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Vishay General Semiconductor - Diodes Division P4SMA150A-M3/5A
- Part No.:
- P4SMA150A-M3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA150A-M3/5A.pdf
- Description:
- TVS DIODE 128VWM 207VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,292
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Product details
Overview
P4SMA150A-M3/5A from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 150 V standoff voltage (VWM), 143–158 V breakdown voltage (VBR) at 1 mA, 207 V maximum clamping voltage at 1.4 A peak pulse current, and 400 W peak pulse power capability with a 10/1000 µs waveform - deployed in automotive sensor interfaces, industrial I/O modules, and telecom line protection.
For engineers reviewing the P4SMA150A-M3/5A datasheet, P4SMA150A-M3/5A pinout, P4SMA150A-M3/5A application, or P4SMA150A-M3/5A equivalent, this page delivers verified electrical parameters, package dimensions, clamping behavior under surge conditions, thermal derating curves, and AEC-Q101-qualified alternatives for automotive-grade design-in.
Technical Context
The P4SMA150A-M3/5A operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its specified breakdown range (143–158 V). Its glass-passivated junction ensures stable VBR tolerance and low leakage (<1.0 µA at 128 V), while its SMA (DO-214AC) package supports automated placement and meets MSL level 1 reflow standards up to 260 °C peak.
It delivers 400 W peak pulse power (10/1000 µs) at 25 °C, derating linearly above TA = 25 °C per Figure 2, with typical junction-to-ambient thermal resistance of 120 °C/W. The device is halogen-free, RoHS-compliant, and qualified to AEC-Q101 when ordered with HM3 suffix - though P4SMA150A-M3/5A itself carries the commercial-grade M3 suffix.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 128 V - Maximum continuous reverse operating voltage before significant conduction begins; defines safe working margin below clamping threshold. |
| VBR (Breakdown Voltage) | 143–158 V at 1 mA - Confirmed avalanche initiation range; ensures predictable turn-on during transients without premature triggering. |
| VC (Clamping Voltage) | 207 V at IPPM = 1.4 A - Peak voltage seen across protected circuit during 10/1000 µs surge; limits stress on downstream ICs like microcontrollers or RS-485 transceivers. |
| PPPM (Peak Pulse Power) | 400 W (10/1000 µs) - Sustains high-energy surges common in automotive load-dump or inductive switching events without failure. |
| ID (Reverse Leakage) | ≤1.0 µA at VWM - Negligible standby current; avoids power loss or false triggering in battery-powered or low-power sensor nodes. |
| TJ max. | 150 °C - Enables reliable operation in under-hood automotive environments or enclosed industrial enclosures without forced cooling. |
| RθJA | 120 °C/W - Defines thermal limit for PCB pad layout; requires ≥0.2" × 0.2" copper pads per terminal for full-rated power handling. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads solderable per J-STD-002. Cathode indicated by band; polarity critical for unidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference node | Connected to ground or low-impedance return path; establishes reference for clamping action toward cathode. |
| Cathode | Transient voltage sink / Clamping output node | Connected to protected line (e.g., CAN_H, 24 V rail); conducts surge current to anode during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Withstands high-energy transients from relay coil decay or ESD coupling without degradation - validated per IEC 61000-4-5. |
| Glass-passivated junction | Ensures stable VBR over temperature and lifetime; eliminates parameter drift in harsh thermal cycling environments. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without pre-baking; reduces manufacturing complexity and cost. |
| AEC-Q101 qualification path | M3 suffix indicates halogen-free, RoHS-compliant construction; HE3/HM3 variants available for full automotive qualification. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 Pulse 1/2a), improving protection fidelity. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting analog sensor outputs (e.g., pressure, temperature) in engine control units exposed to load-dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor signal line and chassis ground to clamp negative-going transients and positive spikes. Use Value: Limits voltage to ≤207 V during 10/1000 µs surges, preventing damage to 3.3 V or 5 V ADC front-ends and maintaining signal integrity. |
Use Scenario: Shielding digital input channels on programmable logic controllers from field-wiring induced surges in factory automation. IC Role / Device Role / Timing Role: Standoff protection on 24 V DC inputs, absorbing repetitive switching transients from solenoid valves and contactors. Use Value: Withstands 400 W pulses at 0.01% duty cycle, enabling long-term reliability in high-noise industrial settings without derating. |
| Telecom Line Interface | Power Supply Input Stage |
Use Scenario: Safeguarding RS-485 transceiver bus lines against lightning-induced surges in outdoor base station equipment. IC Role / Device Role / Timing Role: Paired unidirectional TVS diodes (P4SMA150A-M3/5A + P4SMA150CA-M3/5A) on differential pair to clamp common-mode overvoltages. Use Value: Clamps to 207 V within nanoseconds, preserving data integrity and preventing latch-up in half-duplex communication ICs. |
Use Scenario: Secondary-side overvoltage suppression on 12–48 V DC power rails feeding FPGA or DSP subsystems. IC Role / Device Role / Timing Role: Final-stage transient suppressor after bulk filtering and regulation, catching residual spikes missed by upstream MOVs or capacitors. Use Value: Low leakage (<1 µA) avoids loading regulated rails; 150 V VWM provides margin above nominal 12/24/48 V systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ150A-T3 | Same VWM (150 V), higher PPPM (600 W), SMB package (DO-214AA) - 2.6 mm wider body, 0.2 mm taller. | Higher surge rating suits infrequent but extreme transients (e.g., utility grid coupling); less suitable for dense layouts. | Select when board space allows larger footprint and 600 W margin is required beyond P4SMA150A-M3/5A's 400 W rating. |
| 1.5SMC150A | Same VWM/VBR/VC specs, but SMC (DO-214AB) package - 0.3 mm thicker, higher RθJA (90 °C/W vs. 120 °C/W). | Better thermal performance enables higher average power handling; requires larger pad area for optimal derating. | Choose for thermally constrained designs where junction temperature rise must be minimized under repeated surges. |
Compared with SMBJ150A-T3 and 1.5SMC150A, the P4SMA150A-M3/5A offers the smallest footprint (SMA), lowest profile, and tightest integration into space-limited consumer or telecom modules - while delivering verified 400 W protection with AEC-Q101-ready construction options.
Availability
P4SMA150A-M3/5A is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O protection, telecom line interfaces, and DC power supply input stages requiring stable component supply, halogen-free compliance, and consistent surge immunity performance.
Supply support for P4SMA150A-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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The P4SMA Series is engineered for surface-mount transient voltage suppression in automotive, industrial, and communications systems - balancing high surge capability, compact packaging, and process-controlled parametric consistency.
FAQ
What is the maximum clamping voltage of the P4SMA150A-M3/5A under a 10/1000 µs surge?
The P4SMA150A-M3/5A has a maximum clamping voltage (VC) of 207 V at 1.4 A peak pulse current (IPPM) under a 10/1000 µs waveform. This value is measured per standard test conditions and defines the upper voltage limit imposed on protected circuits during transient events - critical for ensuring compatibility with 24 V or 48 V system-level ICs. The P4SMA150A-M3/5A maintains this clamping performance across its rated temperature range.
Is the P4SMA150A-M3/5A AEC-Q101 qualified?
The P4SMA150A-M3/5A carries the M3 suffix, indicating halogen-free, RoHS-compliant construction for commercial-grade use. While it shares the same die and process as AEC-Q101-qualified variants (e.g., P4SMA150AHM3_A/I), the P4SMA150A-M3/5A itself is not certified to AEC-Q101. For automotive applications requiring formal qualification, specify P4SMA150AHM3_A/I or P4SMA150AHE3_A/I instead of P4SMA150A-M3/5A.
What is the standoff voltage (VWM) and why does it matter for P4SMA150A-M3/5A?
The P4SMA150A-M3/5A has a standoff voltage (VWM) of 128 V - the maximum DC or RMS voltage that can be continuously applied without triggering significant conduction. This parameter ensures the device remains non-conductive during normal operation while providing sufficient margin below its 143–158 V breakdown range. Selecting a VWM correctly prevents leakage-related power loss or false triggering in 12 V, 24 V, or 48 V systems where P4SMA150A-M3/5A is commonly deployed.
How does the thermal resistance of P4SMA150A-M3/5A affect PCB layout?
The P4SMA150A-M3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W, which means its junction temperature rises 120 °C per watt dissipated without heatsinking. To achieve full 400 W pulse rating, the datasheet specifies mounting on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. Reducing pad size increases thermal impedance, requiring derating of peak power - so PCB layout directly determines real-world surge capability of the P4SMA150A-M3/5A.
Can P4SMA150A-M3/5A be used in bidirectional protection circuits?
No - the P4SMA150A-M3/5A is a unidirectional TVS diode, identifiable by its cathode band marking and specified parameters (VWM, VBR, VC) for reverse-biased operation only. For bidirectional protection, use the CA-suffixed variant P4SMA150CA-M3/5A, which provides symmetrical clamping in both polarities. Substituting P4SMA150A-M3/5A in a bidirectional application risks failure during positive transients due to lack of forward conduction capability.
P4SMA150A-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):
- 128V
- Voltage - Breakdown (Min):
- 143V
- Voltage - Clamping (Max) @ Ipp:
- 207V
- Current - Peak Pulse (10/1000µs):
- 1.4A
- 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)
P4SMA150A-M3/5A FAQ
1.How can I place an order for P4SMA150A-M3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA150A-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 P4SMA150A-M3/5A reliable?
The price and inventory of P4SMA150A-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 P4SMA150A-M3/5A is usually 5 days.
3.What payment methods are accepted for P4SMA150A-M3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA150A-M3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA150A-M3/5A?
P4SMA150A-M3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA150A-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 P4SMA150A-M3/5A?
For technical support, including P4SMA150A-M3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA150A-M3/5A requirements.
6.How does Aetrix verify that P4SMA150A-M3/5A is sourced from the original manufacturer or authorized distributors?
All P4SMA150A-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 P4SMA150A-M3/5A meets industry standards.
7.What is the process for return or replacement of P4SMA150A-M3/5A?
All P4SMA150A-M3/5A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA150A-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 P4SMA150A-M3/5A part is unused and in its original packaging.
Return procedure for P4SMA150A-M3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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