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Vishay General Semiconductor - Diodes Division P6SMB250A-M3/5B
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- Part No.:
- P6SMB250A-M3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB250A-M3/5B.pdf
- Description:
- TVS DIODE 214VWM 344VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,459
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Product details
Overview
P6SMB250A-M3/5B from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, rated for 250 V standoff voltage (VWM), 263 V minimum breakdown voltage (VBR), and 344 V maximum clamping voltage (VC) at 1.74 A peak pulse current (IPPM). It delivers 600 W peak pulse power with 10/1000 μs waveform and is halogen-free, RoHS-compliant, and qualified to AEC-Q101 for automotive applications.
For engineers reviewing the P6SMB250A-M3/5B datasheet, P6SMB250A-M3/5B pinout, P6SMB250A-M3/5B application, or P6SMB250A-M3/5B equivalent, key selection considerations include its 214 V standoff rating, low 0.110 %/°C VBR temperature coefficient, 100 °C/W junction-to-ambient thermal resistance, and suitability for high-voltage DC bus protection in industrial power supplies and automotive ECUs.
Technical Context
The P6SMB250A-M3/5B operates as a unidirectional avalanche clamp, activating when reverse voltage exceeds 237–263 V (VBR at 1 mA), limiting transient-induced overvoltage to ≤344 V at 1.74 A. Its glass-passivated junction ensures stable breakdown and low leakage (<1 μA at 214 V).
Designed for automated SMT placement on standard PCB pads (0.2" × 0.2"), it sustains repetitive 10/1000 μs pulses at 0.01 % duty cycle and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. Polarity is marked by a cathode band; no marking on bidirectional variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 214 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (Breakdown) | 237–263 V at 1 mA - Confirmed avalanche initiation range under standardized test current |
| VC (Clamping) | 344 V at IPPM = 1.74 A - Peak voltage seen across device during 10/1000 μs transient event |
| PPPM | 600 W - Surge energy handling capacity under standard 10/1000 μs waveform |
| RθJA | 100 °C/W - Thermal resistance from junction to ambient air on recommended copper pad layout |
| TJ max. | +150 °C - Maximum allowable junction temperature for reliable long-term operation |
| Leakage (ID) | <1 μA at 214 V - Minimal reverse current during normal operation, preserving system efficiency |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode indicated by band on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side of protected circuit; conducts during forward surge (e.g., ESD events) |
| Cathode | Reverse-biased clamping terminal | Connected to higher-potential rail; initiates avalanche breakdown when reverse voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Handles high-energy transients common in 24–48 V industrial and automotive power rails without failure |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity, and mechanical shock |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., load dump, inductive switching) |
| MSL Level 1 rating | Enables standard reflow assembly without moisture sensitivity concerns or baking requirements |
| Halogen-free construction (M3 suffix) | Meets environmental compliance mandates for automotive and industrial end equipment |
Applications
| Industrial Power Supply Protection | Automotive Engine Control Unit (ECU) |
|---|---|
Use Scenario: Protecting 24 V DC input stage of programmable logic controllers against load-dump transients and relay coil flyback. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed across input terminals to clamp surges before they reach downstream regulators and microcontrollers. Use Value: Limits transient voltage to ≤344 V, preventing damage to 36 V-rated input capacitors and LDOs while maintaining system uptime. |
Use Scenario: Safeguarding CAN bus interface and sensor supply lines in engine control modules exposed to ISO 7637-2 Pulse 5a (load dump). IC Role / Device Role / Timing Role: Primary clamping device on main 12 V/24 V battery rail, coordinated with secondary TVS on signal lines. Use Value: Withstands 600 W pulses and operates up to +150 °C junction temperature, meeting automotive under-hood thermal requirements. |
| Telecom DC Feeder Line Protection | Renewable Energy Inverter DC Link |
Use Scenario: Shielding remote radio head power inputs from lightning-induced surges on outdoor telecom feeder cables. IC Role / Device Role / Timing Role: First-line transient suppressor on -48 V DC input, upstream of DC/DC converters and monitoring ICs. Use Value: Clamps 10/1000 μs surges to 344 V with <1 μA leakage, minimizing standby power loss in always-on base stations. |
Use Scenario: Protecting high-voltage DC link (up to 400 V) in solar string inverters from grid-switching transients and capacitor discharge events. IC Role / Device Role / Timing Role: Parallel-mounted TVS on DC bus to absorb short-duration overvoltages exceeding IGBT blocking rating. Use Value: 237–263 V VBR range aligns with 250 V nominal bus design, enabling precise clamping without premature conduction. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ250A | Same VWM (214 V), but lower PPPM (400 W); SMA package (smaller footprint, higher RθJA = 150 °C/W) | Limited to lower-energy transients; unsuitable for automotive load dump per ISO 7637-2 without derating | Select only for space-constrained, non-automotive designs where 400 W surge margin suffices |
| SMCJ250A | Same VWM and PPPM (600 W), but larger SMC (DO-214AB) package; higher IPPM (2.9 A) and lower VC (328 V) | Better thermal performance (RθJA = 50 °C/W) and tighter clamping, but requires larger PCB area | Prefer for high-reliability industrial systems needing lower clamping voltage and enhanced thermal margin |
Compared with SMAJ250A, P6SMB250A-M3/5B provides 50 % higher surge power handling and superior thermal robustness; versus SMCJ250A, it trades 16 V higher clamping for 40 % smaller footprint-critical for dense automotive PCB layouts.
Availability
P6SMB250A-M3/5B is available at Aetrix Electronics and suitable for industrial power supplies, automotive engine control units, telecom DC feeders, and renewable energy inverters requiring stable component supply and AEC-Q101-compliant surge protection.
Supply support for P6SMB250A-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, efficiency, and automotive qualification.
The P6SMB Series targets high-energy transient suppression in harsh environments, delivering standardized 600 W surge capability in compact SMB packages for cost-sensitive yet mission-critical applications.
FAQ
What is the maximum clamping voltage of the P6SMB250A-M3/5B under standard test conditions?
The P6SMB250A-M3/5B has a maximum clamping voltage (VC) of 344 V when subjected to a 10/1000 μs waveform at its rated peak pulse current of 1.74 A. This value is measured per JEDEC standards and reflects the highest voltage the device allows across its terminals during a defined transient event, ensuring downstream components remain within safe operating limits. The P6SMB250A-M3/5B maintains this clamping performance across its specified temperature range.
Is the P6SMB250A-M3/5B suitable for automotive applications?
Yes, the P6SMB250A-M3/5B is AEC-Q101 qualified (suffix D indicates automotive qualification per ordering table note), making it suitable for automotive applications such as engine control units, body control modules, and ADAS power rails. Its halogen-free (M3) construction, MSL Level 1 rating, and guaranteed operation from –65 °C to +150 °C junction temperature meet stringent automotive reliability requirements. The P6SMB250A-M3/5B is explicitly validated for load dump and inductive switching transients per ISO 7637-2.
How does the P6SMB250A-M3/5B differ from bidirectional versions like P6SMB250CA?
The P6SMB250A-M3/5B is unidirectional and features a cathode band marking; it conducts only in forward bias and clamps reverse transients above VBR. In contrast, P6SMB250CA is bidirectional with symmetrical clamping in both directions and no polarity marking. The P6SMB250A-M3/5B offers lower leakage and is preferred for DC applications where polarity is fixed, while P6SMB250CA suits AC or floating signal line protection. Their VWM and VC values differ due to distinct test configurations.
What is the thermal resistance of the P6SMB250A-M3/5B, and how does it affect PCB layout?
The P6SMB250A-M3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes minimum recommended pad layout per Vishay's datasheet Figure 5. To maintain safe junction temperatures under repeated surges, designers must allocate adequate copper area and avoid excessive trace length or isolation. The P6SMB250A-M3/5B's thermal performance directly impacts its ability to sustain multiple transient events without thermal runaway.
Does the P6SMB250A-M3/5B require derating at elevated ambient temperatures?
Yes, the P6SMB250A-M3/5B requires derating above TA = 25 °C, as shown in Figure 2 of the Vishay datasheet. Its peak pulse power (PPPM) decreases linearly with increasing ambient temperature-e.g., at 85 °C ambient, PPPM drops to approximately 420 W. Derating ensures the junction temperature remains below 150 °C during surge events. The P6SMB250A-M3/5B's specified thermal resistance and derating curve enable accurate thermal modeling for real-world operating conditions.
P6SMB250A-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):
- 214V
- Voltage - Breakdown (Min):
- 237V
- Voltage - Clamping (Max) @ Ipp:
- 344V
- Current - Peak Pulse (10/1000µs):
- 1.74A
- 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)
P6SMB250A-M3/5B FAQ
1.How can I place an order for P6SMB250A-M3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB250A-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 P6SMB250A-M3/5B reliable?
The price and inventory of P6SMB250A-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 P6SMB250A-M3/5B is usually 5 days.
3.What payment methods are accepted for P6SMB250A-M3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB250A-M3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB250A-M3/5B?
P6SMB250A-M3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB250A-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 P6SMB250A-M3/5B?
For technical support, including P6SMB250A-M3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB250A-M3/5B requirements.
6.How does Aetrix verify that P6SMB250A-M3/5B is sourced from the original manufacturer or authorized distributors?
All P6SMB250A-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 P6SMB250A-M3/5B meets industry standards.
7.What is the process for return or replacement of P6SMB250A-M3/5B?
All P6SMB250A-M3/5B units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB250A-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 P6SMB250A-M3/5B part is unused and in its original packaging.
Return procedure for P6SMB250A-M3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB250A-M3/5B Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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