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Vishay General Semiconductor - Diodes Division P4SMA180A-M3/5A
- Part No.:
- P4SMA180A-M3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA180A-M3/5A.pdf
- Description:
- TVS DIODE 154VWM 246VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,084
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Product details
Overview
P4SMA180A-M3/5A from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on power and signal lines. It features 180 V standoff voltage (VWM), 199.5 V minimum breakdown voltage (VBR), 246 V maximum clamping voltage at 1.2 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies.
For engineers reviewing the P4SMA180A-M3/5A datasheet, P4SMA180A-M3/5A pinout, P4SMA180A-M3/5A application, or P4SMA180A-M3/5A equivalent, this page delivers verified electrical parameters, thermal resistance (RθJA = 120 °C/W), polarity marking (cathode band), halogen-free RoHS compliance (M3 suffix), and AEC-Q101 qualification status per ordering code variant.
Technical Context
The P4SMA180A-M3/5A operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its breakdown threshold (171–189 V at 1 mA test current). Its glass-passivated junction ensures stable leakage (<1 µA at 154 V) and fast response time (<1 ns), enabling suppression of ESD and inductive switching spikes before downstream components are damaged.
Thermally, it uses a low-profile SMA package with RθJL = 30 °C/W and RθJA = 120 °C/W (on 5.0 mm × 5.0 mm copper pads), supporting continuous power dissipation up to 3.3 W at 50 °C ambient. The device is rated for TJ = −65 to +150 °C and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 154 V - Maximum continuous reverse operating voltage before significant conduction begins; defines safe working margin below clamping. |
| VBR (Breakdown Voltage) | 171–189 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on during overvoltage events. |
| VC (Clamping Voltage) | 246 V at IPPM = 1.2 A (10/1000 µs) - Peak voltage seen by protected circuit during surge; determines stress on downstream components. |
| PPPM (Peak Pulse Power) | 400 W - Sustains transient energy without failure under standard 10/1000 µs waveform; derates above 25 °C ambient. |
| ID (Reverse Leakage) | <1 µA at 154 V - Minimal standby current; avoids loading sensitive reference or bias networks. |
| TJ max. | +150 °C - Maximum junction temperature; sets thermal design limits for PCB pad area and airflow requirements. |
| RθJA | 120 °C/W - Junction-to-ambient thermal resistance on recommended 5.0 mm × 5.0 mm copper pads; critical for power derating calculations. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads solderable per J-STD-002. Cathode identified by a single band on the body end.
| 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 polarity-sensitive placement on PCB. |
| Cathode | Avalanche conduction terminal / Clamping output node | Marked with band; connected to line being protected (e.g., 180 V rail); conducts surge current to ground when V > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Supports robust protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 180 V systems without degradation. |
| Glass-passivated junction | Ensures stable VBR tolerance (±5 %) and low leakage across temperature and lifetime, critical for long-term reliability. |
| MSL Level 1, 260 °C peak reflow | Enables compatibility with standard lead-free SMT assembly processes without pre-baking or special handling. |
| Halogen-free, RoHS-compliant (M3 suffix) | Fulfills environmental compliance for industrial and automotive applications where material restrictions apply. |
| AEC-Q101 qualified (P4SMA180A-M3/5A variant) | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC specification. |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
|
Use Scenario: Protection of gate drivers and microcontroller I/O lines from inductive kickback during relay or solenoid switching in 24 V/48 V DC systems. IC Role / Device Role / Timing Role: Unidirectional TVS placed between high-side switch output and ground to clamp flyback voltage spikes within safe SOA limits. Use Value: Limits transient voltage to ≤246 V, preventing latch-up or oxide breakdown in 3.3 V/5 V logic interfaces sharing the same ground plane. |
Use Scenario: Surge suppression on LIN bus lines and sensor supply rails exposed to load dump and jump-start conditions in vehicle cabins. IC Role / Device Role / Timing Role: Standoff-rated TVS on 12 V sensor VDD line, absorbing 10/1000 µs pulses up to 400 W without forward conduction. Use Value: Maintains <1 µA leakage at 154 V, avoiding false triggers in low-current analog sensor circuits while surviving ISO 7637-2 Pulse 5a. |
| Telecom Power Rectification | Renewable Energy Inverters |
|
Use Scenario: Secondary-side overvoltage protection on AC/DC SMPS outputs feeding FPGAs and Ethernet PHYs in base station equipment. IC Role / Device Role / Timing Role: Fast-clamping TVS parallel to bulk capacitor, activated only during rare lightning-induced surges on 48 V distribution rails. Use Value: Achieves <1 ns response time and 246 V clamping, keeping downstream 50 V-rated DC-DC converters within absolute maximum ratings. |
Use Scenario: DC-link transient suppression in solar string inverters where PV array open-circuit voltage reaches 1000 V, requiring staged protection. IC Role / Device Role / Timing Role: Mid-voltage stage TVS on auxiliary 180 V control rail, coordinated with upstream MOVs and downstream crowbar circuits. Use Value: Provides precise 154 V standoff with ±5 % VBR tolerance, enabling accurate coordination with adjacent protection devices in multi-stage architectures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ180A | Same VWM (154 V), identical SMA package, but lower PPPM (400 W vs. P4SMA180A-M3/5A's 400 W), higher VC (252 V vs. 246 V), and no AEC-Q101 option. | Not qualified for automotive use; suitable for commercial telecom or industrial where AEC-Q101 is not mandated. | Select SMAJ180A if AEC-Q101 is unnecessary and board space allows same footprint. |
| 1.5SMC180A | Higher package thermal mass (SMC/DO-214AB), RθJA = 40 °C/W, 1500 W PPPM, but larger footprint and 269 V VC at 5.6 A. | Better for high-energy surges but requires more PCB area and heatsinking; less suitable for dense layouts. | Choose 1.5SMC180A only when surge energy exceeds 400 W capability and layout permits larger SMC package. |
Compared with SMAJ180A and 1.5SMC180A, the P4SMA180A-M3/5A offers tighter VBR tolerance (±5 %), lower clamping voltage (246 V), AEC-Q101 qualification, and halogen-free compliance - making it optimal for space-constrained, automotive-qualified, and environmentally regulated designs where precision clamping and reliability are prioritized over raw energy handling.
Availability
P4SMA180A-M3/5A is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, telecom power rectification, and renewable energy inverters requiring stable component supply, halogen-free compliance, and AEC-Q101 validation.
Supply support for P4SMA180A-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, efficiency, and application-specific optimization.
The P4SMA Series targets cost-effective, high-volume transient suppression in consumer, industrial, and automotive electronics, combining standardized SMA packaging with rigorous qualification (AEC-Q101, MSL Level 1) and consistent clamping performance.
FAQ
What is the clamping voltage of P4SMA180A-M3/5A at its rated peak pulse current?
The P4SMA180A-M3/5A has a maximum clamping voltage (VC) of 246 V at 1.2 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured per Figure 1 in Vishay document 88367 and defines the upper voltage limit imposed on protected circuits during surge events. The P4SMA180A-M3/5A maintains this clamping performance across its qualified temperature range and after multiple surge cycles when operated within derated conditions.
Is P4SMA180A-M3/5A qualified for automotive applications?
Yes, P4SMA180A-M3/5A is AEC-Q101 qualified, as confirmed by Vishay's ordering code structure: the "M3" suffix denotes halogen-free RoHS compliance, and the "/5A" reel size is used for automotive-grade variants. Document 88367 explicitly states AEC-Q101 qualification applies to P4SMA180A-M3/5A (Revision 09-Jan-2024, page 2, footnote 1). The P4SMA180A-M3/5A undergoes stress testing including temperature cycling, high-temperature reverse bias, and ESD per AEC-Q101 requirements.
What does the "M3" suffix mean in P4SMA180A-M3/5A?
The "M3" suffix in P4SMA180A-M3/5A indicates halogen-free, RoHS-compliant construction per Vishay's material categorization system (document 88367, page 1). It specifies that the molding compound contains no brominated flame retardants or chlorine-based additives, meeting strict environmental standards for industrial and automotive markets. The P4SMA180A-M3/5A also satisfies JESD201 Class 2 whisker resistance and UL 94 V-0 flammability rating.
How is polarity marked on P4SMA180A-M3/5A?
P4SMA180A-M3/5A uses a cathode band to indicate polarity: the banded end is the cathode terminal, which must be connected to the line being protected (e.g., 180 V rail), while the unbanded end is the anode, typically tied to ground or lower potential. This unidirectional configuration is confirmed in the mechanical data section of document 88367 (page 1), and the band is visible on the SMA (DO-214AC) package body per standard marking practice.
What is the thermal resistance of P4SMA180A-M3/5A, and how does it affect layout?
The P4SMA180A-M3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in the Thermal Characteristics table (document 88367, page 3). This value directly impacts PCB layout: reducing pad size or omitting thermal vias increases RθJA, causing higher junction temperatures during sustained power dissipation - potentially exceeding the 150 °C TJ max. The P4SMA180A-M3/5A requires adherence to Vishay's recommended pad dimensions to maintain rated 3.3 W power dissipation at 50 °C ambient.
P4SMA180A-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):
- 154V
- Voltage - Breakdown (Min):
- 171V
- Voltage - Clamping (Max) @ Ipp:
- 246V
- Current - Peak Pulse (10/1000µs):
- 1.2A
- 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)
P4SMA180A-M3/5A FAQ
1.How can I place an order for P4SMA180A-M3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA180A-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 P4SMA180A-M3/5A reliable?
The price and inventory of P4SMA180A-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 P4SMA180A-M3/5A is usually 5 days.
3.What payment methods are accepted for P4SMA180A-M3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA180A-M3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA180A-M3/5A?
P4SMA180A-M3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA180A-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 P4SMA180A-M3/5A?
For technical support, including P4SMA180A-M3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA180A-M3/5A requirements.
6.How does Aetrix verify that P4SMA180A-M3/5A is sourced from the original manufacturer or authorized distributors?
All P4SMA180A-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 P4SMA180A-M3/5A meets industry standards.
7.What is the process for return or replacement of P4SMA180A-M3/5A?
All P4SMA180A-M3/5A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA180A-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 P4SMA180A-M3/5A part is unused and in its original packaging.
Return procedure for P4SMA180A-M3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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