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Vishay General Semiconductor - Diodes Division P6SMB300A-E3/5B
- Part No.:
- P6SMB300A-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB300A-E3/5B.pdf
- Description:
- TVS DIODE 256VWM 414VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,865
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Product details
Overview
P6SMB300A-E3/5B from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, rated for 300 V standoff voltage (VWM), 344 V clamping voltage (VC) at 1.45 A peak pulse current (IPPM), and 600 W peak pulse power (PPPM) with 10/1000 μs waveform. It protects MOSFETs, ICs, and sensor signal lines in industrial power supplies and telecom interfaces against inductive switching transients.
For engineers reviewing the P6SMB300A-E3/5B datasheet, P6SMB300A-E3/5B pinout, P6SMB300A-E3/5B application, or P6SMB300A-E3/5B equivalent, key selection criteria include unidirectional polarity, 300 V VWM, 344 V VC clamping performance, SMB package thermal resistance (RθJA = 100 °C/W), and AEC-Q101 qualification eligibility via HE3/HM3 variants.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: under normal bias it presents high impedance (<1 μA leakage at 300 V), then rapidly avalanches below 344 V to divert transient energy away from downstream circuitry. Its glass-passivated junction ensures stable breakdown and low incremental surge resistance.
Designed for automated SMT placement on 0.2" × 0.2" copper pads, it delivers repeatable 600 W pulse handling at 0.01% duty cycle and meets J-STD-020 MSL Level 1 (260 °C peak reflow). The cathode band identifies polarity; no marking is used for bidirectional variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 300 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (Breakdown Voltage) | 285–315 V at 1 mA - Confirmed avalanche initiation range under standardized test conditions |
| VC (Clamping Voltage) | 414 V at IPPM = 1.45 A (10/1000 μs) - Peak voltage seen by protected circuit during worst-case transient |
| PPPM (Peak Pulse Power) | 600 W - Sustained transient energy absorption capability without failure |
| ID (Reverse Leakage) | 1.0 μA max at 300 V - Minimal standby power loss and signal integrity impact |
| TJ max | 150 °C - Maximum junction temperature enabling operation in high-ambient industrial environments |
| RθJA | 100 °C/W - Thermal resistance from junction to ambient air on standard PCB pad layout |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, matte tin-plated leads, RoHS-compliant (E3 suffix), UL 94 V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to system ground or lower-potential rail in unidirectional protection configuration |
| Cathode | Reverse-biased clamping terminal | Connected to protected line; cathode band marks this end for correct orientation during placement |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Handles high-energy transients (e.g., IEC 61000-4-5 surge) without degradation when mounted per recommended pad layout |
| Glass passivated junction | Ensures long-term stability of VBR and low leakage across temperature and lifetime stress |
| MSL Level 1 rating | Supports standard lead-free reflow profiles up to 260 °C peak without moisture-induced damage |
| Low profile SMB package | Enables compact board layouts and compatibility with high-speed automated pick-and-place equipment |
| AEC-Q101 qualification path | HE3/HM3 variants available for automotive applications requiring validated reliability under temperature cycling and humidity testing |
Applications
| Industrial Power Supply Protection | Telecom Line Interface Protection |
|---|---|
Use Scenario: Protecting DC-DC converter input stages from load dump and inductive kickback in factory automation controllers. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed between input rail and ground, clamping surges before they reach primary-side controller ICs. Use Value: Limits voltage excursion to ≤414 V during 1.45 A transients, preserving MOSFET gate oxide integrity and preventing controller latch-up. |
Use Scenario: Safeguarding RS-485 transceiver data lines against lightning-induced surges in outdoor base station backhaul links. IC Role / Device Role / Timing Role: Unidirectional TVS connected anode-to-ground, cathode-to-line, suppressing positive-going transients on differential pairs. Use Value: Clamps line-to-ground voltage within safe margin of transceiver absolute maximum ratings (±15 V), maintaining signal integrity during 600 W events. |
| Automotive Sensor Signal Conditioning | Consumer Appliance Motor Drive Protection |
Use Scenario: Shielding analog front-end inputs of pressure/temperature sensors in engine control modules from battery line transients. IC Role / Device Role / Timing Role: Low-leakage (≤1 μA) TVS placed at sensor harness entry point, minimizing offset error in precision measurement paths. Use Value: Maintains <1 μA reverse leakage at 300 V standoff, avoiding DC error injection into 24-bit ADC reference paths while clamping ESD bursts. |
Use Scenario: Suppressing commutation spikes from brushed DC motors in washing machine main control boards. IC Role / Device Role / Timing Role: Fast-response (sub-nanosecond) avalanche diode placed across motor terminals to absorb inductive energy during PWM switching. Use Value: Achieves <1 ns response time to limit flyback voltage to 414 V, preventing MOSFET avalanche failure and reducing EMI radiation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ300A | Same VWM (300 V), higher VC (430 V), lower PPPM (400 W), SMA package (higher RθJA = 150 °C/W) | Limited to lower-energy transients; less effective in high-ambient or high-duty-cycle scenarios | Select when board space is constrained and peak surge energy remains ≤400 W |
| 1.5SMC300A | Same VWM (300 V), identical VC (414 V), same PPPM (600 W), but larger SMC (DO-214AB) package with lower RθJA (75 °C/W) | Better thermal performance for sustained surge duty; requires larger PCB footprint | Choose for high-reliability industrial systems where thermal margin is critical and layout allows SMC size |
Compared with P6SMB300A-E3/5B, SMAJ300A offers smaller footprint but reduced power handling and thermal robustness, while 1.5SMC300A delivers identical electrical protection with superior heat dissipation at the cost of board area-making P6SMB300A-E3/5B the optimal balance of size, power, and manufacturability for mid-tier industrial designs.
Availability
P6SMB300A-E3/5B is available at Aetrix Electronics and suitable for industrial power supplies, telecom line interfaces, automotive sensor modules, and consumer appliance motor drives requiring stable component supply and RoHS-compliant sourcing.
Supply support for P6SMB300A-E3/5B 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, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series targets high-energy transient suppression in space-constrained SMT applications, combining 600 W pulse capability with low-profile SMB packaging and automotive-grade qualification pathways.
FAQ
What is the clamping voltage of P6SMB300A-E3/5B at its rated peak pulse current?
The P6SMB300A-E3/5B has a maximum clamping voltage (VC) of 414 V when subjected to its rated peak pulse current (IPPM) of 1.45 A under the standard 10/1000 μs waveform. This value is measured per Figure 1 in Vishay Document 88370 and defines the upper voltage limit imposed on protected circuitry during transient events. The P6SMB300A-E3/5B maintains this clamping performance across its specified operating temperature range.
Is P6SMB300A-E3/5B suitable for automotive applications?
P6SMB300A-E3/5B itself is commercial-grade (E3 suffix), but Vishay offers AEC-Q101 qualified versions under HE3 and HM3 suffixes (e.g., P6SMB300AHE3_B). These variants undergo extended reliability testing including temperature cycling, humidity bias, and mechanical shock. For automotive use, specify the HE3/HM3 variant-not P6SMB300A-E3/5B-to ensure compliance with AEC-Q101 requirements.
What is the reverse leakage current specification for P6SMB300A-E3/5B at its full standoff voltage?
At its maximum standoff voltage of 300 V and TA = 25 °C, the P6SMB300A-E3/5B exhibits a maximum reverse leakage current (ID) of 1.0 μA. This low leakage ensures minimal power loss and avoids loading sensitive analog circuits or high-impedance nodes. The value is confirmed in the Electrical Characteristics table of Vishay Document 88370 and applies to all units meeting specification.
How does the SMB package of P6SMB300A-E3/5B affect its thermal performance?
The SMB (DO-214AA) package of P6SMB300A-E3/5B provides a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" copper pads per Vishay's recommended layout. This enables reliable operation up to +150 °C junction temperature under pulsed conditions. Compared to larger packages like SMC, the SMB trades some thermal margin for compactness-critical for dense industrial PCBs where space is constrained.
Can P6SMB300A-E3/5B be used in bidirectional protection configurations?
No-P6SMB300A-E3/5B is a unidirectional TVS diode, indicated by the "A" suffix and cathode band marking. Bidirectional variants use the "CA" suffix (e.g., P6SMB300CA). Using P6SMB300A-E3/5B in bidirectional applications would result in forward conduction during negative transients, causing failure. For symmetrical surge protection, select the CA version or pair two unidirectional devices in series opposition.
P6SMB300A-E3/5B 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):
- 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 (SMB)
P6SMB300A-E3/5B FAQ
1.How can I place an order for P6SMB300A-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB300A-E3/5B 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-E3/5B reliable?
The price and inventory of P6SMB300A-E3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB300A-E3/5B is usually 5 days.
3.What payment methods are accepted for P6SMB300A-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB300A-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB300A-E3/5B?
P6SMB300A-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB300A-E3/5B 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-E3/5B?
For technical support, including P6SMB300A-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB300A-E3/5B requirements.
6.How does Aetrix verify that P6SMB300A-E3/5B is sourced from the original manufacturer or authorized distributors?
All P6SMB300A-E3/5B 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-E3/5B meets industry standards.
7.What is the process for return or replacement of P6SMB300A-E3/5B?
All P6SMB300A-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB300A-E3/5B, 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-E3/5B part is unused and in its original packaging.
Return procedure for P6SMB300A-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB300A-E3/5B Tags
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Diodes Incorporated
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