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Taiwan Semiconductor Corporation P4KE8.2H
- Part No.:
- P4KE8.2H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE8.2H.pdf
- Description:
- 400W, 8.2V, UNIDIRECTIONAL, TVS
- Quantity:
- Payment:
- Shipping:
Inventory:6,094
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Product details
Overview
P4KE8.2H from Taiwan Semiconductor is a unidirectional transient voltage suppressor (TVS) diode designed for primary overvoltage protection in DC power rails and signal lines. It features a 8.2V nominal breakdown voltage, 6.63V working stand-off voltage, 12.5V maximum clamping voltage at 33A peak pulse current, and 400W peak pulse power rating per 10/1000μs waveform - deployed in automotive body control modules to protect CAN transceivers from load dump and ESD events.
For engineers reviewing the P4KE8.2H datasheet, P4KE8.2H pinout, P4KE8.2H application, or P4KE8.2H equivalent, key selection criteria include clamping voltage margin relative to protected IC VCC, leakage current below 1μA at 6.63V, AEC-Q101 qualification for automotive use, and DO-41 package compatibility with legacy through-hole PCB layouts.
Technical Context
The P4KE8.2H operates as a silicon avalanche diode with unidirectional polarity, triggered when reverse voltage exceeds its 7.38–9.02V breakdown range at 10mA test current. Its low dynamic impedance ensures rapid voltage clamping during fast transients, with sub-nanosecond response from 0V to VBR.
It sustains 400W non-repetitive surge energy under standardized 10/1000μs waveform, derates linearly above 25°C ambient, and maintains ≤1μA reverse leakage at VWM = 6.63V - enabling reliable protection of 5V and 3.3V logic interfaces without standby power penalty.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Voltage | 8.2V - defines rated standoff margin for 5V rail protection with headroom against ripple and tolerance. |
| Breakdown Voltage VBR | 7.38–9.02V @ 10mA - ensures conduction onset before damage threshold of downstream 5V logic ICs. |
| Working Stand-off Voltage VWM | 6.63V - maximum continuous reverse voltage tolerated without significant leakage; compatible with 5V ±10% systems. |
| Maximum Clamping Voltage VC | 12.5V @ 33A - limits transient voltage seen by protected circuit, staying below absolute max ratings of most 12V-tolerant I/O cells. |
| Peak Pulse Power PPK | 400W @ 10/1000μs - handles ISO 7637-2 Pulse 1 (inductive switch-off) and IEC 61000-4-5 Combination Wave surges. |
| Reverse Leakage ID | <1μA @ 6.63V - avoids measurable current draw in battery-powered or low-quiescent systems. |
| Operating Junction Temp | −55°C to +175°C - supports under-hood automotive placement and industrial temperature cycling. |
Pinout & Package
Package: DO-204AL (DO-41), axial leaded, epoxy-molded case with cathode band marking. Leads are pure tin-plated, solderable per J-STD-002, and meet JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Ground reference terminal | Connected to system ground or low-side return path; completes clamping loop during transient. |
| Cathode | Protected line input | Connected to line being protected (e.g., 5V rail or CAN_H); conducts avalanche current to ground when VAK > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS sensor interfaces requiring zero-failure reliability. |
| 400W surge capability | Withstands repetitive ISO 7637-2 Pulse 1 (−150V, 50Ω, 2Ω series) without degradation across full temperature range. |
| Clamping voltage ≤12.5V | Ensures protected 5V microcontroller I/O pins remain within safe operating area during 33A transient events. |
| Leakage <1μA at 6.63V | Eliminates standby current concerns in always-on vehicle networks such as LIN or low-power CAN FD nodes. |
| Fast response <1ps | Activates before ESD pulses (IEC 61000-4-2, 15kV contact) propagate into sensitive analog front-ends or communication PHYs. |
Applications
| Automotive Body Control Module | Industrial PLC Digital Input |
|---|---|
|
Use Scenario: Protecting 5V supply rail of BCM microcontroller from alternator load dump and relay coil flyback. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between 5V rail and chassis ground, activated only during overvoltage events. Use Value: Limits rail excursion to ≤12.5V during 400W transients, preventing latch-up or gate oxide damage in MCU power domains. |
Use Scenario: Shielding 24V digital input channel from field-wiring induced surges in factory automation cabinets. IC Role / Device Role / Timing Role: Front-end transient suppressor on optocoupler input side, absorbing IEC 61000-4-4 EFT bursts before signal conditioning. Use Value: Maintains <1μA leakage at 24V-rated interface, avoiding false triggering while clamping 33A spikes to safe levels for downstream logic. |
| LED Driver Power Supply | USB-C Port Protection |
|
Use Scenario: Safeguarding constant-current LED driver IC from inductive kickback during PWM dimming switching. IC Role / Device Role / Timing Role: Parallel-connected TVS across driver output, conducting surge energy away from MOSFET drain-source junction. Use Value: 12.5V clamping prevents avalanche failure of 30V-rated driver FETs during 10/1000μs inductive transients. |
Use Scenario: Secondary-level overvoltage guard on VBUS line of USB-C receptacle in portable medical devices. IC Role / Device Role / Timing Role: Standoff-rated TVS placed after primary ESD array, handling slower but higher-energy surges missed by fast diodes. Use Value: 6.63V VWM allows clean 5V operation; 12.5V VC stays below USB PD 3.0 20V max, preserving port controller integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ8.0A | Surface-mount SMB package; 8.0V nominal, 12.0V clamping at 32.3A; same 400W rating. | Requires PCB redesign for SMD layout; better thermal performance in high-density boards. | Select when transitioning from through-hole to automated assembly or improving power density. |
| 1.5KE8.2C | Higher 1500W rating; bidirectional configuration; DO-201 package; 13.4V clamping at 113A. | Over-specified for unidirectional 5V rail protection; introduces unnecessary capacitance and cost. | Choose only if bidirectional surge immunity (e.g., AC-coupled data lines) and higher energy handling are required. |
Compared with SMBJ8.0A, P4KE8.2H offers drop-in replacement in legacy DO-41 sockets without layout change but trades off thermal efficiency; versus 1.5KE8.2C, it delivers precise 5V-system clamping with lower parasitic capacitance and reduced board space.
Availability
P4KE8.2H is available at Aetrix Electronics and suitable for automotive electronics, industrial control systems, and LED lighting applications requiring stable component supply with AEC-Q101 compliance and long-term manufacturability.
Supply support for P4KE8.2H 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 for automotive, industrial, and consumer markets.
The P4KE series targets cost-sensitive, high-reliability overvoltage protection in automotive ECUs and industrial equipment, emphasizing AEC-Q101 qualification, robust surge handling, and broad voltage coverage from 6.8V to 440V.
FAQ
What is the clamping voltage of P4KE8.2H at its rated peak pulse current?
The P4KE8.2H has a maximum clamping voltage of 12.5V at 33A peak pulse current (IPPM), measured under the standard 10/1000μs waveform. This value ensures protected circuits-such as 5V microcontrollers or CAN transceivers-remain within safe operating voltage limits during surge events. The clamping behavior is verified per ANSI/IEEE C62.35 and confirmed in Taiwan Semiconductor's official P4KE series datasheet revision N2104.
Is P4KE8.2H suitable for automotive applications?
Yes, P4KE8.2H is AEC-Q101 qualified, making it suitable for automotive applications including body control modules, infotainment power supplies, and sensor interface protection. Its −55°C to +175°C operating junction temperature range, robust surge capability, and certified reliability testing align with automotive-grade requirements. The "H" suffix explicitly denotes AEC-Q101 compliance per Taiwan Semiconductor's ordering nomenclature.
What package type does P4KE8.2H use, and is it lead-free?
P4KE8.2H uses the DO-204AL (DO-41) axial-leaded package with pure tin-plated leads compliant with RoHS and halogen-free standards per IEC 61249-2-21. The molding compound meets UL 94V-0 flammability rating, and the device passes JESD 201 Class 2 whisker testing - confirming suitability for lead-free reflow and wave soldering processes.
How does P4KE8.2H differ from P4KE8.2A?
P4KE8.2H and P4KE8.2A share identical electrical specifications (VBR = 7.79–8.61V, VWM = 7.02V, VC = 12.1V), but P4KE8.2H is AEC-Q101 qualified while P4KE8.2A is not. The "H" suffix denotes automotive qualification, including extended temperature cycling, humidity testing, and failure rate validation - critical for deployment in safety-relevant vehicle subsystems.
Can P4KE8.2H be used in bidirectional signal line protection?
No, P4KE8.2H is a unidirectional TVS diode intended for DC rail protection where polarity is fixed (e.g., 5V supply to ground). For bidirectional applications like AC-coupled data lines or RS-485, a bidirectional variant such as P4KE8.2CA or SMBJ8.0CA must be selected - these feature symmetrical breakdown in both directions and lack cathode band marking.
P4KE8.2H 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):
- 6.63V
- Voltage - Breakdown (Min):
- 7.38V
- Voltage - Clamping (Max) @ Ipp:
- 12.5V
- Current - Peak Pulse (10/1000µs):
- 33A
- 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)
P4KE8.2H FAQ
1.How can I place an order for P4KE8.2H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE8.2H 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 P4KE8.2H reliable?
The price and inventory of P4KE8.2H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE8.2H is usually 5 days.
3.What payment methods are accepted for P4KE8.2H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE8.2H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE8.2H?
P4KE8.2H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE8.2H 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 P4KE8.2H?
For technical support, including P4KE8.2H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE8.2H requirements.
6.How does Aetrix verify that P4KE8.2H is sourced from the original manufacturer or authorized distributors?
All P4KE8.2H 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 P4KE8.2H meets industry standards.
7.What is the process for return or replacement of P4KE8.2H?
All P4KE8.2H units undergo pre-shipment inspection (PSI). If there is an issue with P4KE8.2H, 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 P4KE8.2H part is unused and in its original packaging.
Return procedure for P4KE8.2H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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