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Taiwan Semiconductor Corporation P6KE6.8
- Part No.:
- P6KE6.8
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE6.8.pdf
- Description:
- 600W, 6.8V, UNIDIRECTIONAL, TVS
- Quantity:
- Payment:
- Shipping:
Inventory:7,532
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Product details
Overview
P6KE6.8 from Taiwan Semiconductor is a unidirectional 600W transient voltage suppressor (TVS) diode designed for primary-side overvoltage clamping in low-voltage DC circuits. It features a 6.8V nominal breakdown voltage, 5.5V stand-off voltage, 10.8V maximum clamping voltage at 58A peak surge current, and <1.0ps response time - enabling protection of 5V logic rails, USB interfaces, and automotive body electronics against ESD and inductive switching transients.
For engineers reviewing the P6KE6.8 datasheet, P6KE6.8 pinout, P6KE6.8 application, or P6KE6.8 equivalent, key selection criteria include its DO-204AC (DO-15) axial package, unidirectional polarity, 1000μA max reverse leakage at 5.5V, and AEC-Q101 qualification eligibility (via H-suffix variants), making it suitable for automotive infotainment power inputs and industrial sensor signal conditioning.
Technical Context
The P6KE6.8 operates as a silicon avalanche diode with a single-die construction housed in a DO-204AC (DO-15) package. Its clamping action begins at VBR = 6.12–7.48V (tested at 10mA), limiting transient energy to ≤10.8V at 58A (10/1000μs waveform), while maintaining low dynamic impedance and <1μA leakage above 10V.
It is rated for junction temperatures from –55°C to +175°C, supports 100A non-repetitive forward surge (8.3ms half-sine), and complies with UL 94V-0 flammability and RoHS/halogen-free standards. Polarity is marked by a cathode band; no bidirectional functionality is supported in the base P6KE6.8 variant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Voltage | 6.8V - defines the nominal avalanche initiation point under standard test conditions |
| Stand-Off Voltage VWM | 5.5V - maximum continuous reverse voltage before significant leakage; sets safe operating margin below 5V rail |
| Breakdown Voltage VBR | 6.12–7.48V @ 10mA - actual conduction onset range; ensures reliable triggering without premature turn-on |
| Clamping Voltage VC | 10.8V @ 58A (10/1000μs) - peak voltage seen by protected circuit during worst-case surge |
| Peak Pulse Power PPK | 600W - energy-handling capacity for standardized lightning/inductive transients per IEC 61000-4-5 |
| Response Time | <1.0ps - enables suppression of ESD events (IEC 61000-4-2) before IC damage occurs |
| Reverse Leakage IR | <1000μA @ 5.5V - minimal quiescent power loss and signal integrity impact in standby |
Pinout & Package
Package: DO-204AC (DO-15), 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 (unmarked end) | Current sink during clamping | Connected to ground or low-impedance return path; carries full surge current during transient |
| Cathode (banded end) | Protected line connection | Connected to the line being protected (e.g., 5V supply); voltage referenced to anode during clamping |
Key Features
| Feature | Design Value |
|---|---|
| 600W surge rating (10/1000μs) | Supports robust protection against ISO 7637-2 pulse 1/2a/5a and IEC 61000-4-5 level 4 surges |
| <1.0ps response time | Prevents ESD-induced latch-up or gate oxide rupture in CMOS ICs per IEC 61000-4-2 |
| Low dynamic impedance | Ensures stable clamping voltage across varying surge currents - critical for predictable system-level protection |
| AEC-Q101 qualified option (P6KE6.8H) | Validated for automotive under-hood and cabin applications requiring extended temperature and reliability compliance |
| UL 94V-0 flammability rating | Meets safety requirements for enclosed industrial equipment and consumer power supplies |
Applications
| Automotive Body Control Module (BCM) Power Input | USB 2.0 Data Line Protection |
|---|---|
|
Use Scenario: Protecting 5V supply rail of BCM microcontroller from load dump and alternator ripple. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed between input fuse and LDO regulator. Use Value: Limits transient voltage to 10.8V, preventing regulator overvoltage shutdown and MCU brownout during 12V system surges. |
Use Scenario: Safeguarding USB PHY transceivers against ESD events on D+ and D− lines. IC Role / Device Role / Timing Role: Unidirectional TVS placed in series with each data line, grounded via short trace. Use Value: Sub-nanosecond response clamps ±8kV contact ESD (IEC 61000-4-2) below transceiver's absolute maximum rating. |
| Industrial PLC Digital Input Circuit | LED Driver Constant-Voltage Output Stage |
|
Use Scenario: Shielding optocoupler input stage from inductive kickback when switching 24V solenoids. IC Role / Device Role / Timing Role: TVS connected across optocoupler anode-cathode terminals. Use Value: Absorbs 600W surge energy while holding voltage ≤10.8V, preserving optocoupler CTR and lifetime. |
Use Scenario: Preventing overvoltage damage to LED strings during constant-current driver startup or fault conditions. IC Role / Device Role / Timing Role: Clamping device placed across LED output terminals, referenced to driver ground. Use Value: Limits open-circuit output voltage to 10.8V, avoiding LED junction overvoltage and catastrophic failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ6.8A | DO-214AA package; 600W rating; tighter VBR tolerance (6.46–7.14V); lower VC = 10.5V @ 58A | Surface-mount footprint; better suited for high-density PCBs where axial leads are impractical | Select SMBJ6.8A when board space is constrained and reflow assembly is preferred over through-hole mounting. |
| 1.5KE6.8A | Same DO-204AC package; higher 1500W rating; VBR = 6.46–7.14V; VC = 10.5V @ 123A | Higher surge capacity for severe environments (e.g., railway or heavy industrial mains coupling) | Choose 1.5KE6.8A only if system-level testing confirms need for >600W surge handling - otherwise P6KE6.8 offers optimal cost/performance balance. |
Compared with SMBJ6.8A and 1.5KE6.8A, the P6KE6.8 delivers identical protection performance in a cost-optimized, through-hole DO-204AC package - ideal for prototyping, low-volume industrial controls, and automotive aftermarket modules where manual assembly or serviceability is prioritized.
Availability
P6KE6.8 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC digital inputs, USB interface protection, and LED driver output clamping requiring stable component supply and long-term obsolescence management.
Supply support for P6KE6.8 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 signal conditioning devices.
The P6KE series was developed to deliver high-reliability, AEC-Q101-capable TVS diodes for automotive and industrial applications demanding robust transient immunity in compact axial packages.
FAQ
What is the polarity configuration of the P6KE6.8?
The P6KE6.8 is a unidirectional TVS diode with clearly marked cathode polarity (band). It conducts only in reverse bias during overvoltage events and must be installed with the banded end toward the protected line and the unmarked end toward ground. Bidirectional operation is not supported - use P6KE6.8C for symmetrical clamping.
Does the P6KE6.8 meet AEC-Q101 qualification?
The base P6KE6.8 is not AEC-Q101 qualified; however, the P6KE6.8H variant (same electrical specs, H-suffix) is fully AEC-Q101 qualified per Rev. P2203 documentation. This qualification covers temperature cycling, humidity testing, and mechanical shock - required for automotive under-hood and cabin applications.
What is the maximum clamping voltage of the P6KE6.8 under surge conditions?
The P6KE6.8 has a maximum clamping voltage VC of 10.8V when subjected to a 58A peak pulse current with a 10/1000μs waveform. This value is guaranteed across the full operating temperature range and defines the highest voltage the protected circuit will experience during a standardized surge event.
Can the P6KE6.8 be used in bidirectional signal line protection?
No - the P6KE6.8 is strictly unidirectional and lacks symmetrical breakdown characteristics. For bidirectional protection (e.g., RS-485, CAN bus, or AC lines), use the P6KE6.8C or P6KE6.8CA variant, which provides matched VBR in both directions and is explicitly designated for bipolar applications in the datasheet.
What is the thermal derating behavior of the P6KE6.8 above 25°C ambient?
The P6KE6.8's peak pulse power rating decreases linearly above 25°C ambient per Figure 2 in the datasheet: at 75°C, it retains ~70% of its 600W rating, and at 125°C, ~40%. Steady-state power dissipation is limited to 5W at 75°C with specified lead length and copper pad area - critical for sustained surge duty cycles.
P6KE6.8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- P6KE
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5.5V
- Voltage - Breakdown (Min):
- 6.12V
- Voltage - Clamping (Max) @ Ipp:
- 10.8V
- Current - Peak Pulse (10/1000µs):
- 58A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
P6KE6.8 FAQ
1.How can I place an order for P6KE6.8 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE6.8 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 P6KE6.8 reliable?
The price and inventory of P6KE6.8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE6.8 is usually 5 days.
3.What payment methods are accepted for P6KE6.8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE6.8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE6.8?
P6KE6.8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE6.8 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 P6KE6.8?
For technical support, including P6KE6.8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE6.8 requirements.
6.How does Aetrix verify that P6KE6.8 is sourced from the original manufacturer or authorized distributors?
All P6KE6.8 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 P6KE6.8 meets industry standards.
7.What is the process for return or replacement of P6KE6.8?
All P6KE6.8 units undergo pre-shipment inspection (PSI). If there is an issue with P6KE6.8, 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 P6KE6.8 part is unused and in its original packaging.
Return procedure for P6KE6.8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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