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Vishay General Semiconductor - Diodes Division P6SMB350AHM3_A/H
- Part No.:
- P6SMB350AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB350AHM3_A/H.pdf
- Description:
- TVS DIODE 300VWM 482VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,775
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Product details
Overview
P6SMB350AHM3_A/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the P6SMB series, designed for high-energy surge protection of DC power rails and signal lines. It features a 350 V standoff voltage (VWM), 482 V maximum clamping voltage at 1.24 A peak pulse current, and 600 W peak pulse power capability with a 10/1000 μs waveform - deployed in industrial motor drives, telecom power supplies, and automotive ECUs.
For engineers reviewing the P6SMB350AHM3_A/H datasheet, P6SMB350AHM3_A/H pinout, P6SMB350AHM3_A/H application, or P6SMB350AHM3_A/H equivalent, key selection criteria include its AEC-Q101 qualification (HM3 suffix), halogen-free RoHS compliance, SMB (DO-214AA) package thermal performance, and precise clamping behavior under repetitive transients in harsh environments.
Technical Context
This TVS diode operates as a unidirectional clamping device with a cathode-band-marked polarity. Its silicon junction is glass passivated for stable leakage and long-term reliability under thermal cycling. The device responds to fast transients (<1 ns) and maintains low incremental surge resistance during 10/1000 μs surges up to 600 W.
Rated for -65 °C to +150 °C junction temperature, it delivers 5.0 W steady-state power dissipation on infinite heatsink at 50 °C ambient. Its MSL Level 1 rating (J-STD-020) and 260 °C lead-free reflow compatibility support automated SMT assembly without moisture sensitivity concerns.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 300 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (Breakdown) | 333–368 V at 1 mA - Confirmed breakdown threshold defining turn-on onset |
| VC (Clamping) | 482 V at 1.24 A IPPM - Peak voltage seen by protected circuit during 10/1000 μs surge |
| PPPM | 600 W - Surge energy handling capacity per single 10/1000 μs pulse, 0.01% duty cycle |
| ID (Leakage) | 1.0 μA max at 300 V - Minimal reverse leakage preserves efficiency in high-impedance bias networks |
| TJ max | +150 °C - Enables operation in under-hood automotive and industrial power-conversion enclosures |
| Package | SMB (DO-214AA) - Standardized 2-pin surface-mount outline with 5.0 mm × 5.0 mm copper pad thermal design |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case meeting UL 94 V-0 flammability rating; matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards. Cathode indicated by band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or low-potential rail; defines clamping path directionality |
| Cathode | High-side surge input terminal | Connected to protected line; absorbs positive transients toward ground via avalanche conduction |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified (HM3) | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for global electronics manufacturing and end-of-life handling |
| 600 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-earth) without degradation when properly mounted |
| Glass-passivated junction | Ensures stable VBR and low leakage over 10+ years in industrial temperature profiles |
| MSL Level 1 (260 °C) | Eliminates pre-bake requirement for lead-free reflow, reducing SMT process complexity and cost |
Applications
| Industrial Motor Drives | Telecom Power Supplies |
|---|---|
Use Scenario: Protection of gate drivers and auxiliary power rails against inductive kickback from IGBT/MOSFET switching. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed across DC bus or isolated bias windings. Use Value: Limits transient overshoot to ≤482 V, preventing gate oxide rupture and secondary failure in 400–600 V systems. |
Use Scenario: Input-stage surge suppression on AC/DC front-end rectifiers and DC-DC converter inputs. IC Role / Device Role / Timing Role: Primary-level TVS absorbing lightning-induced surges per IEC 61000-4-5. Use Value: Maintains system uptime by surviving repeated 600 W pulses without parameter drift or thermal runaway. |
| Automotive Engine Control Units | Industrial PLC I/O Modules |
Use Scenario: CAN/LIN bus power rail protection and sensor supply line hardening in under-hood ECUs. IC Role / Device Role / Timing Role: AEC-Q101-qualified unidirectional TVS on 12 V/24 V battery-fed subsystems. Use Value: Guarantees operation across -40 °C to +125 °C ambient with no derating loss up to 150 °C junction. |
Use Scenario: Field-side analog/digital I/O protection against ESD and load dump in factory automation controllers. IC Role / Device Role / Timing Role: Point-of-entry TVS on terminal blocks and connector interfaces. Use Value: Provides repeatable clamping performance over >100,000 surge events in high-dust, high-vibration 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-E3/52 | Same VWM (350 V), lower PPPM (600 W), but non-AEC-Q101 and non-halogen-free (E3 suffix) | Commercial-grade only; unsuitable for automotive or regulated green procurement programs | Select when AEC-Q101 and halogen-free compliance are not required and cost is prioritized |
| 1.5SMC350AHE3_A | Same VWM and clamping, but larger SMC (DO-214AB) package; higher RθJA (75 °C/W vs. 100 °C/W) | Requires larger PCB footprint and different thermal pad layout; less suitable for dense layouts | Choose only if existing board uses SMC footprint or requires marginally better surge endurance at lower thermal stress |
Compared with P6SMB350AHM3_A/H, SMBJ350A-E3/52 lacks automotive qualification and halogen-free status, while 1.5SMC350AHE3_A trades compact SMB size for slightly improved thermal resistance but increases board area and assembly cost.
Availability
P6SMB350AHM3_A/H is available at Aetrix Electronics and suitable for industrial motor drives, telecom power supplies, and automotive engine control units requiring stable component supply with full traceability and lifecycle continuity.
Supply support for P6SMB350AHM3_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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The P6SMB Series is engineered for robust transient suppression in space-constrained, high-reliability applications - particularly where AEC-Q101 qualification, halogen-free compliance, and consistent clamping behavior under repetitive surges are mandatory.
FAQ
What is the clamping voltage of the P6SMB350AHM3_A/H under a 10/1000 μs surge?
The P6SMB350AHM3_A/H has a maximum clamping voltage (VC) of 482 V at 1.24 A peak pulse current (IPPM) under a 10/1000 μs waveform. This value is measured per standard test conditions and defines the upper voltage limit imposed on protected circuits during surge events - critical for ensuring downstream ICs remain within absolute maximum ratings.
Is the P6SMB350AHM3_A/H qualified for automotive use?
Yes, the P6SMB350AHM3_A/H is AEC-Q101 qualified, as confirmed by the "HM3" suffix indicating halogen-free, RoHS-compliant, and automotive-grade construction. It undergoes rigorous stress testing including temperature cycling, high-temperature reverse bias, and ESD per AEC-Q101 requirements - making it suitable for engine control, body electronics, and ADAS power rail protection.
What does the "_A/H" suffix mean in P6SMB350AHM3_A/H?
The "_A/H" suffix in P6SMB350AHM3_A/H denotes the packaging configuration: "A" indicates the base part is unidirectional, and "H" specifies 7-inch diameter plastic tape-and-reel delivery with 750 units per reel. This matches Vishay's ordering convention for HM3-grade parts in SMB package with standard SMT-compatible packaging.
How does the P6SMB350AHM3_A/H compare thermally to larger-package TVS diodes?
The P6SMB350AHM3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" copper pads. While larger packages like SMC offer lower RθJA (~75 °C/W), the SMB footprint enables high-density placement - and its 5.0 W steady-state power rating remains sufficient for most transient-only protection roles where average power dissipation is negligible.
Can the P6SMB350AHM3_A/H replace a bidirectional TVS in a DC application?
No - the P6SMB350AHM3_A/H is unidirectional and must be oriented with cathode toward the protected line. Using it in place of a bidirectional device (e.g., P6SMB350CA) in AC-coupled or floating-signal applications would result in forward conduction during negative transients, causing failure. Always verify polarity and circuit topology before substitution.
P6SMB350AHM3_A/H 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:
- Discontinued at Digi-Key
- 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB350AHM3_A/H FAQ
1.How can I place an order for P6SMB350AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB350AHM3_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 P6SMB350AHM3_A/H reliable?
The price and inventory of P6SMB350AHM3_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 P6SMB350AHM3_A/H is usually 5 days.
3.What payment methods are accepted for P6SMB350AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB350AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB350AHM3_A/H?
P6SMB350AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB350AHM3_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 P6SMB350AHM3_A/H?
For technical support, including P6SMB350AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB350AHM3_A/H requirements.
6.How does Aetrix verify that P6SMB350AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All P6SMB350AHM3_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 P6SMB350AHM3_A/H meets industry standards.
7.What is the process for return or replacement of P6SMB350AHM3_A/H?
All P6SMB350AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB350AHM3_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 P6SMB350AHM3_A/H part is unused and in its original packaging.
Return procedure for P6SMB350AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB350AHM3_A/H Tags
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DESD3V3E1BL-7B
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Diodes Incorporated
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