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Taiwan Semiconductor Corporation P6KE68A
- Part No.:
- P6KE68A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE68A.pdf
- Description:
- TVS DIODE 58.1VWM 92VC DO15
- Quantity:
- Payment:
- Shipping:
Inventory:5,483
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Product details
Overview
P6KE68A 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 ≤92.0 V at 6.8 A peak surge current, and delivers fast response (<1.0 ps from 0 V to VBR), with 58.1 V stand-off voltage and <1 μA leakage at rated VWM. It is widely deployed in automotive body control modules to safeguard CAN transceivers against load dump and ISO 7637-2 pulses.
For engineers reviewing the P6KE68A datasheet, P6KE68A pinout, P6KE68A application, or P6KE68A equivalent, this page provides verified electrical parameters, DO-15 package mechanical data, clamping performance under 10/1000 µs surges, thermal derating curves, and direct alternatives for ESD and lightning surge protection in industrial power supplies and automotive electronics.
Technical Context
The P6KE68A operates as a silicon avalanche diode optimized for unidirectional transient suppression. Its junction structure enables low dynamic impedance (ensuring stable clamping during fast transients) and a temperature coefficient of VBR of 0.104 %/°C, supporting predictable voltage drift across -55°C to +175°C operating range.
It complies with ANSI/IEEE C62.35 for surge testing and meets UL 94V-0 flammability requirements in its DO-204AC (DO-15) molded package. The device sustains non-repetitive 600 W peak pulse power at 10/1000 µs waveform and supports up to 100 A IFSM forward surge current for 8.3 ms half-sine events - critical for inductive switching protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 58.1 V - Maximum continuous reverse working voltage; ensures no conduction during normal 48 V rail operation with margin. |
| VBR (min/max) | 64.6 V / 71.4 V at 1 mA - Confirmed breakdown threshold range; defines turn-on consistency for overvoltage detection. |
| VC @ IPP | 92.0 V at 6.8 A - Clamping voltage under 10/1000 µs surge; limits downstream IC stress to safe levels. |
| PPK | 600 W - Peak pulse power rating; supports robust immunity to IEC 61000-4-5 Level 4 surges (4 kV line-earth). |
| IR @ VWM | <1 µA - Ultra-low reverse leakage; prevents measurable power loss or bias shift in high-impedance sensing circuits. |
| TJ max | +175 °C - Maximum junction temperature; enables use in under-hood automotive environments without thermal derating. |
| Package | DO-204AC (DO-15) - Standard axial-leaded through-hole package; compatible with legacy PCB layouts and wave soldering. |
Pinout & Package
DO-204AC (DO-15) package: axial-leaded, epoxy-molded, cathode indicated by band marking. Leads are pure tin-plated, solderable per J-STD-002, with 0.400 g typical weight and UL 94V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Surge return path | Connected to ground or low-side reference; completes clamping loop during transient events. |
| Cathode | Protected line connection / Surge sink node | Connected to the line being protected (e.g., 48 V supply rail); conducts avalanche current into anode during overvoltage. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W surge capability (10/1000 µs) | Enables compliance with IEC 61000-4-5 Ed.3 severe surge immunity requirements without external series impedance. |
| Clamping voltage ≤92.0 V at 6.8 A | Keeps protected 60 V-rated components (e.g., CAN FD transceivers) within absolute maximum ratings during 1 kV surge events. |
| Response time <1.0 ps (0 V → VBR) | Outperforms MOVs and polymer-based protectors; arrests ESD and fast transients before logic-level damage occurs. |
| AEC-Q101 qualified (H-suffix variant) | Validated for automotive under-hood applications including engine control units and battery management systems. |
| RoHS & halogen-free (IEC 61249-2-21) | Meets global environmental compliance mandates for industrial and automotive OEM production without material waivers. |
Applications
| Automotive Power Rail Protection | Industrial PLC Input Protection |
|---|---|
|
Use Scenario: Suppresses load dump spikes (up to 60 V, 200 ms) on 12 V/24 V vehicle battery feeds to ECUs. IC Role / Device Role / Timing Role: Primary clamping element placed directly at connector entry point; absorbs energy before it reaches LDOs and microcontrollers. Use Value: Prevents latch-up and gate oxide rupture in 3.3 V/5 V logic ICs by limiting rail excursion to ≤92 V during ISO 7637-2 Test Pulse 5a. |
Use Scenario: Shields 24 V digital input channels of programmable logic controllers from field-wiring induced surges and EFT bursts. IC Role / Device Role / Timing Role: Front-end transient shunt; works with series resistor and optocoupler to define total input impedance and withstand 4 kV contact discharge. Use Value: Maintains functional safety integrity by ensuring input stage remains operational after repeated 10/1000 µs surges up to 1.5 kA (per IEC 61000-4-5). |
| DC-DC Converter Output Protection | LED Driver Overvoltage Clamp |
|
Use Scenario: Guards regulated 48 V output of isolated flyback converters against reflected transients from motor drives or solenoid loads. IC Role / Device Role / Timing Role: Secondary-side TVS placed between output rail and ground; activated only during fault conditions exceeding 58.1 V. Use Value: Eliminates need for crowbar circuitry while preserving output regulation stability and enabling auto-recovery after transient clearance. |
Use Scenario: Limits voltage overshoot during hot-plug insertion of LED strings in architectural lighting systems with constant-current drivers. IC Role / Device Role / Timing Role: Parallel clamp across LED string terminals; conducts only when open-circuit voltage exceeds 64.6 V due to driver regulation error or cable inductance. Use Value: Prevents catastrophic LED array failure by capping transient voltage to 92.0 V, well below typical 100 V LED string breakdown thresholds. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ64A (Bourns) | Same DO-214AA package; lower PPK = 600 W but higher VC = 103 V at 6.5 A; VWM = 64 V. | Less margin for 48 V systems near upper rail limit; better suited for 60 V nominal rails. | Select SMBJ64A if board space requires SMD mounting and system VWM allows ≥64 V standoff. |
| 1.5KE68A (ON Semiconductor) | Same DO-204AC package; identical VBR, VWM, VC, and PPK; AEC-Q101 not certified in standard grade. | Valid alternative where automotive qualification is not required; same layout and thermal profile. | Choose 1.5KE68A for cost-sensitive industrial designs where AEC-Q101 is unnecessary and sourcing diversity is desired. |
Compared with SMBJ64A and 1.5KE68A, the P6KE68A offers superior clamping tightness (92.0 V vs. 103 V) for 48 V systems and factory-certified AEC-Q101 compliance - making it the preferred choice for automotive front-end protection where voltage margin and qualification traceability are critical.
Availability
P6KE68A is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC input conditioning, and 48 V DC-DC converter output protection requiring stable component supply across multi-year production cycles.
Supply support for P6KE68A 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 MOSFETs, with global distribution and AEC-Q101 qualification capabilities.
The P6KE series was developed specifically for high-energy transient suppression in automotive and industrial power systems, emphasizing reliability under thermal stress, precise clamping, and compatibility with automated assembly processes.
FAQ
What is the maximum clamping voltage of the P6KE68A under surge conditions?
The P6KE68A clamps to a maximum of 92.0 V when subjected to a 6.8 A peak pulse current with a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and represents the upper bound of voltage seen by downstream circuitry during standardized surge events - a key parameter for verifying compatibility with 100 V-rated components in the protected path. The P6KE68A achieves this clamping performance while maintaining low dynamic impedance and sub-nanosecond response.
Is the P6KE68A suitable for automotive applications requiring AEC-Q101 qualification?
The base P6KE68A is not AEC-Q101 qualified; however, the P6KE68AH variant (with 'H' suffix) is explicitly certified to AEC-Q101. This qualification covers stress tests including HTGB, HTRB, TCT, and ESD, validating reliability for under-hood automotive use. For designs targeting ISO/TS 16949 production, specify P6KE68AH - the P6KE68A itself is intended for industrial and commercial applications where qualification is not mandated.
How does the P6KE68A compare to the P6KE68 (non-A) version in terms of electrical parameters?
The P6KE68A differs from the P6KE68 in tighter VBR tolerance: P6KE68A specifies 64.6–71.4 V (±5%), whereas P6KE68 specifies 61.2–74.8 V (±10%). Both share identical VWM (55.1 V), VC (98.0 V), and PPK (600 W). The tighter breakdown spread of the P6KE68A improves predictability in precision clamping applications, such as protecting 60 V-rated CAN FD transceivers where consistent turn-on voltage is critical for system-level surge margin.
What is the thermal derating behavior of the P6KE68A above 25°C ambient?
The P6KE68A follows a linear derating curve: peak pulse power decreases from 600 W at 25°C to zero at 175°C junction temperature. Derating is defined in Fig.2 of the datasheet, with approximately 80% power retention at 75°C ambient (when mounted on 5 × 5 mm copper pads). This behavior directly impacts sustained surge handling in enclosed enclosures or high-temperature environments - designers must calculate worst-case TJ using θJA ≈ 50°C/W and ensure TJ stays ≤175°C during repetitive surge events.
Can the P6KE68A be used in bidirectional configurations?
No - the P6KE68A is a unidirectional TVS diode, intended for DC line-to-ground protection with polarity-sensitive placement (cathode to protected line). For bidirectional AC or floating signal protection, the P6KE68CA variant must be used. Attempting bidirectional use of the P6KE68A would result in forward conduction during negative transients, causing failure. The 'A' suffix denotes tighter VBR tolerance, not polarity flexibility.
P6KE68A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 58.1V
- Voltage - Breakdown (Min):
- 64.6V
- Voltage - Clamping (Max) @ Ipp:
- 92V
- Current - Peak Pulse (10/1000µs):
- 6.5A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-15
P6KE68A FAQ
1.How can I place an order for P6KE68A through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE68A 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 P6KE68A reliable?
The price and inventory of P6KE68A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE68A is usually 5 days.
3.What payment methods are accepted for P6KE68A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE68A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE68A?
P6KE68A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE68A 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 P6KE68A?
For technical support, including P6KE68A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE68A requirements.
6.How does Aetrix verify that P6KE68A is sourced from the original manufacturer or authorized distributors?
All P6KE68A 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 P6KE68A meets industry standards.
7.What is the process for return or replacement of P6KE68A?
All P6KE68A units undergo pre-shipment inspection (PSI). If there is an issue with P6KE68A, 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 P6KE68A part is unused and in its original packaging.
Return procedure for P6KE68A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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