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onsemi 1.5KE8.2ARL4
- Part No.:
- 1.5KE8.2ARL4
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
1.5KE8.2ARL4.pdf
- Description:
- TVS DIODE 7.02VWM 12.1VC AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:8,345
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Product details
Overview
1.5KE8.2ARL4 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 7.02 V working peak reverse voltage (VRWM), 8.2 V nominal breakdown voltage (VBR) at 10 mA test current, 12.1 V maximum clamping voltage (VC) at 124 A peak pulse current, and <1 ns response time. It is used in power supply input stages, industrial I/O interfaces, and telecom line cards.
For engineers reviewing the 1.5KE8.2ARL4 datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage margin relative to protected IC VMAX, VRWM compatibility with DC bus voltage, surge current rating for system-level immunity requirements, and axial leaded package suitability for through-hole PCB layouts with high thermal mass.
Technical Context
This device operates as a silicon avalanche diode in reverse-biased mode, entering controlled breakdown when transient voltage exceeds its VBR. Its low dynamic impedance (<1 Ω typical near VC) ensures stable clamping under fast-rising transients up to 1500 W peak power (1 ms pulse). The Surmetic axial package provides robust thermal conduction via leads to PCB copper.
It complies with UL 497B for isolated loop circuit protection and meets Class 3 (>16 kV) HBM ESD immunity. No external bias or control logic is required - operation is fully passive and automatic upon overvoltage detection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500 W @ 1 ms - sustains single high-energy surges without failure, suitable for Level 4 IEC 61000-4-5 testing |
| Working Peak Reverse Voltage | 7.02 V - maximum continuous DC or peak AC voltage the device blocks without leakage exceeding 200 µA |
| Breakdown Voltage | 8.2 V (nominal) @ 10 mA - precise avalanche onset threshold enabling predictable clamping start point |
| Clamping Voltage | 12.1 V @ 124 A - maximum voltage seen by protected circuit during full-rated surge, defining safe operating margin |
| Response Time | <1 ns - enables suppression before most semiconductor junctions experience overstress |
| Leakage Current | <200 µA @ 7.02 V - negligible standby power loss and signal integrity impact in always-on circuits |
| ESD Rating | Class 3 HBM (>16 kV) - exceeds IEC 61000-4-2 Level 4 for system-level ESD robustness |
Pinout & Package
1.5KE8.2ARL4 uses the CASE 41A axial-leaded plastic package (Surmetic), with cathode identified by a polarity band. Leads are tin-plated, 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 connection terminal | Connected to ground or lowest potential reference; completes clamping path during transient |
| Cathode | High-side connection terminal | Connected to protected line (e.g., VIN, signal); polarity band marks this terminal |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse rating | Enables protection against severe lightning-induced surges per IEC 61000-4-5 Combination Wave (1.2/50 µs + 8/20 µs) |
| Low clamping ratio (VC/VBR ≈ 1.48) | Minimizes overvoltage stress on downstream ICs while maintaining margin above normal operating voltage |
| UL 497B recognition | Validates suitability for safety-critical telecom and industrial isolation barrier applications |
| Pb-free axial package (RL4 suffix) | Meets RoHS compliance requirements without compromising thermal performance or mechanical reliability |
| Temperature coefficient of VBR | +0.065 %/°C - enables predictable voltage shift across −65°C to +175°C operating range |
Applications
| Industrial Power Supply Input Protection | RS-485/422 Data Line Surge Suppression |
|---|---|
Use Scenario: 24 V DC industrial power rail exposed to load dump and inductive kickback in PLC backplanes. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VIN and GND to clamp positive transients before they reach DC-DC converters and microcontrollers. Use Value: Limits voltage to ≤12.1 V during 124 A surges, preserving 15 V absolute maximum ratings of downstream regulators and logic ICs. | Use Scenario: Long-haul RS-485 communication lines in factory automation subject to ground potential differences and EFT bursts. IC Role / Device Role / Timing Role: Paired TVS devices (one per line) referenced to local ground, suppressing common-mode transients on A/B differential pairs. Use Value: Sub-1 ns response prevents data corruption during 4 kV EFT events; low capacitance (<100 pF @ VRWM) avoids signal edge degradation at 10 Mbps. |
| Medical Equipment AC/DC Adapter Input | Point-of-Sale Terminal Power Entry |
Use Scenario: Mains-connected medical device adapter subjected to EN 61000-4-5 surge testing per IEC 60601-1. IC Role / Device Role / Timing Role: Primary-side TVS on rectified DC bus, coordinated with MOV and fuse for staged overvoltage protection. Use Value: UL 497B recognition supports regulatory certification; 1500 W rating handles 2 kV/12 Ω combination wave without degradation. | Use Scenario: 12 V wall adapter input in retail POS terminals deployed in electrically noisy environments. IC Role / Device Role / Timing Role: Standoff TVS on DC input before buck converter, absorbing repeated 0.5–1 kV surges from shared building wiring. Use Value: 200 µA max leakage at 7.02 V prevents battery drain in always-on standby mode; axial leads allow manual rework if field failure occurs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ8.0A | Surface-mount SMB package; 8.0 V VRWM; 12.5 V VC @ 100 A; 600 W rating | Lower power handling; suited for space-constrained PCBs where 1500 W is not required | Select when board area is critical and surge threat level is ≤Level 3 IEC 61000-4-5 |
| 1N6269A | Same die, identical electrical specs; axial leaded but non-Pb-free (AG suffix); 500-unit box packaging | No functional difference; differs only in RoHS compliance and packaging format | Select when Pb-free requirement is waived and lower-volume box packaging is preferred |
Compared with SMBJ8.0A, 1.5KE8.2ARL4 delivers 2.5× higher surge energy absorption in a through-hole package ideal for high-reliability power entry points; compared with 1N6269A, it adds RoHS compliance and tape-and-reel delivery for automated assembly without electrical trade-offs.
Availability
1.5KE8.2ARL4 is available at Aetrix Electronics and suitable for industrial power supplies, communication interface protection, and medical equipment design requiring stable component supply and long-term manufacturability.
Supply support for 1.5KE8.2ARL4 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 onsemi) is a global semiconductor supplier specializing in energy-efficient power management, analog, sensing, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The 1.5KE series belongs to ON Semiconductor's Mosorb TVS portfolio, engineered specifically for high-power, high-reliability transient suppression in harsh electromagnetic environments - targeting applications where failure is not an option.
FAQ
What is the clamping voltage of the 1.5KE8.2ARL4 under full-rated surge conditions?
The 1.5KE8.2ARL4 exhibits a maximum clamping voltage (VC) of 12.1 V when subjected to its rated peak pulse current of 124 A (1 ms waveform). This value is measured per Figure 5 in the official datasheet and defines the upper voltage limit imposed on protected circuitry during worst-case transient events. Designers must ensure that all downstream components have absolute maximum voltage ratings exceeding 12.1 V to guarantee robust operation. The 1.5KE8.2ARL4 maintains this clamping performance across its full operating temperature range.
Is the 1.5KE8.2ARL4 RoHS compliant and what does the "RL4" suffix indicate?
Yes, the 1.5KE8.2ARL4 is RoHS compliant. The "RL4" suffix explicitly denotes a Pb-free axial-leaded package conforming to JEDEC standards and ON Semiconductor's Surmetic construction. This includes lead-free plating on copper alloy leads and halogen-free molding compound. The RL4 variant replaces legacy leaded versions in new designs and supports automated tape-and-reel assembly with 1500 units per reel - a key requirement for high-volume manufacturing of industrial and medical electronics using the 1.5KE8.2ARL4.
How does the 1.5KE8.2ARL4 compare to bidirectional TVS diodes for surge protection?
The 1.5KE8.2ARL4 is unidirectional and optimized for DC or single-polarity circuits like power rails and CMOS logic inputs. Unlike bidirectional TVS diodes (e.g., 1.5KE8.2A), it offers superior leakage performance (<200 µA at VRWM) and tighter VBR tolerance, making it preferable where low standby current or precise clamping onset matters. Bidirectional variants are reserved for AC lines or differential signals needing symmetrical suppression. For 12 V DC systems, the 1.5KE8.2ARL4 provides better efficiency and noise margin than its bidirectional counterpart.
Can the 1.5KE8.2ARL4 be used in parallel to increase surge current handling?
No - the 1.5KE8.2ARL4 should not be paralleled without external balancing resistors due to manufacturing variations in VBR (±5% tolerance). Mismatched breakdown voltages cause uneven current sharing, risking thermal runaway in the lower-VBR unit. For higher surge capability, select a higher-rated part (e.g., 3.0KE8.2A) or implement staged protection with upstream fusing and MOV coordination. The 1.5KE8.2ARL4 is characterized and qualified as a single-device solution; parallel use voids its specified 1500 W rating and UL 497B recognition.
What is the thermal resistance and steady-state power dissipation capability of the 1.5KE8.2ARL4?
The 1.5KE8.2ARL4 has a junction-to-lead thermal resistance (RJL) of 20°C/W and a steady-state power dissipation (PD) of 5.0 W at TL = 75°C with 3/8″ lead length. Derating is linear at 20 mW/°C above 75°C. This means the device can continuously dissipate ~3.5 W at 90°C lead temperature - sufficient for minor leakage or low-duty-cycle transients but not intended for sustained power regulation. Its primary function remains transient clamping; continuous power handling is secondary and strictly limited by PCB copper area and lead thermal path, as defined in the 1.5KE8.2ARL4 datasheet.
1.5KE8.2ARL4 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):
- 7.02V
- Voltage - Breakdown (Min):
- 7.79V
- Voltage - Clamping (Max) @ Ipp:
- 12.1V
- Current - Peak Pulse (10/1000µs):
- 124A
- 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
1.5KE8.2ARL4 FAQ
1.How can I place an order for 1.5KE8.2ARL4 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE8.2ARL4 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 1.5KE8.2ARL4 reliable?
The price and inventory of 1.5KE8.2ARL4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE8.2ARL4 is usually 5 days.
3.What payment methods are accepted for 1.5KE8.2ARL4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE8.2ARL4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE8.2ARL4?
1.5KE8.2ARL4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE8.2ARL4 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 1.5KE8.2ARL4?
For technical support, including 1.5KE8.2ARL4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE8.2ARL4 requirements.
6.How does Aetrix verify that 1.5KE8.2ARL4 is sourced from the original manufacturer or authorized distributors?
All 1.5KE8.2ARL4 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 1.5KE8.2ARL4 meets industry standards.
7.What is the process for return or replacement of 1.5KE8.2ARL4?
All 1.5KE8.2ARL4 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE8.2ARL4, 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 1.5KE8.2ARL4 part is unused and in its original packaging.
Return procedure for 1.5KE8.2ARL4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE8.2ARL4 Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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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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