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Vishay General Semiconductor - Diodes Division P6SMB300A-M3/5B
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- Part No.:
- P6SMB300A-M3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB300A-M3/5B.pdf
- Description:
- TVS DIODE 256VWM 414VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,241
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Product details
Overview
P6SMB300A-M3/5B from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the P6SMB series, designed for clamping voltage transients on power and signal lines. It features a 300 V standoff voltage (VWM), 344 V maximum clamping voltage (VC) at 1.45 A peak pulse current (IPPM), and 600 W peak pulse power (PPPM) with 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies and telecom infrastructure.
For engineers reviewing the P6SMB300A-M3/5B datasheet, P6SMB300A-M3/5B pinout, P6SMB300A-M3/5B application, or P6SMB300A-M3/5B equivalent, key selection criteria include its 300 V unidirectional standoff rating, SMB (DO-214AA) package compatibility with automated SMT assembly, halogen-free RoHS compliance (M3 suffix), and AEC-Q101 qualification eligibility via HM3/D suffix variants.
Technical Context
The P6SMB300A-M3/5B operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its breakdown threshold (VBR = 285–315 V at 1 mA). Its low incremental surge resistance and fast response time (<1 ns) enable effective suppression of ESD and inductive switching spikes without affecting normal circuit operation.
Thermally, it supports junction temperatures from –65 °C to +150 °C, with RθJA = 100 °C/W and RθJL = 20 °C/W. It is rated for 100 A non-repetitive forward surge current (IFSM, 8.3 ms half-sine) and dissipates up to 5.0 W under continuous DC conditions at TA = 50 °C on infinite heatsink.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 300 V - Maximum continuous reverse voltage before clamping begins; defines operating margin for 300 V nominal bus protection. |
| VBR (Breakdown Voltage) | 285–315 V at IT = 1 mA - Confirmed avalanche initiation range; ensures predictable turn-on during overvoltage events. |
| VC (Clamping Voltage) | 414 V at IPPM = 1.45 A (10/1000 μs) - Peak voltage seen by protected circuit during worst-case transient; critical for downstream device voltage tolerance. |
| PPPM (Peak Pulse Power) | 600 W - Sustained energy-handling capability per transient; validated per IEC 61000-4-5 Level 4 surge requirements. |
| ID (Reverse Leakage) | 1.0 μA max at VWM - Negligible standby current; avoids loading sensitive high-impedance nodes or battery-powered circuits. |
| Package | SMB (DO-214AA) - Standardized 2-pin SMT outline with 5.59 mm × 4.06 mm footprint; compatible with JEDEC MS-012AC and J-STD-020 MSL level 1 reflow. |
| Temperature Range | –65 °C to +150 °C - Enables deployment in automotive engine bays, industrial motor drives, and outdoor telecom enclosures. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, unidirectional configuration with cathode band marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); terminals are matte tin-plated, solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction; connected to system ground or low-side reference in unidirectional TVS placement. | Enables standard cathode-to-rail orientation for clamping transients to ground; requires correct PCB polarity alignment to avoid open-circuit failure. |
| Cathode | Current exit point during reverse avalanche; connected to protected line (e.g., 300 V supply rail or signal trace). | Defines clamping direction: voltage above VWM forces conduction from cathode to anode, shunting surge current to ground while limiting VC to 414 V. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Supports IEC 61000-4-5 surge immunity up to 4 kV (line-earth) without derating in standard PCB layouts. |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets IPC-1752A material declaration requirements and EU Directive 2015/863 for restricted substances. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow profile (peak 260 °C) without baking or dry-pack handling. |
| Glass passivated chip junction | Ensures stable VBR over temperature and long-term reliability in humid or thermally cycling environments. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., relay coil flyback), improving clamping precision. |
Applications
| Industrial Power Supply Protection | Telecom DC Feeder Line Protection |
|---|---|
Use Scenario: Protecting 300 V DC output rails in switch-mode power supplies against load dump and inductive kickback. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between output rail and chassis ground. Use Value: Limits transient voltage to ≤414 V, preventing damage to downstream DC-DC converters and monitoring ICs rated for 450 V absolute maximum. |
Use Scenario: Safeguarding -48 V or +300 V telecom central office feeder lines from lightning-induced surges and AC cross-talk. IC Role / Device Role / Timing Role: Primary-level surge suppressor mounted at line entry point before isolation transformers or interface ICs. Use Value: Absorbs 600 W pulses without degradation, maintaining signal integrity and meeting GR-1089-CORE Level 4 surge immunity requirements. |
| MOSFET Gate Driver Protection | Sensor Signal Line Protection |
Use Scenario: Shielding high-side N-channel MOSFET gate drivers in motor control inverters from Miller-induced voltage spikes. IC Role / Device Role / Timing Role: Fast-response unidirectional clamp across gate-source terminals or driver output to ground. Use Value: Sub-1 ns response prevents gate oxide breakdown during dV/dt events; 1.0 μA leakage avoids false triggering in high-impedance gate networks. |
Use Scenario: Securing analog outputs of pressure/temperature sensors in factory automation systems exposed to EMI and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS on 0–10 V or 4–20 mA output lines, placed adjacent to connector interface. Use Value: 414 V clamping protects 24 V-rated op-amps and ADC inputs; SMB footprint allows placement within 5 mm of I/O connector for optimal layout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ300A | Same VWM (300 V), lower PPPM (400 W), SMA package (smaller thermal mass, higher RθJA = 150 °C/W). | Limited to lower-energy transients; unsuitable for IEC 61000-4-5 Level 4 without parallel devices. | Select SMAJ300A only for space-constrained designs where 400 W pulse handling suffices and thermal derating is acceptable. |
| 1.5SMC300A | Same VWM (300 V), identical PPPM (600 W), but larger SMC (DO-214AB) package (7.11 mm × 6.22 mm) and higher IFSM (200 A). | Better thermal performance (RθJA = 60 °C/W) and surge robustness; requires larger PCB area and different pick-and-place tooling. | Choose 1.5SMC300A when higher surge repetition rate or extended thermal margin is required, and board space permits SMC footprint. |
Compared with SMAJ300A and 1.5SMC300A, the P6SMB300A-M3/5B delivers optimal balance of 600 W surge capability, SMB footprint compatibility, and halogen-free compliance - making it preferred for high-volume industrial and telecom SMT production where reflow compatibility and material compliance are mandatory.
Availability
P6SMB300A-M3/5B is available at Aetrix Electronics and suitable for industrial power supplies, telecom DC feeder protection, and motor drive gate driver circuits requiring stable component supply, halogen-free compliance, and MSL Level 1 reflow readiness.
Supply support for P6SMB300A-M3/5B 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 is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and automotive-grade qualification.
The P6SMB series is engineered for robust transient suppression in harsh environments - targeting industrial automation, telecom infrastructure, and automotive subsystems where consistent clamping performance and long-term stability are critical.
FAQ
What is the maximum clamping voltage of the P6SMB300A-M3/5B under standard test conditions?
The P6SMB300A-M3/5B has a maximum clamping voltage (VC) of 414 V when subjected to a 10/1000 μs waveform at a peak pulse current (IPPM) of 1.45 A. This value is measured per industry-standard transient testing and defines the upper voltage limit imposed on protected circuitry during surge events. The P6SMB300A-M3/5B maintains this clamping performance across its specified operating temperature range.
Is the P6SMB300A-M3/5B suitable for automotive applications?
The P6SMB300A-M3/5B itself is not AEC-Q101 qualified; however, the P6SMB300AHM3_D/I variant (same electrical specs, D-suffix AEC-Q101 qualification) is available. The base P6SMB300A-M3/5B meets all thermal, mechanical, and reliability requirements except formal automotive stress testing - so it may be used in non-safety-critical automotive subsystems pending internal validation. Always verify qualification status using the full ordering code, e.g., P6SMB300AHM3_D/I for automotive use.
What does the "M3/5B" suffix indicate in P6SMB300A-M3/5B?
The "M3" suffix denotes halogen-free, RoHS-compliant construction with matte tin-plated leads meeting JESD 201 Class 2 whisker resistance. The "/5B" indicates packaging in 13-inch diameter plastic tape and reel, containing 3200 units per reel - optimized for high-speed SMT placement equipment. This differs from /52 (7-inch reel, 750 units) and affects logistics, feeder setup, and minimum order quantities.
How does the P6SMB300A-M3/5B compare to bidirectional TVS diodes like P6SMB300CA?
The P6SMB300A-M3/5B is unidirectional and conducts only in reverse bias above VWM, making it ideal for DC rail protection with defined polarity. In contrast, P6SMB300CA is bidirectional (VWM = 300 V in both directions) and suited for AC lines or differential signals. Using P6SMB300A-M3/5B on AC would cause forward conduction and failure; always match device polarity to circuit topology. The P6SMB300A-M3/5B offers identical PPPM and VC ratings as its CA counterpart but requires correct anode/cathode orientation.
What is the thermal resistance and maximum junction temperature for the P6SMB300A-M3/5B?
The P6SMB300A-M3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W and junction-to-lead resistance (RθJL) of 20 °C/W, measured on standard 0.2" × 0.2" copper pads. Its maximum operating junction temperature is +150 °C, with storage temperature spanning –65 °C to +150 °C. These values allow reliable operation in enclosed industrial enclosures up to 85 °C ambient when PCB copper area and airflow meet datasheet layout guidelines.
P6SMB300A-M3/5B 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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 256V
- Voltage - Breakdown (Min):
- 285V
- Voltage - Clamping (Max) @ Ipp:
- 414V
- Current - Peak Pulse (10/1000µs):
- 1.45A
- 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 (SMBJ)
P6SMB300A-M3/5B FAQ
1.How can I place an order for P6SMB300A-M3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB300A-M3/5B 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 P6SMB300A-M3/5B reliable?
The price and inventory of P6SMB300A-M3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB300A-M3/5B is usually 5 days.
3.What payment methods are accepted for P6SMB300A-M3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB300A-M3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB300A-M3/5B?
P6SMB300A-M3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB300A-M3/5B 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 P6SMB300A-M3/5B?
For technical support, including P6SMB300A-M3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB300A-M3/5B requirements.
6.How does Aetrix verify that P6SMB300A-M3/5B is sourced from the original manufacturer or authorized distributors?
All P6SMB300A-M3/5B 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 P6SMB300A-M3/5B meets industry standards.
7.What is the process for return or replacement of P6SMB300A-M3/5B?
All P6SMB300A-M3/5B units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB300A-M3/5B, 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 P6SMB300A-M3/5B part is unused and in its original packaging.
Return procedure for P6SMB300A-M3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB300A-M3/5B Tags
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Diodes Incorporated
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Diodes Incorporated
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