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onsemi 1.5KE68ARL4
- Part No.:
- 1.5KE68ARL4
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
1.5KE68ARL4.pdf
- Description:
- TVS DIODE 58.1VWM 92VC AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:3,190
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Product details
Overview
1.5KE68ARL4 from ON Semiconductor is a unidirectional 1500 W transient voltage suppressor (TVS) diode designed for parallel clamping protection of sensitive electronics against ESD, lightning surges, and inductive switching transients. It features a 58.1 V working peak reverse voltage (VRWM), 68 V nominal breakdown voltage (VBR) at 1 mA test current, and clamps to ≤92 V at 16.3 A peak pulse current (IPP), making it suitable for DC power rail protection in industrial power supplies and telecom interfaces.
For engineers reviewing the 1.5KE68ARL4 datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage margin relative to protected IC's absolute maximum rating, VRWM alignment with steady-state operating voltage, surge current capability under 1 ms waveform, and UL 497B recognition for isolated loop circuit compliance.
Technical Context
This device operates as a silicon avalanche diode with fast response time (<1 ns), low dynamic impedance, and stable temperature coefficient (0.104 %/°C). Its unidirectional polarity enables DC-biased line protection without reverse conduction during normal operation.
The 1.5KE68ARL4 uses a Surmetic axial-leaded plastic package (Case 41A) with cathode band marking, rated for 260°C soldering at 10 seconds, and supports lead-free assembly. It complies with UL 497B for isolated loop circuit protection and achieves Class 3 ESD immunity (>16 kV HBM).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500 W @ 1 ms - withstands high-energy transients per IEEE C62.41 Category B/C surge waveforms |
| Working Peak Reverse Voltage (VRWM) | 58.1 V - sets maximum continuous DC or peak AC operating voltage before leakage exceeds 5 µA |
| Breakdown Voltage (VBR) | 68 V ±5% @ 1 mA - defines onset of avalanche conduction; used to verify minimum clamping margin |
| Clamping Voltage (VC) | ≤92 V @ IPP = 16.3 A - ensures protected circuit sees no more than this voltage during worst-case surge |
| Leakage Current (IR) | <5 µA @ VRWM - negligible standby power loss and minimal impact on high-impedance bias networks |
| Response Time | <1 ns - limits voltage overshoot during fast-rising transients (e.g., ESD, relay bounce) |
| ESD Rating | Class 3 (>16 kV HBM) - meets IEC 61000-4-2 Level 4 for system-level ESD robustness |
Pinout & Package
1.5KE68ARL4 is housed in an axial-leaded Surmetic plastic package (Case 41A), with cathode identified by a colored band. Leads are tin-plated, corrosion-resistant, and solderable at 260°C for 10 seconds at 1/16 inch from case body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or return path; conducts during reverse-biased avalanche event |
| Cathode | High-side connection point | Marked with band; connects to protected line (e.g., +12 V rail); blocks forward current in normal operation |
Key Features
| Feature | Design Value |
|---|---|
| UL 497B Recognition | Validated for isolated loop circuit protection - enables use in telecom interface circuits requiring safety certification |
| Low Clamping Ratio (VC/VBR) | 1.35 - tight ratio ensures efficient suppression with minimal overvoltage stress on downstream ICs |
| Pb-Free Construction | RoHS-compliant Surmetic package - supports lead-free reflow and environmental compliance without derating |
| Thermal Resistance (RJL) | 20 °C/W - enables reliable power dissipation into PCB copper or heatsink via leads |
| Steady-State Power Rating | 5.0 W @ TL ≤ 75°C - supports continuous thermal management in enclosed power supply enclosures |
Applications
| Industrial Power Supply Protection | Telecom Line Interface |
|---|---|
Use Scenario: Protecting 48 V DC input rails in programmable logic controllers (PLCs) against load dump and inductive kickback. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed across input terminals to clamp transients before they reach DC-DC converters and microcontrollers. Use Value: Limits voltage excursion to ≤92 V, preserving integrity of 60 V-rated input capacitors and MOSFET gate oxides. |
Use Scenario: Shielding RS-485 transceivers connected to long outdoor cables exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary front-end surge protector on differential bus lines, referenced to local ground plane. Use Value: UL 497B recognition confirms suitability for isolated data loops, reducing need for additional isolation components. |
| Medical Equipment Power Input | Automotive Body Control Module |
Use Scenario: Safeguarding auxiliary 24 V power inputs in diagnostic imaging devices where EMI immunity and reliability are critical. IC Role / Device Role / Timing Role: Standoff TVS on main power entry, coordinated with upstream fuse and downstream LC filtering. Use Value: 16 kV HBM ESD rating prevents latch-up or parametric shift in analog front-end ASICs during handling and field operation. |
Use Scenario: Protecting LIN bus power pins in door module ECUs subjected to battery disconnect transients and alternator load dump. IC Role / Device Role / Timing Role: Unidirectional clamping device on VBAT-to-ground path, sized for ISO 7637-2 Pulse 5a. Use Value: 1500 W peak power rating meets automotive surge requirements without requiring parallel devices. |
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 VRWM, 1000 W PPK, SMC package - lower power, surface-mount, higher VRWM tolerance | Preferred for space-constrained PCBs; less suited for high-current 1 ms surges | Select when board area is limited and peak surge energy is ≤1000 W |
| 1.5KE68A | Identical electrical specs; axial-leaded but bulk-packaged (500 units/box) instead of tape-and-reel | No functional difference; differs only in packaging format and reel orientation | Choose for manual assembly or low-volume prototyping where reel feeding is unnecessary |
Compared with SMBJ64A and 1.5KE68A, the 1.5KE68ARL4 offers superior 1500 W surge handling in tape-and-reel format for automated placement, while maintaining identical clamping performance and UL recognition - ideal for high-volume industrial production.
Availability
1.5KE68ARL4 is available at Aetrix Electronics and suitable for industrial power supplies, telecom infrastructure equipment, medical diagnostics systems, and automotive control modules requiring stable component supply and certified surge protection.
Supply support for 1.5KE68ARL4 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 manufacturer specializing in energy-efficient power management, analog, sensor, and connectivity solutions for automotive, industrial, cloud, and medical markets.
The 1.5KE68ARL4 belongs to the Mosorb™ 1.5KE series - a family of high-power axial TVS diodes engineered for robust, cost-effective transient suppression in harsh environments where reliability and safety certification are mandatory.
FAQ
What is the clamping voltage of the 1.5KE68ARL4 under maximum surge conditions?
The 1.5KE68ARL4 clamps to a maximum of 92 V when subjected to its rated peak pulse current of 16.3 A (1 ms exponential waveform per Figure 5). This value is measured at TA = 25°C and represents the upper limit of voltage seen by protected circuitry during worst-case transient events - critical for ensuring compatibility with downstream components' absolute maximum ratings.
Does the 1.5KE68ARL4 meet UL safety standards for circuit protection?
Yes, the 1.5KE68ARL4 is UL Recognized under standard UL 497B (File #E210057, QVGQ2 category) for isolated loop circuit protection. This certification covers dielectric withstand, endurance conditioning, and strike voltage breakdown testing - confirming its suitability for telecom, industrial control, and medical applications requiring third-party safety validation.
What is the polarity configuration of the 1.5KE68ARL4 and how is it marked?
The 1.5KE68ARL4 is a unidirectional TVS diode with cathode indicated by a single colored band on the axial package body. During normal operation, the cathode connects to the protected line (e.g., +VIN) and the anode to ground; conduction occurs only during reverse-biased avalanche, blocking forward current entirely.
Can the 1.5KE68ARL4 be used in automotive applications such as load dump protection?
Yes, the 1.5KE68ARL4 is rated for 1500 W peak pulse power and operates across −65°C to +175°C, meeting key requirements for automotive load dump (ISO 7637-2 Pulse 5a). Its 58.1 V VRWM aligns with 42 V nominal 24 V systems, and its 92 V clamping voltage stays within typical 100 V semiconductor safe operating area limits.
What is the thermal resistance and steady-state power rating of the 1.5KE68ARL4?
The 1.5KE68ARL4 has a junction-to-lead thermal resistance (RJL) of 20 °C/W and a steady-state power dissipation rating of 5.0 W at lead temperature ≤75°C. Derating begins above 75°C at 20 mW/°C, enabling reliable thermal management in enclosed power supply designs when mounted with adequate copper pour or heatsinking.
1.5KE68ARL4 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):
- 58.1V
- Voltage - Breakdown (Min):
- 64.6V
- Voltage - Clamping (Max) @ Ipp:
- 92V
- Current - Peak Pulse (10/1000µs):
- 16.3A
- 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
1.5KE68ARL4 FAQ
1.How can I place an order for 1.5KE68ARL4 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE68ARL4 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 1.5KE68ARL4 reliable?
The price and inventory of 1.5KE68ARL4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE68ARL4 is usually 5 days.
3.What payment methods are accepted for 1.5KE68ARL4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE68ARL4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE68ARL4?
1.5KE68ARL4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE68ARL4 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 1.5KE68ARL4?
For technical support, including 1.5KE68ARL4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE68ARL4 requirements.
6.How does Aetrix verify that 1.5KE68ARL4 is sourced from the original manufacturer or authorized distributors?
All 1.5KE68ARL4 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 1.5KE68ARL4 meets industry standards.
7.What is the process for return or replacement of 1.5KE68ARL4?
All 1.5KE68ARL4 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE68ARL4, 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 1.5KE68ARL4 part is unused and in its original packaging.
Return procedure for 1.5KE68ARL4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE68ARL4 Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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