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Vishay General Semiconductor - Diodes Division P4SMA250A-M3/5A
- Part No.:
- P4SMA250A-M3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA250A-M3/5A.pdf
- Description:
- TVS DIODE 214VWM 344VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,812
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Product details
Overview
P4SMA250A-M3/5A from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping high-energy transients on power and signal lines. It features a 250 V standoff voltage (VWM), 237–263 V breakdown voltage (VBR) at 1 mA, 344 A peak pulse current (IPPM), 3.3 W steady-state power dissipation, and 0.87 A maximum reverse leakage at VWM - deployed in industrial power supplies and automotive sensor interfaces.
For engineers reviewing the P4SMA250A-M3/5A datasheet, P4SMA250A-M3/5A pinout, P4SMA250A-M3/5A application, or P4SMA250A-M3/5A equivalent, this page delivers verified electrical parameters, thermal derating behavior, clamping performance under 10/1000 µs surge, polarity marking convention, and AEC-Q101 qualification status for automotive-grade deployment.
Technical Context
The P4SMA250A-M3/5A operates as a unidirectional avalanche diode with cathode-band polarity marking, leveraging glass-passivated junction technology for stable breakdown and low incremental surge resistance. Its clamping voltage of 344 V at 344 A (10/1000 µs waveform) ensures robust protection of downstream MOSFETs and ICs against inductive switching spikes.
Thermal design relies on RθJA = 120 °C/W (typ.) and RθJL = 30 °C/W (typ.), with derating above 25 °C per Figure 2. It meets MSL Level 1 (J-STD-020) and is halogen-free, RoHS-compliant, and AEC-Q101 qualified (suffix HM3_B).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 214 V - Maximum continuous reverse voltage before conduction begins; defines operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 237–263 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on during overvoltage events. |
| VC (Clamping Voltage) | 344 V at IPPM - Peak voltage seen by protected circuit during 10/1000 µs surge; critical for safe IC/MOSFET stress limits. |
| IPPM (Peak Pulse Current) | 344 A - Maximum non-repetitive surge current it can divert without failure; validated per Fig. 3 waveform. |
| PPPM (Peak Pulse Power) | 400 W - Surge energy handling capability under standard 10/1000 µs test; rated up to 150 °C junction temperature. |
| ID (Reverse Leakage) | 1.0 µA max at VWM - Minimal standby power loss and signal integrity impact in high-impedance circuits. |
| TJ max | 150 °C - Maximum allowable junction temperature; sets thermal layout requirements for PCB copper pad area (0.2" × 0.2"). |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile, matte tin-plated leads solderable per J-STD-002. Cathode identified by black band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference node | Connected to lower-potential side (e.g., GND or return path); defines unidirectional conduction direction. |
| Cathode | Avalanche clamping node / Surge current sink | Marked with black band; connected to protected line (e.g., 24 V rail or sensor input) to clamp positive transients. |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Enables protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 24–48 V systems without external series impedance. |
| Glass passivated chip junction | Ensures long-term stability of VBR and low parameter drift across temperature and lifetime cycling. |
| AEC-Q101 qualified (HM3_B variant) | Validated for automotive under-hood applications including engine control modules and body electronics requiring reliability at 150 °C. |
| MSL Level 1, 260 °C reflow compatible | Supports standard SMT assembly without moisture sensitivity concerns or baking requirements. |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets environmental compliance mandates for industrial and automotive OEM supply chains. |
Applications
| Industrial Power Supply Protection | Automotive Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V DC input rails in PLC I/O modules against load dump and relay coil flyback. IC Role / Device Role / Timing Role: Unidirectional TVS placed between rail and ground to clamp positive transients before they reach DC-DC converters and microcontrollers. Use Value: Limits rail voltage to ≤344 V during 344 A surges, preventing latch-up or gate oxide damage in downstream Si MOSFETs and PMICs. |
Use Scenario: Safeguarding LIN bus or analog sensor inputs (e.g., pressure, temperature) in engine bay ECUs exposed to ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Standoff-clamp device on signal line with 214 V VWM, ensuring normal operation while suppressing >250 V transients. Use Value: Maintains signal integrity below 1 µA leakage at 214 V, while clamping fast-rising spikes within 1 ns response time to protect 3.3 V ADC front-ends. |
| Telecom Line Card Surge Suppression | Renewable Energy Inverter DC Link Protection |
Use Scenario: Secondary-level protection on -48 V telecom distribution boards subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Unidirectional clamping element on negative rail, referenced to system ground, absorbing repetitive 10/1000 µs transients. Use Value: Withstands 0.01% duty cycle surges up to 400 W, enabling reliable operation in central office environments with frequent grid disturbances. |
Use Scenario: Overvoltage suppression on photovoltaic string inputs (up to 1000 Vdc) feeding inverters, where partial shading causes transient voltage doubling. IC Role / Device Role / Timing Role: High-VWM TVS used in multi-stage protection schemes to absorb localized fast transients before MOVs engage. Use Value: Provides precise 214 V clamping margin above nominal string voltage, reducing stress on upstream capacitors and IGBT gate drivers during rapid voltage excursions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ250A | Same VWM/VBR/VC ratings but in larger SMB (DO-214AA) package; higher RθJA (90 °C/W) and 600 W PPPM rating. | Better suited for higher-power, lower-density layouts where board space allows larger footprint and enhanced thermal mass. | Select SMBJ250A when PCB layout permits larger pad area and higher surge margin is required beyond 400 W. |
| 1.5KE250A | Through-hole DO-201 package; identical electrical specs but higher mounting thermal resistance and no MSL rating. | Applicable only in legacy through-hole designs or prototyping where reflow compatibility is not required. | Choose 1.5KE250A only for hand-soldered or wave-soldered assemblies lacking SMT infrastructure. |
Compared with P4SMA250A-M3/5A, SMBJ250A offers higher surge capacity in a less compact form factor, while 1.5KE250A sacrifices SMT manufacturability and thermal performance for through-hole compatibility - making P4SMA250A-M3/5A optimal for space-constrained, high-volume automotive and industrial SMT production.
Availability
P4SMA250A-M3/5A is available at Aetrix Electronics and suitable for industrial power supplies, automotive sensor interfaces, telecom line cards, and renewable energy inverters requiring stable component supply, AEC-Q101 qualification, and halogen-free compliance.
Supply support for P4SMA250A-M3/5A 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, thermal performance, and automotive-grade validation.
The P4SMA Series targets cost-sensitive, high-volume transient suppression needs in automotive, industrial, and telecom applications - delivering standardized 400 W surge capability in the compact SMA package with AEC-Q101 and RoHS options.
FAQ
What is the clamping voltage of P4SMA250A-M3/5A under a 10/1000 µs surge?
The P4SMA250A-M3/5A has a maximum clamping voltage (VC) of 344 V at its rated peak pulse current (IPPM) of 344 A under the standard 10/1000 µs waveform. This value is measured per Figure 1 and Table 1 in the Vishay datasheet (Doc. #88367), and defines the upper voltage limit imposed on protected circuits during surge events. The P4SMA250A-M3/5A maintains this clamping performance across its specified operating temperature range.
Is P4SMA250A-M3/5A qualified for automotive applications?
Yes, P4SMA250A-M3/5A is AEC-Q101 qualified under the HM3_B automotive ordering variant, as confirmed in the "Ordering Information" section (page 3) and "Notes" (page 2) of the Vishay datasheet. The M3/5A suffix denotes halogen-free, RoHS-compliant construction, and the B revision code indicates automotive qualification. This makes P4SMA250A-M3/5A suitable for under-hood and chassis-mounted automotive electronics operating up to 150 °C junction temperature.
What does the "M3/5A" suffix mean in P4SMA250A-M3/5A?
The "M3" suffix indicates halogen-free, RoHS-compliant construction with JESD 201 Class 2 whisker resistance; "5A" specifies packaging in 13-inch diameter plastic tape and reel with 7500 units per reel. This differs from "/61" (7-inch reel, 1800 units) and confirms full compliance with modern environmental and manufacturing standards. The P4SMA250A-M3/5A thus supports automated SMT placement and meets Tier 1 automotive supply chain requirements.
How does P4SMA250A-M3/5A compare to bidirectional variants like P4SMA250CA?
P4SMA250A-M3/5A is unidirectional with cathode-band polarity, intended for DC rail protection where only positive transients occur; P4SMA250CA is bidirectional, supporting AC or dual-polarity signal lines. Their VWM (214 V vs. 214 V), VBR (237–263 V vs. same), and VC (344 V vs. 344 V) match, but P4SMA250CA lacks polarity marking and exhibits symmetrical clamping in both directions. Select P4SMA250A-M3/5A for grounded-rail protection and P4SMA250CA for floating or AC-coupled paths.
What is the thermal resistance and recommended PCB layout for P4SMA250A-M3/5A?
P4SMA250A-M3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W and junction-to-lead (RθJL) of 30 °C/W, measured on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal (per datasheet Figure 2 and "Mechanical Data"). To maintain reliability at full power, use minimum recommended pad layout with thermal vias and avoid narrow traces. Derating begins above 25 °C ambient, reaching 50% power at ~100 °C case temperature.
P4SMA250A-M3/5A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- P4SMA, TransZorb®
- Packaging:
- Tape & Reel (TR)
- 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):
- 870mA
- Power - Peak Pulse:
- 300W
- 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-214AC (SMA)
P4SMA250A-M3/5A FAQ
1.How can I place an order for P4SMA250A-M3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA250A-M3/5A 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 P4SMA250A-M3/5A reliable?
The price and inventory of P4SMA250A-M3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA250A-M3/5A is usually 5 days.
3.What payment methods are accepted for P4SMA250A-M3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA250A-M3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA250A-M3/5A?
P4SMA250A-M3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA250A-M3/5A 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 P4SMA250A-M3/5A?
For technical support, including P4SMA250A-M3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA250A-M3/5A requirements.
6.How does Aetrix verify that P4SMA250A-M3/5A is sourced from the original manufacturer or authorized distributors?
All P4SMA250A-M3/5A 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 P4SMA250A-M3/5A meets industry standards.
7.What is the process for return or replacement of P4SMA250A-M3/5A?
All P4SMA250A-M3/5A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA250A-M3/5A, 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 P4SMA250A-M3/5A part is unused and in its original packaging.
Return procedure for P4SMA250A-M3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA250A-M3/5A Tags
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