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onsemi 1N6284ARL4
- Part No.:
- 1N6284ARL4
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
1N6284ARL4.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:4,631
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Product details
Overview
1N6284ARL4 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 30.8 V working peak reverse voltage (VRWM), 36 V breakdown voltage (VBR) at 1 mA, and clamps to 49.9 V at 30 A peak pulse current (IPP), making it suitable for industrial power supply input stage surge protection.
For engineers reviewing the 1N6284ARL4 datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage margin relative to protected IC's absolute maximum rating, VRWM alignment with DC bus voltage, UL 497B recognition for isolated loop circuits, and axial leaded Case 41A package compatibility with through-hole PCB layouts.
Technical Context
This device operates as a silicon avalanche diode in reverse-biased mode, triggering at VBR ≥ 34.2 V and clamping transient energy within nanoseconds. Its low dynamic impedance and <1 ns response time enable effective suppression of ESD (≥16 kV HBM) and lightning-induced surges per IEC 61000-4-5.
The 1N6284ARL4 is rated for 1500 W non-repetitive peak pulse power at 1 ms, with thermal resistance of 20 °C/W (junction-to-lead) and steady-state power dissipation of 5.0 W at TL ≤ 75 °C. It uses Surmetic axial-leaded plastic packaging with Pb-free finish and cathode band polarity marking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 30.8 V - Maximum continuous reverse operating voltage before clamping begins; must exceed system DC rail voltage by ≥10% to avoid leakage-induced heating. |
| VBR @ IT=1 mA | 34.2–37.8 V - Breakdown threshold range; ensures reliable turn-on during transients while avoiding false triggering on ripple or noise. |
| VC @ IPP=30 A | 49.9 V - Clamped voltage under 1 ms surge; defines maximum stress imposed on downstream components during worst-case transient. |
| IPP | 30 A - Peak pulse current capability at 1 ms; determines survivability against 8/20 µs surge waveforms up to 1500 W. |
| IR @ VRWM | <5 µA - Reverse leakage current at rated VRWM; ensures minimal standby power loss and no thermal runaway in high-impedance bias networks. |
| Response Time | <1 ns - Avalanche turn-on delay; critical for protecting fast-switching logic and analog front-ends from sub-microsecond ESD events. |
| UL Recognition | UL 497B QVGV2 - Certified for isolated loop circuit protection; validates compliance with telecom and industrial safety standards for surge-rated interfaces. |
Pinout & Package
Package: Axial-leaded Surmetic plastic case (JEDEC Case 41A), void-free thermosetting material, Pb-free solderable leads, cathode indicated by color band. Mounting position unrestricted.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current sink during clamping | Connected to ground or low-impedance return path; carries full surge current during transient event. |
| Cathode | Protected line connection | Connected to line being protected (e.g., +12 V rail); voltage referenced to anode during clamping action. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Enables single-device protection against Level 4 IEC 61000-4-5 surges (4 kV/2 Ω) on 24–48 V DC systems without derating. |
| UL 497B certification | Validates suitability for telecom interface protection and industrial isolated signal loops without additional safety qualification effort. |
| ESD robustness ≥16 kV (HBM) | Eliminates need for secondary ESD protection on board-level inputs exposed to handling or connector mating. |
| Low zener impedance & fast response | Minimizes voltage overshoot during fast-rising transients (<1 ns), preserving timing margins in digital control circuits. |
| Surmetic axial package | Provides mechanical reliability and thermal performance comparable to legacy glass-passivated DO-15, with RoHS-compliant finish. |
Applications
| Industrial Power Supply Input Protection | Telecom Line Interface Protection |
|---|---|
Use Scenario: 24 V DC industrial power supply input subjected to load dump and inductive switching transients. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed across input terminals to clamp surges before they reach upstream rectifier and downstream DC-DC controller. Use Value: Limits transient voltage to ≤49.9 V, ensuring input capacitors and controller ICs remain within absolute maximum ratings during 1500 W surge events. |
Use Scenario: RS-485 data line pair in building automation system exposed to induced lightning surges. IC Role / Device Role / Timing Role: Paired 1N6284ARL4 devices (one per line) referenced to common ground to suppress differential-mode transients. Use Value: Maintains signal integrity by clamping line-to-ground spikes below 50 V, preventing receiver latch-up and enabling >1 km cable runs in noisy environments. |
| Medical Equipment AC/DC Adapter Input | Process Control Sensor Signal Conditioning |
Use Scenario: Secondary-side DC output of medical-grade AC/DC adapter feeding patient-connected monitoring circuitry. IC Role / Device Role / Timing Role: Final-stage overvoltage clamp on regulated 12 V output to protect isolation barrier and analog front-end. Use Value: UL 497B recognition confirms compliance with IEC 60601-1 creepage/clearance requirements for patient-connected equipment. |
Use Scenario: 4–20 mA current loop transmitter powered from 24 V loop supply in hazardous area instrumentation. IC Role / Device Role / Timing Role: Reverse-polarity and surge protection on loop supply input to safeguard precision DAC and current source. Use Value: Low leakage (<5 µA) prevents interference with microamp-level loop current accuracy; 30.8 V VRWM accommodates 24 V ±10% tolerance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ33A | Surface-mount SMB package; 33 V VRWM; 500 W peak power; lower clamping voltage (53.3 V @ 9.4 A). | Requires PCB redesign for SMT layout; suited for space-constrained consumer electronics rather than industrial through-hole assemblies. | Select when board real estate is limited and surge threat level is ≤500 W; verify thermal pad design for sustained power dissipation. |
| 1.5KE36A | Same axial Case 41A package; identical electrical specs (30.8 V VRWM, 49.9 V VC); ON Semiconductor alternate part number with same die and test flow. | No functional or mechanical difference; used interchangeably in BOMs where JEDEC vs. manufacturer-specific numbering preference applies. | Direct form-fit-function replacement; no design change required; preferred for new designs due to ON Semiconductor's Preferred Device status. |
Compared with SMBJ33A, the 1N6284ARL4 delivers 3× higher surge energy handling in a proven through-hole package, while 1.5KE36A offers identical protection with streamlined procurement under ON Semiconductor's preferred device program.
Availability
1N6284ARL4 is available at Aetrix Electronics and suitable for industrial power supplies, telecom interface modules, medical DC adapters, and process control transmitters requiring stable component supply and long-term obsolescence management.
Supply support for 1N6284ARL4 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 1N6284ARL4 belongs to the 1N6267A Series Mosorb TVS family, engineered for high-reliability transient suppression in harsh industrial and infrastructure environments where UL recognition and 1500 W surge capability are mandatory.
FAQ
What is the clamping voltage of the 1N6284ARL4 at its rated peak pulse current?
The 1N6284ARL4 clamps to a maximum of 49.9 V at 30 A peak pulse current (IPP) with a 1 ms exponential decay waveform. This value is measured per Figure 5 in the datasheet and defines the upper voltage limit imposed on protected circuitry during standardized surge events. The 1N6284ARL4 maintains this clamping performance across its specified operating temperature range of −65 °C to +175 °C.
Is the 1N6284ARL4 RoHS compliant and lead-free?
Yes, the 1N6284ARL4 is manufactured with a Pb-free external lead finish, as explicitly stated in the "Mechanical Characteristics" section of the datasheet. All external surfaces are corrosion resistant and readily solderable, with maximum lead temperature tolerance of 230 °C for 10 seconds at 1/16 inch from the case. The 1N6284ARL4 meets RoHS Directive 2011/65/EU requirements.
How does the 1N6284ARL4 differ from bidirectional TVS diodes like 1.5KE36CA?
The 1N6284ARL4 is unidirectional and protects only against positive transients on the cathode side relative to anode ground. In contrast, 1.5KE36CA provides symmetrical clamping for both polarities, making it suitable for AC lines or differential data buses. The 1N6284ARL4 offers tighter parameter control for DC applications and UL 497B recognition specifically for unidirectional isolated loop protection-unlike the CA-series which lacks this certification.
Can the 1N6284ARL4 be used in parallel to increase surge current handling?
No, the 1N6284ARL4 is not recommended for parallel operation due to inherent parameter variation (VBR tolerance ±5%) that causes current imbalance and potential thermal runaway. For higher surge ratings, select a single higher-power device such as 3KP36A (3000 W), or implement discrete current-sharing resistors if parallel use is unavoidable-though this degrades clamping performance and is not validated by ON Semiconductor.
What is the maximum steady-state power dissipation for the 1N6284ARL4 at 75°C lead temperature?
The 1N6284ARL4 has a steady-state power dissipation rating of 5.0 W at a lead temperature (TL) of 75 °C, with linear derating of 20 mW/°C above that temperature. This rating assumes 3/8 inch lead length and defines the continuous power the device can safely dissipate without exceeding junction temperature limits. It is distinct from the 1500 W non-repetitive peak pulse rating, which applies only to transient events.
1N6284ARL4 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):
- 30.8V
- Voltage - Breakdown (Min):
- 34.2V
- Voltage - Clamping (Max) @ Ipp:
- 49.9V
- 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
1N6284ARL4 FAQ
1.How can I place an order for 1N6284ARL4 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6284ARL4 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 1N6284ARL4 reliable?
The price and inventory of 1N6284ARL4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6284ARL4 is usually 5 days.
3.What payment methods are accepted for 1N6284ARL4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6284ARL4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6284ARL4?
1N6284ARL4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6284ARL4 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 1N6284ARL4?
For technical support, including 1N6284ARL4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6284ARL4 requirements.
6.How does Aetrix verify that 1N6284ARL4 is sourced from the original manufacturer or authorized distributors?
All 1N6284ARL4 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 1N6284ARL4 meets industry standards.
7.What is the process for return or replacement of 1N6284ARL4?
All 1N6284ARL4 units undergo pre-shipment inspection (PSI). If there is an issue with 1N6284ARL4, 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 1N6284ARL4 part is unused and in its original packaging.
Return procedure for 1N6284ARL4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N6284ARL4 Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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