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Vishay General Semiconductor - Diodes Division P6SMB350AHE3_A/H
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- Part No.:
- P6SMB350AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB350AHE3_A/H.pdf
- Description:
- TVS DIODE 300VWM 482VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,239
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Product details
Overview
P6SMB350AHE3_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 signal lines. It features a 350 V standoff voltage (VWM), 368 V minimum breakdown voltage (VBR), 482 V maximum clamping voltage (VC) at 1.24 A peak pulse current (IPPM), and 600 W peak pulse power rating with 10/1000 μs waveform - deployed in industrial motor drives and telecom power supplies.
For engineers reviewing the P6SMB350AHE3_A/H datasheet, P6SMB350AHE3_A/H pinout, P6SMB350AHE3_A/H application, or P6SMB350AHE3_A/H equivalent, key selection criteria include clamping performance under 1.24 A transient, thermal resistance (RθJA = 100 °C/W), AEC-Q101 qualification status, and SMB (DO-214AA) package compatibility with automated SMT assembly.
Technical Context
This TVS diode operates as a unidirectional clamp, conducting only during reverse overvoltage events while blocking forward current up to its rated VWM of 300 V. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1.0 μA at VWM).
The device delivers 600 W peak pulse power handling per 10/1000 μs waveform with derating above 25 °C, and meets MSL Level 1 per J-STD-020 (peak reflow temperature 260 °C). It is RoHS-compliant and AEC-Q101 qualified for automotive-grade reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 300 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR (Breakdown Voltage) | 333–368 V at 1 mA test current - defines precise conduction onset threshold |
| VC (Clamping Voltage) | 482 V at 1.24 A IPPM - limits transient voltage seen by protected downstream circuitry |
| PPPM (Peak Pulse Power) | 600 W - energy absorption capability under standardized 10/1000 μs surge |
| RθJA | 100 °C/W - thermal resistance from junction to ambient, critical for PCB pad layout design |
| TJ max. | 150 °C - maximum allowable junction temperature for sustained operation |
| Package | SMB (DO-214AA) - 0.220" × 0.130" footprint compatible with standard SMT pick-and-place |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, cathode-banded unidirectional configuration. Molded plastic case meets UL 94 V-0 flammability rating; matte tin-plated leads comply with J-STD-002 solderability and JESD 22-B102 whisker testing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / reverse surge return path | Connected to lower-potential side of protected line (e.g., ground or return rail) |
| Cathode | Reverse surge conduction terminal | Connected to higher-potential line (e.g., 300 V DC bus); marked with band for orientation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive power electronics requiring extended temperature cycling and humidity robustness |
| 600 W peak pulse power (10/1000 μs) | Enables protection against IEC 61000-4-5 Level 4 surges without external series impedance |
| Low clamping ratio (VC/VBR ≈ 1.37) | Minimizes voltage overshoot during transients, reducing stress on downstream MOSFETs or controllers |
| MSL Level 1 moisture sensitivity | Allows direct placement without baking, supporting high-throughput manufacturing |
| Glass passivated junction | Ensures stable VBR tolerance and low leakage drift over time and temperature |
Applications
| Industrial Motor Drives | Telecom DC Power Feeds |
|---|---|
Use Scenario: Protection of 300 V DC link in variable-frequency drives against switching-induced voltage spikes and lightning-induced surges. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed across DC bus to limit transient overvoltage before it reaches IGBT gate drivers or bus capacitors. Use Value: Clamps 1.24 A transients to ≤482 V, preventing insulation breakdown in 600 V-rated IGBT modules and extending system MTBF. |
Use Scenario: Surge suppression on -48 V or +300 V telecom rectifier outputs feeding remote radio units and base station backplanes. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbing repetitive line surges per ITU-T K.20/K.21 standards without degradation. Use Value: Maintains <1.0 μA leakage at 300 V, avoiding standby power loss while surviving >1000 surges at 600 W peak. |
| Automotive Body Control Modules | Industrial PLC Analog Input Protection |
Use Scenario: Input protection for 12/24 V CAN/LIN subsystems exposed to load-dump and jump-start transients in chassis wiring. IC Role / Device Role / Timing Role: AEC-Q101-qualified unidirectional suppressor on power input rails upstream of LDOs and microcontrollers. Use Value: Withstands 100 A IFSM surge (8.3 ms half-sine), meeting ISO 7637-2 Pulse 5a requirements without fuse coordination. |
Use Scenario: Front-end protection of 4–20 mA current-loop inputs in programmable logic controllers subjected to field-wiring ESD and inductive kickback. IC Role / Device Role / Timing Role: High-VWM TVS placed between input terminals and signal conditioner ICs to shunt fast transients before amplification. Use Value: 300 V VWM avoids false triggering during normal 24 V supply variation, while 482 V VC prevents op-amp saturation during ±2 kV ESD events. |
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-E3/52 | Same VWM/VBR/VC specs but lower PPPM (400 W), SMA package (smaller footprint, higher RθJA) | Limited to lower-energy surges; unsuitable for IEC 61000-4-5 Level 4 | Select only when space-constrained and surge threat level is ≤400 W |
| 1.5SMC350A | Same electrical ratings, but larger SMC (DO-214AB) package with lower RθJA (75 °C/W) and higher IFSM (200 A) | Better thermal performance and surge margin; requires larger PCB area | Prefer for high-reliability industrial power supplies where layout allows SMC footprint |
Compared with P6SMB350AHE3_A/H, SMAJ350A-E3/52 trades peak power and thermal robustness for compact size, while 1.5SMC350A offers superior thermal dissipation and surge endurance at the cost of board space - making P6SMB350AHE3_A/H the optimal balance of AEC-Q101 compliance, 600 W capability, and SMB manufacturability.
Availability
P6SMB350AHE3_A/H is available at Aetrix Electronics and suitable for industrial motor drives, telecom DC power feeds, automotive body control modules, and PLC analog input protection requiring stable component supply with AEC-Q101 qualification and full traceability.
Supply support for P6SMB350AHE3_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 designs and manufactures discrete semiconductors including diodes, MOSFETs, and optoelectronics, with emphasis on high-reliability, high-efficiency power and signal components.
The P6SMB Series belongs to Vishay's TRANSZORB® TVS portfolio, engineered specifically for robust, standardized transient suppression in automotive, industrial, and telecom infrastructure where repeatable clamping and long-term stability are mandatory.
FAQ
What is the maximum clamping voltage of P6SMB350AHE3_A/H under rated surge conditions?
The P6SMB350AHE3_A/H has a maximum clamping voltage (VC) of 482 V when subjected to its rated peak pulse current of 1.24 A using the 10/1000 μs waveform. This value is measured per JEDEC standards and ensures downstream components see no more than 482 V during transient events - a critical parameter for protecting 600 V-class power devices. The P6SMB350AHE3_A/H maintains this clamping performance across its full operating temperature range.
Is P6SMB350AHE3_A/H qualified for automotive applications?
Yes, P6SMB350AHE3_A/H is AEC-Q101 qualified, as indicated by the "HE3" suffix and documented in Vishay's official datasheet revision 09-Jan-2024. It undergoes stress testing for temperature cycling, humidity, mechanical shock, and surge endurance required for automotive power electronics. The P6SMB350AHE3_A/H is approved for use in body control modules, infotainment power rails, and ADAS sensor supply lines where transient immunity and long-term reliability are essential.
What does the "_A/H" suffix in P6SMB350AHE3_A/H signify?
The "_A/H" suffix in P6SMB350AHE3_A/H denotes packaging and revision coding: "A" indicates the device revision level per Vishay's internal documentation, and "H" specifies the delivery format - 7-inch plastic tape and reel with 750 units per reel. This matches Vishay's ordering convention shown in the "Ordering Information" section of document 88370. The P6SMB350AHE3_A/H is RoHS-compliant and AEC-Q101 qualified, consistent with all HE3-suffixed variants.
How does the thermal resistance of P6SMB350AHE3_A/H affect PCB layout?
P6SMB350AHE3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W, which means PCB copper pad area directly impacts safe power dissipation. Vishay specifies mounting on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve this rating. Reducing pad size increases RθJA, risking thermal runaway during repetitive surges. For reliable operation, the P6SMB350AHE3_A/H must be placed with full thermal pads and avoid nearby heat sources - especially critical in enclosed industrial enclosures.
Can P6SMB350AHE3_A/H be used in bidirectional protection circuits?
No, P6SMB350AHE3_A/H is a unidirectional TVS diode, as confirmed by its part number suffix "A" (not "CA") and datasheet designation. It conducts only during reverse-biased overvoltage events and blocks forward current up to its VWM of 300 V. For bidirectional protection - such as AC line or data-line surge suppression - a CA-suffixed variant like P6SMB350CAHE3_A/H would be required. Using P6SMB350AHE3_A/H in bidirectional applications risks failure during positive half-cycle transients.
P6SMB350AHE3_A/H 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/H FAQ
1.How can I place an order for P6SMB350AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB350AHE3_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 P6SMB350AHE3_A/H reliable?
The price and inventory of P6SMB350AHE3_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 P6SMB350AHE3_A/H is usually 5 days.
3.What payment methods are accepted for P6SMB350AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB350AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB350AHE3_A/H?
P6SMB350AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB350AHE3_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 P6SMB350AHE3_A/H?
For technical support, including P6SMB350AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB350AHE3_A/H requirements.
6.How does Aetrix verify that P6SMB350AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All P6SMB350AHE3_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 P6SMB350AHE3_A/H meets industry standards.
7.What is the process for return or replacement of P6SMB350AHE3_A/H?
All P6SMB350AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB350AHE3_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 P6SMB350AHE3_A/H part is unused and in its original packaging.
Return procedure for P6SMB350AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB350AHE3_A/H Tags
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