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Taiwan Semiconductor Corporation P4SMA11H
- Part No.:
- P4SMA11H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA11H.pdf
- Description:
- 400W, 11V, 10%, UNIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:2,909
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Product details
Overview
P4SMA11H from Taiwan Semiconductor is a unidirectional 400W surface-mount transient voltage suppressor (TVS) diode with a working stand-off voltage of 8.92 V, breakdown voltage range 9.90–12.10 V at 1.0 mA test current, and clamping voltage of 16.2 V at 26 A peak impulse current. It protects DC power rails in automotive and industrial converters against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the P4SMA11H datasheet, P4SMA11H pinout, P4SMA11H application, or P4SMA11H equivalent, this device is selected for robust overvoltage protection in space-constrained SMA-packaged designs requiring AEC-Q101 qualification, <1 μA leakage at VWM, and sub-1 ps response time.
Technical Context
The P4SMA11H employs a glass-passivated silicon junction optimized for fast transient suppression in unidirectional configurations. Its clamping behavior is defined by a 10/1000 μs surge waveform, with peak pulse power rated at 400 W at TA = 25°C and derated linearly above that ambient temperature.
It operates across a junction temperature range of –55°C to +150°C, meets JESD201 Class 2 whisker resistance, and features matte tin-plated leads compliant with J-STD-002 solderability standards. Polarity is marked by a cathode band on the DO-214AC (SMA) package body.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 8.92 V - Maximum continuous reverse operating voltage before significant leakage begins |
| VBR min/max | 9.90–12.10 V @ 1.0 mA - Confirmed breakdown threshold ensures reliable turn-on during transients |
| VC @ IPPM | 16.2 V @ 26 A - Clamping voltage limits downstream IC stress during 10/1000 μs surges |
| IR @ VWM | <1 μA - Ultra-low leakage preserves battery life and signal integrity in low-power systems |
| PPPM | 400 W - Peak pulse power handling supports high-energy automotive load-dump events |
| TJ max | +150°C - Enables operation in under-hood and industrial environments without thermal derating penalties |
| Package | DO-214AC (SMA) - Standardized SMD footprint compatible with automated placement and reflow |
Pinout & Package
DO-214AC (SMA) surface-mount package: cathode-marked, single-diode configuration, 0.060 g typical weight, UL 94V-0 molding compound, matte tin-plated leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input side for unidirectional clamping | Connected to protected line; conducts surge current toward cathode when VAK exceeds VBR |
| Cathode | Output/ground reference side | Marked by band; tied to system ground or lower-potential rail to complete clamping path |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress-test requirements including temperature cycling, HTRB, and ESD |
| Glass passivated junction | Enhances long-term reliability and moisture resistance versus epoxy-passivated alternatives |
| Fast response time | <1.0 ps - Limits voltage overshoot before protection engages, critical for sensitive microcontrollers |
| ISO 7637-2 compliance | Withstands Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling) |
| Moisture sensitivity level 1 | No floor-life limitation or bake requirement prior to reflow - simplifies manufacturing logistics |
Applications
| Switching Mode Power Supply (SMPS) | On-board DC/DC Converter |
|---|---|
Use Scenario: Input stage of 12 V automotive SMPS subjected to load-dump transients up to 120 V. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between input rail and chassis ground. Use Value: Limits transient voltage to ≤16.2 V, preventing damage to upstream rectifier and downstream PWM controller. | Use Scenario: 5 V output rail of isolated DC/DC module powering infotainment MCU. IC Role / Device Role / Timing Role: Secondary-side transient suppressor guarding low-voltage logic supply. Use Value: Sub-1 μA leakage avoids quiescent current penalty; 400 W rating handles coupled noise from adjacent switching stages. |
| Lighting Application | Adapters |
Use Scenario: LED driver board in commercial lighting fixture exposed to lightning-induced surges on AC mains input. IC Role / Device Role / Timing Role: Primary-side TVS protecting bridge rectifier and bulk capacitor from differential-mode spikes. Use Value: 16.2 V clamping ensures MOSFET gate drivers remain within safe operating area during surge events. | Use Scenario: Universal AC/DC adapter for consumer electronics experiencing repetitive line-switching transients. IC Role / Device Role / Timing Role: Secondary-side transient suppressor on regulated 12 V output bus. Use Value: DO-214AC package enables compact layout; AEC-Q101 qualification adds margin for extended product lifetime. |
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 | 600 W rating, SMB package (larger footprint), higher IPPM (33.5 A), same VC (18.2 V) | Better suited for higher-energy surges; requires PCB area increase and layout revision | Select when system-level testing shows 400 W insufficient; verify thermal relief and pad geometry compatibility |
| 1.5SMC11A | 1500 W rating, SMC package (much larger), VC = 18.2 V, VWM = 8.55 V | Designed for industrial-grade surge immunity; incompatible with space-constrained SMA layouts | Choose only if legacy design uses SMC footprint or if IEC 61000-4-5 Level 4 compliance is required |
Compared with SMBJ11A and 1.5SMC11A, the P4SMA11H delivers optimal balance of compact DO-214AC packaging, AEC-Q101 qualification, and 400 W surge capability-making it ideal for automotive and high-reliability embedded power rails where board space and qualification rigor are prioritized over maximum energy absorption.
Availability
P4SMA11H is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial DC/DC converters, and LED lighting drivers requiring stable component supply across multi-year production cycles.
Supply support for P4SMA11H 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, and rectifiers with global distribution and AEC-Q101 validation capabilities.
The P4SMA series is part of TSC's automotive-grade transient suppression portfolio, engineered specifically for ISO 7637-2 compliance and high-volume surface-mount assembly in harsh-environment electronics.
FAQ
What is the maximum clamping voltage of the P4SMA11H under standard test conditions?
The P4SMA11H has a maximum clamping voltage (VC) of 16.2 V when subjected to a 10/1000 μs surge waveform at 26 A peak impulse current. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during transient events. The P4SMA11H maintains this clamping performance across its full operating temperature range of –55°C to +150°C.
Is the P4SMA11H suitable for bidirectional transient suppression?
No, the P4SMA11H is a unidirectional TVS diode intended for single-polarity clamping applications. For bidirectional use, Taiwan Semiconductor specifies variants with "CH" or "CAH" suffixes (e.g., P4SMA11CH). The P4SMA11H features a cathode band marking and must be oriented with anode toward the protected line and cathode toward ground to function correctly.
Does the P4SMA11H meet automotive qualification standards?
Yes, the P4SMA11H is AEC-Q101 qualified, confirming its reliability for automotive electronic modules. It passes stress tests including high-temperature reverse bias (HTRB), temperature cycling, and mechanical shock. The device also complies with ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b, making it suitable for engine control units, body electronics, and ADAS power supplies.
What is the leakage current specification for the P4SMA11H at its working stand-off voltage?
The P4SMA11H exhibits a maximum reverse leakage current (IR) of 1 μA when biased at its working stand-off voltage (VWM) of 8.92 V. This ultra-low leakage is confirmed at TA = 25°C and supports energy-sensitive applications such as always-on automotive modules and battery-backed systems where standby current must be minimized.
What package type does the P4SMA11H use, and is it compatible with standard SMT processes?
The P4SMA11H uses the DO-214AC (SMA) surface-mount package, with matte tin-plated leads compliant with J-STD-002 solderability requirements. Its footprint is compatible with standard reflow profiles and automated pick-and-place equipment. The device is rated MSL Level 1, meaning it can be stored indefinitely at ambient conditions without baking prior to assembly.
P4SMA11H 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):
- 8.92V
- Voltage - Breakdown (Min):
- 9.9V
- Voltage - Clamping (Max) @ Ipp:
- 16.2V
- Current - Peak Pulse (10/1000µs):
- 26A
- 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)
P4SMA11H FAQ
1.How can I place an order for P4SMA11H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA11H 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 P4SMA11H reliable?
The price and inventory of P4SMA11H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA11H is usually 5 days.
3.What payment methods are accepted for P4SMA11H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA11H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA11H?
P4SMA11H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA11H 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 P4SMA11H?
For technical support, including P4SMA11H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA11H requirements.
6.How does Aetrix verify that P4SMA11H is sourced from the original manufacturer or authorized distributors?
All P4SMA11H 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 P4SMA11H meets industry standards.
7.What is the process for return or replacement of P4SMA11H?
All P4SMA11H units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA11H, 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 P4SMA11H part is unused and in its original packaging.
Return procedure for P4SMA11H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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