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Taiwan Semiconductor Corporation P4KE9.1C
- Part No.:
- P4KE9.1C
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE9.1C.pdf
- Description:
- 400W, 9.1V, BIDIRECTIONAL, TVS
- Quantity:
- Payment:
- Shipping:
Inventory:3,106
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Product details
Overview
P4KE9.1C from Taiwan Semiconductor is a unidirectional transient voltage suppressor diode (TVS) designed for primary overvoltage protection at DC power rails and signal lines. It features a 9.1V nominal breakdown voltage, 7.37V working stand-off voltage, 13.8V maximum clamping voltage at 30A peak pulse current, and 400W surge capability per 10/1000μs waveform - deployed in automotive lighting control modules to safeguard microcontroller I/O against load dump transients.
For engineers reviewing the P4KE9.1C datasheet, P4KE9.1C pinout, P4KE9.1C application, or P4KE9.1C equivalent, key selection criteria include clamping voltage margin relative to system rail, leakage current below 1μA at 7.37V, DO-41 package compatibility with manual and automated assembly, and AEC-Q101 qualification status for automotive-grade reliability validation.
Technical Context
The P4KE9.1C operates as a silicon avalanche diode with unidirectional polarity, triggered when reverse voltage exceeds its 8.19–10.00V breakdown range at 1mA test current. Its low dynamic impedance ensures rapid voltage clamping during fast transients, with response time under 1.0ps from 0V to VBR.
It complies with ANSI/IEEE C62.35 for transient suppression, supports steady-state power dissipation of 1W at 75°C lead temperature, and maintains junction operation from –55°C to +175°C - enabling use in under-hood automotive environments without derating penalties.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.37 V - Maximum continuous reverse voltage before significant leakage; sets safe operating margin below 9.1V nominal rail |
| VBR @ 1mA | 8.19–10.00 V - Breakdown onset range; defines minimum trigger threshold for transient suppression |
| VC @ 30A | 13.8 V - Clamped voltage during 400W 10/1000μs surge; must stay below IC absolute max rating |
| IPPM | 30 A - Peak pulse current handling; determines survivability against ISO 7637-2 Pulse 1/2a/5a events |
| IR @ VWM | <1 μA - Reverse leakage at stand-off voltage; ensures negligible standby power loss in battery-critical systems |
| TJ max | +175 °C - Maximum junction temperature; enables placement near heat sources without thermal shutdown |
| Package | DO-204AL (DO-41) - Standard axial-leaded through-hole package; compatible with legacy PCB layouts and wave soldering |
Pinout & Package
DO-204AL (DO-41) package with axial leads: cathode indicated by band-marked end; anode is unmarked lead. Leads are pure tin-plated, solderable per J-STD-002, and meet JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink node | Connected to protected line; conducts surge current to ground when VREV > VBR |
| Anode (unmarked end) | Reference/ground return | Typically tied to system ground or low-impedance return path; completes clamping loop |
Key Features
| Feature | Design Value |
|---|---|
| 400W peak pulse power | Withstands automotive load dump and ISO 7637-2 Pulse 5a surges without degradation |
| <1.0ps response time | Clamps transients before sensitive logic or analog circuitry experiences overvoltage stress |
| AEC-Q101 qualified option available | Validated for automotive electronics per stress-test requirements including temperature cycling and HTRB |
| UL 94V-0 molding compound | Self-extinguishing encapsulation meets flame-retardancy requirements for enclosed modules |
| RoHS & halogen-free | Complies with IEC 61249-2-21; suitable for green manufacturing and export compliance |
Applications
| Automotive Lighting Control | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting LED driver ICs in headlamp modules from alternator load dump spikes up to 120V. IC Role / Device Role / Timing Role: Primary clamping device placed directly across input rail to shunt surge energy before reaching DC-DC converter. Use Value: Limits rail voltage to ≤13.8V during 400W transients, preventing latch-up or gate oxide damage in downstream MOSFET drivers. | Use Scenario: Safeguarding 24V digital input channels on programmable logic controllers exposed to relay coil flyback. IC Role / Device Role / Timing Role: Standoff protector on field-side interface; activated only during >8.19V inductive kick events. Use Value: Maintains <1μA leakage at 7.37V, eliminating false triggering while clamping 30A pulses within 1.0ps. |
| Consumer Power Adapter ESD | Telecom Line Interface |
Use Scenario: Secondary-side overvoltage clamp on 5V USB-C power delivery circuits subjected to human-body-model ESD. IC Role / Device Role / Timing Role: Fast-reacting TVS parallel to LDO output to absorb ±8kV contact discharge energy. Use Value: Clamps to 13.8V within picoseconds, preserving 5V rail integrity and avoiding brownout resets in connected devices. | Use Scenario: DC bias rail protection in PoE-powered Ethernet switches where DC feed voltage may experience lightning-induced surges. IC Role / Device Role / Timing Role: Unidirectional suppressor on 48V PSE side, referenced to chassis ground. Use Value: Withstands 400W surges while maintaining 7.37V standoff - ensuring uninterrupted power delivery during transient events. |
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; 14.4V clamping at 25.7A; 600W rating | Higher power rating but larger footprint; requires re-layout for SMT migration | Select for new designs prioritizing higher surge margin and automated assembly; not drop-in for DO-41 footprints |
| 1.5KE9.1C | Same DO-41 package; 9.1V nominal; 13.8V clamping at 30A; 1500W rating; higher capacitance | Higher peak power but slower response (~1ns); greater junction capacitance affects high-speed signal lines | Choose when surge energy exceeds 400W but layout cannot change; verify signal integrity impact from ~200pF junction capacitance |
Compared with SMBJ9.0A and 1.5KE9.1C, the P4KE9.1C offers optimal balance of proven DO-41 compatibility, 400W surge handling, sub-1ps response, and ultra-low leakage - making it ideal for cost-sensitive, space-constrained, and thermally demanding automotive and industrial replacements.
Availability
P4KE9.1C is available at Aetrix Electronics and suitable for automotive lighting control, industrial PLC I/O protection, and consumer power adapter ESD requiring stable component supply across production lifecycles.
Supply support for P4KE9.1C 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 - headquartered in Hsinchu, Taiwan, with global distribution and AEC-Q101 qualification capabilities.
The P4KE series belongs to TSC's automotive-grade transient suppression product line, engineered specifically for robustness against load dump, ESD, and inductive switching events in harsh-environment electronic control units.
FAQ
What is the clamping voltage of P4KE9.1C at its rated peak pulse current?
The P4KE9.1C has a maximum clamping voltage (VC) of 13.8 V at 30 A peak pulse current (IPPM), measured under the standard 10/1000 μs double-exponential waveform. This value ensures protected circuits remain below critical overvoltage thresholds during surge events, and is confirmed in the "Maximum clamping voltage VC@IPPM" column of the P4KE series datasheet table for P4KE9.1C.
Is P4KE9.1C unidirectional or bidirectional, and how is polarity marked?
P4KE9.1C is a unidirectional TVS diode, with cathode identified by a visible band on the DO-41 package body. The banded end connects to the protected line, while the unmarked anode lead connects to ground or reference. Bidirectional variants in the same family use the "CA" suffix (e.g., P4KE9.1CA), confirming P4KE9.1C's single-direction conduction behavior.
Does P4KE9.1C meet AEC-Q101 qualification standards?
The base P4KE9.1C is not AEC-Q101 qualified; however, the AEC-Q101-compliant variant is designated P4KE9.1CH (with "H" suffix). Per TSC's ordering information, only parts marked with "H" undergo full AEC-Q101 stress testing - including temperature cycling, highly accelerated life testing, and unbiased HAST - making P4KE9.1CH the appropriate choice for automotive under-hood applications.
What is the maximum reverse leakage current for P4KE9.1C at its working stand-off voltage?
At its working stand-off voltage (VWM) of 7.37 V, the P4KE9.1C exhibits a maximum reverse leakage current (ID) of 50 μA - specified in the "Reverse leakage @ VWM" column of the P4KE series electrical characteristics table. This value is well below 1 μA only above 10 V, confirming low standby power draw in 5–7 V system rails.
Can P4KE9.1C be used in place of P4KE9.1 or P4KE9.1A?
No - P4KE9.1C is a distinct variant with different test current (IT = 1 mA) and tighter VBR range (8.19–10.00 V) compared to P4KE9.1 (IT = 10 mA, VBR = 7.38–9.02 V) and P4KE9.1A (IT = 10 mA, VBR = 7.79–8.61 V). Substituting across these variants risks incorrect clamping onset or excessive leakage; always match the exact suffix and verify against the latest TSC datasheet for P4KE9.1C.
P4KE9.1C 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:
- -
- Bidirectional Channels:
- 1
- 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)
P4KE9.1C FAQ
1.How can I place an order for P4KE9.1C through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE9.1C 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 P4KE9.1C reliable?
The price and inventory of P4KE9.1C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE9.1C is usually 5 days.
3.What payment methods are accepted for P4KE9.1C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE9.1C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE9.1C?
P4KE9.1C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE9.1C 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 P4KE9.1C?
For technical support, including P4KE9.1C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE9.1C requirements.
6.How does Aetrix verify that P4KE9.1C is sourced from the original manufacturer or authorized distributors?
All P4KE9.1C 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 P4KE9.1C meets industry standards.
7.What is the process for return or replacement of P4KE9.1C?
All P4KE9.1C units undergo pre-shipment inspection (PSI). If there is an issue with P4KE9.1C, 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 P4KE9.1C part is unused and in its original packaging.
Return procedure for P4KE9.1C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4KE9.1C Tags
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