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Vishay General Semiconductor - Diodes Division P6SMB350A-E3/5B
- Part No.:
- P6SMB350A-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB350A-E3/5B.pdf
- Description:
- TVS DIODE 300VWM 482VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,048
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Product details
Overview
P6SMB350A-E3/5B 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), 368 V maximum breakdown voltage (VBR), and 600 W peak pulse power (10/1000 μs). It clamps transients to 482 V at 1.24 A peak pulse current and is used to protect power rails and signal lines in industrial power supplies and motor drive circuits.
For engineers reviewing the P6SMB350A-E3/5B datasheet, P6SMB350A-E3/5B pinout, P6SMB350A-E3/5B application, or P6SMB350A-E3/5B equivalent, key selection criteria include its 300 V reverse leakage limit at VWM, ±0.11 %/°C temperature coefficient of VBR, RoHS-compliant matte tin plating, and suitability for automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a unidirectional clamping TVS diode with glass-passivated junction and low incremental surge resistance. Its 100 °C/W junction-to-ambient thermal resistance and 150 °C maximum junction temperature support operation under repetitive transient stress when mounted per recommended pad layout.
The P6SMB350A-E3/5B delivers 482 V clamping voltage at 1.24 A IPPM under 10/1000 μs waveform, with 300 V reverse leakage at 300 V standoff and 0.11 %/°C VBR temperature coefficient - enabling stable overvoltage protection across automotive and industrial ambient ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 300 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR (Breakdown) | 333–368 V at 1 mA - guaranteed conduction onset range defining clamping threshold |
| VC (Clamping) | 482 V at 1.24 A IPPM - peak voltage seen by protected circuit during 10/1000 μs surge |
| PPPM | 600 W - transient energy absorption capability under standardized 10/1000 μs waveform |
| ID (Leakage) | 1.0 μA at 300 V - minimal reverse current during normal operation, preserving system efficiency |
| TJ max | +150 °C - maximum junction temperature enabling use in high-ambient industrial environments |
| RθJA | 100 °C/W - thermal resistance indicating need for adequate PCB copper area for sustained power dissipation |
Pinout & Package
Package: SMB (DO-214AA), 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 | Current entry point in forward bias; connected to protected line's lower-potential side | Enables unidirectional clamping from cathode to anode during overvoltage events |
| Cathode | Current exit point in forward bias; marked with band; connected to higher-potential rail or ground | Determines polarity-specific protection direction - critical for correct placement on power rails |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Supports robust protection against IEC 61000-4-5 Level 4 surges without degradation |
| Glass passivated chip junction | Ensures long-term reliability and stable VBR under thermal cycling and humidity stress |
| MSL Level 1 (260 °C peak reflow) | Compatible with standard lead-free SMT reflow profiles without moisture sensitivity concerns |
| AEC-Q101 qualified variant available (_B suffix) | Validated for automotive power electronics where qualification evidence is mandatory |
| RoHS-compliant, halogen-free option (M3 suffix) | Meets environmental compliance requirements for industrial and consumer end equipment |
Applications
| Industrial Power Supply Protection | Motor Drive DC Bus Clamping |
|---|---|
Use Scenario: Protecting 300–400 V DC output rails in switch-mode power supplies against load dump and inductive kickback. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between output rail and ground. Use Value: Limits transient overshoot to ≤482 V, preventing damage to downstream regulators and controllers rated for 500 V max. |
Use Scenario: Suppressing switching spikes on H-bridge DC bus in BLDC motor drives operating near 350 V nominal. IC Role / Device Role / Timing Role: Fast-response voltage clamp absorbing energy from MOSFET turn-off transients. Use Value: Maintains bus voltage within safe margin of 600 V IGBT/MOSFET breakdown rating during 1.24 A surge events. |
| Telecom Line Interface Protection | Renewable Energy Inverter DC Link |
Use Scenario: Safeguarding AC/DC converter inputs in telecom rectifiers exposed to lightning-induced surges on distribution lines. IC Role / Device Role / Timing Role: Primary-level unidirectional transient suppressor on bulk capacitor input stage. Use Value: Withstands 600 W pulses while adding <1.0 μA leakage, preserving no-load efficiency and standby compliance. |
Use Scenario: Clamping voltage excursions on photovoltaic inverter DC link during grid fault recovery or rapid MPPT transients. IC Role / Device Role / Timing Role: Standoff-rated TVS placed across DC link capacitors to absorb regenerative energy spikes. Use Value: 300 V VWM aligns with 1000 V-class inverter DC links operating at ~350–700 V, ensuring reliable hold-off during normal operation. |
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 | Same VWM/VBR/VC specs; identical SMB package; 750-piece tape-and-reel vs. 3200-piece 13″ reel | Identical protection performance; differs only in packaging format and reel size | Select P6SMB350A-E3/5B for high-volume SMT line feed requiring larger reels and reduced changeover frequency |
| 1.5SMC350A | Higher RθJA (125 °C/W); same 300–368 V VBR range but 1.5 kW peak power rating in larger SMC package | Requires more PCB area; suited for higher-energy surges where 600 W is insufficient | Choose 1.5SMC350A only if system-level testing confirms >600 W surge energy exposure and board space permits SMC footprint |
Compared with SMBJ350A-E3/52, P6SMB350A-E3/5B offers identical electrical performance with optimized logistics for high-throughput production; versus 1.5SMC350A, it trades higher power handling for smaller footprint and lower thermal resistance in constrained layouts.
Availability
P6SMB350A-E3/5B is available at Aetrix Electronics and suitable for industrial power supplies, motor drive systems, and renewable energy inverters requiring stable component supply, RoHS compliance, and AEC-Q101-qualified alternatives.
Supply support for P6SMB350A-E3/5B 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 designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices, with emphasis on reliability, ruggedness, and application-specific validation.
The P6SMB Series targets cost-sensitive, high-volume industrial and automotive applications requiring standardized 600 W transient suppression in compact SMB packages, with variants supporting commercial, halogen-free, and AEC-Q101 requirements.
FAQ
What is the maximum clamping voltage of the P6SMB350A-E3/5B under standard test conditions?
The P6SMB350A-E3/5B has a maximum clamping voltage (VC) of 482 V when subjected to a 10/1000 μs waveform at 1.24 A peak pulse current. This value is measured per JEDEC standards and defines the upper voltage limit imposed on protected circuitry during transient events. The P6SMB350A-E3/5B maintains this clamping performance across its specified operating temperature range and is validated with 0.2" × 0.2" copper pads per datasheet mounting recommendations.
Is the P6SMB350A-E3/5B suitable for automotive applications?
The base P6SMB350A-E3/5B is a commercial-grade part; however, the AEC-Q101 qualified version is designated P6SMB350AHM3_D/I or P6SMB350AHE3_D/I (with _D suffix for 250–540 V range). While P6SMB350A-E3/5B itself is not AEC-Q101 certified, its design foundation and thermal robustness make it suitable for non-safety-critical industrial applications. For automotive use, specify the _D-suffixed AEC-Q101 variant of P6SMB350A-E3/5B.
What is the reverse leakage current specification for the P6SMB350A-E3/5B at its rated standoff voltage?
The P6SMB350A-E3/5B exhibits a maximum reverse leakage current (ID) of 1.0 μA when biased at its rated standoff voltage of 300 V (VWM), tested at TA = 25 °C. This low leakage ensures minimal power loss in standby or no-load conditions and supports high-efficiency system designs. The P6SMB350A-E3/5B maintains this specification across its full operating temperature range, with leakage increasing predictably per datasheet derating curves.
Does the P6SMB350A-E3/5B have a bidirectional variant?
No - the P6SMB350A-E3/5B is strictly a unidirectional TVS diode, indicated by the "A" suffix. Bidirectional variants in the P6SMB series use the "CA" suffix (e.g., P6SMB350CA), which provide symmetrical clamping in both polarities. The P6SMB350A-E3/5B features a cathode band marking and must be oriented correctly in-circuit to protect against positive-going transients only; using it in bidirectional configurations will result in improper protection.
What is the thermal resistance junction-to-ambient for the P6SMB350A-E3/5B, and how does it affect layout?
The P6SMB350A-E3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on the minimum recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value means each watt of sustained power dissipation raises junction temperature by ~100 °C above ambient - so layout must allocate sufficient copper area to keep TJ ≤ 150 °C. The P6SMB350A-E3/5B datasheet specifies exact pad dimensions and recommends thermal vias for higher-power scenarios.
P6SMB350A-E3/5B 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-E3/5B FAQ
1.How can I place an order for P6SMB350A-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB350A-E3/5B 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-E3/5B reliable?
The price and inventory of P6SMB350A-E3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB350A-E3/5B is usually 5 days.
3.What payment methods are accepted for P6SMB350A-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB350A-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB350A-E3/5B?
P6SMB350A-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB350A-E3/5B 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-E3/5B?
For technical support, including P6SMB350A-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB350A-E3/5B requirements.
6.How does Aetrix verify that P6SMB350A-E3/5B is sourced from the original manufacturer or authorized distributors?
All P6SMB350A-E3/5B 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-E3/5B meets industry standards.
7.What is the process for return or replacement of P6SMB350A-E3/5B?
All P6SMB350A-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB350A-E3/5B, 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-E3/5B part is unused and in its original packaging.
Return procedure for P6SMB350A-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB350A-E3/5B Tags
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