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Vishay General Semiconductor - Diodes Division P4SMA15A-M3/5A
- Part No.:
- P4SMA15A-M3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA15A-M3/5A.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,678
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Product details
Overview
P4SMA15A-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 a 12.8 V standoff voltage (VWM), 14.3–15.8 V breakdown voltage (VBR) at 1 mA, 21.2 V maximum clamping voltage (VC) at 18.9 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 and automotive electronics.
For engineers reviewing the P4SMA15A-M3/5A datasheet, P4SMA15A-M3/5A pinout, P4SMA15A-M3/5A application, or P4SMA15A-M3/5A equivalent, this page delivers verified electrical parameters, thermal derating behavior, clamping performance under surge conditions, and halogen-free RoHS-compliant sourcing status per M3 suffix.
Technical Context
The P4SMA15A-M3/5A operates as a unidirectional avalanche diode with glass-passivated junction, enabling fast response (<1 ns) to ESD and lightning-induced transients. Its 12.8 V stand-off voltage ensures compatibility with 12 V nominal systems while maintaining low leakage (<1 µA at VWM). The device meets AEC-Q101 qualification when ordered with HE3/HM3 suffixes, though the M3/5A variant is commercial-grade.
Thermal resistance is specified at RθJA = 120 °C/W (junction-to-ambient, on minimum pad layout) and RθJL = 30 °C/W (junction-to-lead), supporting reliable operation up to TJ = 150 °C. Peak pulse power drops to 300 W above 91 V, but remains at full 400 W for this 15 V-class device.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 12.8 V - blocks normal 12 V system operation while remaining inactive below transient threshold |
| VBR (Breakdown Voltage) | 14.3–15.8 V at 1 mA - defines precise avalanche onset for predictable clamping initiation |
| VC (Clamping Voltage) | 21.2 V at 18.9 A (10/1000 µs) - limits downstream voltage stress during surge events |
| PPPM (Peak Pulse Power) | 400 W - sustains high-energy transients without failure under standardized waveform |
| IPPM (Peak Pulse Current) | 18.9 A - quantifies maximum surge current the device safely diverts |
| TJ max. | 150 °C - enables use in under-hood or enclosed industrial environments with limited airflow |
| Package | SMA (DO-214AC) - surface-mount footprint compatible with automated assembly and 0.2" × 0.2" copper pads |
Pinout & Package
SMA (DO-214AC) package: molded epoxy case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1 (260 °C peak reflow), polarity indicated by cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or return path; completes conduction path during reverse-biased transient |
| Cathode | High-side connection point | Connected to protected line (e.g., 12 V rail or signal); carries clamped surge current to ground |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Enables robust protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 12 V lines |
| 21.2 V clamping voltage at 18.9 A | Limits voltage overshoot to safe levels for 16 V-rated logic ICs and gate drivers |
| Glass passivated junction | Ensures stable VBR over temperature and long-term reliability in humid or contaminated environments |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets IPC-1752A material declaration requirements for green manufacturing and end-of-life recycling |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking, reducing production overhead |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Card |
|---|---|
Use Scenario: Protecting 12 V supply rails and LIN bus lines from load-dump and inductive switching transients in vehicle body electronics. IC Role / Device Role / Timing Role: Unidirectional TVS placed between fused battery input and LDO regulator input to clamp spikes before regulation. Use Value: Prevents latch-up or permanent damage to microcontrollers and CAN/LIN transceivers during ISO 7637-2 Pulse 5a (load dump) events. |
Use Scenario: Safeguarding 24 V digital input channels from field-wiring induced surges in factory automation controllers. IC Role / Device Role / Timing Role: TVS mounted at terminal block entry point, shunting transients before optocoupler input stage. Use Value: Maintains signal integrity and prevents false triggering of inputs during 1 kV/500 Ω IEC 61000-4-5 surges on long cable runs. |
| Consumer Appliance Motor Drive Board | Telecom Power Supply Front-End |
Use Scenario: Clamping voltage spikes generated by brushed DC motor commutation in washing machine or HVAC blower modules. IC Role / Device Role / Timing Role: TVS placed across motor terminals and across H-bridge supply pins to suppress flyback energy. Use Value: Reduces electromagnetic interference (EMI) and prevents gate oxide damage to MOSFETs during rapid current interruption. |
Use Scenario: Protecting AC-DC adapter primary-side rectifier and secondary-side 12 V bias rail from lightning-induced surges entering via AC mains or Ethernet ports. IC Role / Device Role / Timing Role: Secondary-side TVS on regulated output to absorb residual transients escaping primary-side MOV suppression. Use Value: Ensures uninterrupted operation of PoE-powered devices during EN 61000-4-5 10/700 µs telecom surge tests. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15A | Higher 600 W PPPM, larger SMB (DO-214AA) package, 24.4 V VC at 24.4 A | Requires PCB area increase (~30% larger footprint); better suited for higher-energy surges | Select when surge energy exceeds 400 W capability or when board layout allows larger package |
| 1.5SMC15A | Same 400 W rating but SMC (DO-214AB) package, 21.2 V VC at 18.9 A, identical electrical specs | Same clamping performance but 20% larger body; may affect height-constrained designs | Choose only if existing SMC footprint is standardized and no redesign is permitted |
Compared with SMBJ15A and 1.5SMC15A, the P4SMA15A-M3/5A offers optimal balance of compact SMA footprint, commercial-grade halogen-free compliance, and verified 400 W surge handling - making it ideal for space-constrained 12 V systems where layout efficiency and RoHS traceability are prioritized.
Availability
P4SMA15A-M3/5A is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC input protection, consumer appliance motor drives, and telecom power supply front-ends requiring stable component supply with halogen-free compliance and tape-and-reel delivery.
Supply support for P4SMA15A-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, TVS devices, and power MOSFETs with emphasis on reliability, ruggedness, and automotive-grade qualification.
The P4SMA series is engineered for cost-effective, high-volume transient protection in consumer, industrial, and automotive applications - delivering consistent clamping performance and JEDEC-standard packaging for automated manufacturing.
FAQ
What is the maximum clamping voltage of the P4SMA15A-M3/5A under surge conditions?
The P4SMA15A-M3/5A has a maximum clamping voltage (VC) of 21.2 V when subjected to an 18.9 A peak pulse current with a 10/1000 µs waveform. This value is measured per Figure 1 in Vishay document 88367 and ensures downstream components see no more than 21.2 V during standardized surge events - critical for protecting 16 V-tolerant ICs and gate drivers in 12 V systems. The P4SMA15A-M3/5A maintains this clamping performance across its qualified operating temperature range.
Is the P4SMA15A-M3/5A AEC-Q101 qualified?
No, the P4SMA15A-M3/5A is not AEC-Q101 qualified. It carries the M3 suffix indicating halogen-free, RoHS-compliant commercial-grade construction. AEC-Q101 qualification requires the HE3 or HM3 suffix (e.g., P4SMA15AHE3_A), which denotes additional stress testing for automotive use. The P4SMA15A-M3/5A is intended for industrial and consumer applications where automotive qualification is not mandated.
What does the "/5A" in P4SMA15A-M3/5A signify?
The "/5A" denotes the packaging configuration: 13-inch diameter plastic tape-and-reel with 7500 units per reel. This differs from "/61", which indicates a 7-inch reel with 1800 units. Both share identical electrical and thermal specifications. The P4SMA15A-M3/5A is optimized for high-volume SMT production lines requiring extended reel life and reduced changeover frequency.
How does the P4SMA15A-M3/5A compare to bidirectional TVS diodes like P4SMA15CA?
The P4SMA15A-M3/5A is unidirectional and must be oriented with cathode toward the protected line; it conducts only during reverse overvoltage. In contrast, P4SMA15CA is bidirectional and symmetrical, suitable for AC lines or data buses where polarity reversal occurs. The P4SMA15A-M3/5A offers lower leakage (<1 µA at 12.8 V) and tighter VBR tolerance versus bidirectional variants, making it preferred for DC rail protection where polarity is fixed.
What is the thermal resistance of the P4SMA15A-M3/5A, and how does it affect layout design?
The P4SMA15A-M3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on minimum recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This means a 400 W surge generates ~48 °C instantaneous junction rise - well within the 150 °C limit. Layout must replicate these pad dimensions; reducing pad size increases RθJA and risks thermal runaway during repetitive surges. The P4SMA15A-M3/5A relies on copper area, not heatsinking, for thermal management.
P4SMA15A-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):
- 12.8V
- Voltage - Breakdown (Min):
- 14.3V
- Voltage - Clamping (Max) @ Ipp:
- 21.2V
- Current - Peak Pulse (10/1000µs):
- 18.9A
- Power - Peak Pulse:
- 400W
- 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)
P4SMA15A-M3/5A FAQ
1.How can I place an order for P4SMA15A-M3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA15A-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 P4SMA15A-M3/5A reliable?
The price and inventory of P4SMA15A-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 P4SMA15A-M3/5A is usually 5 days.
3.What payment methods are accepted for P4SMA15A-M3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA15A-M3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA15A-M3/5A?
P4SMA15A-M3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA15A-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 P4SMA15A-M3/5A?
For technical support, including P4SMA15A-M3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA15A-M3/5A requirements.
6.How does Aetrix verify that P4SMA15A-M3/5A is sourced from the original manufacturer or authorized distributors?
All P4SMA15A-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 P4SMA15A-M3/5A meets industry standards.
7.What is the process for return or replacement of P4SMA15A-M3/5A?
All P4SMA15A-M3/5A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA15A-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 P4SMA15A-M3/5A part is unused and in its original packaging.
Return procedure for P4SMA15A-M3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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