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onsemi P6KE6.8A
- Part No.:
- P6KE6.8A
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- T-18, Axial
- Datasheet:
-
P6KE6.8A.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:9,282
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Product details
Overview
P6KE6.8A from ON Semiconductor is a unidirectional transient voltage suppressor (TVS) diode designed for parallel protection of DC power rails and signal lines against ESD, lightning-induced surges, and inductive switching transients. It features a 5.8 V working peak reverse voltage (VRWM), 6.8 V nominal breakdown voltage (VBR), 10.5 V clamping voltage (VC) at 57 A peak pulse current (IPP), and 600 W peak pulse power rating per 1 ms waveform.
For engineers reviewing the P6KE6.8A datasheet, pinout, applications, or equivalent options, key selection criteria include clamping performance under 57 A surge, low leakage (<1000 µA @ VRWM), sub-1 ns response time, UL 497B recognition for isolated loop circuits, and axial Surmetic-40 package compatibility with through-hole PCB assembly.
Technical Context
The P6KE6.8A operates as a voltage-clamping device in avalanche breakdown mode, triggered when transient voltage exceeds its 6.45–7.14 V breakdown range at 1 mA test current. Its unidirectional polarity requires cathode connection to the protected line and anode to ground, enabling precise overvoltage suppression without forward conduction during normal operation.
Thermal design relies on junction-to-lead thermal resistance of 20 °C/W and steady-state power dissipation of 5.0 W at 25 °C lead temperature, derating linearly above 50 °C. The device sustains 100 A non-repetitive forward surge current (IFSM) per 8.3 ms half-sine wave, supporting robust protection in industrial power supply and motor control interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 5.8 V - Maximum continuous reverse operating voltage before clamping begins; sets minimum system DC rail compatibility. |
| VBR @ IT=1 mA | 6.45–7.14 V - Breakdown tolerance window ensures reliable turn-on across temperature and unit variation. |
| VC @ IPP=57 A | 10.5 V - Clamped voltage during worst-case 1 ms surge; defines maximum stress on downstream ICs. |
| PPK | 600 W - Peak pulse power handling per non-repetitive 1 ms waveform per Figure 4; validates surge immunity level. |
| IR @ VRWM | 1000 µA - Reverse leakage at rated working voltage; low enough to avoid loading 5 V logic or sensor references. |
| Response Time | <1 ns - Avalanche turn-on speed limits voltage overshoot during fast transients like ESD contact discharge. |
| UL Recognition | UL 497B QVGQ2 - Certified for isolated loop circuit protection; satisfies safety compliance in telecom and medical equipment. |
Pinout & Package
Package: Surmetic-40 axial-leaded plastic case (Case 017AA), void-free thermosetting material, Pb-free available (P6KE6.8AG), cathode indicated by band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Ground reference terminal | Connected to system ground plane; completes clamping path during transient events. |
| Cathode | Protected line terminal | Connected to the voltage rail or signal line requiring protection; receives full clamping action. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Supports IEC 61000-4-5 Level 4 (4 kV line-earth) surge testing in AC/DC power inputs. |
| Clamping voltage ≤10.5 V @ 57 A | Protects 5 V TTL/CMOS logic and microcontroller I/O pins from destructive overvoltage. |
| ESD rating >16 kV HBM | Meets IEC 61000-4-2 Level 4 (8 kV contact / 15 kV air) without external pre-filtering. |
| UL 497B certified | Validates suitability for primary-side protection in isolated telecom/data interface circuits. |
| Sub-1 ns response time | Minimizes voltage overshoot during nanosecond-scale ESD events on high-speed data lines. |
Applications
| Industrial Power Supply Protection | Medical Equipment Input Protection |
|---|---|
Use Scenario: DC input stage of DIN-rail mounted 24 V power supplies exposed to load dump and inductive kickback in factory automation systems. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed directly across input terminals to limit surge voltage before upstream rectifier and bulk capacitor. Use Value: Limits transient voltage to ≤10.5 V during 57 A surges, preventing damage to bridge rectifiers and electrolytic capacitors rated for 35 V. | Use Scenario: Patient-connected analog front-end inputs in portable ECG monitors subjected to ESD per IEC 60601-1-2. IC Role / Device Role / Timing Role: First-line protection on isolated sensor input traces, positioned immediately after connector to shunt energy before isolation barrier. Use Value: UL 497B certification confirms compliance for isolated loop protection; 16 kV HBM rating eliminates need for secondary ESD components. |
| Telecom Line Interface Protection | PLC Digital I/O Module Protection |
Use Scenario: RS-485 transceiver bus lines in outdoor base station controllers exposed to lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Bidirectional protection not required; unidirectional P6KE6.8A used on VCC-supplied bias lines feeding termination resistors. Use Value: 600 W rating handles induced surges up to 100 A (derated); axial package allows manual rework and high-voltage creepage spacing (>5 mm). | Use Scenario: 24 V digital input channels in programmable logic controllers receiving signals from proximity sensors and limit switches. IC Role / Device Role / Timing Role: Clamp connected between field-side input and PLC common, suppressing inductive transients generated by relay coil de-energization. Use Value: 100 A IFSM rating withstands repetitive 8.3 ms coil flyback pulses; 20 °C/W RJL enables thermal stability under sustained 5.0 W dissipation. |
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 | Surface-mount SMB package; same VRWM (5.8 V), VC = 11.2 V @ 53.5 A; lower PPK (600 W same, but shorter thermal time constant). | Requires SMT reflow process; unsuitable for high-vibration environments where axial leads provide mechanical retention. | Select when board space is constrained and automated assembly is preferred; verify layout clearance for 11.2 V clamping. |
| 1.5KE6.8A | Same axial package but higher PPK (1500 W); VC = 10.5 V @ 143 A; wider VBR range (6.12–7.48 V); higher IR (2500 µA @ VRWM). | Over-spec'd for 600 W use cases; better suited for automotive load-dump protection where 100 V transients occur. | Select only if future-proofing for higher-energy threats is required; accept trade-off of higher leakage and cost. |
Compared with SMBJ6.8A and 1.5KE6.8A, the P6KE6.8A offers optimal balance of proven axial reliability, UL 497B certification for isolated loops, and precise 10.5 V clamping-making it preferred for industrial power inputs and medical analog front-ends where through-hole serviceability and safety compliance are mandatory.
Availability
P6KE6.8A is available at Aetrix Electronics and suitable for industrial power supply protection, medical equipment input protection, telecom line interface protection, and PLC digital I/O module protection requiring stable component supply across multi-year production cycles.
Supply support for P6KE6.8A 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
ON Semiconductor (now part of onsemi) is a global semiconductor manufacturer specializing in power management, analog, sensing, and connectivity solutions for automotive, industrial, cloud, and medical markets.
The P6KE6.8A belongs to the P6KE Series of 600 W axial-leaded TVS diodes, engineered specifically for cost-sensitive, high-reliability overvoltage protection in industrial power conversion, instrumentation, and safety-critical equipment.
FAQ
What is the clamping voltage of the P6KE6.8A and how is it measured?
The P6KE6.8A has a maximum clamping voltage (VC) of 10.5 V, measured at a peak pulse current (IPP) of 57 A using the standardized 1 ms exponential waveform defined in Figure 4 of the datasheet. This value represents the highest voltage the device allows across its terminals during a transient event, directly protecting downstream components from overvoltage stress. The P6KE6.8A maintains this clamping performance across its specified operating temperature range.
Is the P6KE6.8A RoHS compliant and what does the 'G' suffix indicate?
Yes, the P6KE6.8A is RoHS compliant when ordered with the 'G' suffix (e.g., P6KE6.8AG), which explicitly denotes a Pb-free Surmetic-40 package. The base P6KE6.8A part is also manufactured to meet RoHS requirements per ON Semiconductor's Pb-free strategy, with soldering profiles validated up to 260 °C for 10 seconds at 1/16″ from the case. Both variants are fully compatible with standard leaded and lead-free assembly processes.
Can the P6KE6.8A be used in bidirectional protection circuits?
No, the P6KE6.8A is a unidirectional TVS diode and must be used with correct polarity: cathode to the protected line and anode to ground. It conducts only during positive transients relative to ground. For bidirectional protection (e.g., AC lines or data buses), a separate bidirectional variant such as P6KE6.8CA or a back-to-back diode configuration is required. Using P6KE6.8A in reverse orientation will not provide clamping and may fail catastrophically.
What is the maximum steady-state power dissipation rating for the P6KE6.8A?
The P6KE6.8A has a steady-state power dissipation (PD) rating of 5.0 W at a lead temperature (TL) of 25 °C, derating linearly at 50 mW/°C above TL = 50 °C. This rating applies to continuous DC or low-frequency reverse-biased conditions-not transient surges-and assumes 3/8″ lead length. Exceeding this limit risks thermal runaway; designers must ensure adequate PCB copper area and airflow per Figure 5 derating curve.
Does the P6KE6.8A meet any safety certifications for industrial use?
Yes, the P6KE6.8A carries UL 497B recognition (File #E210057, Category QVGQ2) for isolated loop circuit protection-a requirement in telecom, medical, and industrial control systems. This certification covers rigorous testing including strike voltage breakdown, endurance conditioning, dielectric withstand, and discharge performance. Unlike basic flammability-only approvals, UL 497B validates the P6KE6.8A's functional safety role in surge suppression circuits.
P6KE6.8A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- T-18, Axial
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5.8V
- Voltage - Breakdown (Min):
- 6.45V
- Voltage - Clamping (Max) @ Ipp:
- 10.5V
- Current - Peak Pulse (10/1000µs):
- 57A (8/20µs)
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- Axial
P6KE6.8A FAQ
1.How can I place an order for P6KE6.8A through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE6.8A 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 P6KE6.8A reliable?
The price and inventory of P6KE6.8A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE6.8A is usually 5 days.
3.What payment methods are accepted for P6KE6.8A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE6.8A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE6.8A?
P6KE6.8A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE6.8A 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 P6KE6.8A?
For technical support, including P6KE6.8A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE6.8A requirements.
6.How does Aetrix verify that P6KE6.8A is sourced from the original manufacturer or authorized distributors?
All P6KE6.8A 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 P6KE6.8A meets industry standards.
7.What is the process for return or replacement of P6KE6.8A?
All P6KE6.8A units undergo pre-shipment inspection (PSI). If there is an issue with P6KE6.8A, 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 P6KE6.8A part is unused and in its original packaging.
Return procedure for P6KE6.8A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6KE6.8A Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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ESD5Z3.3T1G
onsemi
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D5V0H1B2LP-7B
Diodes Incorporated
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D5V0P1B2LP-7B
Diodes Incorporated
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DESD5V0U1BA-7
Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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PESD2V0Y1BSFYL
Nexperia USA Inc.
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DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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D5V0L1B2WS-7
Diodes Incorporated
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