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Taiwan Semiconductor Corporation P4KE82H
- Part No.:
- P4KE82H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE82H.pdf
- Description:
- 400W, 82V, UNIDIRECTIONAL, TVS
- Quantity:
- Payment:
- Shipping:
Inventory:2,869
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Product details
Overview
P4KE82H from Taiwan Semiconductor is a unidirectional transient voltage suppressor (TVS) diode designed for primary-level overvoltage protection in DC power rails and signal lines. It features a 82 V nominal breakdown voltage (VBR min/max = 73.8 V / 90.2 V at 1 mA), 66.4 V working stand-off voltage (VWM), 118 V maximum clamping voltage (VC) at 3.5 A peak pulse current, and 400 W peak pulse power rating per 10/1000 µs waveform - deployed in automotive lighting control modules to safeguard microcontroller I/O against load dump transients.
For engineers reviewing the P4KE82H datasheet, P4KE82H pinout, P4KE82H application, or P4KE82H equivalent, key selection criteria include clamping performance under 10/1000 µs surge, AEC-Q101 qualification status, DO-41 package compatibility with legacy PCB footprints, and leakage current <1 µA at 66.4 V - critical for low-power battery-backed systems and ESD-sensitive sensor interfaces.
Technical Context
The P4KE82H operates as a silicon avalanche diode, leveraging controlled reverse-biased breakdown to clamp transient voltages above its VWM while maintaining high impedance below that threshold. Its unidirectional polarity enables integration into DC-biased circuits where forward conduction must be blocked except during surge events.
It delivers sub-nanosecond response (<1.0 ps from 0 V to VBR) and low dynamic impedance, ensuring rapid energy diversion before downstream ICs experience overstress. The device is rated for 175 °C maximum junction temperature and supports operation from –55 °C to +175 °C, meeting under-hood automotive thermal requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 66.4 V - Maximum continuous DC or RMS voltage the device blocks without significant leakage; defines safe operating margin below clamping onset. |
| VBR @ 1 mA | 73.8 V (min) to 90.2 V (max) - Breakdown voltage range at test current; ensures consistent clamping initiation across production lots. |
| VC @ IPPM | 118 V at 3.5 A - Maximum voltage seen across terminals during 10/1000 µs surge; determines worst-case stress on protected ICs. |
| PPK | 400 W - Peak pulse power handling per standard 10/1000 µs waveform; validates robustness against ISO 7637-2 Pulse 1/2a/5a transients. |
| ID @ VWM | <1 µA - Reverse leakage at working voltage; critical for minimizing quiescent current in always-on automotive modules. |
| TJ max | +175 °C - Maximum junction temperature rating; enables placement near heat sources (e.g., power MOSFETs) without derating. |
| Package | DO-204AL (DO-41) - Industry-standard axial-leaded package with tin-plated leads; compatible with wave soldering and manual rework. |
Pinout & Package
DO-204AL (DO-41) package: axial-leaded, glass-passivated silicon junction, cathode indicated by band marking. Leads are pure tin-plated and solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to circuit ground or lowest potential node; completes clamping path during reverse surge. |
| Cathode | High-side surge input terminal | Connected to protected line (e.g., 12 V rail); avalanche conduction occurs when voltage exceeds VBR relative to anode. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and mechanical shock - required for engine control and body electronics. |
| 400 W surge capability | Withstands ISO 7637-2 Pulse 5a (load dump) up to 120 V/400 ms without degradation - eliminates need for external series impedance in many 12 V systems. |
| Clamping voltage ≤118 V | Limits stress on 100 V-rated CAN transceivers and 80 V logic ICs during transients - avoids overvoltage latch-up or gate oxide rupture. |
| Leakage <1 µA at 66.4 V | Enables use in always-on vehicle networks (e.g., LIN sleep mode) without compromising battery drain budgets. |
| Fast response <1.0 ps | Activates before most ESD events (IEC 61000-4-2) propagate through PCB traces - protects high-speed sensor inputs like ABS wheel speed signals. |
Applications
| Automotive Lighting Control | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting LED driver ICs and MOSFET gate drivers in headlamp modules subjected to alternator load dump (ISO 7637-2 Pulse 5a). IC Role / Device Role / Timing Role: Primary overvoltage clamp on 12 V supply rail; absorbs 400 W surge energy within 10/1000 µs window. Use Value: Prevents catastrophic failure of buck controller ICs during 120 V/400 ms transients - extends module lifetime beyond 15-year vehicle service life. |
Use Scenario: Safeguarding digital input channels of programmable logic controllers exposed to inductive kickback from solenoid valves. IC Role / Device Role / Timing Role: Unidirectional TVS placed between field input and optocoupler input stage. Use Value: Clamps 600 V spikes to ≤118 V within nanoseconds, preserving optocoupler CTR and preventing false triggering in safety-critical sequences. |
| ESD-Sensitive Sensor Interface | DC Power Rail Protection |
|
Use Scenario: Shielding automotive ambient light sensor outputs connected to MCU ADC pins against IEC 61000-4-2 ±8 kV contact discharge. IC Role / Device Role / Timing Role: Low-capacitance TVS (CJ ≈ 100 pF at 0 V) placed directly at connector entry point. Use Value: Limits ESD-induced voltage overshoot to <118 V while adding <0.5 ns propagation delay - maintains signal integrity for 100 kHz analog sensing bandwidth. |
Use Scenario: Secondary protection on 24 V industrial power supply output feeding motor drive logic boards. IC Role / Device Role / Timing Role: Standoff-rated TVS (VWM = 66.4 V) installed upstream of LDO regulators to absorb switching noise and lightning-induced surges. Use Value: Maintains regulator input voltage below absolute maximum rating (typically 36 V) even during 400 W transients - avoids brownout resets and firmware corruption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ85A | Surface-mount SMB package; 85 V standoff; 100 W rating (lower than P4KE82H's 400 W) | Used where board space is constrained and surge energy is limited to IEC 61000-4-5 Level 3 (0.5 kV) | Select SMBJ85A only if peak pulse power requirement is ≤100 W and SMT assembly is mandatory. |
| 1.5KE82A | Same DO-41 package; 82 V nominal; 1500 W rating but higher clamping voltage (137 V vs. 118 V) | Preferred for higher-energy transients (e.g., MIL-STD-1275E) where tighter clamping is less critical than energy absorption | Choose 1.5KE82A when system-level testing requires >400 W surge margin and 137 V clamping is acceptable for downstream components. |
Compared with SMBJ85A and 1.5KE82A, the P4KE82H uniquely balances 400 W surge capacity, 118 V clamping, and AEC-Q101 qualification in a through-hole DO-41 package - making it optimal for cost-sensitive, thermally demanding automotive modules requiring proven field reliability.
Availability
P4KE82H is available at Aetrix Electronics and suitable for automotive lighting control, industrial PLC I/O protection, ESD-sensitive sensor interface, and DC power rail protection requiring stable component supply and long-term lifecycle support.
Supply support for P4KE82H 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 - headquartered in Hsinchu Science Park, Taiwan.
The P4KE series belongs to TSC's AEC-Q101-qualified transient suppression portfolio, engineered specifically for automotive and industrial environments where robustness against load dump, ESD, and inductive switching transients is non-negotiable.
FAQ
What is the clamping voltage of the P4KE82H under a 10/1000 µs surge?
The P4KE82H has a maximum clamping voltage (VC) of 118 V at 3.5 A peak pulse current under the standardized 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and represents the highest voltage the device allows across its terminals during surge conduction - a critical parameter for ensuring protected ICs remain within their absolute maximum ratings. The P4KE82H achieves this while maintaining low dynamic impedance and sub-nanosecond response.
Is the P4KE82H suitable for automotive applications?
Yes, the P4KE82H is explicitly AEC-Q101 qualified, as indicated by the "H" suffix in its part number. It undergoes rigorous stress testing including temperature cycling, high-temperature reverse bias (HTRB), and mechanical shock - validating its suitability for under-hood and cabin applications such as body control modules, lighting drivers, and infotainment power supplies. Its –55 °C to +175 °C operating range further confirms automotive-grade thermal resilience.
What does the "H" suffix in P4KE82H signify?
The "H" suffix in P4KE82H denotes AEC-Q101 qualification - a globally recognized stress-test standard for discrete semiconductors used in automotive electronics. This designation confirms that the P4KE82H has passed accelerated reliability tests covering high-temperature operation, humidity resistance, and mechanical durability. It is not merely a packaging variant; the "H" version undergoes additional screening and lot-level validation beyond standard P4KE82 devices.
What is the maximum reverse leakage current of the P4KE82H at its working voltage?
The P4KE82H exhibits a maximum reverse leakage current (ID) of 1 µA at its working stand-off voltage (VWM) of 66.4 V, tested at 25 °C. This ultra-low leakage ensures minimal power loss in always-on systems such as vehicle telematics or smart sensor nodes. The specification is guaranteed across the full operating temperature range, supporting reliable performance in battery-powered applications where quiescent current directly impacts runtime.
Can the P4KE82H be used in bidirectional configurations?
No, the P4KE82H is a unidirectional TVS diode and is not rated for bidirectional operation. Its electrical characteristics - including breakdown voltage, clamping behavior, and polarity marking - apply only in reverse-biased mode. For bidirectional protection, Taiwan Semiconductor offers the P4KE82CA variant (with "CA" suffix), which provides symmetrical clamping in both directions. Using P4KE82H in AC or bipolar signal paths risks failure due to forward conduction during negative half-cycles.
P4KE82H 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):
- 66.4V
- Voltage - Breakdown (Min):
- 73.8V
- Voltage - Clamping (Max) @ Ipp:
- 118V
- Current - Peak Pulse (10/1000µs):
- 3.5A
- 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)
P4KE82H FAQ
1.How can I place an order for P4KE82H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE82H 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 P4KE82H reliable?
The price and inventory of P4KE82H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE82H is usually 5 days.
3.What payment methods are accepted for P4KE82H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE82H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE82H?
P4KE82H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE82H 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 P4KE82H?
For technical support, including P4KE82H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE82H requirements.
6.How does Aetrix verify that P4KE82H is sourced from the original manufacturer or authorized distributors?
All P4KE82H 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 P4KE82H meets industry standards.
7.What is the process for return or replacement of P4KE82H?
All P4KE82H units undergo pre-shipment inspection (PSI). If there is an issue with P4KE82H, 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 P4KE82H part is unused and in its original packaging.
Return procedure for P4KE82H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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