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Taiwan Semiconductor Corporation P4KE75H
- Part No.:
- P4KE75H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE75H.pdf
- Description:
- 400W, 75V, UNIDIRECTIONAL, TVS
- Quantity:
- Payment:
- Shipping:
Inventory:3,755
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Product details
Overview
P4KE75H 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 75V nominal breakdown voltage (67.5–82.5V at 1mA), 60.7V working stand-off voltage, 108V maximum clamping voltage at 3.8A peak pulse current, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the P4KE75H datasheet, P4KE75H pinout, P4KE75H application, or P4KE75H equivalent, this device is selected for high-energy ESD and lightning surge suppression where low clamping ratio, fast sub-nanosecond response (<1.0ps), and stable temperature coefficient (0.105%/°C) are critical to protect downstream ICs in automotive body control modules, industrial PLC I/O ports, and LED driver input stages.
Technical Context
The P4KE75H operates as a unidirectional avalanche diode with a DO-204AL (DO-41) axial package and cathode-band polarity marking. Its clamping action begins at VBR (min 67.5V), sustains 400W peak pulse power at 10/1000μs waveform, and maintains <1μA reverse leakage above 60.7V.
It exhibits a junction temperature range of –55°C to +175°C, supports 40A non-repetitive forward surge current (8.3ms half-sine), and delivers a clamping ratio (VC/VBR) of ≤1.60 - confirmed by test data showing VC = 108V at IPPM = 3.8A and VBR = 67.5V min.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Voltage | 75 V - defines rated standoff margin before avalanche conduction begins |
| Breakdown Voltage VBR | 67.5–82.5 V @ 1 mA - verified conduction threshold under standardized test current |
| Working Stand-off Voltage VWM | 60.7 V - maximum continuous reverse voltage without significant leakage |
| Maximum Clamping Voltage VC | 108 V @ 3.8 A - peak voltage seen by protected circuit during 10/1000μs surge |
| Peak Pulse Power PPK | 400 W - energy-handling capability per ANSI/IEEE C62.35 10/1000μs waveform |
| Junction Temperature Range | –55°C to +175°C - enables operation in under-hood automotive and industrial environments |
| Reverse Leakage ID | <1 μA @ 60.7 V - ensures minimal standby power loss and signal integrity |
Pinout & Package
Package: DO-204AL (DO-41), axial leaded, epoxy-molded case meeting UL 94V-0 flammability rating; cathode indicated by band-marked end; pure tin-plated leads compliant with J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Ground reference terminal | Connected to system ground or low-side return path; carries full surge current during clamping |
| Cathode | Protected line terminal | Connected to line being protected (e.g., 24V rail); avalanche conduction occurs from cathode to anode when V > VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and infotainment power supplies |
| Clamping ratio ≤1.60 | Ensures protected ICs experience less than 60% overvoltage margin during worst-case surge |
| Response time <1.0 ps | Activates before most ESD events fully develop, limiting voltage overshoot on sensitive inputs |
| UL Recognized #E-326243 | Confirms compliance with safety standards for end-equipment certification (e.g., IEC 61000-4-5) |
| Halogen-free & RoHS | Meets IEC 61249-2-21 and environmental directives for global manufacturing and recycling |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Card |
|---|---|
Use Scenario: 12V/24V supply rail exposed to load dump and ISO 7637-2 pulses in vehicle door modules. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed upstream of LDO regulators and CAN transceivers. Use Value: Limits transient voltage to ≤108V, preventing latch-up or gate oxide damage in 3.3V/5V logic ICs. |
Use Scenario: 24V DC digital input channel subject to field-wiring induced surges and EFT bursts. IC Role / Device Role / Timing Role: First-line protection before optocoupler input and microcontroller GPIO. Use Value: Absorbs 400W surges without degradation, maintaining signal integrity across 10k+ cycles per IEC 61000-4-4. |
| LED Driver Input Stage | RS-485 Transceiver Port |
Use Scenario: Off-board AC/DC adapter output feeding constant-current LED drivers in streetlight systems. IC Role / Device Role / Timing Role: DC bus protector against lightning-induced common-mode surges on long cable runs. Use Value: Withstands repeated 10/1000μs surges up to 3.8A while holding clamping below 108V - preserving MOSFET gate drive margins. |
Use Scenario: Industrial RS-485 node connected to unshielded twisted pair in factory automation networks. IC Role / Device Role / Timing Role: Line-side TVS on A/B differential pair and common-mode ground path. Use Value: Sub-nanosecond response prevents data corruption during ESD events; low leakage avoids bias current errors in termination resistors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ75A | Same DO-214AC (SMA) package; 75V VBR (67.5–82.5V), 100V VC @ 4.3A; 400W rating; no AEC-Q101 listing | Preferred for space-constrained PCBs using surface-mount layout; lacks automotive qualification | Select when board real estate limits axial components and AEC-Q101 is not required. |
| Vishay 1.5KE75A | Same DO-201AD package; identical 75V VBR range and 108V VC; 1500W rating (higher energy capacity); AEC-Q101 available only in "H" suffix variants | Suitable for higher-energy threats (e.g., indirect lightning); larger footprint and higher cost | Choose when surge threat level exceeds IEC 61000-4-5 Level 4 and board area permits larger case. |
Compared with SMAJ75A and 1.5KE75A, the P4KE75H offers AEC-Q101 qualification in the compact DO-41 axial form factor - making it optimal for automotive and industrial designs requiring proven reliability, legacy through-hole compatibility, and strict thermal derating control at 175°C junction temperature.
Availability
P4KE75H is available at Aetrix Electronics and suitable for automotive electronics, industrial PLC I/O protection, and LED lighting power supply design requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for P4KE75H 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 thyristors with global distribution and AEC-Q101 validation capability.
The P4KE series was developed for robust, cost-effective transient suppression in automotive, industrial, and consumer power systems - emphasizing high surge tolerance, tight parameter distribution, and extended temperature operation.
FAQ
What is the clamping voltage of P4KE75H at its rated peak pulse current?
The P4KE75H has a maximum clamping voltage (VC) of 108 V at 3.8 A peak pulse current (IPPM), measured under the standard 10/1000 μs double-exponential waveform. This value ensures downstream components see no more than 108 V during surge events, directly supporting design margin calculations for 75 V-rated circuits. The P4KE75H maintains this performance across its full operating temperature range.
Is P4KE75H unidirectional or bidirectional, and how is polarity marked?
The P4KE75H is a unidirectional TVS diode, intended for DC line protection where reverse voltage is blocked. Polarity is marked by a cathode band on the DO-41 package - the banded end connects to the protected line (cathode), while the unbanded end connects to ground (anode). Bidirectional variants use "CA" suffixes (e.g., P4KE75CA), which P4KE75H does not have.
Does P4KE75H meet automotive qualification standards?
Yes, the "H" suffix in P4KE75H explicitly denotes AEC-Q101 qualification - verified per stress tests including HTGB, HTRB, TCT, and ESD (HBM/MM). This makes P4KE75H suitable for automotive applications such as body control modules, infotainment power rails, and ADAS sensor interfaces where reliability under thermal cycling and vibration is mandatory.
What is the maximum steady-state power dissipation for P4KE75H?
The P4KE75H has a steady-state power dissipation (PD) rating of 1 W at lead temperature TL = 75°C, measured with 9.5 mm (0.375") lead lengths mounted on 5 × 5 mm copper pads. This value governs continuous power handling during abnormal overvoltage conditions - not surge events - and must be thermally managed via PCB copper area or heatsinking to avoid exceeding TJ(max) = 175°C.
How does P4KE75H compare to P4KE75A in terms of electrical parameters?
The P4KE75H and P4KE75A share identical electrical specifications - both have VBR = 67.5–82.5 V, VWM = 60.7 V, VC = 108 V, and PPK = 400 W - but differ in qualification: P4KE75H is AEC-Q101 qualified, while P4KE75A is not. The "H" suffix adds automotive-grade screening and traceability without altering baseline TVS performance. Both use DO-204AL packaging and cathode-band marking.
P4KE75H 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):
- 60.7V
- Voltage - Breakdown (Min):
- 67.5V
- Voltage - Clamping (Max) @ Ipp:
- 108V
- Current - Peak Pulse (10/1000µs):
- 3.8A
- 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)
P4KE75H FAQ
1.How can I place an order for P4KE75H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE75H 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 P4KE75H reliable?
The price and inventory of P4KE75H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE75H is usually 5 days.
3.What payment methods are accepted for P4KE75H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE75H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE75H?
P4KE75H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE75H 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 P4KE75H?
For technical support, including P4KE75H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE75H requirements.
6.How does Aetrix verify that P4KE75H is sourced from the original manufacturer or authorized distributors?
All P4KE75H 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 P4KE75H meets industry standards.
7.What is the process for return or replacement of P4KE75H?
All P4KE75H units undergo pre-shipment inspection (PSI). If there is an issue with P4KE75H, 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 P4KE75H part is unused and in its original packaging.
Return procedure for P4KE75H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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