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onsemi 1.5KE6.8ARL4
- Part No.:
- 1.5KE6.8ARL4
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
1.5KE6.8ARL4.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:2,091
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Product details
Overview
1.5KE6.8ARL4 from ON Semiconductor is a unidirectional 1500 W transient voltage suppressor (TVS) diode designed for parallel clamping protection of sensitive electronics 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) at 10 mA, 10.5 V maximum clamping voltage (VC) at 143 A peak pulse current, and sub-1 ns response time - ideal for safeguarding power supply rails and I/O lines in industrial power supplies and medical equipment.
For engineers reviewing the 1.5KE6.8ARL4 datasheet, pinout, applications, or equivalent options, key selection criteria include VRWM margin over operating voltage, VC vs. IC withstand capability, UL 497B recognition for isolated loop protection, and axial lead (Case 41A) thermal derating above 75°C.
Technical Context
This device operates as a silicon avalanche diode with sharp Zener-like breakdown characteristics, triggered when reverse voltage exceeds VBR. Its low dynamic impedance (<1 Ω typical near VBR) ensures stable clamping under high di/dt transients, while its thermally robust Surmetic axial package enables direct PCB mounting with 20 °C/W junction-to-lead thermal resistance.
The 1.5KE6.8ARL4 complies with UL 497B for isolated loop circuit protection and meets Class 3 (>16 kV) HBM ESD immunity. It is rated for non-repetitive 1 ms pulses up to 1500 W at TL ≤ 25°C, with linear derating to 5.0 W steady-state dissipation at TL = 75°C and 0 mW/°C above that point.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500 W @ 1 ms pulse - sustains single high-energy surges without failure |
| Working Peak Reverse Voltage (VRWM) | 5.8 V - maximum continuous reverse voltage before significant leakage; sets minimum system operating margin |
| Breakdown Voltage (VBR) | 6.45–7.14 V @ IT = 10 mA - defines precise turn-on threshold for clamping initiation |
| Clamping Voltage (VC) | 10.5 V @ IPP = 143 A - maximum voltage seen by protected circuit during worst-case surge |
| Leakage Current (IR) | < 1000 µA @ VRWM - negligible standby power loss and signal distortion in DC-biased rails |
| Response Time | < 1 ns - fast enough to clamp ESD events before downstream IC damage occurs |
| ESD Rating | Class 3 (>16 kV) per HBM - validated for handling and board-level ESD robustness |
Pinout & Package
1.5KE6.8ARL4 uses an axial-leaded Surmetic plastic package (Case 41A), with cathode identified by a polarity band. Leads are tin-plated copper, solderable at 260°C for 10 seconds at 1/16″ from case. Mounting position is unrestricted.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or lowest potential node in unidirectional clamping configuration |
| Cathode | High-side clamping terminal | Connected to protected line (e.g., +VOUT); polarity band marks this terminal |
Key Features
| Feature | Design Value |
|---|---|
| UL 497B Recognition | Validated for isolated loop circuit protection - satisfies safety-critical telecom and industrial interface requirements |
| Low Clamping Ratio (VC/VBR) | 1.54 (10.5 V / 6.8 V) - tight voltage control minimizes stress on downstream MOSFETs or regulators |
| Pb-Free Axial Lead Construction | RoHS-compliant Surmetic package with corrosion-resistant finish - supports automated through-hole assembly and long-term reliability |
| Thermal Derating Profile | 5.0 W steady-state @ TL = 75°C, 20 °C/W RJL - enables predictable power handling in convection-cooled enclosures |
Applications
| Industrial Power Supply Input Protection | Medical Equipment ESD Shielding |
|---|---|
Use Scenario: Protecting AC-DC adapter input stage against line surges and load dump transients in factory automation controllers. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed across bulk capacitor input, clamping positive transients to <10.5 V. Use Value: Prevents overvoltage failure of bridge rectifier and primary-side controller ICs during 1 kV/500 A surge events. | Use Scenario: Safeguarding patient-connected analog front-end inputs in portable ultrasound devices against HBM ESD. IC Role / Device Role / Timing Role: Low-capacitance clamping element on sensor signal path, grounded via short trace to chassis. Use Value: Maintains signal integrity below 10 pF capacitance while surviving >16 kV contact discharge without parametric shift. |
| Communication System DC Bias Rails | Process Control I/O Module Protection |
Use Scenario: Securing 5 V bias rail for RS-485 transceivers in outdoor base stations exposed to induced lightning surges. IC Role / Device Role / Timing Role: Standoff diode mounted directly at connector entry point, shunting surge energy to local ground plane. Use Value: Limits rail excursion to 10.5 V during 10/1000 µs transients, preserving transceiver latch-up immunity and data integrity. | Use Scenario: Protecting 24 V digital input terminals in PLC modules from field-wiring transients and relay coil kickback. IC Role / Device Role / Timing Role: Primary overvoltage clamp on optocoupler input side, sized for 143 A peak pulse handling. Use Value: Enables reliable operation under IEC 61000-4-5 Level 4 (4 kV) surge testing without component replacement. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ6.8A | Surface-mount SMB package (vs. axial), 600 W rating, 11.2 V VC @ 53.6 A | Lower surge capacity; suited for space-constrained PCBs where 1500 W is not required | Select when board area is limited and peak surge energy is ≤600 W |
| 1N6267A | Same electrical specs and Case 41A package; JEDEC-registered part number for identical device | No functional difference - used interchangeably in legacy designs and BOMs | Choose for documentation alignment with JEDEC standard naming |
Compared with 1.5KE6.8ARL4, SMBJ6.8A offers smaller footprint but reduced surge handling, while 1N6267A provides identical performance with standardized JEDEC marking - enabling drop-in sourcing flexibility without layout or thermal redesign.
Availability
1.5KE6.8ARL4 is available at Aetrix Electronics and suitable for industrial power supplies, medical diagnostic equipment, communication infrastructure hardware, and process control systems requiring stable component supply and UL-recognized surge protection.
Supply support for 1.5KE6.8ARL4 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 is a global semiconductor supplier delivering energy-efficient, high-performance silicon solutions for automotive, industrial, cloud computing, and IoT applications.
The 1.5KE6.8ARL4 belongs to the Mosorb™ 1500 W TVS family, engineered specifically for robust, cost-effective overvoltage protection in high-reliability power conversion and signal interface circuits.
FAQ
What is the working peak reverse voltage (VRWM) of the 1.5KE6.8ARL4?
The 1.5KE6.8ARL4 has a working peak reverse voltage (VRWM) of 5.8 V, meaning it remains in high-impedance blocking mode up to this DC or continuous peak voltage level. This value ensures compatibility with 5 V systems where a safety margin above nominal rail voltage is required before clamping initiates. Exceeding VRWM triggers avalanche conduction, and the device transitions into low-impedance clamping mode at its specified VBR range of 6.45–7.14 V.
How does the clamping voltage (VC) of the 1.5KE6.8ARL4 compare to its breakdown voltage (VBR)?
The 1.5KE6.8ARL4 exhibits a clamping voltage (VC) of 10.5 V at 143 A peak pulse current, which is approximately 1.54× its nominal breakdown voltage (VBR = 6.8 V). This clamping ratio reflects the device's dynamic impedance under surge conditions and determines the maximum overvoltage stress imposed on protected components. A lower VC/VBR ratio indicates superior clamping efficiency - critical when safeguarding low-voltage ICs with tight absolute maximum ratings.
Is the 1.5KE6.8ARL4 certified for safety standards like UL 497B?
Yes, the 1.5KE6.8ARL4 carries UL 497B recognition for isolated loop circuit protection (File #E210057, QVGQ2 category). This certification confirms successful completion of strike voltage breakdown, endurance conditioning, dielectric withstand, and discharge testing - distinguishing it from generic TVS diodes lacking third-party safety validation. UL 497B compliance makes the 1.5KE6.8ARL4 suitable for use in telecom interfaces, industrial Ethernet ports, and other safety-critical signal isolation barriers.
What is the thermal derating behavior of the 1.5KE6.8ARL4 above 75°C?
The 1.5KE6.8ARL4 is rated for 5.0 W steady-state power dissipation at a lead temperature (TL) of 75°C, with zero derating coefficient above that point - meaning its usable DC power handling drops to zero at TL > 75°C. This reflects its axial Surmetic package's thermal design, optimized for transient rather than continuous power. Engineers must ensure adequate airflow or heatsinking to maintain TL ≤ 75°C if the device experiences frequent or sustained low-level leakage or repetitive surges.
Does the 1.5KE6.8ARL4 have Pb-free construction and RoHS compliance?
Yes, the "RL4" suffix in 1.5KE6.8ARL4 explicitly denotes a Pb-free, RoHS-compliant version in the Surmetic axial package. The device uses tin-plated copper leads and void-free thermosetting plastic encapsulation, meeting J-STD-609 Category 1 moisture sensitivity and IPC/JEDEC J-STD-020 reflow guidelines. This construction supports both manual soldering (260°C for 10 s at 1/16″ from case) and automated through-hole processes without lead contamination concerns.
1.5KE6.8ARL4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- DO-201AD, Axial
- Series:
- Mosorb™
- Packaging:
- Tape & Reel (TR)
- 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):
- 143A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- Axial
1.5KE6.8ARL4 FAQ
1.How can I place an order for 1.5KE6.8ARL4 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE6.8ARL4 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 1.5KE6.8ARL4 reliable?
The price and inventory of 1.5KE6.8ARL4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE6.8ARL4 is usually 5 days.
3.What payment methods are accepted for 1.5KE6.8ARL4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE6.8ARL4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE6.8ARL4?
1.5KE6.8ARL4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE6.8ARL4 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 1.5KE6.8ARL4?
For technical support, including 1.5KE6.8ARL4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE6.8ARL4 requirements.
6.How does Aetrix verify that 1.5KE6.8ARL4 is sourced from the original manufacturer or authorized distributors?
All 1.5KE6.8ARL4 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 1.5KE6.8ARL4 meets industry standards.
7.What is the process for return or replacement of 1.5KE6.8ARL4?
All 1.5KE6.8ARL4 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE6.8ARL4, 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 1.5KE6.8ARL4 part is unused and in its original packaging.
Return procedure for 1.5KE6.8ARL4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE6.8ARL4 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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