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Taiwan Semiconductor Corporation P4KE82A
- Part No.:
- P4KE82A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE82A.pdf
- Description:
- TVS DIODE 70.1VWM 113VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:8,142
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Product details
Overview
P4KE82A from Taiwan Semiconductor is a unidirectional 400W transient voltage suppressor (TVS) diode designed for overvoltage protection in DC power rails and signal lines. It features a nominal breakdown voltage of 82V, a working stand-off voltage of 70.1V, clamps transients to ≤113V at 3.7A peak pulse current, and delivers sub-nanosecond response for ESD and EFT immunity in automotive body electronics.
For engineers reviewing the P4KE82A datasheet, P4KE82A pinout, P4KE82A application, or P4KE82A equivalent, key selection criteria include its DO-41 package compatibility, 70.1V working voltage margin relative to 82V nominal systems, 113V clamping performance under 10/1000μs surge, and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
The P4KE82A operates as a unidirectional avalanche diode with precise breakdown voltage tolerance (77.9–86.1V at 1mA test current), enabling robust protection against inductive switching spikes and lightning-induced surges. Its low dynamic impedance ensures stable clamping during fast-rising transients up to 400W peak power.
Designed for DC-biased circuits, it exhibits reverse leakage <1μA at 70.1V and forward voltage of 3.5V at 25A-critical for minimizing standby loss in always-on automotive modules. Thermal operation spans –55°C to +175°C junction temperature, supporting under-hood deployment without derating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 70.1 V - Maximum continuous DC or RMS voltage the device blocks without conduction |
| VBR min/max | 77.9 V / 86.1 V at 1 mA - Tight breakdown window ensures predictable turn-on across temperature and unit variation |
| VC @ IPPM | 113 V at 3.7 A - Clamping voltage during 10/1000μs surge defines maximum stress on protected ICs |
| PPK | 400 W - Peak pulse power handling capacity per single non-repetitive transient event |
| IR @ VWM | <1 μA - Ultra-low leakage preserves battery life in low-power automotive sensors |
| TJ max | +175 °C - Enables placement near heat sources like power converters or engine control units |
| Response time | <1.0 ps - Sub-picosecond avalanche initiation ensures protection before ESD pulses damage CMOS inputs |
Pinout & Package
Package: DO-204AL (DO-41) axial-leaded plastic case with cathode band marking; meets UL 94V-0 flammability rating and JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | DC return path / ground reference | Connected to system ground or low-side rail; carries full surge current during clamping |
| Cathode | Protected line input | Connected to line being protected (e.g., 12V supply); avalanche conduction occurs anode-to-cathode when VAK exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive under-hood applications including engine control, lighting, and body electronics |
| 400W 10/1000μs surge rating | Withstands high-energy transients from load dump or inductive kick without degradation |
| Clamping ratio VC/VBR ≈ 1.45 | Low overvoltage margin ensures downstream ICs remain within absolute maximum ratings during clamping |
| UL Recognized #E-326243 | Meets safety standards for end-equipment certification in industrial and automotive systems |
| Halogen-free & RoHS compliant | Supports environmental compliance requirements for global OEM and Tier-1 supply chains |
Applications
| Automotive Lighting Systems | Engine Control Unit (ECU) Power Rails |
|---|---|
Use Scenario: Protecting LED driver ICs from load-dump transients during vehicle battery disconnection. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 12V supply and ground, clamping spikes above 70.1V. Use Value: Prevents latch-up or gate oxide rupture in buck controllers by limiting voltage to ≤113V during 400W surges. | Use Scenario: Safeguarding microcontroller power pins against alternator-induced load dump events. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main 5V/3.3V regulator input, activated within <1ps. Use Value: Maintains MCU functional integrity during ISO 7637-2 Pulse 5a (12V system, 100V/400ms) by holding rail below 113V. |
| Industrial Sensor Signal Lines | Power Supply Input Protection |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS on differential or single-ended signal paths, grounded via shortest trace. Use Value: Limits ESD-induced voltage overshoot to ≤113V while adding <1pF parasitic capacitance-preserving signal integrity up to 1MHz. | Use Scenario: Front-end surge suppression for AC/DC adapters and DC-DC converters in factory automation equipment. IC Role / Device Role / Timing Role: First-line defense against lightning-induced surges on 24V/48V input rails. Use Value: Absorbs 400W transients per IEC 61000-4-5 Level 4 (4kV line-earth) without failure or parameter shift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ80A | Surface-mount SMB package; 80V VWM, 120V VC @ 3.3A; 600W rating | Higher power handling but larger footprint; requires PCB rework for through-hole replacement | Select for new SMT designs needing higher surge margin; not drop-in for DO-41 layouts |
| 1.5KE82A | Same DO-41 package; 82V nominal; 400W rating; VC = 118V @ 3.5A; slightly looser VBR tolerance | Identical mounting and thermal profile; used in legacy industrial power supplies | Acceptable alternative where 118V vs. 113V clamping is acceptable and AEC-Q101 is not required |
Compared with SMBJ80A and 1.5KE82A, the P4KE82A offers tighter clamping (113V), AEC-Q101 qualification for automotive use, and optimized leakage (<1μA), making it preferred for space-constrained, high-reliability DC rail protection where exact DO-41 fit and low standby loss are critical.
Availability
P4KE82A is available at Aetrix Electronics and suitable for automotive lighting systems, engine control unit (ECU) power rails, and industrial sensor signal line protection requiring stable component supply and long-term lifecycle support.
Supply support for P4KE82A 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 for automotive, industrial, and consumer markets.
The P4KE series targets cost-sensitive, high-volume overvoltage protection applications where reliability, standardization, and AEC-Q101 compliance are essential-particularly in automotive body electronics and industrial power interfaces.
FAQ
What is the maximum clamping voltage of the P4KE82A under standard surge conditions?
The P4KE82A clamps to a maximum of 113 V when subjected to a 10/1000 μs waveform with a peak pulse current of 3.7 A. This value is measured per ANSI/IEEE C62.35 and represents the upper limit of voltage seen by downstream circuitry during transient suppression. The P4KE82A maintains this clamping performance across its full operating temperature range of –55°C to +175°C.
Is the P4KE82A suitable for automotive applications requiring AEC-Q101 qualification?
Yes, the P4KE82A is explicitly AEC-Q101 qualified, as confirmed in the Taiwan Semiconductor datasheet revision N2104. This qualification covers stress testing for temperature cycling, humidity bias, mechanical shock, and high-temperature operating life-making the P4KE82A appropriate for under-hood and cabin applications such as lighting modules, body control units, and sensor interfaces where automotive-grade reliability is mandatory.
How does the P4KE82A differ from the P4KE82 (non-A suffix) variant?
The P4KE82A has a tighter breakdown voltage tolerance (77.9–86.1 V at 1 mA) compared to the P4KE82 (73.8–90.2 V), resulting in more consistent clamping behavior across production lots. Both share identical package (DO-41), power rating (400 W), and thermal specs, but the 'A' suffix denotes enhanced parametric screening-critical for designs requiring precise overvoltage thresholds, such as regulated 82V bus protection in telecom or industrial systems.
What is the reverse leakage current specification for the P4KE82A at its working voltage?
The P4KE82A exhibits a maximum reverse leakage current of 1 μA when biased at its working stand-off voltage of 70.1 V and tested at 25°C. This ultra-low leakage supports energy-efficient designs, especially in always-on automotive modules where cumulative current draw from multiple TVS devices must remain below microampere thresholds to avoid battery drain.
Can the P4KE82A be used in bidirectional configurations?
No, the P4KE82A is a unidirectional TVS diode intended for DC-biased circuits only. Bidirectional operation requires a CA-suffixed part (e.g., P4KE82CA) or a dedicated bipolar device. Using the P4KE82A in AC or reverse-biased applications risks permanent failure due to forward conduction during negative half-cycles; its design assumes cathode-positive polarity with respect to anode.
P4KE82A 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):
- 70.1V
- Voltage - Breakdown (Min):
- 77.9V
- Voltage - Clamping (Max) @ Ipp:
- 113V
- Current - Peak Pulse (10/1000µs):
- 3.7A
- 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)
P4KE82A FAQ
1.How can I place an order for P4KE82A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE82A 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 P4KE82A reliable?
The price and inventory of P4KE82A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE82A is usually 5 days.
3.What payment methods are accepted for P4KE82A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE82A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE82A?
P4KE82A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE82A 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 P4KE82A?
For technical support, including P4KE82A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE82A requirements.
6.How does Aetrix verify that P4KE82A is sourced from the original manufacturer or authorized distributors?
All P4KE82A 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 P4KE82A meets industry standards.
7.What is the process for return or replacement of P4KE82A?
All P4KE82A units undergo pre-shipment inspection (PSI). If there is an issue with P4KE82A, 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 P4KE82A part is unused and in its original packaging.
Return procedure for P4KE82A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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