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Vishay General Semiconductor - Diodes Division P6SMB350AHE3_A/I
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- Part No.:
- P6SMB350AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB350AHE3_A/I.pdf
- Description:
- TVS DIODE 300VWM 482VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,021
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Product details
Overview
P6SMB350AHE3_A/I 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 482 V clamping voltage (VC) at 1.24 A peak pulse current (IPPM), designed to protect power rails and signal lines in high-voltage industrial power supplies and telecom rectifier stages.
For engineers reviewing the P6SMB350AHE3_A/I datasheet, P6SMB350AHE3_A/I pinout, P6SMB350AHE3_A/I application, or P6SMB350AHE3_A/I equivalent, key selection criteria include its 600 W peak pulse power rating (10/1000 μs), AEC-Q101 qualification status, RoHS-compliant matte tin-plated terminals, and thermal resistance of 100 °C/W junction-to-ambient - critical for high-reliability overvoltage protection in constrained PCB layouts.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, leveraging glass-passivated silicon junction technology for stable avalanche behavior under repetitive transient stress. Its 10/1000 μs waveform response delivers consistent clamping performance up to 150 °C junction temperature, with derating applied above 25 °C ambient per Fig. 2.
The device meets J-STD-020 MSL Level 1 moisture sensitivity and withstands 260 °C lead-free reflow peak temperature. It exhibits low incremental surge resistance and fast response time (<1 ns), enabling effective suppression of ESD, lightning-induced surges, and inductive switching transients in DC power distribution networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 300 V - Maximum continuous reverse operating voltage before clamping initiates; defines safe DC rail margin for 350 V nominal systems. |
| VBR (Breakdown Voltage) | 333–368 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on during overvoltage events without premature conduction. |
| VC (Clamping Voltage) | 482 V at IPPM = 1.24 A - Peak voltage seen by protected circuit during 10/1000 μs surge; determines downstream component voltage stress. |
| PPPM (Peak Pulse Power) | 600 W - Sustained energy absorption capability under standardized surge waveform; validates robustness against IEC 61000-4-5 Level 4 transients. |
| TJ max. | 150 °C - Maximum allowable junction temperature; supports operation in enclosed industrial enclosures with limited airflow. |
| RθJA | 100 °C/W - Thermal resistance from junction to ambient on standard 0.2" × 0.2" copper pads; informs heatsinking requirements for sustained surge duty cycles. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile plastic case with UL 94 V-0 flammability rating; matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to lower-potential side of protected line. | Provides defined current path during clamping; must be routed to ground or return rail in unidirectional configuration. |
| Cathode (banded end) | Current exit terminal in forward bias; connected to higher-potential side (e.g., power rail). | Identifies polarity for correct placement; reverse connection disables clamping function and risks catastrophic failure. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - suitable for industrial control units requiring extended lifetime validation. |
| Glass passivated junction | Ensures stable leakage current (<1 μA at VWM) and repeatable breakdown characteristics across 1000+ surge events without parameter drift. |
| 600 W peak pulse power (10/1000 μs) | Supports protection of 48 V–400 V DC systems against IEC 61000-4-5 Combination Wave surges up to 4 kV (open-circuit) / 2 kA (short-circuit). |
| MSL Level 1, 260 °C reflow compatible | Enables single-pass lead-free assembly without pre-baking; eliminates moisture-related popcorning risk in high-volume SMT production. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (<100 ns rise time), improving protection margin for sensitive gate drivers and ADC front-ends. |
Applications
| Industrial Power Supply Input Protection | Telecom Rectifier Stage Clamping |
|---|---|
Use Scenario: Protecting AC/DC front-end rectifiers and bulk capacitors from lightning-induced surges on 380 VAC-derived 540 VDC bus lines. IC Role / Device Role / Timing Role: Unidirectional TVS placed across DC output of bridge rectifier to clamp positive-going transients before they reach downstream converters. Use Value: Limits transient voltage to ≤482 V, preventing overvoltage failure of 600 V-rated MOSFETs and electrolytic capacitors while surviving repeated 600 W pulses. |
Use Scenario: Safeguarding -48 V telecom power shelves against load-dump spikes and hot-swap transients during module insertion/removal. IC Role / Device Role / Timing Role: Mounted directly at rectifier output to suppress reverse-polarity surges and inductive kickback from relay coils and fan motors. Use Value: Clamps 1.24 A surge within 1 ns, maintaining system uptime by avoiding false trips in redundant power controllers and protecting PMBus communication lines. |
| High-Voltage Motor Drive DC Link | Renewable Energy Inverter DC Bus |
Use Scenario: Shielding IGBT gate driver ICs and current sense shunts from commutation spikes in 3-phase 400 VAC-fed drives. IC Role / Device Role / Timing Role: Connected between DC+ and DC− rails near power stage to absorb regenerative energy spikes during rapid deceleration. Use Value: Withstands 150 °C junction temperature and provides 100 °C/W thermal path, enabling reliable operation in sealed motor control cabinets without forced cooling. |
Use Scenario: Protecting MPPT controller inputs and string combiner boxes from induced surges in solar farm DC strings operating up to 1000 V. IC Role / Device Role / Timing Role: Installed at string-level input to clamp lightning-induced common-mode transients before they propagate into isolation amplifiers and microcontrollers. Use Value: Delivers 600 W pulse handling with <1 μA leakage at 300 V, minimizing standby power loss while meeting IEC 61643-31 Class II coordination requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ350A-E3/5B | Same VWM/VBR/VC ratings but SMA package (DO-214AC); RθJA = 140 °C/W vs. 100 °C/W for P6SMB350AHE3_A/I. | Limited to lower-duty-cycle surges due to higher thermal resistance; unsuitable for repetitive 1 Hz+ surge environments. | Select when board space is constrained and surge frequency is <0.1 Hz; verify thermal margin with actual pad layout. |
| 1.5SMC350AHE3_A | Same electrical specs but SMC (DO-214AB) package; 1.5 kW peak power rating, larger footprint, RθJA = 70 °C/W. | Overqualified for 600 W needs; occupies ~2.5× PCB area; better suited for mission-critical 1.5 kV surge immunity. | Choose only if future design scalability to higher-energy transients is required; otherwise P6SMB350AHE3_A/I offers optimal size/power balance. |
Compared with SMAJ350A-E3/5B, P6SMB350AHE3_A/I delivers superior thermal performance in compact layouts; versus 1.5SMC350AHE3_A, it reduces PCB area by 60% while retaining full 600 W capability - making it the preferred choice for space-constrained, high-reliability 300–400 VDC protection.
Availability
P6SMB350AHE3_A/I is available at Aetrix Electronics and suitable for industrial power supplies, telecom rectifier modules, and renewable energy inverters requiring stable component supply with AEC-Q101 qualification and RoHS compliance.
Supply support for P6SMB350AHE3_A/I 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 P6SMB Series targets high-energy transient suppression in industrial, automotive, and telecom infrastructure, engineered for robustness under harsh thermal and surge conditions while maintaining tight parametric tolerances.
FAQ
What is the clamping voltage of P6SMB350AHE3_A/I at its rated peak pulse current?
The P6SMB350AHE3_A/I has a maximum clamping voltage (VC) of 482 V at its specified peak pulse current (IPPM) of 1.24 A under a 10/1000 μs waveform. This value is measured with the device mounted on 0.2" × 0.2" copper pads per JEDEC standards and defines the upper voltage limit imposed on protected circuitry during surge events. The P6SMB350AHE3_A/I maintains this clamping performance across its full operating temperature range of –65 °C to +150 °C.
Is P6SMB350AHE3_A/I suitable for automotive applications?
Yes, P6SMB350AHE3_A/I is AEC-Q101 qualified, as indicated by the "HE3" suffix and documented in Vishay's ordering information notes for high-voltage variants (P6SMB250A to P6SMB540A). It undergoes stress testing including temperature cycling, high-temperature reverse bias, and ESD per AEC-Q101 Rev D, making it appropriate for under-hood and powertrain control modules where 300–400 VDC transient suppression is required. The P6SMB350AHE3_A/I also meets J-STD-020 MSL Level 1 for lead-free reflow compatibility.
How does the thermal resistance of P6SMB350AHE3_A/I affect its surge handling capability?
The P6SMB350AHE3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on minimum recommended 0.2" × 0.2" copper pads. This enables sustained dissipation of 600 W peak pulses without exceeding its 150 °C maximum junction temperature, provided duty cycle remains ≤0.01 % (per datasheet derating curve). Higher copper area or internal layers reduce RθJA, allowing greater repetition rates; the P6SMB350AHE3_A/I's low RθJA relative to SMA-packaged alternatives makes it preferable for thermally dense designs.
What is the meaning of the "_A/I" suffix in P6SMB350AHE3_A/I?
The "_A" in P6SMB350AHE3_A/I denotes the unidirectional configuration (as opposed to "CA" for bidirectional), while "/I" specifies packaging in 13-inch diameter plastic tape and reel with 3200 units per reel. The "HE3" portion confirms RoHS-compliance and AEC-Q101 qualification. This full ordering code - P6SMB350AHE3_A/I - uniquely identifies the AEC-Q101-qualified, unidirectional, 350 V standoff, 13" reel variant of the P6SMB series, distinct from commercial-grade "E3" or halogen-free "HM3" versions.
Does P6SMB350AHE3_A/I require a heatsink for standard surge protection use?
No, P6SMB350AHE3_A/I does not require an external heatsink for single-event or low-duty-cycle surge suppression (e.g., IEC 61000-4-5 testing), as its 600 W peak rating is validated with standard PCB copper pads only. Its RθJA of 100 °C/W and 150 °C TJ max allow safe operation with proper pad layout. However, for repetitive surges >0.1 Hz or ambient temperatures >70 °C, increasing copper area or adding thermal vias is recommended. The P6SMB350AHE3_A/I's design intentionally eliminates heatsink dependency to simplify layout and reduce BOM cost.
P6SMB350AHE3_A/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, TransZorb®
- Packaging:
- Tape & Box (TB)
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
P6SMB350AHE3_A/I FAQ
1.How can I place an order for P6SMB350AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB350AHE3_A/I 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 P6SMB350AHE3_A/I reliable?
The price and inventory of P6SMB350AHE3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB350AHE3_A/I is usually 5 days.
3.What payment methods are accepted for P6SMB350AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB350AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB350AHE3_A/I?
P6SMB350AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB350AHE3_A/I 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 P6SMB350AHE3_A/I?
For technical support, including P6SMB350AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB350AHE3_A/I requirements.
6.How does Aetrix verify that P6SMB350AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All P6SMB350AHE3_A/I 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 P6SMB350AHE3_A/I meets industry standards.
7.What is the process for return or replacement of P6SMB350AHE3_A/I?
All P6SMB350AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB350AHE3_A/I, 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 P6SMB350AHE3_A/I part is unused and in its original packaging.
Return procedure for P6SMB350AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB350AHE3_A/I Tags
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