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Taiwan Semiconductor Corporation P4KE9.1H
- Part No.:
- P4KE9.1H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE9.1H.pdf
- Description:
- 400W, 9.1V, UNIDIRECTIONAL, TVS
- Quantity:
- Payment:
- Shipping:
Inventory:3,317
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Product details
Overview
P4KE9.1H 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, working stand-off voltage of 7.37V, clamping voltage of 13.8V at 30A peak pulse current, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the P4KE9.1H datasheet, P4KE9.1H pinout, P4KE9.1H application, or P4KE9.1H equivalent, this device is selected for robust ESD and lightning surge immunity in automotive body electronics, industrial sensor interfaces, and LED driver input stages where low clamping voltage and sub-nanosecond response are critical.
Technical Context
The P4KE9.1H operates as a unidirectional avalanche diode with a 10/1000μs waveform-rated 400W peak pulse power capability. Its breakdown voltage is specified at 8.19–10.00V with 1mA test current, and it maintains <1μA reverse leakage at 7.37V working voltage.
Thermal performance is defined by a maximum junction temperature of +175°C and a derated steady-state power dissipation of 1W at 75°C lead temperature. The device exhibits a voltage temperature coefficient of +0.068%/°C, indicating predictable VBR drift across operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.37 V - Maximum continuous DC or RMS voltage the device blocks without significant leakage |
| VBR @ IT=1mA | 8.19–10.00 V - Confirmed avalanche onset range; ensures reliable triggering before downstream IC damage |
| VC @ IPPM=30A | 13.8 V - Clamped voltage during 400W transient; limits stress on protected 5–12V logic or analog circuits |
| IPPM | 30 A - Peak pulse current handling at 10/1000μs waveform; supports IEC 61000-4-5 Level 4 surges |
| Response Time | <1.0 ps - Sub-picosecond turn-on from 0V to VBR; faster than most microcontroller GPIO protection needs |
| Junction Temp Range | −55°C to +175°C - Enables under-hood automotive deployment without thermal derating penalties |
| AEC-Q101 Qualified | Yes - Validated for automotive electronic modules per stress test requirements (HTOL, TCT, ESD, etc.) |
Pinout & Package
Package: DO-204AL (DO-41), axial-leaded, epoxy-molded case with cathode band marking. Leads are pure tin-plated and solderable per J-STD-002. Weight ≈ 0.300g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Current sink during forward conduction | Connected to ground or low-impedance return path in unidirectional clamp configuration |
| Cathode (banded end) | Avalanche conduction terminal | Connected to protected line; conducts transient energy to ground when VLINE exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive electronics including engine control units and lighting modules |
| 400W peak pulse rating (10/1000μs) | Withstands IEC 61000-4-5 Combination Wave surges up to 4kV open-circuit / 2kA short-circuit |
| Clamping ratio VC/VBR ≈ 1.5 | Low overvoltage margin ensures protected ICs remain within absolute maximum ratings during transients |
| Reverse leakage <1 μA at 7.37V | Minimizes standby power loss in battery-powered systems and avoids false triggering in high-impedance nodes |
| UL Recognized (E326243) | Meets safety standards for end-equipment certification in industrial and consumer applications |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Interface |
|---|---|
Use Scenario: Protecting LIN bus transceivers and microcontroller I/O pins from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between LIN line and ground, triggered within 1ps to clamp spikes above 9.1V. Use Value: Prevents latch-up or gate oxide damage in 5V-tolerant transceivers while maintaining signal integrity below 7.37V normal operation. |
Use Scenario: Safeguarding 4–20mA current loop receivers against EFT bursts and induced surges in factory floor wiring. IC Role / Device Role / Timing Role: Primary protection element shunting transients to ground before they reach precision op-amps or ADC front-ends. Use Value: Limits voltage excursion to ≤13.8V during 30A pulses, preserving 12-bit measurement accuracy and avoiding system reset. |
| LED Driver Input Stage | USB-C Power Delivery Port |
Use Scenario: Input rail protection for constant-current LED drivers subjected to hot-swap and capacitive load switching events. IC Role / Device Role / Timing Role: Standoff device absorbing 400W inductive kickback from MOSFET gate drivers or boost inductors. Use Value: Enables use of lower-cost 16V-rated input capacitors and eliminates need for secondary crowbar circuitry. |
Use Scenario: Secondary-level surge suppression on VBUS line of USB-C PD ports exposed to accidental AC mains contact. IC Role / Device Role / Timing Role: Fast-acting clamp limiting VBUS overshoot during 10/1000μs surges before e-mark ICs or PD controllers are stressed. Use Value: Complies with USB PD 3.1 ESD/surge requirements while adding <0.5mm height to compact port layout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ9.0A | Surface-mount SMB package; 9.0V nominal, 14.5V clamping at 29A; same 400W rating but higher IPPM tolerance | Better suited for automated SMT assembly; requires PCB pad redesign and lacks AEC-Q101 qualification | Select when board space is constrained and automotive qualification is not required |
| P4KE9.1A | Tighter VBR tolerance (8.65–9.55V vs. 8.19–10.00V); same DO-41 package and AEC-Q101 status | Improved consistency in mass production for narrow-voltage-margin designs; identical thermal and surge performance | Choose for higher yield in 9.1V ±5% systems where tighter VBR distribution reduces design guardbanding |
Compared with P4KE9.1A and SMBJ9.0A, the P4KE9.1H offers automotive-grade reliability in through-hole form with broader VBR tolerance-ideal for cost-sensitive, high-volume automotive modules where manual rework or legacy wave-solder processes are used.
Availability
P4KE9.1H is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and LED driver input protection requiring stable component supply and long-term lifecycle support.
Supply support for P4KE9.1H 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, with global manufacturing and quality certifications.
The P4KE series was developed for high-reliability transient suppression in automotive and industrial environments, emphasizing AEC-Q101 compliance, tight thermal stability, and repeatable clamping performance across temperature extremes.
FAQ
What is the key difference between P4KE9.1H and standard P4KE9.1?
The "H" suffix in P4KE9.1H denotes AEC-Q101 qualification-verified through accelerated stress testing including high-temperature operating life, temperature cycling, and ESD robustness. Standard P4KE9.1 lacks this automotive validation and is intended for commercial/industrial use only. P4KE9.1H retains identical electrical specs and DO-41 packaging but adds full traceability and lot-level automotive documentation required for Tier 1 suppliers.
Can P4KE9.1H be used in bidirectional configurations?
No-P4KE9.1H is unidirectional and must be installed with cathode toward the protected line. For bidirectional protection, select P4KE9.1CA (dual-diode configuration) or P4KE9.1A with CA suffix. Using P4KE9.1H in reverse polarity risks permanent failure during negative transients, as its anode lacks avalanche capability in reverse bias.
What is the maximum recommended PCB trace length between P4KE9.1H and protected IC?
To maintain sub-nanosecond response, keep total trace inductance below 10 nH-typically achieved with ≤10 mm straight trace from cathode to ground plane and direct anode-to-ground via. Longer paths increase clamping voltage due to L·di/dt; measured VC can exceed 13.8V by >2V if trace inductance exceeds 25 nH.
Does P4KE9.1H require derating at elevated ambient temperatures?
Yes-its 400W peak pulse rating applies only at TA = 25°C. Derating follows Fig.2 in the datasheet: at 85°C ambient, peak power drops to ~280W. Steady-state power remains 1W up to 75°C lead temperature; beyond that, thermal resistance and board copper area become critical for sustained surge duty cycles.
Is P4KE9.1H compliant with RoHS and halogen-free standards?
Yes-P4KE9.1H meets RoHS Directive 2011/65/EU and is halogen-free per IEC 61249-2-21, with bromine and chlorine content <900 ppm each. The molding compound is UL 94V-0 rated, and leads are pure tin-plated without lead, antimony, or bismuth alloys.
P4KE9.1H 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
P4KE9.1H FAQ
1.How can I place an order for P4KE9.1H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE9.1H 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 P4KE9.1H reliable?
The price and inventory of P4KE9.1H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE9.1H is usually 5 days.
3.What payment methods are accepted for P4KE9.1H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE9.1H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE9.1H?
P4KE9.1H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE9.1H 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 P4KE9.1H?
For technical support, including P4KE9.1H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE9.1H requirements.
6.How does Aetrix verify that P4KE9.1H is sourced from the original manufacturer or authorized distributors?
All P4KE9.1H 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 P4KE9.1H meets industry standards.
7.What is the process for return or replacement of P4KE9.1H?
All P4KE9.1H units undergo pre-shipment inspection (PSI). If there is an issue with P4KE9.1H, 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 P4KE9.1H part is unused and in its original packaging.
Return procedure for P4KE9.1H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4KE9.1H Tags
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