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onsemi 1N6282A
- Part No.:
- 1N6282A
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
1N6282A.pdf
- Description:
- TVS DIODE 25.6VWM 41.4VC AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:8,552
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Product details
Overview
1N6282A from ON Semiconductor is a unidirectional 1500 W Mosorb transient voltage suppressor (TVS) diode designed for parallel clamping protection of sensitive electronics against high-energy transients. It features a 30 V breakdown voltage (VBR), 41.4 V maximum clamping voltage (VC) at 36 A peak pulse current (IPP), and <1 ns response time - deployed in industrial power supplies, communication interfaces, and medical equipment input stages.
For engineers reviewing the 1N6282A datasheet, pinout, applications, or equivalent options, key selection criteria include working peak reverse voltage (25.6 V), clamping performance under 1 ms surge, UL 497B recognition for isolated loop circuits, ESD robustness (>16 kV HBM), and axial leaded Surmetic package compatibility with through-hole reflow and wave soldering.
Technical Context
The 1N6282A operates as a silicon avalanche diode configured in unidirectional polarity, triggered when reverse voltage exceeds its 28.5–31.5 V breakdown range (VBR @ IT = 1 A). Its low dynamic impedance ensures stable clamping at 41.4 V during 36 A transient surges, with thermal resistance of 20 °C/W (junction-to-lead) enabling reliable power dissipation up to 5.0 W steady-state at 75 °C lead temperature.
It complies with UL 497B for isolated loop circuit protection and meets Class 3 ESD immunity (>16 kV HBM). The device exhibits negligible capacitance at VRWM (typical <100 pF), making it suitable for DC power rail and low-speed signal line protection without signal integrity degradation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500 W @ 1 ms - sustains single high-energy transients common in AC line surges or inductive load switching |
| Working Peak Reverse Voltage (VRWM) | 25.6 V - sets maximum continuous DC/peak AC operating voltage before clamping initiates |
| Breakdown Voltage (VBR) | 28.5–31.5 V @ 1 A - defines precise avalanche onset threshold for predictable clamping activation |
| Clamping Voltage (VC) | 41.4 V @ 36 A IPP - limits protected circuit voltage during worst-case surge, critical for 3.3 V/5 V/24 V system margin |
| Response Time | <1 ns - enables suppression before transient energy couples into downstream ICs |
| Leakage Current | <5 µA @ 25.6 V - avoids excessive standby power loss or false triggering in high-impedance bias networks |
| ESD Rating | Class 3 (>16 kV HBM) - qualifies for handling in standard electronics assembly environments without special ESD controls |
Pinout & Package
Package: Axial-leaded Surmetic plastic case (Case 41A), void-free thermosetting epoxy, Pb-free external finish, cathode indicated by band. Mountable in any orientation; max soldering temperature 230°C at 1/16″ from case for 10 s.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / low-side reference | Connected to ground or lowest potential node in unidirectional clamp configuration |
| Cathode | Avalanche clamping terminal / high-side input | Connected to protected line (e.g., +24 V rail); polarity band identifies this terminal |
Key Features
| Feature | Design Value |
|---|---|
| UL 497B Recognition | Qualified for isolated loop circuit protection - satisfies safety certification requirements for telecom and industrial isolation barriers |
| 1500 W Surge Rating | Withstands IEC 61000-4-5 Level 4 (4 kV/2 Ω) surges without degradation when properly mounted |
| Low Clamping Ratio (VC/VBR) | ~1.45 - minimizes overvoltage stress on downstream components compared to higher-ratio TVS devices |
| Pb-Free Lead Finish | Complies with RoHS Directive 2011/65/EU and JEDEC J-STD-609A Class 3 moisture sensitivity |
| Thermal Robustness | RJL = 20 °C/W - supports sustained operation in enclosed enclosures up to 75 °C ambient with 3/8″ lead length |
Applications
| Industrial Power Supply Input Protection | RS-485/422 Communication Line Clamp |
|---|---|
Use Scenario: 24 V DC industrial power supply subjected to load dump and inductive kickback from solenoids or motors. IC Role / Device Role / Timing Role: Unidirectional TVS placed across input terminals to clamp transients before they reach upstream rectifier and downstream DC-DC converter. Use Value: Limits voltage excursion to ≤41.4 V during 36 A surges, preserving 40 V-rated input capacitors and preventing MOSFET gate oxide failure in primary-side controllers. |
Use Scenario: RS-485 transceiver bus lines exposed to ESD events and cable-induced surges in factory automation networks. IC Role / Device Role / Timing Role: Discrete TVS pair (one per line) referenced to local ground, absorbing common-mode transients while maintaining signal integrity. Use Value: Sub-1 ns response prevents data corruption during 15 kV contact ESD; low leakage (<5 µA) avoids bias current errors in high-impedance termination networks. |
| Medical Equipment Mains-Facing Circuits | Programmable Logic Controller (PLC) Digital Input Protection |
Use Scenario: Isolated auxiliary power supply input in Class II medical devices connected to hospital-grade outlets. IC Role / Device Role / Timing Role: Primary-side TVS on transformer primary winding or bridge rectifier output to meet IEC 60601-1 surge immunity requirements. Use Value: UL 497B recognition validates use in patient-connected equipment isolation barriers; 1500 W rating covers combination wave (1.2/50 µs + 8/20 µs) surges per IEC 61000-4-5. |
Use Scenario: 24 V digital input channel on PLC module receiving signals from limit switches and sensors in harsh plant environments. IC Role / Device Role / Timing Role: TVS installed between field input and optocoupler input, shunting induced surges before reaching internal logic. Use Value: 25.6 V VRWM matches typical 24 V nominal input range; clamping at 41.4 V protects 50 V-rated optocoupler LEDs and series current-limiting resistors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ30A | Surface-mount SMC package (DO-214AA), 30 V VRWM, 48.4 V VC @ 31.1 A, lower 600 W PPK | Requires PCB redesign for SMT layout; unsuitable for through-hole legacy systems or high-temperature leaded assemblies | Select when board space is constrained and automated SMT assembly is available; verify thermal pad design for 600 W derating. |
| 1.5KE30A | Same die in alternate branding (ON Semiconductor dual-marking), identical electrical specs and Case 41A package | No functional or mechanical difference; used interchangeably in BOMs per ON Semi documentation | Preferred for new designs due to broader distributor stock and simplified procurement under 1.5KE prefix. |
Compared with SMBJ30A, the 1N6282A delivers 2.5× higher surge power in a proven axial-leaded form factor ideal for serviceable or high-reliability through-hole systems; versus 1.5KE30A, it offers identical performance with legacy JEDEC marking preferred in aerospace and defense legacy schematics.
Availability
1N6282A is available at Aetrix Electronics and suitable for industrial power supplies, RS-485 communication interfaces, and medical auxiliary power circuits requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for 1N6282A 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, sensor, and connectivity solutions for automotive, industrial, cloud, and medical markets.
The 1N6282A belongs to the 1N6267A Series of Mosorb TVS diodes - engineered specifically for cost-effective, high-reliability transient suppression in industrial and communications infrastructure where UL recognition and surge survivability are mandatory.
FAQ
What is the maximum clamping voltage of the 1N6282A under rated surge conditions?
The 1N6282A exhibits a maximum clamping voltage (VC) of 41.4 V when subjected to its rated peak pulse current of 36 A with a 1 ms exponential waveform. This value is measured per Figure 5 in the official ON Semiconductor datasheet and represents the upper bound of voltage seen by protected circuitry during worst-case transient events - critical for verifying margin against downstream component absolute maximum ratings.
Does the 1N6282A meet UL 497B requirements for isolated loop protection?
Yes, the 1N6282A is explicitly recognized under UL 497B (File #116110, QVGV2 category) for isolated loop circuit protection. This certification confirms successful completion of Strike Voltage Breakdown, Endurance Conditioning, Dielectric Withstand, and Discharge testing - validating its suitability in telecom interface circuits, medical isolation barriers, and other safety-critical applications requiring third-party surge protector qualification.
What is the working peak reverse voltage (VRWM) specification for the 1N6282A?
The 1N6282A has a working peak reverse voltage (VRWM) of 25.6 V, meaning it remains in high-impedance blocking state for continuous reverse voltages up to this level. This parameter directly determines the maximum steady-state DC or peak AC voltage that can be safely applied without initiating clamping - essential for selecting appropriate overvoltage protection margins in 24 V industrial control systems.
Is the 1N6282A compatible with lead-free soldering processes?
Yes, the 1N6282A features a Pb-free external lead finish compliant with RoHS and qualified for lead-free reflow and wave soldering. Its maximum soldering temperature is specified at 230°C for 10 seconds at 1/16 inch from the case body, aligning with IPC-J-STD-020D moisture sensitivity level (MSL) 1 requirements - no pre-baking needed for standard handling and assembly.
How does the 1N6282A compare to bidirectional TVS diodes like 1N6282CA?
The 1N6282A is unidirectional and optimized for DC rail protection where polarity is fixed, whereas 1N6282CA (not a JEDEC-registered part number but a 1.5KE30CA variant) provides symmetrical clamping for AC or bipolar signal lines. The 1N6282A offers lower leakage and tighter VBR tolerance in the forward direction, but cannot suppress negative-going transients - use only where circuit topology guarantees unidirectional surge polarity.
1N6282A 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):
- 25.6V
- Voltage - Breakdown (Min):
- 28.5V
- Voltage - Clamping (Max) @ Ipp:
- 41.4V
- Current - Peak Pulse (10/1000µs):
- -
- 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
1N6282A FAQ
1.How can I place an order for 1N6282A through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6282A 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 1N6282A reliable?
The price and inventory of 1N6282A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6282A is usually 5 days.
3.What payment methods are accepted for 1N6282A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6282A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6282A?
1N6282A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6282A 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 1N6282A?
For technical support, including 1N6282A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6282A requirements.
6.How does Aetrix verify that 1N6282A is sourced from the original manufacturer or authorized distributors?
All 1N6282A 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 1N6282A meets industry standards.
7.What is the process for return or replacement of 1N6282A?
All 1N6282A units undergo pre-shipment inspection (PSI). If there is an issue with 1N6282A, 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 1N6282A part is unused and in its original packaging.
Return procedure for 1N6282A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N6282A Tags
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