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Vishay General Semiconductor - Diodes Division P6SMB350A-E3/52
- Part No.:
- P6SMB350A-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB350A-E3/52.pdf
- Description:
- TVS DIODE 300VWM 482VC DO214AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P6SMB350A-E3/52 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, rated for 350 V standoff voltage (VWM), 333–368 V breakdown voltage (VBR) at 1 mA test current, and 482 V maximum clamping voltage (VC) at 1.24 A peak pulse current (IPPM) under 10/1000 μs waveform - deployed for overvoltage protection of high-voltage DC power rails and industrial sensor interfaces.
For engineers reviewing the P6SMB350A-E3/52 datasheet, P6SMB350A-E3/52 pinout, P6SMB350A-E3/52 application, or P6SMB350A-E3/52 equivalent, key selection criteria include its 600 W peak pulse power rating, unidirectional polarity with cathode band marking, 100 °C/W junction-to-ambient thermal resistance, and RoHS-compliant matte tin-plated leads suitable for automated SMT assembly.
Technical Context
This TVS diode operates as a clamping device that remains non-conductive below its 350 V stand-off voltage and rapidly avalanches above its 333–368 V breakdown threshold to limit transient energy. Its glass-passivated junction ensures stable leakage performance (<1.0 μA at VWM) and robust surge handling up to 100 A IFSM (8.3 ms half-sine).
Designed for single-polarity DC systems, it delivers fast response time (<1.0 ns), low incremental surge resistance, and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. It is not AEC-Q101 qualified - the automotive-grade variant uses suffix "HM3_D" or "HE3_D", not "E3/52".
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 350 V - maximum continuous reverse voltage before significant leakage; defines operating margin for 400 V DC bus protection. |
| VBR (Breakdown Voltage) | 333–368 V at IT = 1 mA - tight tolerance ensures predictable turn-on during transients without premature conduction. |
| VC (Clamping Voltage) | 482 V at IPPM = 1.24 A (10/1000 μs) - limits downstream voltage stress to safe levels during surge events. |
| PPPM (Peak Pulse Power) | 600 W - sustains standardized lightning/surge immunity per IEC 61000-4-5 (10/1000 μs waveform, 0.01% duty cycle). |
| ID (Reverse Leakage) | ≤1.0 μA at 350 V - negligible standby power loss and minimal impact on high-impedance sensing circuits. |
| TJ max. | 150 °C - supports operation in enclosed industrial enclosures with ambient temperatures up to 125 °C when derated. |
| RθJA | 100 °C/W - requires minimum 0.2" × 0.2" copper pads per terminal for thermal management in sustained surge conditions. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads; cathode indicated by a band on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to system ground or low-side reference | Completes clamping path during reverse-transient events; must be routed to lowest-impedance ground plane. |
| Cathode | Current exit point in forward bias; marked with band; connected to protected line | Interfaces directly with high-voltage rail (e.g., 350 V DC input); determines polarity-specific protection direction. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity exposure. |
| 600 W peak pulse power (10/1000 μs) | Provides robust immunity against IEC 61000-4-5 Level 3/4 surges without degradation over rated lifetime. |
| Low profile SMB (DO-214AA) package | Enables high-density PCB layouts and compatibility with standard SMT pick-and-place equipment. |
| RoHS-compliant, commercial grade (E3 suffix) | Meets global environmental compliance requirements without halogen-free cost premium; no AEC-Q101 qualification. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow profiles up to 260 °C peak without baking preconditioning. |
Applications
| Industrial HV DC Power Input Protection | Telecom Rectifier Output Clamping |
|---|---|
|
Use Scenario: Protecting 350–400 V DC input stages of programmable logic controllers (PLCs) and motor drives from load dump and inductive switching transients. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between HV rail and chassis ground to shunt surge current away from upstream rectifiers and downstream DC-DC converters. Use Value: Limits transient voltage to ≤482 V, preventing damage to 500 V-rated electrolytic capacitors and SiC MOSFET gate drivers. |
Use Scenario: Safeguarding output terminals of telecom -48 V to +350 V rectifier modules against lightning-induced surges on distribution bus lines. IC Role / Device Role / Timing Role: Standoff-rated TVS mounted at rectifier module output connector to clamp common-mode transients before entering backplane distribution networks. Use Value: Maintains <1.0 μA leakage at 350 V, avoiding false triggering of downstream undervoltage lockout circuits while clamping 1.24 A surges. |
| High-Voltage Sensor Signal Conditioning | Renewable Energy Inverter DC Link Protection |
|
Use Scenario: Shielding isolated voltage dividers and ADC front-ends in solar string monitoring units exposed to rapid PV array voltage transients. IC Role / Device Role / Timing Role: High-VWM TVS placed across differential sense inputs to suppress ESD and fast-rising transients without loading precision resistive dividers. Use Value: 350 V VWM avoids conduction during normal 300–330 V PV open-circuit operation; 482 V VC protects 500 V isolation amplifiers. |
Use Scenario: Protecting DC link capacitors and IGBT gate drivers in 1000 V-class photovoltaic inverters during grid fault recovery and capacitor pre-charge events. IC Role / Device Role / Timing Role: Unidirectional TVS installed across positive/negative DC bus rails to absorb repetitive switching spikes and rare lightning surges. Use Value: 600 W PPPM rating handles multiple 10/1000 μs surges; 150 °C TJ max enables use in thermally constrained inverter heatsink environments. |
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 | Same VWM (350 V), identical SMB package, but higher VC = 494 V at 1.22 A; slightly lower PPPM = 600 W (same rating, tighter binning) | Marginally higher clamping voltage reduces protection margin for 500 V-rated components | Select P6SMB350A-E3/52 when lower clamping (482 V) and broader VBR tolerance (333–368 V) are required for legacy design compatibility. |
| 1.5SMC350A | Same electrical specs (VWM/VBR/VC), but larger SMC (DO-214AB) package; RθJA = 50 °C/W vs. 100 °C/W; 1.5 kW PPPM rating | Higher thermal mass supports higher average surge duty cycles but requires 30% more board area | Choose P6SMB350A-E3/52 for space-constrained SMT layouts where 600 W single-pulse capability suffices and footprint minimization is critical. |
Compared with SMBJ350A and 1.5SMC350A, P6SMB350A-E3/52 offers the lowest clamping voltage in SMB form factor and optimal balance of surge robustness, thermal footprint, and commercial-grade cost - ideal for high-volume industrial power supplies where layout density and repeatable clamping performance are prioritized over ultra-high-duty-cycle capability.
Availability
P6SMB350A-E3/52 is available at Aetrix Electronics and suitable for industrial HV DC power input protection, telecom rectifier output clamping, high-voltage sensor signal conditioning, and renewable energy inverter DC link protection requiring stable component supply, consistent RoHS-compliant sourcing, and full traceability.
Supply support for P6SMB350A-E3/52 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, TVS devices, and optoelectronics with emphasis on reliability, ruggedness, and application-specific performance.
The P6SMB Series targets cost-sensitive, high-volume industrial and telecom applications requiring standardized 600 W transient suppression in compact SMB packages - designed for ease of SMT integration and broad voltage coverage from 6.8 V to 540 V.
FAQ
What is the clamping voltage of the P6SMB350A-E3/52 under standard surge conditions?
The P6SMB350A-E3/52 has a maximum clamping voltage (VC) of 482 V when subjected to a 10/1000 μs waveform at a peak pulse current (IPPM) of 1.24 A. This value is measured per industry-standard test conditions and defines the upper voltage limit imposed on protected circuitry during transient events. The P6SMB350A-E3/52 maintains this clamping performance consistently across its specified operating temperature range.
Is the P6SMB350A-E3/52 suitable for automotive applications?
No, the P6SMB350A-E3/52 is a commercial-grade part with E3 suffix and is not AEC-Q101 qualified. For automotive use, Vishay specifies variants with HM3_D or HE3_D suffixes (e.g., P6SMB350AHM3_D/H), which undergo additional stress testing and lot traceability. The P6SMB350A-E3/52 lacks the qualification documentation, screening, and packaging markings required for automotive deployment.
What does the "E3/52" suffix indicate in P6SMB350A-E3/52?
The "E3" denotes RoHS-compliant, commercial-grade construction with matte tin-plated leads; "/52" specifies packaging in 7-inch plastic tape-and-reel format containing 750 units. This ordering code confirms lead finish, environmental compliance, and logistics configuration - distinct from M3 (halogen-free), HE3 (AEC-Q101), or HM3 (halogen-free + AEC-Q101) variants. The P6SMB350A-E3/52 is fully compatible with standard J-STD-002 solderability requirements.
How does the thermal resistance of the P6SMB350A-E3/52 affect PCB layout?
The P6SMB350A-E3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W, which assumes mounting on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. To maintain safe junction temperatures during repeated surges, PCB layout must provide these minimum pad sizes and avoid thermal isolation. Reducing pad area increases RθJA and risks exceeding the 150 °C maximum junction temperature - a critical constraint for the P6SMB350A-E3/52 in high-duty-cycle applications.
Can the P6SMB350A-E3/52 be used in bidirectional configurations?
No, the P6SMB350A-E3/52 is a unidirectional TVS diode, identifiable by its cathode band marking. Bidirectional operation requires a CA-suffixed part (e.g., P6SMB350CA). Using the P6SMB350A-E3/52 in reverse-biased AC or floating-ground applications will result in forward conduction and failure. Always verify polarity alignment during placement - the P6SMB350A-E3/52 conducts only when cathode is at higher potential than anode.
P6SMB350A-E3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, 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):
- 1.24A
- Power - Peak Pulse:
- 600W
- 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-214AA (SMB)
P6SMB350A-E3/52 FAQ
1.How can I place an order for P6SMB350A-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB350A-E3/52 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 P6SMB350A-E3/52 reliable?
The price and inventory of P6SMB350A-E3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB350A-E3/52 is usually 5 days.
3.What payment methods are accepted for P6SMB350A-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB350A-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB350A-E3/52?
P6SMB350A-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB350A-E3/52 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 P6SMB350A-E3/52?
For technical support, including P6SMB350A-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB350A-E3/52 requirements.
6.How does Aetrix verify that P6SMB350A-E3/52 is sourced from the original manufacturer or authorized distributors?
All P6SMB350A-E3/52 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 P6SMB350A-E3/52 meets industry standards.
7.What is the process for return or replacement of P6SMB350A-E3/52?
All P6SMB350A-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB350A-E3/52, 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 P6SMB350A-E3/52 part is unused and in its original packaging.
Return procedure for P6SMB350A-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB350A-E3/52 Tags
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