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Taiwan Semiconductor Corporation P4SMA11A
- Part No.:
- P4SMA11A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA11A.pdf
- Description:
- TVS DIODE 9.4VWM 15.6VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,449
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Product details
Overview
P4SMA11A from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for primary overvoltage protection in DC power rails. It features a 9.4 V working stand-off voltage, 10.5–11.6 V breakdown voltage at 1 mA, 15.6 V maximum clamping voltage at 27 A (10/1000 µs), and 400 W peak pulse power rating - deployed in switching mode power supplies and on-board DC/DC converters.
For engineers reviewing the P4SMA11A datasheet, P4SMA11A pinout, P4SMA11A application, or P4SMA11A equivalent, key selection criteria include clamping performance under 10/1000 µs surge, low leakage (<1 µA at 9.4 V), DO-214AC package compatibility, and compliance with ISO 7637-2 Pulse 1/2a/2b/3a/3b for automotive electronics robustness.
Technical Context
The P4SMA11A operates as a unidirectional avalanche diode with glass-passivated junction, enabling fast response (<1.0 ps) to transient overvoltages while maintaining low capacitance and stable breakdown characteristics. Its thermal design supports continuous operation from –55 °C to +150 °C junction temperature, with derating above 25 °C ambient per published pulse derating curve.
It delivers precise voltage clamping during standardized 10/1000 µs surge events, with a maximum clamping voltage of 15.6 V at 27 A peak impulse current. The device meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability requirements for high-reliability PCB mounting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 9.4 V - Maximum continuous reverse operating voltage before significant leakage begins; sets safe DC rail margin for 12 V systems. |
| VBR min/max | 10.5–11.6 V at IT = 1 mA - Confirmed breakdown range ensures predictable turn-on during transients without premature conduction. |
| VC @ IPPM | 15.6 V at 27 A (10/1000 µs) - Clamping voltage defines worst-case voltage seen by protected ICs during surge events. |
| PPPM | 400 W - Peak pulse power handling capacity determines survivability against ISO 7637-2 Pulse 2b (load dump) and similar surges. |
| IR @ VWM | <1 µA - Ultra-low reverse leakage minimizes standby power loss and avoids false triggering in high-impedance circuits. |
| Package | DO-214AC (SMA) - Standardized surface-mount outline with cathode band marking; compatible with automated pick-and-place and reflow. |
Pinout & Package
DO-214AC (SMA) package: molded plastic case with matte tin-plated leads, polarity indicated by cathode band; weight ≈ 0.060 g; moisture sensitivity level 1 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Surge return path | Connected to system ground or low-side reference; completes clamping loop during reverse-biased transient suppression. |
| Cathode | Protected line connection | Connected to the rail being protected (e.g., +12 V input); conducts avalanche current when VIN exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable, repeatable breakdown voltage and long-term reliability under repeated surge stress without parameter drift. |
| Fast response time <1.0 ps | Enables effective suppression of nanosecond-scale ESD and fast-rising transients before downstream components experience overstress. |
| ISO 7637-2 compliance | Validated for automotive-grade immunity to load dump (Pulse 2b), supply interruption (Pulse 3b), and coupled noise (Pulse 1/2a). |
| RoHS & halogen-free | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for environmentally compliant manufacturing and end-of-life processing. |
Applications
| Switching Mode Power Supply (SMPS) | On-board DC/DC Converter |
|---|---|
Use Scenario: Input stage protection against line surges and coupling transients in AC/DC adapters and isolated DC/DC modules. IC Role / Device Role / Timing Role: Unidirectional TVS placed between input rail and ground to clamp positive-going transients before they reach controller ICs or MOSFETs. Use Value: Limits peak voltage to ≤15.6 V during 27 A 10/1000 µs surges, preserving gate oxide integrity and preventing latch-up in PWM controllers. | Use Scenario: Protection of intermediate bus rails (e.g., 12 V → 3.3 V) in embedded computing or industrial PLCs. IC Role / Device Role / Timing Role: Standoff-rated clamping device on secondary-side input, absorbing coupled noise from switching nodes and external cable transients. Use Value: Maintains <1 µA leakage at 9.4 V, avoiding loading of feedback networks while delivering 400 W surge dissipation capability. |
| Lighting Application | Automotive Body Control Module |
Use Scenario: Overvoltage protection for LED driver inputs exposed to hot-swap or inductive kickback in commercial lighting fixtures. IC Role / Device Role / Timing Role: Primary surge shunt on constant-current driver input, activated only during fault conditions to divert energy away from driver ICs. Use Value: Clamps to 15.6 V within <1 ps, preventing damage to integrated MOSFETs or current-sense amplifiers during lamp short-circuit events. | Use Scenario: Input rail protection in BCMs subjected to ISO 7637-2 Pulse 2b (load dump) and Pulse 3b (switching transients). IC Role / Device Role / Timing Role: Unidirectional TVS on 12 V battery-supplied microcontroller power domain, referenced to chassis ground. Use Value: Certified compliance with ISO 7637-2 ensures functional safety during vehicle-level EMC testing without redesign. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ11A (Bourns) | Same DO-214AA package; 11.1 V VWM, 12.3–13.6 V VBR, 18.2 V VC @ 22 A - higher clamping voltage, lower surge current rating. | Less effective clamping headroom for 12 V systems; requires verification of protected IC's absolute max rating vs. 18.2 V. | Select when footprint compatibility with SMBJ-series boards is required and clamping margin allows. |
| 1.5SMC11A (ON Semiconductor) | DO-214AB (SMC) package; 9.4 V VWM, 10.5–11.6 V VBR, 17.5 V VC @ 23 A - larger package, higher thermal mass, but 1.9 V higher clamping than P4SMA11A. | Not drop-in due to larger SMC footprint; suited for higher-power or thermally constrained designs where board space permits. | Choose for enhanced thermal endurance in high-temperature environments (>105 °C ambient), accepting layout change. |
Compared with SMBJ11A and 1.5SMC11A, the P4SMA11A offers the lowest clamping voltage (15.6 V) in the DO-214AC form factor, making it optimal for tight-margin 12 V rail protection where minimizing let-through voltage is critical.
Availability
P4SMA11A is available at Aetrix Electronics and suitable for switching mode power supplies, on-board DC/DC converters, and automotive body control modules requiring stable component supply and full traceability.
Supply support for P4SMA11A 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 Company (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 specifically for high-reliability transient suppression in space-constrained, high-volume applications such as power adapters and automotive ECUs.
FAQ
What is the maximum clamping voltage of the P4SMA11A under standard surge conditions?
The P4SMA11A has a maximum clamping voltage (VC) of 15.6 V when subjected to a 10/1000 µs waveform at its rated peak pulse current of 27 A. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during transient events - critical for ensuring downstream ICs remain within their absolute maximum ratings.
Is the P4SMA11A suitable for bidirectional transient protection?
No, the P4SMA11A is a unidirectional TVS diode intended for DC rail protection with defined anode/cathode polarity. For bidirectional applications, Taiwan Semiconductor specifies the P4SMA11CA variant (with 'C' or 'CA' suffix), which provides symmetrical clamping in both polarities and is explicitly rated for use in AC-coupled or floating signal lines.
Does the P4SMA11A meet automotive EMC standards?
Yes, the P4SMA11A meets ISO 7637-2 requirements for Pulse 1 (inductive switch-off), Pulse 2a/2b (battery disconnection and load dump), and Pulse 3a/3b (capacitive coupling and supply interruption). This certification is documented in Taiwan Semiconductor's official datasheet Version S2102 and validates its use in automotive body electronics and infotainment power domains.
What is the reverse leakage current specification for the P4SMA11A at its working voltage?
The P4SMA11A exhibits a maximum reverse leakage current (IR) of 1 µA when biased at its working stand-off voltage (VWM) of 9.4 V. This ultra-low leakage ensures minimal power loss in always-on circuits and prevents interference with high-impedance sensing or feedback paths commonly found in precision power management systems using the P4SMA11A.
What package type and mounting compatibility does the P4SMA11A support?
The P4SMA11A uses the DO-214AC (SMA) surface-mount package with matte tin-plated leads compliant with J-STD-002 solderability standards. It supports standard reflow profiles and is compatible with automated placement equipment - confirmed by Taiwan Semiconductor's "ideal for automated placement" feature statement and JEDEC-compliant mechanical dimensions in the datasheet.
P4SMA11A 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):
- 9.4V
- Voltage - Breakdown (Min):
- 10.5V
- Voltage - Clamping (Max) @ Ipp:
- 15.6V
- Current - Peak Pulse (10/1000µs):
- 27A
- 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)
P4SMA11A FAQ
1.How can I place an order for P4SMA11A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA11A 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 P4SMA11A reliable?
The price and inventory of P4SMA11A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA11A is usually 5 days.
3.What payment methods are accepted for P4SMA11A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA11A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA11A?
P4SMA11A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA11A 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 P4SMA11A?
For technical support, including P4SMA11A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA11A requirements.
6.How does Aetrix verify that P4SMA11A is sourced from the original manufacturer or authorized distributors?
All P4SMA11A 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 P4SMA11A meets industry standards.
7.What is the process for return or replacement of P4SMA11A?
All P4SMA11A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA11A, 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 P4SMA11A part is unused and in its original packaging.
Return procedure for P4SMA11A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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