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Vishay General Semiconductor - Diodes Division P4SMA150A-M3/61
- Part No.:
- P4SMA150A-M3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA150A-M3/61.pdf
- Description:
- TVS DIODE 128VWM 207VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P4SMA150A-M3/61 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 (VC) at 1.4 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform - deployed in automotive sensor interfaces, industrial I/O modules, and telecom line protection.
For engineers reviewing the P4SMA150A-M3/61 datasheet, P4SMA150A-M3/61 pinout, P4SMA150A-M3/61 application, or P4SMA150A-M3/61 equivalent, key selection criteria include clamping performance under 1.4 A surge, thermal resistance (RθJA = 120 °C/W), halogen-free RoHS compliance (M3 suffix), and SMA (DO-214AC) package compatibility with automated SMT assembly.
Technical Context
The P4SMA150A-M3/61 operates as a unidirectional avalanche diode, leveraging glass-passivated junction technology to achieve fast response time (<1 ns) and low incremental surge resistance. Its clamping action begins at VBR (143–158 V) and limits transient voltages to ≤207 V at IPPM = 1.4 A under standardized 10/1000 µs pulses.
Rated for TJ = –65 to +150 °C operation, it delivers 3.3 W steady-state power dissipation on infinite heatsink at TA = 50 °C and supports 40 A non-repetitive forward surge current (IFSM, 8.3 ms half-sine). The device meets AEC-Q101 qualification when ordered with HE3/HM3 suffixes, though P4SMA150A-M3/61 itself is commercial-grade halogen-free.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 128 V - Maximum continuous reverse working voltage before leakage exceeds 1 µA; defines safe operating ceiling in normal circuit conditions. |
| VBR (Breakdown) | 143–158 V at IT = 1 mA - Voltage range where avalanche conduction initiates reliably; ensures consistent turn-on across production lots. |
| VC (Clamping) | 207 V at IPPM = 1.4 A - Peak voltage seen by protected circuit during 10/1000 µs transient; critical for downstream IC survival. |
| PPPM | 400 W - Peak pulse power handling capability under standard 10/1000 µs waveform; enables protection against lightning-induced surges and inductive switching spikes. |
| RθJA | 120 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads; determines temperature rise under sustained power dissipation. |
| Package | SMA (DO-214AC) - Surface-mount plastic package with cathode band marking; compatible with JEDEC-standard reflow profiles and J-STD-002 solderability. |
| Compliance | Halogen-free, RoHS-compliant (M3 suffix); UL 94 V-0 molding compound; MSL Level 1 (260 °C peak reflow). |
Pinout & Package
SMA (DO-214AC) package: molded plastic case with matte tin-plated leads, cathode indicated by a band on the body. Designed for high-density PCB layouts and automated pick-and-place placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference node | Connected to lower-potential side of protected line; defines polarity for unidirectional clamping. |
| Cathode | Avalanche conduction terminal / Clamping output node | Connected to higher-potential side (e.g., VCC rail or signal line); conducts surge current to ground or rail during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Enables reliable suppression of high-energy transients common in automotive load-dump and industrial motor drive environments. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients, improving protection margin for 3.3 V/5 V logic and analog front-ends. |
| Glass passivated chip junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity stress per JESD22-A101. |
| MSL Level 1 moisture sensitivity | Eliminates bake requirements prior to reflow; supports direct placement into high-volume SMT lines without dry-pack handling. |
| Halogen-free construction (M3) | Meets IPC-4101D/21 and EU Directive 2015/863 for restricted substances; suitable for green manufacturing programs. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load-dump and ESD events in 12 V/24 V vehicle subsystems. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and chassis ground to clamp transients before they reach sensitive input stages. Use Value: Limits induced voltage to ≤207 V during 1.4 A surge, preserving signal integrity and preventing latch-up in automotive-grade microcontrollers. |
Use Scenario: Safeguarding digital input/output terminals of programmable logic controllers against field-wiring faults, relay coil flyback, and electrostatic discharge in factory automation cabinets. IC Role / Device Role / Timing Role: Standoff-rated TVS mounted at connector interface to shunt surge energy away from isolation barriers and level-shifting circuits. Use Value: Withstands 400 W pulses without degradation, enabling >100,000 surge cycles per IEC 61000-4-5 Level 4 compliance testing. |
| Telecom Line Interface | Power Supply Input Stage |
Use Scenario: Front-end protection for Ethernet PHYs, RS-485 transceivers, and DSL line drivers exposed to lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary clamping device in multi-stage protection network, coordinated with GDTs and series impedance. Use Value: Fast <1 ns response captures initial transient edge; 128 V VWM avoids false triggering during normal 48 V PoE or 56 V AC-coupled signaling. |
Use Scenario: Secondary overvoltage clamp on DC-DC converter inputs or AC-DC rectifier outputs subjected to capacitor discharge or regulator fault conditions. IC Role / Device Role / Timing Role: Fail-safe crowbar element that diverts excess energy during upstream overvoltage, preventing MOSFET gate oxide rupture. Use Value: 207 V VC ensures protected downstream components remain below absolute maximum ratings even during worst-case 1.4 A surge events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ150A | Same VWM (128 V), higher PPPM (600 W), larger SMB (DO-214AA) package (4.6 × 3.9 mm vs. SMA's 4.3 × 2.6 mm). | Preferred where board space allows larger footprint and higher surge margin is required (e.g., outdoor telecom enclosures). | Select SMBJ150A if layout permits larger pad area and system-level surge testing exceeds IEC 61000-4-5 Level 4. |
| 1.5SMC150A | Identical electrical specs (VWM/VBR/VC/PPPM), but in larger SMC (DO-214AB) package (7.1 × 6.2 mm) and with higher RθJA derating. | Used in legacy industrial designs with existing SMC footprints; not suitable for high-density automotive PCBs. | Choose 1.5SMC150A only for backward compatibility with SMC-requiring assemblies; avoid for new compact designs. |
Compared with P4SMA150A-M3/61, SMBJ150A offers 50 % higher surge power in a moderately larger package, while 1.5SMC150A duplicates electrical behavior but occupies >2.5× more board area - making P4SMA150A-M3/61 optimal for space-constrained, high-volume SMT applications requiring halogen-free compliance.
Availability
P4SMA150A-M3/61 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line protection requiring stable component supply, halogen-free compliance, and automated SMT placement support.
Supply support for P4SMA150A-M3/61 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 passive components with emphasis on reliability, efficiency, and application-specific optimization.
The P4SMA Series targets cost-sensitive, high-volume transient protection needs in automotive, industrial, and communications systems - delivering standardized TVS performance in compact, manufacturable surface-mount packages.
FAQ
What is the maximum clamping voltage of the P4SMA150A-M3/61 under surge conditions?
The P4SMA150A-M3/61 has a maximum clamping voltage (VC) of 207 V when subjected to its rated peak pulse current of 1.4 A using the standard 10/1000 µs waveform. This value is measured per Figure 1 in Vishay document 88367 and represents the upper limit of voltage imposed on the protected circuit during transient events - critical for ensuring downstream components remain within their absolute maximum ratings. The P4SMA150A-M3/61 maintains this clamping performance across its qualified operating temperature range.
Is the P4SMA150A-M3/61 suitable for automotive applications requiring AEC-Q101 qualification?
The P4SMA150A-M3/61 is a commercial-grade halogen-free part and is not AEC-Q101 qualified. However, Vishay offers AEC-Q101 variants under the P4SMA150AHM3_B suffix (with "B" revision code), which share identical electrical characteristics but undergo additional stress testing per AEC-Q101. For automotive use, designers must specify the HM3_B variant; the P4SMA150A-M3/61 itself is intended for industrial and telecom applications where full automotive qualification is not mandated.
What does the "M3" suffix indicate in P4SMA150A-M3/61?
The "M3" suffix in P4SMA150A-M3/61 denotes halogen-free, RoHS-compliant construction per IPC-4101D/21 and EU Directive 2015/863, with matte tin-plated leads meeting J-STD-002 solderability requirements. It also signifies compliance with JESD201 Class 2 whisker resistance and UL 94 V-0 flammability rating for the molding compound. This distinguishes it from the "E3" (RoHS-compliant, non-halogen-free) and "HM3" (AEC-Q101 + halogen-free) variants.
How does the thermal resistance of the P4SMA150A-M3/61 affect its power handling in real-world PCB layouts?
The P4SMA150A-M3/61 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. In real-world layouts with smaller pads or no internal copper planes, RθJA increases significantly - potentially exceeding 200 °C/W - limiting safe steady-state power dissipation well below its 3.3 W rating. Derating curves in Figure 2 of document 88367 must be applied to determine usable PD at elevated ambient temperatures.
Can the P4SMA150A-M3/61 be used in bidirectional protection circuits?
No - the P4SMA150A-M3/61 is a unidirectional TVS diode, identifiable by its cathode band marking and specified parameters (VWM, VBR, VC) for single-polarity operation. For bidirectional protection, Vishay specifies the P4SMA150CA variant (with "CA" suffix), which provides symmetrical clamping in both directions and uses different breakdown and clamping definitions. Using P4SMA150A-M3/61 in bidirectional configurations risks failure during reverse-polarity transients.
P4SMA150A-M3/61 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-M3/61 FAQ
1.How can I place an order for P4SMA150A-M3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA150A-M3/61 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-M3/61 reliable?
The price and inventory of P4SMA150A-M3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA150A-M3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA150A-M3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA150A-M3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA150A-M3/61?
P4SMA150A-M3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA150A-M3/61 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-M3/61?
For technical support, including P4SMA150A-M3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA150A-M3/61 requirements.
6.How does Aetrix verify that P4SMA150A-M3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA150A-M3/61 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-M3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA150A-M3/61?
All P4SMA150A-M3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA150A-M3/61, 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-M3/61 part is unused and in its original packaging.
Return procedure for P4SMA150A-M3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA150A-M3/61 Tags
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