P4SMA350AHE3_A/H has a maximum clamping voltage (VC) of 482 V at 0.62 A peak pulse current (IPPM) under the standardized 10/1000 µs waveform. This value is measured per Figure 1 in Vishay document 88367 and defines the upper voltage limit imposed on protected circuitry during surge events. The P4SMA350AHE3_A/H maintains this clamping performance across its full operating temperature range (-65 °C to +150 °C) when mounted per recommended pad layout.
Is the P4SMA350AHE3_A/H qualified for automotive applications?
Yes, the P4SMA350AHE3_A/H is AEC-Q101 qualified, as confirmed by its HE3 suffix and documentation in Vishay's P4SMA Series datasheet (Rev. 09-Jan-2024, Doc. #88367). It has passed stress tests including high-temperature operating life (HTOL), temperature cycling (TC), and highly accelerated stress testing (HAST), making it suitable for automotive powertrain, body control, and battery management systems requiring zero-failure field reliability.
What is the standoff voltage rating of the P4SMA350AHE3_A/H?
The P4SMA350AHE3_A/H has a maximum working peak reverse voltage (VWM) of 300 V, meaning it remains in high-impedance state and draws less than 1.0 µA leakage current up to this voltage. This 300 V rating provides a 16.7 % safety margin below its minimum breakdown voltage of 333 V, ensuring stable operation in 300 V DC systems such as industrial power supplies and EV auxiliary converters.
Does the P4SMA350AHE3_A/H have a bidirectional variant?
No, the P4SMA350AHE3_A/H is strictly unidirectional, as indicated by the "A" suffix and absence of "CA" in its part number. Bidirectional variants in the P4SMA family use the "CA" suffix (e.g., P4SMA350CA), which are functionally distinct and not interchangeable. The P4SMA350AHE3_A/H must be oriented with its cathode band toward the protected line and anode to ground to operate correctly.
What package type does the P4SMA350AHE3_A/H use, and what are its key mechanical features?
The P4SMA350AHE3_A/H uses the SMA (DO-214AC) surface-mount package: 0.208" × 0.157" outline with 0.078" lead width, matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and UL 94 V-0 molding compound. Its low profile and MSL Level 1 rating support compatibility with standard SMT reflow profiles peaking at 260 °C, and its 30 °C/W junction-to-lead thermal resistance enables efficient heat transfer to PCB copper pads.
P4SMA350AHE3_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):
- 300V
- Voltage - Breakdown (Min):
- 333V
- Voltage - Clamping (Max) @ Ipp:
- 482V
- Current - Peak Pulse (10/1000µs):
- 620mA
- 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)
P4SMA350AHE3_A/H FAQ
1.How can I place an order for P4SMA350AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA350AHE3_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 P4SMA350AHE3_A/H reliable?
The price and inventory of P4SMA350AHE3_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 P4SMA350AHE3_A/H is usually 5 days.
3.What payment methods are accepted for P4SMA350AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA350AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA350AHE3_A/H?
P4SMA350AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA350AHE3_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 P4SMA350AHE3_A/H?
For technical support, including P4SMA350AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA350AHE3_A/H requirements.
6.How does Aetrix verify that P4SMA350AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All P4SMA350AHE3_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 P4SMA350AHE3_A/H meets industry standards.
7.What is the process for return or replacement of P4SMA350AHE3_A/H?
All P4SMA350AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA350AHE3_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 P4SMA350AHE3_A/H part is unused and in its original packaging.
Return procedure for P4SMA350AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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