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Taiwan Semiconductor Corporation P6KE68
- Part No.:
- P6KE68
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE68.pdf
- Description:
- 600W, 68V, UNIDIRECTIONAL, TVS
- Quantity:
- Payment:
- Shipping:
Inventory:7,073
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Product details
Overview
P6KE68 from Taiwan Semiconductor is a unidirectional 600W transient voltage suppressor (TVS) diode designed for primary overvoltage protection in DC power rails and signal lines. It features a nominal breakdown voltage of 68 V, clamps transients to ≤98.0 V at 6.4 A peak surge current, and delivers fast response (<1.0 ps from 0 V to VBR), with stand-off voltage of 55.1 V and leakage <1 μA at rated VWM. It is widely deployed in automotive body electronics and industrial power supply input stages.
For engineers reviewing the P6KE68 datasheet, P6KE68 pinout, P6KE68 application, or P6KE68 equivalent, key selection criteria include its DO-204AC (DO-15) axial package, unidirectional polarity marking, 600 W 10/1000 µs surge rating, and AEC-Q101 qualification path - critical for automotive-grade ESD and load-dump immunity design.
Technical Context
The P6KE68 operates as a silicon avalanche diode optimized for clamping high-energy transients while maintaining low dynamic impedance and minimal leakage. Its junction structure enables sub-nanosecond turn-on and stable breakdown across -55°C to +175°C operating range, with temperature coefficient of VBR at 0.104 %/°C.
It is rated for non-repetitive 600 W peak pulse power per 10/1000 µs waveform, derates linearly above 25°C ambient, and supports up to 100 A forward surge (8.3 ms half-sine) in unidirectional configuration. Polarity is marked by cathode band; no internal series resistance or integrated filtering is present.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Voltage | 68 V - defines the approximate DC standoff threshold before avalanche conduction begins |
| Breakdown Voltage VBR | 61.2–74.8 V @ 1 mA - guaranteed conduction onset range under standardized test conditions |
| Stand-off Voltage VWM | 55.1 V - maximum continuous reverse voltage without significant leakage (≤1 μA) |
| Clamping Voltage VC | 98.0 V @ 6.4 A - peak voltage seen by protected circuit during full-rated 10/1000 µs surge |
| Peak Pulse Power PPK | 600 W - energy-handling capability under standard 10/1000 µs transient waveform |
| Junction Temperature Range | -55°C to +175°C - enables use in under-hood automotive and industrial environments |
| Package | DO-204AC (DO-15) - axial-leaded, UL 94V-0 molded case with tin-plated leads |
Pinout & Package
Package: DO-204AC (DO-15), axial leaded, cathode indicated by band. Leads are pure tin-plated and solderable per J-STD-002. Weight ≈ 0.400 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or lower-potential rail; forms clamping path when cathode is at higher potential |
| Cathode | High-side transient input terminal | Marked by band; connects to protected line (e.g., 12 V battery rail); conducts avalanche current to anode during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| Surge robustness | 600 W peak pulse power (10/1000 µs) - withstands ISO 7637-2 Load Dump Pulse 5a without failure |
| Response speed | <1.0 ps turn-on from 0 V to VBR - limits voltage overshoot during fast ESD or EFT events |
| Leakage control | <1 μA @ 55.1 V - avoids excessive quiescent current in always-on automotive modules |
| Thermal resilience | 175°C max junction temperature - supports placement near heat sources in engine control units |
| Material compliance | RoHS-compliant and halogen-free per IEC 61249-2-21 - meets automotive environmental requirements |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protecting microcontroller GPIO and CAN transceiver power pins from battery line transients during load dump or jump-start events. IC Role / Device Role: Primary clamping device on 12 V supply rail upstream of LDO regulators. Use Value: Limits rail voltage to ≤98.0 V during 600 W surges, preventing latch-up or permanent damage to downstream ICs. |
Use Scenario: Safeguarding 24 V digital input channels against induced surges from relay coil switching or nearby motor drives. IC Role / Device Role: Front-end transient absorber before optocoupler or Schmitt trigger input stage. Use Value: Clamps 10/1000 µs transients to safe levels while maintaining <1 μA leakage at 24 V nominal operation. |
| LED Driver Power Supply Input | Telecom Line Interface Protection |
Use Scenario: Shielding constant-current LED driver ICs from inductive kickback when AC/DC adapter is disconnected abruptly. IC Role / Device Role: Unidirectional TVS placed between rectified output and bulk capacitor. Use Value: Absorbs 600 W energy without degradation, preserving driver IC reliability over >100,000 cycles. |
Use Scenario: Guarding RS-485 transceivers connected to long outdoor wiring exposed to lightning-induced surges. IC Role / Device Role: First-stage protection on VCC and signal lines, coordinated with GDT and series impedance. Use Value: Fast clamping (≤1 ps) reduces let-through voltage to transceiver's absolute maximum rating margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ64A | 64 V standoff, 6.5 A IPP, SMC package (surface-mount), 600 W rating | Requires PCB rework for SMD layout; better thermal dissipation in high-density designs | Select when board space is constrained and automated assembly is preferred over through-hole |
| 1.5KE68A | Same 68 V rating, 1500 W rating, DO-201AD package, higher surge capacity but larger footprint | Used where higher single-event energy tolerance is required (e.g., alternator load dump simulation) | Select when legacy 1.5 kW surge testing or MIL-STD-1275 compliance is mandated |
Compared with SMBJ64A and 1.5KE68A, the P6KE68 offers optimal balance of axial through-hole manufacturability, AEC-Q101 qualification path, and 600 W surge handling in compact DO-15 form - making it ideal for cost-sensitive, high-volume automotive and industrial power entry designs.
Availability
P6KE68 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC input protection, and LED driver power supply designs requiring stable component supply and long-term lifecycle support.
Supply support for P6KE68 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, serving global automotive, industrial, and consumer markets since 1979.
The P6KE68 belongs to TSC's P6KE series of high-reliability TVS diodes engineered specifically for automotive-grade transient immunity - emphasizing AEC-Q101 readiness, tight parametric distribution, and robust surge endurance in harsh environments.
FAQ
What is the polarity configuration of the P6KE68?
The P6KE68 is a unidirectional TVS diode with cathode indicated by a band on the DO-204AC (DO-15) package. It conducts avalanche current only when cathode voltage exceeds anode voltage by ≥61.2 V. This configuration makes P6KE68 suitable for DC rail protection where polarity is fixed, unlike bidirectional variants such as P6KE68CA.
Does the P6KE68 meet AEC-Q101 qualification standards?
The base P6KE68 is not AEC-Q101 qualified; however, the P6KE68H variant (with "H" suffix) is explicitly AEC-Q101 qualified per the manufacturer's ordering information. P6KE68H shares identical electrical specs and DO-15 packaging but undergoes additional stress testing for automotive under-hood applications. Always verify the full part number suffix when specifying for automotive use.
What is the maximum clamping voltage of the P6KE68 under rated surge conditions?
The P6KE68 clamps to a maximum of 98.0 V when subjected to its rated 6.4 A peak surge current (IPP) under the standard 10/1000 µs waveform. This value is measured at TA = 25°C and defines the upper voltage limit imposed on protected circuitry during worst-case transient events.
Can the P6KE68 be used in bidirectional signal line protection?
No - the P6KE68 is strictly unidirectional and lacks symmetrical breakdown in reverse bias. For bidirectional protection (e.g., RS-485, USB, or AC-coupled lines), select the P6KE68CA variant, which provides matched 61.2–74.8 V breakdown in both directions and uses the same DO-15 package with center-tap or dual-diode construction.
How does the P6KE68 compare to the 1N6267A in terms of performance and footprint?
The P6KE68 and 1N6267A share identical DO-204AC (DO-15) packaging and 68 V nominal rating, but P6KE68 offers tighter VBR tolerance (61.2–74.8 V vs. 64.6–71.4 V for 1N6267A), lower clamping voltage (98.0 V vs. 103 V), and explicit AEC-Q101 qualification path via P6KE68H. Both are drop-in replacements electrically and mechanically.
P6KE68 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):
- 55.1V
- Voltage - Breakdown (Min):
- 61.2V
- Voltage - Clamping (Max) @ Ipp:
- 98V
- Current - Peak Pulse (10/1000µs):
- 6.4A
- Power - Peak Pulse:
- 600W
- 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-204AC (DO-15)
P6KE68 FAQ
1.How can I place an order for P6KE68 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE68 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 P6KE68 reliable?
The price and inventory of P6KE68 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE68 is usually 5 days.
3.What payment methods are accepted for P6KE68?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE68 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE68?
P6KE68 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE68 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 P6KE68?
For technical support, including P6KE68 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE68 requirements.
6.How does Aetrix verify that P6KE68 is sourced from the original manufacturer or authorized distributors?
All P6KE68 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 P6KE68 meets industry standards.
7.What is the process for return or replacement of P6KE68?
All P6KE68 units undergo pre-shipment inspection (PSI). If there is an issue with P6KE68, 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 P6KE68 part is unused and in its original packaging.
Return procedure for P6KE68:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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