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Vishay General Semiconductor - Diodes Division P6SMB350AHM3_C/H
- Part No.:
- P6SMB350AHM3_C/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB350AHM3_C/H.pdf
- Description:
- TVS DIODE 300VWM 482VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,275
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Product details
Overview
P6SMB350AHM3_C/H 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), 482 V clamping voltage (VC) at 1.24 A peak pulse current (IPPM), and 600 W peak pulse power (PPPM) with 10/1000 μs waveform. It protects power rails and signal lines in industrial motor drives, telecom power supplies, and automotive ECUs against ESD and inductive switching transients.
For engineers reviewing the P6SMB350AHM3_C/H datasheet, P6SMB350AHM3_C/H pinout, P6SMB350AHM3_C/H application, or P6SMB350AHM3_C/H equivalent, this device is selected for high-voltage transient suppression where low leakage (<1.0 μA at VWM), AEC-Q101 qualification (HM3 suffix), halogen-free RoHS compliance, and stable clamping under repetitive surges are required.
Technical Context
This TVS operates as a unidirectional avalanche diode with cathode-band polarity marking, designed to clamp reverse transients above its breakdown voltage (VBR = 333–368 V) while maintaining <1.0 μA reverse leakage at 300 V standoff. Its glass-passivated junction ensures stable parametric performance across temperature (−65 °C to +150 °C).
Thermal design relies on low RθJA (100 °C/W) and RθJL (20 °C/W), enabling reliable operation on standard 0.2" × 0.2" copper pads without heatsinking. The HM3 suffix confirms halogen-free, RoHS-compliant construction and AEC-Q101 qualification per JESD22-B102 whisker testing.
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 - Confirmed avalanche onset range ensuring predictable turn-on margin |
| VC (Clamping Voltage) | 482 V at IPPM = 1.24 A - Peak voltage seen by protected circuit during 10/1000 μs surge |
| PPPM (Peak Pulse Power) | 600 W - Sustained transient energy absorption capability per JEDEC-standard waveform |
| ID (Reverse Leakage) | <1.0 μA at 300 V - Minimal standby power loss and signal integrity impact in high-impedance circuits |
| TJ max | +150 °C - Enables use in under-hood automotive and high-ambient industrial environments |
| Package | SMB (DO-214AA) - Standardized surface-mount footprint compatible with automated placement and reflow |
Pinout & Package
SMB (DO-214AA) package: 2-terminal surface-mount device with cathode band marking; terminals are matte tin-plated, solderable per J-STD-002 and JESD22-B102; meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side of protected line; conducts only during forward surge events |
| Cathode | Reverse clamping terminal | Marked with band; connected to higher-potential rail; avalanches to clamp transients above VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive-grade reliability including temperature cycling, humidity, and mechanical shock |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for global electronics manufacturing and end-of-life handling |
| 600 W peak pulse power (10/1000 μs) | Robust protection against IEC 61000-4-5 Level 4 surges without derating in typical PCB layouts |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., inductive switch-off in motor drivers) |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns |
Applications
| Industrial Motor Drives | Telecom AC/DC Power Supplies |
|---|---|
Use Scenario: Protection of DC bus inputs against back-EMF spikes from contactor switching and regenerative braking. IC Role / Device Role / Timing Role: Unidirectional TVS placed between DC+ and ground to clamp negative-going transients. Use Value: Limits voltage excursions to ≤482 V, preventing gate oxide damage to IGBTs and MOSFETs downstream. |
Use Scenario: Input-stage surge suppression on primary-side rectifier outputs exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbing 600 W pulses without thermal runaway. Use Value: Maintains system uptime by surviving repeated 10/1000 μs surges up to 1.24 A without parameter shift. |
| Automotive Engine Control Units | Industrial PLC I/O Modules |
Use Scenario: Protection of 12 V/24 V supply rails in engine bay modules subject to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: AEC-Q101-qualified unidirectional suppressor with cathode tied to battery rail. Use Value: Withstands −65 °C to +150 °C ambient and passes automotive vibration/shock tests per qualification. |
Use Scenario: Field-side analog input protection against wiring faults and electrostatic discharge in factory automation systems. IC Role / Device Role / Timing Role: High-VWM TVS isolating sensor signal paths from 300 V common-mode transients. Use Value: Delivers <1.0 μA leakage at 300 V, preserving measurement accuracy in 24-bit ADC front-ends. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ350AHE3_A/H | Same VWM/VBR/VC ratings; E3 suffix indicates commercial-grade RoHS (non-halogen-free, non-AEC-Q101) | Lacks automotive qualification and halogen-free certification; suitable for industrial/commercial designs only | Select when AEC-Q101 and halogen-free requirements are not mandated |
| P6SMB350A-M3/52 | Identical electrical specs; M3 suffix denotes halogen-free RoHS but no AEC-Q101 qualification | Meets environmental standards but not automotive reliability testing; lower cost than HM3 variants | Choose for cost-sensitive industrial applications requiring halogen-free compliance without automotive validation |
Compared with P6SMB350AHM3_C/H, SMBJ350AHE3_A/H offers identical clamping performance but lacks AEC-Q101 and halogen-free status, while P6SMB350A-M3/52 provides halogen-free compliance without automotive qualification-making P6SMB350AHM3_C/H the sole option meeting all three criteria simultaneously.
Availability
P6SMB350AHM3_C/H is available at Aetrix Electronics and suitable for industrial motor drives, telecom power supplies, automotive engine control units, and industrial PLC I/O modules requiring stable component supply and long-term lifecycle support.
Supply support for P6SMB350AHM3_C/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, rectifiers, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series is engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom infrastructure where robustness, consistency, and regulatory compliance are critical.
FAQ
What is the clamping voltage of the P6SMB350AHM3_C/H under a 10/1000 μs surge?
The P6SMB350AHM3_C/H has a maximum clamping voltage (VC) of 482 V at a peak pulse current (IPPM) of 1.24 A with a 10/1000 μs waveform. This value is measured per JEDEC-standard test conditions and defines the upper voltage limit imposed on protected circuitry during transient events. The P6SMB350AHM3_C/H maintains this clamping performance across its full operating temperature range.
Is the P6SMB350AHM3_C/H qualified for automotive applications?
Yes, the P6SMB350AHM3_C/H is AEC-Q101 qualified, as confirmed by the HM3 suffix in its part number. This qualification covers stress tests including temperature cycling, high-temperature operating life, and mechanical shock, making the P6SMB350AHM3_C/H suitable for under-hood and chassis-mounted automotive electronics where reliability under extreme conditions is mandatory.
What does the "HM3" suffix indicate in P6SMB350AHM3_C/H?
The "HM3" suffix in P6SMB350AHM3_C/H specifies halogen-free, RoHS-compliant construction combined with AEC-Q101 qualification. It distinguishes this variant from E3 (RoHS only) and M3 (halogen-free RoHS, non-automotive) versions. The "_C/H" denotes packaging in 7" tape-and-reel format with 750 units per reel, per Vishay's ordering nomenclature.
How does the P6SMB350AHM3_C/H compare to bidirectional TVS diodes in the same series?
The P6SMB350AHM3_C/H is unidirectional and intended for DC rail protection where polarity is fixed; it offers higher VWM (300 V) and VBR (333–368 V) than bidirectional variants at equivalent voltage grades. Bidirectional types like P6SMB350CA lack cathode marking and conduct in both directions, making them unsuitable for DC applications requiring polarity-aware clamping. The P6SMB350AHM3_C/H provides superior standoff stability in polarized circuits.
What is the thermal resistance of the P6SMB350AHM3_C/H, and how does it affect layout?
The P6SMB350AHM3_C/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W and junction-to-lead resistance (RθJL) of 20 °C/W. These values assume mounting on 0.2" × 0.2" copper pads per terminal. To maintain safe junction temperatures under repetitive surges, PCB layout must adhere to Vishay's recommended pad dimensions and avoid excessive trace impedance-critical for sustaining the P6SMB350AHM3_C/H's 600 W pulse rating.
P6SMB350AHM3_C/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:
- 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 (SMB)
P6SMB350AHM3_C/H FAQ
1.How can I place an order for P6SMB350AHM3_C/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB350AHM3_C/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_C/H reliable?
The price and inventory of P6SMB350AHM3_C/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_C/H is usually 5 days.
3.What payment methods are accepted for P6SMB350AHM3_C/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB350AHM3_C/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB350AHM3_C/H?
P6SMB350AHM3_C/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB350AHM3_C/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_C/H?
For technical support, including P6SMB350AHM3_C/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB350AHM3_C/H requirements.
6.How does Aetrix verify that P6SMB350AHM3_C/H is sourced from the original manufacturer or authorized distributors?
All P6SMB350AHM3_C/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_C/H meets industry standards.
7.What is the process for return or replacement of P6SMB350AHM3_C/H?
All P6SMB350AHM3_C/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB350AHM3_C/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_C/H part is unused and in its original packaging.
Return procedure for P6SMB350AHM3_C/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB350AHM3_C/H Tags
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Diodes Incorporated
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