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Taiwan Semiconductor Corporation P4KE82CA
- Part No.:
- P4KE82CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE82CA.pdf
- Description:
- TVS DIODE 70.1VWM 113VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:7,238
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Product details
Overview
P4KE82CA from Taiwan Semiconductor is a bidirectional 400W transient voltage suppressor (TVS) diode designed for high-energy surge protection in DC power rails and signal lines. It features a nominal breakdown voltage of 82V, clamps transients to ≤113V at 3.7A peak pulse current, and operates across -55°C to +175°C with DO-204AL (DO-41) package - used in automotive body control modules, industrial PLC I/O protection, and PoE-powered device interfaces.
For engineers reviewing the P4KE82CA datasheet, P4KE82CA pinout, P4KE82CA application, or P4KE82CA equivalent, key selection criteria include bidirectional clamping capability, 10/1000μs waveform surge rating, low leakage (<1μA @ 66.4V), AEC-Q101 qualification, and compatibility with standard through-hole PCB assembly processes.
Technical Context
The P4KE82CA employs an avalanche-based silicon junction structure optimized for fast response (<5ns for bidirectional operation) and low dynamic impedance during transient events. Its bidirectional symmetry ensures identical clamping behavior in both polarities, eliminating need for polarity-aware layout.
It meets ANSI/IEEE C62.35 standards for non-repetitive surge testing and delivers stable VBR (77.9–86.1V) with ±5% tolerance under 1mA test current. Temperature coefficient of VBR is 0.105%/°C, enabling predictable derating over its full -55°C to +175°C operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Voltage | 82V - defines primary clamping threshold for system-level overvoltage protection |
| Breakdown Voltage VBR | 77.9–86.1V @ 1mA - ensures reliable avalanche initiation before damage to downstream ICs |
| Working Stand-off Voltage VWM | 70.1V - maximum continuous DC voltage the device blocks without leakage exceeding 1μA |
| Peak Pulse Power PPK | 400W @ 10/1000μs - sustains high-energy surges common in automotive load dump or inductive switching |
| Clamping Voltage VC | ≤113V @ 3.7A IPPM - limits voltage seen by protected circuit during worst-case transient |
| Junction Temperature Range | -55°C to +175°C - supports under-hood automotive and industrial environments without thermal derating loss |
| Package | DO-204AL (DO-41) - industry-standard through-hole package with tin-plated leads, UL 94V-0 molding |
Pinout & Package
DO-204AL (DO-41) package: axial-leaded, glass-passivated silicon junction, cathode band marking absent (bidirectional symmetry).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional avalanche junction terminals | No polarity distinction - either lead connects to protected line; enables flexible placement on PCB |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, lighting, and infotainment systems |
| 400W peak pulse power | Withstands ISO 7637-2 Pulse 5a (load dump) and IEC 61000-4-5 Level 4 surges without degradation |
| Fast bidirectional response | <5ns turn-on time ensures protection against ESD and electrical fast transients (EFT) per IEC 61000-4-4 |
| Low reverse leakage | <1μA @ 70.1V enables use in high-impedance sensor bias networks without signal error |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for environmentally regulated designs |
Applications
| Automotive Lighting Systems | Industrial PLC Digital I/O Protection |
|---|---|
Use Scenario: LED headlamp drivers exposed to battery load dump transients up to 120V. IC Role / Device Role / Timing Role: Bidirectional TVS placed across power input to clamp surges before they reach DC-DC controller and LED driver IC. Use Value: Prevents latch-up or gate oxide rupture in MOSFET drivers by limiting voltage to ≤113V during 400W pulses. |
Use Scenario: 24V digital input modules subjected to field-wiring induced surges and EFT bursts. IC Role / Device Role / Timing Role: Primary front-end protection on isolated input channel, shunting transients to ground before optocoupler or MCU GPIO. Use Value: Maintains signal integrity with <1μA leakage at 70.1V stand-off, avoiding false triggering in high-impedance sensing circuits. |
| Power over Ethernet (PoE) Powered Devices | Medical Diagnostic Equipment Interfaces |
Use Scenario: 48V DC power input of IP cameras or VoIP phones receiving IEEE 802.3af/at power. IC Role / Device Role / Timing Role: Secondary surge clamp after primary PoE controller, protecting PHY and DC-DC converter inputs. Use Value: Clamps induced lightning surges to ≤113V within 5ns, preventing damage to sensitive Ethernet PHY transceivers. |
Use Scenario: External sensor interface ports on ultrasound or patient monitor units exposed to ESD during clinical handling. IC Role / Device Role / Timing Role: ESD protection element on analog front-end connectors, placed before instrumentation amplifier inputs. Use Value: Provides <5ns response and <1μA leakage to preserve microvolt-level signal fidelity without adding offset or noise. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ85CA | 600W rating, SMC package (surface-mount), VBR = 94.4–104.4V, VC = 137V @ 4.4A | Higher power but larger footprint; requires rework for through-hole legacy designs | Select when board space allows SMT and higher surge margin is required beyond 400W |
| 1.5KE82CA | 1500W rating, DO-201AD package, VBR = 77.9–86.1V, VC = 137V @ 11A, slower thermal response | Over-specified power for most 400W use cases; larger axial package increases PCB area usage | Choose only when legacy 1.5KE footprint compatibility is mandatory and higher clamping voltage is acceptable |
Compared with SMBJ85CA and 1.5KE82CA, the P4KE82CA offers optimal balance of 400W surge capability, DO-41 through-hole compatibility, and tight 113V clamping - making it ideal for cost-sensitive, space-constrained, and automotive-qualified designs where precise voltage limiting is critical.
Availability
P4KE82CA is available at Aetrix Electronics and suitable for automotive lighting systems, industrial PLC I/O protection, Power over Ethernet (PoE) powered devices, and medical diagnostic equipment interfaces requiring stable component supply and AEC-Q101 compliance.
Supply support for P4KE82CA 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 - serving automotive, industrial, and consumer markets since 1979.
The P4KE series was developed for robust, cost-effective transient suppression in harsh environments, with emphasis on AEC-Q101 qualification, tight parameter distribution, and compatibility with automated through-hole assembly.
FAQ
What is the clamping voltage of P4KE82CA at its rated peak pulse current?
The P4KE82CA has a maximum clamping voltage (VC) of 113V at 3.7A peak pulse current (IPPM), measured under the standard 10/1000μs waveform. This value ensures protected circuits experience no more than 113V during a 400W transient event, directly supporting design margin calculations for downstream ICs such as MCUs and power controllers.
Is P4KE82CA unidirectional or bidirectional, and how is polarity identified?
The P4KE82CA is a bidirectional TVS diode - it provides symmetrical clamping in both forward and reverse directions, with no cathode band marking on the DO-41 package. This eliminates polarity concerns during placement and simplifies layout for AC-coupled or floating signal lines, unlike unidirectional variants (e.g., P4KE82A) which require correct anode/cathode orientation.
Does P4KE82CA meet AEC-Q101 requirements for automotive use?
Yes, the P4KE82CA is AEC-Q101 qualified, as confirmed in the ordering code suffix "H" (P4KE82CAH) and product documentation. It passes stress tests including temperature cycling, humidity bias, mechanical shock, and high-temperature reverse bias - validating its reliability in automotive under-hood and cabin applications such as body control modules and lighting drivers.
What is the maximum working stand-off voltage (VWM) for P4KE82CA?
The maximum working stand-off voltage (VWM) for P4KE82CA is 70.1V, meaning it reliably blocks voltages up to this level with reverse leakage current limited to ≤1μA. This value is derived from the 82V nominal rating and ensures safe operation in 60V nominal systems like 24V automotive or 48V PoE, providing ≥10% margin below breakdown onset.
How does P4KE82CA compare to P4KE82A in terms of electrical performance?
The P4KE82CA is bidirectional with symmetric VBR (77.9–86.1V) and VC (113V), while P4KE82A is unidirectional with lower VF (3.5V) but same VBR range. P4KE82CA's bidirectional nature makes it suitable for AC signal lines or floating DC buses, whereas P4KE82A is intended for polarity-defined DC rail protection - selecting between them depends strictly on circuit topology and surge directionality requirements.
P4KE82CA 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):
- 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)
P4KE82CA FAQ
1.How can I place an order for P4KE82CA through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE82CA 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 P4KE82CA reliable?
The price and inventory of P4KE82CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE82CA is usually 5 days.
3.What payment methods are accepted for P4KE82CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE82CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE82CA?
P4KE82CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE82CA 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 P4KE82CA?
For technical support, including P4KE82CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE82CA requirements.
6.How does Aetrix verify that P4KE82CA is sourced from the original manufacturer or authorized distributors?
All P4KE82CA 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 P4KE82CA meets industry standards.
7.What is the process for return or replacement of P4KE82CA?
All P4KE82CA units undergo pre-shipment inspection (PSI). If there is an issue with P4KE82CA, 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 P4KE82CA part is unused and in its original packaging.
Return procedure for P4KE82CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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