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Taiwan Semiconductor Corporation P4KE9.1
- Part No.:
- P4KE9.1
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE9.1.pdf
- Description:
- 400W, 9.1V, UNIDIRECTIONAL, TVS
- Quantity:
- Payment:
- Shipping:
Inventory:9,848
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Product details
Overview
P4KE9.1 from Taiwan Semiconductor is a unidirectional 400W transient voltage suppressor (TVS) diode designed for primary-side overvoltage protection in DC power rails and signal lines. It features a nominal breakdown voltage of 9.1V, clamps transients to ≤13.8V at 30A peak pulse current, and maintains ≤50μA reverse leakage at its 7.37V working stand-off voltage - deployed in automotive body control modules, industrial sensor interfaces, and AC/DC adapter input stages.
For engineers reviewing the P4KE9.1 datasheet, P4KE9.1 pinout, P4KE9.1 application, or P4KE9.1 equivalent, key selection criteria include its DO-41 package compatibility with high-density PCB layouts, AEC-Q101 qualification for automotive environments, 1.0ps response time to ESD events, and precise 8.19–10.00V VBR tolerance ensuring reliable turn-on before downstream IC damage.
Technical Context
The P4KE9.1 operates as a silicon avalanche diode with unidirectional polarity, triggered when reverse voltage exceeds its specified breakdown range (8.19–10.00V at 1mA test current). Its low dynamic impedance enables stable clamping under 10/1000μs surge waveforms up to 400W, while junction temperature remains within -55°C to +175°C operating limits.
It exhibits a positive temperature coefficient of VBR (0.068%/°C), ensuring predictable voltage drift across thermal gradients. With <1.0ps response from 0V to VBR, it suppresses fast-rising ESD and EFT transients before sensitive logic or analog circuitry sustains damage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR @ IT=1mA | 8.19–10.00V: Ensures consistent avalanche initiation across production units without premature conduction during normal operation. |
| VWM | 7.37V: Maximum continuous reverse voltage before leakage exceeds 50μA - sets safe margin below VBR for 12V rail protection. |
| VC @ IPPM=30A | ≤13.8V: Clamped voltage during 10/1000μs surge - protects 5V/3.3V logic ICs connected downstream. |
| PPK | 400W: Peak pulse power handling capability - withstands IEC 61000-4-5 Level 4 surges (4kV/2Ω) on 12V lines. |
| IR @ VWM | ≤50μA: Low reverse leakage preserves battery life in always-on automotive modules and avoids false triggering. |
| TJ max | +175°C: Enables placement near heat-generating components like MOSFETs or bridge rectifiers without derating concerns. |
| Package | DO-204AL (DO-41): Industry-standard axial leaded package compatible with automated insertion and wave soldering. |
Pinout & Package
DO-204AL (DO-41) package with axial leads: cathode indicated by band marking; anode and cathode terminals support through-hole mounting on standard PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; grounded reference in unidirectional TVS configuration | Connected to system ground or low-impedance return path to sink surge current safely. |
| Cathode | Protected line connection; reverse-biased terminal during transient suppression | Connected to the line being protected (e.g., 12V supply rail); conducts avalanche current to ground when VIN > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive under-hood applications including engine control units and lighting drivers. |
| 400W peak pulse rating | Handles IEC 61000-4-5 surge tests up to 4kV open-circuit voltage without degradation. |
| 1.0ps response time | Activates faster than most microcontroller I/O pins can be damaged by ESD events. |
| UL 94V-0 molding compound | Self-extinguishing encapsulation meets flammability requirements for enclosed industrial equipment. |
| RoHS & halogen-free | Complies with IPC-J-STD-709D material restrictions for green electronics manufacturing. |
Applications
| Automotive Body Control Module | Industrial Sensor Interface |
|---|---|
Use Scenario: Protecting LIN bus transceivers and microcontroller GPIOs from load dump and jump-start transients in vehicle door modules. IC Role / Device Role / Timing Role: Unidirectional TVS placed between LIN line and ground to clamp spikes above 13.8V while remaining inert below 7.37V. Use Value: Prevents latch-up or gate oxide rupture in 3.3V transceivers during 12V system surges up to 400W. |
Use Scenario: Safeguarding 4–20mA current loop receivers against induced surges from nearby motor drives in factory automation panels. IC Role / Device Role / Timing Role: Standoff protection device shunting transients away from precision op-amps and ADC front-ends. Use Value: Maintains signal integrity by limiting clamped voltage to ≤13.8V, avoiding saturation of rail-to-rail input stages. |
| AC/DC Adapter Input Stage | LED Driver Power Supply |
Use Scenario: Suppressing line-to-ground surges entering offline SMPS inputs after bridge rectification in Class II adapters. IC Role / Device Role / Timing Role: Primary-side transient clamp across bulk capacitor terminals to prevent overvoltage stress on PWM controller. Use Value: Absorbs 400W pulses without thermal runaway, enabling compact designs with minimal heatsinking. |
Use Scenario: Protecting constant-current LED driver ICs from inductive kickback when switching high-power strings in streetlight systems. IC Role / Device Role / Timing Role: Fast-acting voltage clamp across MOSFET drain-source to limit dv/dt-induced gate stress. Use Value: Reduces risk of MOSFET avalanche failure by clamping transients to ≤13.8V within 1.0ps of onset. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ9.0A | Surface-mount SMB package; 9.0V nominal VBR; 600W peak power; 10/1000μs waveform | Requires PCB re-layout for SMD footprint; higher power rating suits higher-energy surges | Select when board space is constrained and surge energy exceeds 400W requirements. |
| 1.5KE9.1 | Same DO-41 package; 1500W peak power; higher clamping voltage (14.5V) at 123A IPPM | Overkill for low-energy ESD; larger physical size increases parasitic inductance in high-frequency paths | Choose only when legacy 1.5KE design reuse is required and 1500W surge immunity is mandated. |
Compared with SMBJ9.0A and 1.5KE9.1, the P4KE9.1 offers optimal balance of axial-leaded manufacturability, AEC-Q101 compliance, and 400W surge handling - making it ideal for cost-sensitive automotive and industrial designs where exact DO-41 fit and moderate energy absorption are prioritized.
Availability
P4KE9.1 is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, AC/DC adapter input protection, and LED driver power supplies requiring stable component supply and long-term lifecycle assurance.
Supply support for P4KE9.1 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 P4KE series was developed specifically for robust transient suppression in automotive and industrial power systems, emphasizing reliability under thermal stress, fast response to ESD/EFT, and compatibility with high-volume assembly processes.
FAQ
What is the maximum clamping voltage of the P4KE9.1 under surge conditions?
The P4KE9.1 clamps to a maximum of 13.8V when subjected to a 30A peak pulse current with a 10/1000μs waveform. This value is measured per ANSI/IEEE C62.35 standards and ensures downstream 5V or 3.3V ICs remain within absolute maximum ratings during transient events. The P4KE9.1 achieves this performance while maintaining low dynamic impedance and repeatable behavior across temperature and lifetime.
Is the P4KE9.1 suitable for automotive applications?
Yes, the P4KE9.1 is AEC-Q101 qualified and rated for operation from -55°C to +175°C, making it suitable for under-hood and cabin-mounted automotive systems. Its DO-41 package supports mechanical robustness in vibration-prone environments, and its 400W surge rating aligns with ISO 7637-2 Pulse 5a load-dump protection requirements. The P4KE9.1 is commonly used in body control modules, lighting drivers, and infotainment power supplies.
How does the P4KE9.1 differ from the P4KE9.1A variant?
The P4KE9.1A has tighter VBR tolerance (8.65–9.55V vs. 8.19–10.00V for P4KE9.1) and slightly lower clamping voltage (13.4V vs. 13.8V at 31A). Both share identical package, power rating, and temperature range. The P4KE9.1A is preferred in precision voltage-clamp applications where tighter VBR distribution improves consistency across production batches, while the P4KE9.1 offers broader tolerance for cost-sensitive general-purpose use.
What is the reverse leakage current specification for the P4KE9.1?
The P4KE9.1 exhibits ≤50μA reverse leakage current at its 7.37V working stand-off voltage (VWM) and 25°C ambient temperature. This low leakage minimizes standby power loss in battery-powered systems and avoids false triggering in high-impedance sensing circuits. Leakage remains within specification across the full -55°C to +125°C operating range, verified per JEDEC JESD22-A114.
Can the P4KE9.1 be used in bidirectional configurations?
No - the P4KE9.1 is a unidirectional TVS diode intended for DC line-to-ground protection only. Bidirectional operation requires part numbers suffixed with "C" or "CA", such as P4KE9.1C. Using the P4KE9.1 in reverse-biased AC applications risks permanent failure due to forward conduction during negative half-cycles. Always verify polarity marking (cathode band) and match device type to signal topology before deploying the P4KE9.1.
P4KE9.1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-204AL, DO-41, Axial
- Series:
- P4KE
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 7.37V
- Voltage - Breakdown (Min):
- 8.19V
- Voltage - Clamping (Max) @ Ipp:
- 13.8V
- Current - Peak Pulse (10/1000µs):
- 30A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
P4KE9.1 FAQ
1.How can I place an order for P4KE9.1 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE9.1 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 P4KE9.1 reliable?
The price and inventory of P4KE9.1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE9.1 is usually 5 days.
3.What payment methods are accepted for P4KE9.1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE9.1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE9.1?
P4KE9.1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE9.1 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 P4KE9.1?
For technical support, including P4KE9.1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE9.1 requirements.
6.How does Aetrix verify that P4KE9.1 is sourced from the original manufacturer or authorized distributors?
All P4KE9.1 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 P4KE9.1 meets industry standards.
7.What is the process for return or replacement of P4KE9.1?
All P4KE9.1 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE9.1, 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 P4KE9.1 part is unused and in its original packaging.
Return procedure for P4KE9.1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4KE9.1 Tags
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