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Taiwan Semiconductor Corporation P4SMA15
- Part No.:
- P4SMA15
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA15.pdf
- Description:
- 400W, 15V, 10%, UNIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:9,686
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Product details
Overview
P4SMA15 from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AC (SMA) package, designed for overvoltage protection of DC power rails and signal lines. It features a 13.5–16.5 V breakdown voltage (VBR), 12.1 V working stand-off voltage (VWM), 22.0 V clamping voltage (VC) at 19.0 A peak pulse current, and 400 W peak pulse power rating under 10/1000 µs waveform - deployed in SMPS input stages and DC/DC converter inputs.
For engineers reviewing the P4SMA15 datasheet, P4SMA15 pinout, P4SMA15 application, or P4SMA15 equivalent, key selection criteria include its unidirectional polarity, 1 µA max reverse leakage at VWM, -55°C to +150°C operating junction temperature, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, and suitability for automated SMT placement in high-reliability industrial power supplies.
Technical Context
The P4SMA15 operates as a unidirectional avalanche diode with glass-passivated junction, enabling fast response (<1.0 ps) to transient surges while maintaining low leakage (<1 µA at 12.1 V). Its clamping action limits voltage excursions during ESD or load-dump events in automotive and industrial DC systems.
Designed for single-die configuration in DO-214AC package, it supports bidirectional variants only with "C" or "CA" suffix (e.g., P4SMA15C); the P4SMA15 itself is strictly unidirectional, with cathode band marking and forward voltage ≤3.5 V at 25 A surge current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR min/max | 13.5 V / 16.5 V - defines minimum and maximum voltage at which avalanche conduction begins under 1.0 mA test current |
| VWM | 12.1 V - maximum continuous DC or RMS voltage the device blocks without significant leakage |
| VC @ IPPM | 22.0 V at 19.0 A - clamped voltage during 10/1000 µs surge, limiting downstream circuit stress |
| PPPM | 400 W - peak pulse power handling capability, derated above 25°C per Fig.2 |
| IR @ VWM | ≤1 µA - ensures minimal standby power loss and signal integrity in high-impedance circuits |
| TJ max | +150 °C - enables operation in enclosed power converters and under-hood automotive environments |
| Package | DO-214AC (SMA) - industry-standard surface-mount outline compatible with JEDEC MS-013, 7,500 pcs/reel |
Pinout & Package
DO-214AC (SMA) package: molded plastic case with matte tin-plated leads, polarity indicated by cathode band on one end; weight ≈ 0.060 g; meets UL 94V-0 and JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection | Connected to ground or low-potential rail; conducts during reverse-transient clamping |
| Cathode | High-side connection | Connected to protected line (e.g., +12 V rail); marked by band; blocks VWM until breakdown |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity |
| Fast response time | <1.0 ps - enables suppression of nanosecond-scale ESD transients before IC damage occurs |
| ISO 7637-2 compliance | Validated for Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling) in automotive ECUs |
| Moisture sensitivity level | MSL Level 1 - no floor life limitation; safe for standard reflow without baking |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for green manufacturing |
Applications
| Switching Mode Power Supply (SMPS) Input Protection | On-board DC/DC Converter Input |
|---|---|
Use Scenario: Protects AC/DC adapter front-end rectifier output or bulk capacitor input against line surges and lightning-induced transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between +VIN and GND, clamping positive-going transients while blocking normal 12–24 V DC operation. Use Value: Limits transient voltage to ≤22.0 V, preventing overvoltage failure of downstream PWM controllers and MOSFETs rated for ≤30 V. | Use Scenario: Shields point-of-load (POL) DC/DC modules in telecom base stations from board-level switching noise and hot-swap transients. IC Role / Device Role / Timing Role: Standoff-rated TVS on primary-side input rail, activated only during >13.5 V excursions lasting ≥10 µs. Use Value: Withstands 400 W peak pulses without degradation, preserving regulation accuracy and enabling compact layout due to DO-214AC footprint. |
| Industrial Lighting Driver Protection | Automotive Body Control Module (BCM) Power Rail |
Use Scenario: Safeguards LED driver ICs in streetlight ballasts exposed to grid fluctuations and nearby motor switching. IC Role / Device Role / Timing Role: Unidirectional clamp across constant-current source input, absorbing repetitive 10/1000 µs surges up to 19 A. Use Value: 1 µA leakage at 12.1 V prevents false triggering and maintains dimming precision in analog/PWM-controlled drivers. | Use Scenario: Installed on 12 V battery feed to BCM microcontroller and CAN transceiver power domains. IC Role / Device Role / Timing Role: First-line defense against ISO 7637-2 Pulse 1 (load dump) and Pulse 2b (inductive kickback) in vehicle electrical systems. Use Value: Clamps 12 V system transients to 22.0 V within <1 ps, protecting 5 V LDOs and 3.3 V logic without requiring additional RC filtering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15A | DO-214AA (SMB) package; 15 V nominal VBR; 24.4 V VC @ 16.3 A; same 400 W rating | Larger footprint (SMB vs SMA); higher thermal mass but lower board density | Select SMBJ15A when PCB layout allows larger pad area and higher surge margin is needed beyond 19 A |
| 1.5SMC15A | DO-214AB (SMC) package; 15 V nominal VBR; 24.4 V VC @ 16.3 A; 1500 W rating | Higher power rating but physically larger; not drop-in compatible due to different lead spacing and body size | Choose 1.5SMC15A only for designs requiring >400 W surge handling and where SMC mounting is acceptable |
Compared with P4SMA15, SMBJ15A offers identical electrical performance in a slightly larger DO-214AA package, while 1.5SMC15A provides higher surge capacity but requires full mechanical redesign - making P4SMA15 optimal for space-constrained, high-volume SMT applications needing precise 12.1 V standoff and 22.0 V clamping.
Availability
P4SMA15 is available at Aetrix Electronics and suitable for switching mode power supplies, on-board DC/DC converters, and industrial lighting drivers requiring stable component supply with consistent parametric performance across production lots.
Supply support for P4SMA15 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs for industrial and automotive markets.
The P4SMA series belongs to TSC's surface-mount TVS portfolio engineered for high-reliability transient suppression in harsh environments, with emphasis on ISO 7637-2 compliance, MSL Level 1 handling, and automated assembly compatibility.
FAQ
What is the breakdown voltage range of the P4SMA15?
The P4SMA15 has a guaranteed breakdown voltage (VBR) range of 13.5 V to 16.5 V at 1.0 mA test current, measured per ANSI/IEEE C62.35. This range ensures robust activation threshold across process variation and temperature, allowing reliable clamping in 12 V nominal systems where transient margins must exceed 13.5 V to avoid nuisance triggering.
Is the P4SMA15 unidirectional or bidirectional?
The P4SMA15 is a unidirectional TVS diode, indicated by absence of "C" or "CA" suffix and cathode band marking. It conducts only during reverse-biased transients - i.e., when the cathode is at higher potential than the anode - and blocks up to 12.1 V in forward direction. Bidirectional variants require explicit part numbers like P4SMA15C.
What is the maximum clamping voltage of the P4SMA15 under surge conditions?
The P4SMA15 exhibits a maximum clamping voltage (VC) of 22.0 V at 19.0 A peak pulse current (10/1000 µs waveform). This value represents the upper limit of voltage seen by downstream components during worst-case surge events, directly informing system-level overvoltage immunity design for 12 V rails.
Does the P4SMA15 meet automotive transient standards?
Yes, the P4SMA15 meets ISO 7637-2 requirements for Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling), as confirmed in the official Taiwan Semiconductor datasheet Version S2102. Its 400 W rating and 22.0 V clamping enable direct use in automotive body control modules and infotainment power supplies.
What is the moisture sensitivity level (MSL) of the P4SMA15?
The P4SMA15 is rated MSL Level 1 per J-STD-020, meaning it has unlimited floor life and may be subjected to standard reflow soldering profiles without pre-baking. This simplifies manufacturing logistics and eliminates moisture-related popcorning risk during assembly - a critical advantage for high-throughput SMT lines.
P4SMA15 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AC, SMA
- Series:
- P4SMA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 12.1V
- Voltage - Breakdown (Min):
- 13.5V
- Voltage - Clamping (Max) @ Ipp:
- 22V
- Current - Peak Pulse (10/1000µs):
- 19A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA15 FAQ
1.How can I place an order for P4SMA15 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA15 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 P4SMA15 reliable?
The price and inventory of P4SMA15 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA15 is usually 5 days.
3.What payment methods are accepted for P4SMA15?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA15 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA15?
P4SMA15 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA15 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 P4SMA15?
For technical support, including P4SMA15 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA15 requirements.
6.How does Aetrix verify that P4SMA15 is sourced from the original manufacturer or authorized distributors?
All P4SMA15 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 P4SMA15 meets industry standards.
7.What is the process for return or replacement of P4SMA15?
All P4SMA15 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA15, 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 P4SMA15 part is unused and in its original packaging.
Return procedure for P4SMA15:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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