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Taiwan Semiconductor Corporation P4KE8.2CH
- Part No.:
- P4KE8.2CH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE8.2CH.pdf
- Description:
- 400W, 8.2V, BIDIRECTIONAL, TVS
- Quantity:
- Payment:
- Shipping:
Inventory:6,547
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Product details
Overview
P4KE8.2CH from Taiwan Semiconductor is a unidirectional transient voltage suppressor diode (TVS) designed for primary-level 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 lighting control modules to safeguard microcontroller I/O against load-dump transients.
For engineers reviewing the P4KE8.2CH datasheet, P4KE8.2CH pinout, P4KE8.2CH application, or P4KE8.2CH equivalent, key selection criteria include clamping voltage margin relative to protected IC VDD, leakage current at operating bias, thermal derating above 25°C, and AEC-Q101 qualification status for under-hood deployment.
Technical Context
The P4KE8.2CH 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 enables rapid voltage clamping during fast-rising transients, with sub-nanosecond response time (<1.0ps from 0V to VBR) ensuring protection before sensitive downstream circuitry sustains damage.
Rated for 175°C maximum junction temperature and housed in DO-204AL (DO-41) package, it supports lead-free soldering per J-STD-002 and passes JESD201 Class 2 whisker testing. The "H" suffix confirms AEC-Q101 qualification, validating reliability for automotive-grade surge immunity per ISO 7637-2 and IEC 61000-4-5.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Voltage | 8.2V - defines rated standoff level before avalanche conduction begins |
| Breakdown Voltage VBR | 7.38–9.02V @ 10mA - ensures reliable triggering within defined tolerance band |
| Working Stand-off Voltage VWM | 6.63V - maximum continuous reverse voltage without significant leakage |
| Clamping Voltage VC | 12.5V @ 33A - limits peak voltage seen by protected circuit during 10/1000μs surge |
| Peak Pulse Power PPK | 400W - sustains single 10/1000μs transient without failure |
| Reverse Leakage ID | <200μA @ 6.63V - minimizes standby power loss in battery-powered systems |
| Junction Temperature Range | −55°C to +175°C - enables operation in engine compartment and industrial environments |
Pinout & Package
Package: DO-204AL (DO-41), axial-leaded, epoxy-molded case with cathode band marking for unidirectional polarity. Leads are pure tin-plated and compliant with RoHS and halogen-free standards (IEC 61249-2-21).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Ground reference terminal | Connected to system ground or low-side return path; conducts forward surge current up to 40A |
| Cathode | Protected line input | Connected to line under protection (e.g., 5V rail); blocks reverse current until VBR exceeded |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics |
| 400W surge capability | Withstands ISO 7637-2 Pulse 5a (load dump) without degradation |
| Clamping voltage ≤12.5V | Provides ≥1.5V margin below typical 13.5V automotive supply peaks |
| Leakage <200μA @ VWM | Enables use in always-on circuits without excessive quiescent current drain |
| UL Recognized #E-326243 | Meets safety requirements for end-equipment certification in North America |
Applications
| Automotive Lighting Control | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting LED driver ICs from inductive kickback during headlamp switching. IC Role / Device Role / Timing Role: Primary clamping device on 12V supply rail upstream of buck controller. Use Value: Limits transient voltage to 12.5V, preventing latch-up or gate oxide damage in MOSFET drivers. |
Use Scenario: Safeguarding digital input optocouplers in programmable logic controllers exposed to field wiring surges. IC Role / Device Role / Timing Role: First-line defense against EFT bursts (IEC 61000-4-4) on 24V DC inputs. Use Value: Sub-ns response ensures clamping occurs before optocoupler CMTI threshold is exceeded. |
| USB-C Power Delivery Port | Smart Meter Communication Interface |
Use Scenario: Suppressing voltage spikes induced on VBUS line during hot-plug events or cable disconnects. IC Role / Device Role / Timing Role: Unidirectional TVS placed between USB-C connector and PD controller's VBUS monitor pin. Use Value: 6.63V VWM allows full 5–20V PD range operation while clamping to 12.5V during 400W surges. |
Use Scenario: Shielding RS-485 transceivers in utility meters from lightning-induced surges on long outdoor data lines. IC Role / Device Role / Timing Role: Line-to-ground TVS on differential pair, paired with common-mode choke. Use Value: 175°C TJ rating supports extended operation inside sealed meter enclosures with minimal airflow. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ8.0A | 8.0V nominal, 6.4V VWM, 12.5V VC @ 32.8A, SMA package | Surface-mount only; lacks AEC-Q101 qualification | Select for space-constrained PCBs where through-hole mounting is impractical |
| Vishay 1.5KE8.2C | Bidirectional variant, same VBR range, DO-201 package, 1.5kW rating | Supports AC-coupled or bidirectional signal lines; higher power but larger footprint | Choose when protecting symmetric interfaces like CAN or RS-232 where polarity reversal may occur |
Compared with SMAJ8.0A and 1.5KE8.2C, the P4KE8.2CH offers AEC-Q101 validation and DO-41 through-hole robustness ideal for high-vibration automotive harness connections, while maintaining identical clamping performance at lower cost than 1.5kW alternatives.
Availability
P4KE8.2CH is available at Aetrix Electronics and suitable for automotive lighting systems, industrial PLC I/O modules, and smart meter communication interfaces requiring stable component supply with guaranteed long-term sourcing.
Supply support for P4KE8.2CH 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 analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in power management, protection, and interface devices.
The P4KE series belongs to TSC's automotive-qualified TVS portfolio, engineered specifically for robust transient immunity in harsh environments - targeting ISO 16750-2 and ISO 7637-2 compliance in vehicle subsystems.
FAQ
What is the meaning of the 'H' suffix in P4KE8.2CH?
The "H" suffix in P4KE8.2CH indicates full AEC-Q101 qualification, confirming that the device has passed stress tests for temperature cycling, humidity bias, mechanical shock, and high-temperature operating life required for automotive electronics. This makes P4KE8.2CH suitable for under-hood and chassis-mounted applications where reliability under thermal and vibration stress is critical.
Does P4KE8.2CH support bidirectional transient suppression?
No, P4KE8.2CH is a unidirectional TVS diode, intended for DC line protection with defined polarity (cathode toward protected circuit). For bidirectional protection, TSC offers the P4KE8.2C variant - which shares identical voltage ratings but conducts in both directions. Using P4KE8.2CH on AC or polarity-agnostic lines risks failure during negative transients.
What is the maximum clamping voltage of P4KE8.2CH and at what current is it specified?
The maximum clamping voltage of P4KE8.2CH is 12.5V, measured at 33A peak pulse current under the standard 10/1000μs double-exponential waveform. This value represents the worst-case voltage imposed on the protected circuit during a 400W transient event and must be compared directly against the absolute maximum ratings of downstream ICs.
Can P4KE8.2CH replace P4KE8.2A in an existing design?
Yes, P4KE8.2CH can replace P4KE8.2A electrically - both share identical breakdown (7.79–8.61V), clamping (12.1V), and power (400W) specifications - but P4KE8.2CH adds AEC-Q101 qualification and green compound marking. No layout or schematic changes are needed, though qualification documentation should be updated to reflect automotive-grade validation.
What is the thermal resistance junction-to-ambient for P4KE8.2CH in DO-41 package?
The P4KE8.2CH in DO-204AL (DO-41) package has a typical junction-to-ambient thermal resistance (RθJA) of 100°C/W when mounted on FR-4 board with minimum copper pads. Derating curves in the datasheet show 1W steady-state power dissipation at 75°C lead temperature, requiring thermal design consideration for sustained surge repetition or high ambient temperatures.
P4KE8.2CH 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):
- 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)
P4KE8.2CH FAQ
1.How can I place an order for P4KE8.2CH through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE8.2CH 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 P4KE8.2CH reliable?
The price and inventory of P4KE8.2CH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE8.2CH is usually 5 days.
3.What payment methods are accepted for P4KE8.2CH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE8.2CH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE8.2CH?
P4KE8.2CH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE8.2CH 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 P4KE8.2CH?
For technical support, including P4KE8.2CH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE8.2CH requirements.
6.How does Aetrix verify that P4KE8.2CH is sourced from the original manufacturer or authorized distributors?
All P4KE8.2CH 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 P4KE8.2CH meets industry standards.
7.What is the process for return or replacement of P4KE8.2CH?
All P4KE8.2CH units undergo pre-shipment inspection (PSI). If there is an issue with P4KE8.2CH, 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 P4KE8.2CH part is unused and in its original packaging.
Return procedure for P4KE8.2CH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4KE8.2CH Tags
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