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Taiwan Semiconductor Corporation P4SMA11AH
- Part No.:
- P4SMA11AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA11AH.pdf
- Description:
- TVS DIODE 9.4VWM 15.6VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,671
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Product details
Overview
P4SMA11AH from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AC (SMA) package, rated for 400W peak pulse power, 10.5–11.6V breakdown voltage at 1mA, and 15.6V clamping voltage at 27A (10/1000μs waveform), used for overvoltage protection in DC/DC converters and automotive power supplies.
For engineers reviewing the P4SMA11AH datasheet, P4SMA11AH pinout, P4SMA11AH application, or P4SMA11AH equivalent, key selection criteria include clamping voltage margin vs. protected IC VDD, leakage current at operating bias, AEC-Q101 qualification status, and compliance with ISO 7637-2 Pulse 1/2a/2b/3a/3b waveforms.
Technical Context
The P4SMA11AH employs a glass-passivated silicon junction optimized for fast transient response (<1.0ps) and low leakage (<1μA at 9.4V). Its unidirectional configuration provides reverse-biased clamping only, with forward conduction limited to 3.5V at 25A surge.
Designed for automotive-grade reliability, it meets AEC-Q101 stress testing and ISO 7637-2 immunity requirements for load dump and switching transients. The device operates across –55°C to +150°C junction temperature range and features moisture sensitivity level 1 per J-STD-020.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR min/max | 10.5V / 11.6V at 1mA test current - defines minimum and maximum guaranteed breakdown threshold under standardized test conditions |
| VWM | 9.4V - maximum continuous reverse working voltage before significant leakage begins; sets upper limit for system DC bias |
| VC @ IPPM | 15.6V at 27A (10/1000μs) - clamping voltage during worst-case surge; determines max stress on downstream ICs |
| IR @ VWM | <1μA - ultra-low leakage ensures minimal power loss and signal integrity in high-impedance bias networks |
| PPPM | 400W - peak pulse power handling capability per single non-repetitive 10/1000μs transient event |
| TJ max | +150°C - maximum junction temperature rating enables use in under-hood automotive environments |
| Package | DO-214AC (SMA) - industry-standard surface-mount outline with 0.060g mass and matte tin-plated leads |
Pinout & Package
DO-214AC (SMA) package: molded plastic case with cathode band marking; polarity-sensitive unidirectional operation; terminals are matte tin-plated for J-STD-002 solderability and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path | Connects to lower-potential side of protected line; conducts up to 3.5V drop at 25A surge |
| Cathode | Clamping node | Connected to higher-potential rail (e.g., VIN); sinks surge current when reverse voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements including HTOL, TC, UHAST, and ESD |
| Glass passivated junction | Enhances long-term stability and reduces parameter drift under thermal cycling and humidity exposure |
| ISO 7637-2 compliance | Withstands Pulse 1 (inductive load disconnect), Pulse 2a/2b (switching transients), and Pulse 3a/3b (line impedance effects) |
| Fast response time | <1.0ps - enables clamping before sensitive logic or analog circuitry experiences overvoltage damage |
| Moisture sensitivity level 1 | No floor life limitation; safe for standard SMT reflow without baking preconditioning |
Applications
| Automotive Power Supply Protection | On-board DC/DC Converter Input |
|---|---|
Use Scenario: Protecting 12V battery-fed ECUs against load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between input rail and ground to clamp reverse surges above 9.4V. Use Value: Limits peak voltage to 15.6V during 27A ISO 7637-2 Pulse 5a events, safeguarding 16V-rated regulators and microcontrollers. | Use Scenario: Input-side surge suppression for buck converters powering ADAS sensors. IC Role / Device Role / Timing Role: Primary overvoltage clamp at converter VIN pin, absorbing energy from coupled noise on vehicle harnesses. Use Value: Withstands repetitive 400W pulses while maintaining sub-1μA leakage at nominal 9V input, preserving efficiency. |
| Industrial SMPS Input Stage | LED Driver Power Input |
Use Scenario: Front-end protection in DIN-rail mounted AC/DC adapters subject to lightning-induced surges. IC Role / Device Role / Timing Role: Secondary-level TVS after MOV stage, providing precise clamping where MOV tolerance is insufficient. Use Value: Delivers 15.6V clamping accuracy versus MOV's ±20% variation, enabling tighter design margins for downstream rectifiers. | Use Scenario: Overvoltage guard for constant-current LED drivers in streetlight systems exposed to grid switching transients. IC Role / Device Role / Timing Role: Reverse-biased clamp across driver input capacitor to prevent capacitor overvoltage failure. Use Value: 10.5–11.6V VBR window aligns with 12V nominal input, ensuring activation before 16V-rated electrolytics exceed rating. |
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 | 600W rating, DO-214AA (SMB) package, 12.2V VC @ 43.3A | Higher power handling but larger footprint; requires PCB area increase | Select when surge energy exceeds 400W or when SMB layout already exists |
| 1.5SMC11A | 1500W rating, DO-214AB (SMC) package, 18.2V VC @ 82.4A | Significantly higher clamping voltage; less suitable for 12V systems with tight voltage margins | Choose only if system can tolerate >18V transient excursion and needs higher single-pulse robustness |
Compared with SMBJ11A and 1.5SMC11A, the P4SMA11AH offers optimal balance of compact DO-214AC footprint, low 15.6V clamping, and AEC-Q101 qualification-making it preferred for space-constrained automotive and industrial 12V rail protection where precise voltage limiting is critical.
Availability
P4SMA11AH is available at Aetrix Electronics and suitable for automotive electronics, industrial power supplies, and LED lighting systems requiring stable component supply and AEC-Q101-compliant surge protection.
Supply support for P4SMA11AH 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 P4SMA11AH belongs to TSC's AEC-Q101-qualified P4SMAx(A)H series, engineered specifically for robust transient suppression in harsh automotive and industrial environments with strict ISO 7637-2 compliance requirements.
FAQ
What is the clamping voltage of the P4SMA11AH under standard surge conditions?
The P4SMA11AH has a maximum clamping voltage (VC) of 15.6V at 27A peak pulse current using the 10/1000μs waveform. This value is measured per ANSI/IEEE C62.35 and defines the highest voltage seen by downstream circuitry during a standardized transient event. Designers must ensure this clamping level remains below the absolute maximum ratings of protected components. The P4SMA11AH consistently achieves this performance across its full operating temperature range.
Is the P4SMA11AH suitable for bidirectional transient protection?
No, the P4SMA11AH is a unidirectional TVS diode and provides clamping only in reverse bias. For bidirectional protection, Taiwan Semiconductor offers the P4SMA11CAH variant with "CAH" suffix. Using the P4SMA11AH in bidirectional applications would leave positive-going transients unprotected. Always verify polarity marking (cathode band) during placement, as incorrect orientation renders the P4SMA11AH ineffective for its intended reverse-clamp function.
Does the P4SMA11AH meet automotive qualification standards?
Yes, the P4SMA11AH is AEC-Q101 qualified and tested for automotive-grade reliability, including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing. It also complies with ISO 7637-2 for electrical disturbances from conduction and coupling in road vehicles-specifically Pulses 1, 2a, 2b, 3a, and 3b. These qualifications make the P4SMA11AH appropriate for engine control units, body electronics, and ADAS modules where sustained reliability under thermal and electrical stress is mandatory.
What is the maximum leakage current specification for the P4SMA11AH at its working voltage?
The P4SMA11AH specifies a maximum reverse leakage current (IR) of 1μA at its working stand-off voltage (VWM) of 9.4V. This ultra-low leakage ensures minimal power loss in always-on circuits and avoids loading high-impedance sensing nodes. The value is guaranteed at 25°C and remains well below 10μA across the full –55°C to +150°C operating junction temperature range, supporting stable performance in under-hood automotive environments.
What package type and mounting method does the P4SMA11AH use?
The P4SMA11AH uses the DO-214AC (SMA) surface-mount package with matte tin-plated leads compliant with J-STD-002 solderability requirements. It is designed for automated pick-and-place assembly and reflow soldering. The package features a cathode band marking for polarity identification and weighs approximately 0.060g. Its compact dimensions enable high-density PCB layouts while maintaining thermal performance up to 150°C junction temperature.
P4SMA11AH 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA11AH FAQ
1.How can I place an order for P4SMA11AH through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA11AH 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 P4SMA11AH reliable?
The price and inventory of P4SMA11AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA11AH is usually 5 days.
3.What payment methods are accepted for P4SMA11AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA11AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA11AH?
P4SMA11AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA11AH 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 P4SMA11AH?
For technical support, including P4SMA11AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA11AH requirements.
6.How does Aetrix verify that P4SMA11AH is sourced from the original manufacturer or authorized distributors?
All P4SMA11AH 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 P4SMA11AH meets industry standards.
7.What is the process for return or replacement of P4SMA11AH?
All P4SMA11AH units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA11AH, 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 P4SMA11AH part is unused and in its original packaging.
Return procedure for P4SMA11AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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