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Taiwan Semiconductor Corporation P4KE7.5CH
- Part No.:
- P4KE7.5CH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE7.5CH.pdf
- Description:
- 400W, 7.5V, BIDIRECTIONAL, TVS
- Quantity:
- Payment:
- Shipping:
Inventory:8,976
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Product details
Overview
P4KE7.5CH from Taiwan Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-204AL (DO-41) package, rated for 400W peak pulse power at 10/1000μs waveform, with 6.75–8.25V breakdown voltage (VBR), 6.05V working stand-off voltage (VWM), and 11.7V maximum clamping voltage (VC) at 35A peak pulse current - deployed for automotive-grade ESD and load-dump protection in power supply inputs and microcontroller I/O lines.
For engineers reviewing the P4KE7.5CH datasheet, P4KE7.5CH pinout, P4KE7.5CH application, or P4KE7.5CH equivalent, key selection criteria include AEC-Q101 qualification, unidirectional polarity marking, 175°C junction temperature rating, low 1.0ps response time, and compatibility with 5.5–7.5V system rails requiring robust transient immunity per ISO 7637-2 and IEC 61000-4-5.
Technical Context
The P4KE7.5CH operates as a silicon avalanche diode optimized for fast clamping of high-energy transients. Its unidirectional configuration enables cathode-anode conduction only during reverse overvoltage events, with VBR tested at 10mA and guaranteed minimum 6.75V to ensure reliable turn-on above nominal 5V/3.3V logic rails.
It features a low dynamic impedance enabling stable clamping performance across surge currents up to 35A, and its 175°C maximum junction temperature supports operation in under-hood automotive environments. The device meets UL 94V-0 flammability and JESD201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.05 V - Maximum continuous reverse operating voltage before leakage exceeds 500 μA; ensures no false triggering on 5V systems. |
| VBR @ 10 mA | 6.75–8.25 V - Breakdown voltage range at 10 mA test current; guarantees turn-on within safe margin above 5V rail. |
| VC @ 35 A | 11.7 V - Clamped voltage at 35A 10/1000μs surge; limits downstream IC stress to ≤12V during load dump. |
| PPK | 400 W - Peak pulse power handling capability; sustains single 10/1000μs transients without degradation. |
| TJMAX | 175 °C - Maximum junction temperature; enables use in engine control units and power modules without derating. |
| Response Time | <1.0 ps - Avalanche turn-on delay from 0 V to VBR; faster than most ESD events and electrical fast transients. |
| Leakage @ VWM | <500 μA - Reverse leakage at 6.05V; negligible loading on low-power sensor interfaces. |
Pinout & Package
Package: DO-204AL (DO-41) axial-leaded through-hole package with pure tin-plated leads, 0.300g mass, and cathode band marking for unidirectional polarity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Forward current path / low-side reference | Connected to ground or low-impedance return; forms clamping path when cathode is stressed above VWM. |
| Cathode (banded end) | Transient voltage sensing node | Connected to protected line (e.g., 5V rail); avalanche conduction begins here when reverse voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS sensors per stress test requirements. |
| 400W 10/1000μs surge rating | Withstands ISO 7637-2 Pulse 5a (load dump) up to 120V/200ms without failure or parameter shift. |
| <1.0 ps response time | Clamps transients before propagation into sensitive analog front-ends or MCU GPIOs, reducing need for additional filtering. |
| UL 94V-0 molding compound | Self-extinguishing encapsulation prevents fire propagation in high-density PCB assemblies under fault conditions. |
| JESD201 Class 2 whisker resistance | Eliminates tin whisker growth risk in long-life automotive modules operating >15 years at elevated temperatures. |
Applications
| Automotive Power Input Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: 12V battery-fed ECU input subjected to ISO 7637-2 load dump pulses up to 120V. IC Role / Device Role / Timing Role: Unidirectional TVS placed between input rail and ground to clamp surges before LDO regulator. Use Value: Limits clamped voltage to 11.7V at 35A, protecting downstream 5V LDOs and microcontrollers without derating. |
Use Scenario: RS-485 transceiver I/O lines exposed to ESD events in factory automation equipment. IC Role / Device Role / Timing Role: Bidirectional clamping not applicable; P4KE7.5CH used on VCC rail to prevent supply collapse during bus faults. Use Value: 6.05V VWM allows clean 5V operation while clamping 8kV contact ESD to <12V, preserving signal integrity. |
| Consumer USB Power Port Protection | LED Driver Supply Rail Protection |
|
Use Scenario: 5V USB Type-A port on smart home hub experiencing hot-plug induced transients and cable discharge events. IC Role / Device Role / Timing Role: Standoff protection on VBUS line upstream of USB controller and power switch. Use Value: Sub-1ps response ensures clamping occurs before USB PHY damage threshold (typically 6V absolute max) is exceeded. |
Use Scenario: Constant-current LED driver IC powered from 5V buck converter output, subject to inductive kickback from LED string disconnect. IC Role / Device Role / Timing Role: TVS placed across driver IC's VDD-to-GND pins to absorb flyback energy. Use Value: 400W rating handles repetitive 100ns–1μs spikes from MOSFET switching, preventing latch-up or gate oxide rupture. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.0A | DO-214AA package, 7.0V nominal, 7.78V VC @ 34.1A, 600W rating | Surface-mount alternative with higher power but larger footprint; requires PCB rework for through-hole replacement. | Select SMBJ7.0A only if board space permits SMD layout and higher 600W surge margin is required. |
| P6KE7.5 | 600W rating, same DO-41 package, 11.3V VC @ 53A, non-AEC-Q101 | Higher surge capacity but lacks automotive qualification; suitable for industrial/commercial use only. | Choose P6KE7.5 where AEC-Q101 is not mandated and 600W pulse handling is critical for legacy designs. |
Compared with SMBJ7.0A and P6KE7.5, the P4KE7.5CH provides AEC-Q101 compliance in a proven DO-41 through-hole package with optimal 400W/11.7V clamping balance for cost-sensitive automotive modules where reliability and qualification outweigh raw power rating.
Availability
P4KE7.5CH is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, consumer USB power ports, and LED driver supply rails requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P4KE7.5CH 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 distribution and AEC-Q101 validation capabilities.
The P4KE series was developed specifically for automotive and industrial transient suppression, emphasizing robustness, repeatable clamping, and qualification-compliant reliability in harsh thermal and electrical environments.
FAQ
What is the polarity configuration of the P4KE7.5CH?
The P4KE7.5CH is a unidirectional TVS diode with cathode marked by a band on the DO-41 package. It conducts only when the cathode is positive relative to the anode, making it suitable for DC rail protection where polarity is fixed. This differs from bidirectional variants like P4KE7.5C, which protect AC or floating signals.
Does the P4KE7.5CH meet AEC-Q101 requirements?
Yes, the "H" suffix in P4KE7.5CH explicitly denotes AEC-Q101 qualification. Taiwan Semiconductor subjects this part to stress testing including high-temperature operating life, temperature cycling, and ESD per AEC-Q101 Rev D, confirming suitability for automotive under-hood and cabin applications.
What is the maximum clamping voltage of the P4KE7.5CH at rated surge current?
The P4KE7.5CH has a maximum clamping voltage (VC) of 11.7 V at 35 A peak pulse current (10/1000μs waveform). This value is guaranteed across temperature and process variation, ensuring downstream 5V ICs remain within safe absolute maximum ratings during surge events.
Can the P4KE7.5CH be used in bidirectional signal lines?
No - the P4KE7.5CH is unidirectional and unsuitable for bidirectional data lines such as RS-485 or CAN. For those applications, a bidirectional variant like P4KE7.5C must be selected. Using P4KE7.5CH on a bidirectional line would result in forward conduction during normal signal swings, disrupting communication.
What is the leakage current specification for the P4KE7.5CH at its working voltage?
The P4KE7.5CH exhibits ≤500 μA reverse leakage current at its 6.05 V working stand-off voltage (VWM). This low leakage ensures minimal impact on battery-powered or high-impedance sensor circuits, preserving accuracy and extending operational lifetime in always-on systems.
P4KE7.5CH 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):
- 6.05V
- Voltage - Breakdown (Min):
- 6.75V
- Voltage - Clamping (Max) @ Ipp:
- 11.7V
- Current - Peak Pulse (10/1000µs):
- 35A
- 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)
P4KE7.5CH FAQ
1.How can I place an order for P4KE7.5CH through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE7.5CH 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 P4KE7.5CH reliable?
The price and inventory of P4KE7.5CH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE7.5CH is usually 5 days.
3.What payment methods are accepted for P4KE7.5CH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE7.5CH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE7.5CH?
P4KE7.5CH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE7.5CH 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 P4KE7.5CH?
For technical support, including P4KE7.5CH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE7.5CH requirements.
6.How does Aetrix verify that P4KE7.5CH is sourced from the original manufacturer or authorized distributors?
All P4KE7.5CH 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 P4KE7.5CH meets industry standards.
7.What is the process for return or replacement of P4KE7.5CH?
All P4KE7.5CH units undergo pre-shipment inspection (PSI). If there is an issue with P4KE7.5CH, 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 P4KE7.5CH part is unused and in its original packaging.
Return procedure for P4KE7.5CH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4KE7.5CH Tags
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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