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onsemi 1.5KE8.2A
- Part No.:
- 1.5KE8.2A
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
1.5KE8.2A.pdf
- Description:
- TVS DIODE 7.02VWM 12.1VC AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:8,857
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Product details
Overview
1.5KE8.2A 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, 12.1 V maximum clamping voltage (VC) at 124 A peak pulse current (IPP), and sub-1 ns response time. It is used in power supply input stages, industrial I/O interfaces, and telecom line cards.
For engineers reviewing the 1.5KE8.2A datasheet, pinout, applications, or equivalent options, key selection criteria include VRWM margin over operating DC voltage, VC vs. protected IC's absolute maximum rating, surge current capability under 1 ms pulses, and UL 497B recognition for isolated loop circuit compliance.
Technical Context
The 1.5KE8.2A operates as a silicon avalanche diode with sharp Zener-like breakdown characteristics, triggered when reverse voltage exceeds its specified VBR. Its low dynamic impedance ensures stable clamping during high-energy transients, while its thermally robust Surmetic axial package enables reliable heat dissipation under repetitive surge conditions.
It complies with Class 3 ESD immunity (>16 kV HBM), meets UL 497B for isolated loop circuit protection, and is rated for non-repetitive 1500 W peak power at TL ≤ 25°C per 1 ms pulse. The device exhibits a positive temperature coefficient of VBR (0.065 %/°C), enabling predictable voltage drift across temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 7.02 V - Maximum continuous reverse operating voltage before significant leakage; must be ≥ system DC bus or signal swing. |
| VBR @ IT=10 mA | 7.79–8.61 V - Breakdown range defining turn-on threshold; ensures reliable triggering above normal operating voltage. |
| VC @ IPP=124 A | 12.1 V - Clamped voltage during worst-case 1 ms surge; must stay below protected IC's absolute max rating. |
| IPP | 124 A - Peak pulse current it safely shunts without failure; defines surge energy handling (1500 W × 1 ms). |
| IR @ VRWM | 200 µA - Reverse leakage at rated VRWM; low enough to avoid loading low-power circuits. |
| Response Time | <1 ns - Enables suppression before transient propagates into downstream logic or analog circuitry. |
| Package | Case 41A axial lead - Industry-standard DO-15 outline; compatible with through-hole PCB assembly and manual rework. |
Pinout & Package
1.5KE8.2A uses an axial-leaded Surmetic plastic package (Case 41A), with cathode identified by a colored 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; completes clamping path during reverse transient. |
| Cathode | High-side transient input terminal | Connected to protected line (e.g., VIN, RS-485 A/B); polarity band marks this terminal. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Enables single-device protection against IEC 61000-4-5 Level 4 (4 kV/2 Ω) surges on 24 V systems. |
| UL 497B recognition | Validates suitability for telecom/data line isolation barriers without additional certification effort. |
| ESD Class 3 (>16 kV HBM) | Meets stringent electrostatic discharge immunity required for field-serviceable equipment ports. |
| Low zener impedance | Maintains tight VC tolerance under varying IPP, ensuring consistent protection margin across surge magnitudes. |
Applications
| Industrial Power Supply Input Protection | RS-485/422 Data Line Surge Suppression |
|---|---|
Use Scenario: 24 V DC input stage of PLC power module exposed to load dump and inductive kickback. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between VIN and GND, activated within <1 ns upon overvoltage. Use Value: Limits transient voltage to ≤12.1 V, protecting downstream DC-DC controller ICs rated for 16 V absolute max. | Use Scenario: Differential data lines in factory automation network subject to ground potential differences and lightning-induced surges. IC Role / Device Role / Timing Role: Line-to-ground TVS on each RS-485 A/B line, referenced to local chassis ground. Use Value: Absorbs 124 A surge current while holding line voltage within ±12.1 V, preserving signal integrity and receiver input safety. |
| Medical Equipment AC/DC Adapter Interface | Point-of-Sale Terminal Ethernet Port Protection |
Use Scenario: Secondary-side DC output of medical-grade AC/DC adapter feeding low-noise analog front-end circuitry. IC Role / Device Role / Timing Role: Final-stage clamping device after filtering, safeguarding precision ADCs and op-amps. Use Value: Provides <1 ns response and <200 µA leakage to avoid disturbing µV-level sensor signals while meeting IEC 60601-1 creepage requirements. | Use Scenario: 10/100BASE-TX Ethernet PHY interface on retail kiosk exposed to ESD events during cable insertion. IC Role / Device Role / Timing Role: Common-mode and differential-mode TVS pair on transformer-coupled PHY side. Use Value: Delivers >16 kV HBM ESD protection and UL 497B compliance without degrading 100 MHz signal bandwidth. |
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 | Lower peak power (600 W), SMC package, 8.0 V VRWM, 12.7 V VC @ 47.2 A | Better suited for space-constrained PCBs; lower surge capacity limits use to Level 2/3 IEC 61000-4-5. | Select SMBJ8.0A only if board area is critical and surge threat level is ≤ 2 kV. |
| P6KE8.2A | Same 1500 W rating but TO-204AA (DO-41) package; 7.02 V VRWM, 12.1 V VC @ 124 A; no UL 497B listing | Lacks UL recognition for isolated loop circuits; identical electrical performance but different mechanical mounting and thermal profile. | Choose P6KE8.2A only when UL 497B is not required and legacy DO-41 footprint compatibility is needed. |
Compared with SMBJ8.0A and P6KE8.2A, the 1.5KE8.2A uniquely combines 1500 W surge capability, UL 497B certification, and axial DO-15 mechanical robustness-making it optimal for industrial power entry and telecom line card designs where regulatory compliance and high-energy transient resilience are mandatory.
Availability
1.5KE8.2A is available at Aetrix Electronics and suitable for industrial power supplies, RS-485 communication interfaces, medical AC/DC adapters, and point-of-sale Ethernet ports requiring stable component supply and long-term lifecycle support.
Supply support for 1.5KE8.2A 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 power management, analog, sensor, and discrete devices for automotive, industrial, and cloud power applications.
The 1.5KE8.2A belongs to the 1.5KE series of Mosorb transient voltage suppressors-designed specifically for high-energy, unidirectional clamping in harsh electromagnetic environments such as factory automation, telecom infrastructure, and medical power systems.
FAQ
What is the working peak reverse voltage (VRWM) of the 1.5KE8.2A?
The 1.5KE8.2A has a working peak reverse voltage (VRWM) of 7.02 V. This value represents the maximum continuous DC or peak AC voltage the device can withstand in reverse bias without entering breakdown. Engineers must ensure that the system's normal operating voltage remains at or below this VRWM to prevent premature conduction and excessive leakage current. The 1.5KE8.2A is therefore appropriate for 5 V or 6 V rail protection where margin above nominal voltage is required.
How does the clamping voltage (VC) of the 1.5KE8.2A compare to typical protected IC voltage ratings?
The 1.5KE8.2A clamps to a maximum of 12.1 V at 124 A peak pulse current. This VC value is well below the 16 V absolute maximum rating of many industrial-grade DC-DC controllers and microcontrollers, providing a safe 3.9 V design margin. Because VC is measured under standardized 1 ms surge conditions, it reflects real-world worst-case suppression behavior-making the 1.5KE8.2A suitable for protecting components like the TPS5430 or STM32F4xx series in 24 V input systems.
Is the 1.5KE8.2A certified for UL 497B, and what does that mean for system design?
Yes, the 1.5KE8.2A is UL 497B recognized (File #E210057) for isolated loop circuit protection. This certification confirms successful completion of strike voltage breakdown, endurance conditioning, dielectric withstand, and discharge testing-validating its use in telecom/data line isolation barriers without requiring additional system-level certification. For designers of PoE-powered devices or isolated RS-485 nodes, specifying the 1.5KE8.2A reduces compliance risk and accelerates time-to-market.
What is the temperature coefficient of VBR for the 1.5KE8.2A, and why does it matter?
The 1.5KE8.2A has a VBR temperature coefficient of +0.065 %/°C. This means its breakdown voltage increases predictably with junction temperature-e.g., rising ~0.52 V over a 80°C rise from 25°C. This positive drift improves system safety at elevated temperatures by widening the gap between VRWM and actual VBR, reducing false triggering. Designers using the 1.5KE8.2A in hot environments (e.g., enclosed industrial enclosures) benefit from this inherent thermal stability.
Can the 1.5KE8.2A be used in bidirectional configurations?
No-the 1.5KE8.2A is strictly unidirectional and must be installed with correct polarity (cathode toward the protected line). Attempting bidirectional use would result in forward conduction and catastrophic failure during negative transients. For symmetrical surge protection, designers must use two 1.5KE8.2A devices in series opposition or select a dedicated bidirectional part like the 1.5KE8.2CA. Always verify polarity marking (cathode band) during layout and assembly of the 1.5KE8.2A.
1.5KE8.2A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- DO-201AD, Axial
- Series:
- Mosorb™
- Packaging:
- Bulk
- 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
1.5KE8.2A FAQ
1.How can I place an order for 1.5KE8.2A through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE8.2A 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 1.5KE8.2A reliable?
The price and inventory of 1.5KE8.2A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE8.2A is usually 5 days.
3.What payment methods are accepted for 1.5KE8.2A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE8.2A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE8.2A?
1.5KE8.2A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE8.2A 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 1.5KE8.2A?
For technical support, including 1.5KE8.2A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE8.2A requirements.
6.How does Aetrix verify that 1.5KE8.2A is sourced from the original manufacturer or authorized distributors?
All 1.5KE8.2A 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 1.5KE8.2A meets industry standards.
7.What is the process for return or replacement of 1.5KE8.2A?
All 1.5KE8.2A units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE8.2A, 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 1.5KE8.2A part is unused and in its original packaging.
Return procedure for 1.5KE8.2A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE8.2A 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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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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Toshiba Semiconductor and Storage
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Diodes Incorporated
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