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Taiwan Semiconductor Corporation P4SMA15CA
- Part No.:
- P4SMA15CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA15CA.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,500
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Product details
Overview
P4SMA15CA from Taiwan Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in DC power rails and signal lines. It features a 14.3–15.8 V breakdown voltage (VBR), 12.8 V working stand-off voltage (VWM), 21.2 V maximum clamping voltage (VC) at 20 A peak pulse current, and 400 W peak pulse power rating under 10/1000 µs waveform - deployed in switching mode power supplies and on-board DC/DC converters.
For engineers reviewing the P4SMA15CA datasheet, P4SMA15CA pinout, P4SMA15CA application, or P4SMA15CA equivalent, key selection criteria include bidirectional clamping capability, sub-1 ps response time, <1 µA reverse leakage at VWM, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, and DO-214AC (SMA) package compatibility with automated SMT assembly.
Technical Context
The P4SMA15CA employs a glass-passivated silicon junction optimized for fast transient suppression in automotive and industrial environments. Its bidirectional configuration enables symmetric clamping in both polarities without external polarity management, supporting unidirectional or bidirectional signal/power line protection without circuit redesign.
It operates across –55 °C to +150 °C junction temperature range and meets JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1 requirements. The device sustains 40 A non-repetitive forward surge current (IFSM) and maintains clamping performance under repetitive transients per Fig.2 derating curves.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR min/max | 14.3 V / 15.8 V at 1.0 mA test current - defines reliable conduction onset threshold for overvoltage events |
| VWM | 12.8 V - maximum continuous DC or RMS voltage the device blocks without significant leakage |
| VC @ IPPM | 21.2 V at 20 A (10/1000 µs) - limits downstream voltage stress during surge conditions |
| PPPM | 400 W peak pulse power - supports high-energy transient absorption per ISO 7637-2 Pulse 5a |
| IR @ VWM | <1 µA - ensures minimal standby power loss and signal integrity in low-current circuits |
| Response time | <1.0 ps - enables effective suppression of ESD and fast-rising electrical fast transients (EFT) |
| TJ max | +150 °C - allows operation in under-hood automotive or high-temperature industrial enclosures |
Pinout & Package
Package: DO-214AC (SMA), surface-mount, bi-directional, cathode band not applicable (bidirectional symmetry). Matte tin-plated leads, UL 94V-0 molding compound, 0.060 g typical weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional transient clamp node | Either terminal serves as input/output - no polarity dependency; connects across protected line and ground or between differential lines |
| Case | Non-electrical mechanical interface | DO-214AC body provides thermal path and mechanical anchoring; no internal connection to die |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enhances long-term reliability and moisture resistance in humid or condensing environments |
| ISO 7637-2 compliance (Pulse 1/2a/2b/3a/3b) | Validated for automotive load-dump and supply-line transient immunity without external filtering |
| Moisture Sensitivity Level 1 | Enables standard SMT reflow without baking or dry-pack handling |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU Directive 2011/65/EU for environmentally constrained applications |
| Fast response & low clamping ratio | VC/VBR ≈ 1.36 - minimizes overvoltage overshoot during fast transients |
Applications
| Switching Mode Power Supply (SMPS) | Automotive On-Board DC/DC Converter |
|---|---|
Use Scenario: Protection of primary-side MOSFET gate drivers and secondary-side rectifier outputs against switching-induced voltage spikes and coupling noise. IC Role / Device Role / Timing Role: Bidirectional TVS placed across input bus or output rail to clamp transients before they reach control ICs or capacitors. Use Value: Prevents premature failure of PWM controllers and synchronous rectifiers by limiting VDS and VOUT excursions to ≤21.2 V during 400 W surges. |
Use Scenario: Safeguarding 12 V-to-5 V/3.3 V DC/DC modules in vehicle infotainment and ADAS ECUs exposed to battery line transients. IC Role / Device Role / Timing Role: Standoff-rated TVS installed at module input to absorb ISO 7637-2 Pulse 5a (load dump) and Pulse 1 (inductive switch-off). Use Value: Maintains system uptime by preventing latch-up or burnout in buck controller ICs during 100 V/40 ms load-dump events. |
| LED Driver Power Input | Industrial Sensor Signal Line |
Use Scenario: Input-stage protection for constant-current LED drivers in streetlight and signage applications subject to lightning-induced surges. IC Role / Device Role / Timing Role: TVS connected between LED driver VIN and GND to shunt induced energy away from upstream bridge rectifier and bulk capacitor. Use Value: Extends driver lifetime by limiting peak input voltage to 21.2 V despite 1 kV/0.5 µs common-mode transients on AC mains input. |
Use Scenario: Differential or single-ended protection of 4–20 mA or RS-485 sensor interfaces in factory automation systems. IC Role / Device Role / Timing Role: Bidirectional TVS placed across signal pair (e.g., A/B lines) or signal-to-ground to suppress ESD and EFT per IEC 61000-4-2/4-4. Use Value: Preserves analog accuracy and digital integrity by clamping transients before they distort sensor output or corrupt UART/Modbus frames. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15CA (Bourns) | Same DO-214AA package; 400 W rating; VBR = 16.7–18.5 V; VC = 24.4 V @ 16.3 A | Higher clamping voltage and lower IPPM; suited for less sensitive loads with higher margin | Select when board space permits larger SMB footprint and system tolerates ~15% higher clamping voltage |
| 1.5KE15CA (ON Semiconductor) | Through-hole DO-15 package; same VBR/VC specs; 400 W rating; higher thermal mass but incompatible with SMT | Not suitable for automated assembly; used where manual repair or high-reliability through-hole mounting is required | Choose only for legacy through-hole designs or prototyping where rework accessibility outweighs SMT efficiency |
Compared with P4SMA15CA, SMBJ15CA offers identical power rating but requires larger PCB area and delivers weaker clamping performance, while 1.5KE15CA provides equivalent electrical protection but eliminates SMT compatibility - making P4SMA15CA optimal for space-constrained, high-volume automotive and industrial SMT deployments.
Availability
P4SMA15CA is available at Aetrix Electronics and suitable for switching mode power supplies, automotive DC/DC converters, and industrial sensor interfaces requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for P4SMA15CA 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 automotive, industrial, and consumer markets.
The P4SMA15CA belongs to TSC's P4SMAx(A) family of surface-mount TVS diodes engineered specifically for high-reliability transient suppression in automotive electronics and ruggedized power conversion systems.
FAQ
What is the polarity configuration of the P4SMA15CA?
The P4SMA15CA is a bidirectional TVS diode, meaning it functions identically in both forward and reverse bias directions. Unlike unidirectional variants (e.g., P4SMA15A), it has no cathode marking and provides symmetrical clamping - ideal for protecting AC-coupled signals or differential buses where polarity reversal may occur. This behavior is confirmed in the "Devices for Bipolar Applications" section of the datasheet.
Does the P4SMA15CA meet automotive transient immunity standards?
Yes, the P4SMA15CA meets ISO 7637-2 requirements for Pulse 1 (inductive load disconnect), Pulse 2a/2b (battery line interruption), and Pulse 3a/3b (switching noise), as explicitly stated in its FEATURES list. Its 400 W peak pulse power and 21.2 V clamping voltage at 20 A enable direct compliance without additional filtering components in 12 V automotive subsystems.
What is the maximum operating temperature for the P4SMA15CA?
The P4SMA15CA has a specified operating junction temperature range of –55 °C to +150 °C, verified in the ABSOLUTE MAXIMUM RATINGS table. This allows deployment in under-hood automotive modules, industrial motor drives, and outdoor lighting systems where ambient temperatures exceed 105 °C - provided PCB thermal design maintains TJ ≤ 150 °C under worst-case surge duty cycles.
How does the P4SMA15CA differ from the P4SMA15A?
The P4SMA15CA is bidirectional, whereas the P4SMA15A is unidirectional. Their VBR ranges differ slightly (P4SMA15CA: 14.3–15.8 V; P4SMA15A: 13.5–16.5 V), and P4SMA15CA exhibits symmetric I-V characteristics in both directions - critical for protecting floating or AC-biased nodes. The "CA" suffix explicitly denotes bipolar functionality per TSC's ordering convention.
Is the P4SMA15CA compatible with lead-free reflow soldering processes?
Yes, the P4SMA15CA uses matte tin-plated leads compliant with J-STD-002 solderability standards and is rated for moisture sensitivity level 1 (MSL-1), permitting exposure to ambient conditions indefinitely without baking. It supports standard lead-free reflow profiles up to 260 °C peak temperature, as validated by TSC's qualification testing and JEDEC J-STD-020 compliance.
P4SMA15CA 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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 12.8V
- Voltage - Breakdown (Min):
- 14.3V
- Voltage - Clamping (Max) @ Ipp:
- 21.2V
- Current - Peak Pulse (10/1000µs):
- 20A
- 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)
P4SMA15CA FAQ
1.How can I place an order for P4SMA15CA through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA15CA 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 P4SMA15CA reliable?
The price and inventory of P4SMA15CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA15CA is usually 5 days.
3.What payment methods are accepted for P4SMA15CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA15CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA15CA?
P4SMA15CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA15CA 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 P4SMA15CA?
For technical support, including P4SMA15CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA15CA requirements.
6.How does Aetrix verify that P4SMA15CA is sourced from the original manufacturer or authorized distributors?
All P4SMA15CA 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 P4SMA15CA meets industry standards.
7.What is the process for return or replacement of P4SMA15CA?
All P4SMA15CA units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA15CA, 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 P4SMA15CA part is unused and in its original packaging.
Return procedure for P4SMA15CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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