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onsemi 1N6273ARL4
- Part No.:
- 1N6273ARL4
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
1N6273ARL4.pdf
- Description:
- TVS DIODE 10.2VWM 16.7VC AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:8,051
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Product details
Overview
1N6273ARL4 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 10.2 V working peak reverse voltage (VRWM), 12 V breakdown voltage (VBR) at 1 mA test current, and clamps to ≤16.7 V at 90 A peak pulse current - ideal for safeguarding power supply rails and I/O lines in industrial control systems.
For engineers reviewing the 1N6273ARL4 datasheet, pinout, applications, or equivalent options, key selection criteria include its 1500 W 1 ms surge rating, sub-1 ns response time, UL 497B recognition for isolated loop protection, low zener impedance, and axial leaded Surmetic CASE 41A package suitable for through-hole PCB mounting and automated tape-and-reel assembly.
Technical Context
The 1N6273ARL4 operates as a unidirectional Zener-based TVS diode, entering avalanche conduction when reverse voltage exceeds its 12 V nominal breakdown threshold. Its clamping action limits transient-induced overvoltage to ≤16.7 V at 90 A, with <5 µA leakage above 10.2 V and thermal resistance of 20 °C/W junction-to-lead.
Designed for non-repetitive surge suppression per Figure 5 waveform (1 ms pulse width), it supports steady-state dissipation up to 5.0 W at 75 °C lead temperature and derates linearly above that point. Its axial leaded CASE 41A package enables direct soldering at 230 °C for 10 seconds at 1/16 inch from case.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500 W @ 1 ms - withstands high-energy lightning-induced surges without failure |
| Working Peak Reverse Voltage (VRWM) | 10.2 V - maximum continuous DC or peak AC voltage before clamping initiates |
| Breakdown Voltage (VBR) | 12 V @ 1 mA - precise avalanche onset ensures predictable protection threshold |
| Clamping Voltage (VC) | ≤16.7 V @ 90 A IPP - limits protected circuit voltage during worst-case transient |
| Leakage Current (IR) | <5 µA @ 10.2 V - minimal standby power loss and signal integrity impact |
| Response Time | <1 ns - fast enough to suppress ESD and fast-rising transients before damage occurs |
| ESD Rating | Class 3 (>16 kV HBM) - meets stringent electrostatic discharge immunity requirements |
| UL Recognition | UL 497B QVGV2 - certified for isolated loop circuit protection in safety-critical applications |
Pinout & Package
1N6273ARL4 uses an axial-leaded Surmetic plastic package (CASE 41A), with cathode indicated by a polarity band. Leads are corrosion-resistant and readily solderable, rated for 230 °C for 10 seconds at 1/16 inch from case.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to ground or lower-potential rail in unidirectional clamping configuration |
| Cathode | Current exit terminal during reverse avalanche clamping | Connected to protected line (e.g., VCC, signal) - polarity band identifies this terminal |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Enables robust protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 12 V systems |
| UL 497B certification | Validates suitability for telecom and industrial isolated loop protection per safety standard |
| Sub-1 ns response time | Minimizes voltage overshoot during fast transients such as ESD and inductive switching spikes |
| Pb-free (RoHS-compliant) option | 1N6273ARL4G variant available - supports environmental compliance without performance trade-off |
| Low zener impedance | Ensures stable clamping voltage across varying surge currents and temperatures |
Applications
| Industrial Power Supply Protection | Medical Equipment Input Protection |
|---|---|
Use Scenario: Protecting 12 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 in parallel with input filter capacitor to clamp transients before they reach downstream regulators and microcontrollers. Use Value: Limits voltage excursion to ≤16.7 V during 90 A surges, preventing latch-up or permanent damage to 15 V-rated components. |
Use Scenario: Safeguarding patient-connected analog front-end inputs in diagnostic imaging equipment from ESD and cable discharge events. IC Role / Device Role / Timing Role: Primary overvoltage clamp on isolated sensor interface lines compliant with IEC 60601-1 creepage/clearance requirements. Use Value: UL 497B recognition confirms suitability for protected medical circuits; <1 ns response prevents transient coupling into sensitive amplifiers. |
| Telecom Line Interface Protection | Automotive Body Control Module (BCM) Inputs |
Use Scenario: Protecting RS-485 transceiver data lines in networked building automation systems exposed to induced surges on long cable runs. IC Role / Device Role / Timing Role: Bidirectional protection not required; unidirectional 1N6273ARL4 used on VCC-supply side of isolated bus interface to absorb common-mode energy. Use Value: 1500 W rating handles multi-kV surges per IEC 61000-4-5; low leakage avoids signal distortion on bias networks. |
Use Scenario: Clamping 12 V switched inputs (e.g., door lock actuator signals) in automotive BCMs subjected to ISO 7637-2 pulse 1 and pulse 3a/b. IC Role / Device Role / Timing Role: Secondary protection stage after fuse and PTC, placed directly at connector entry to limit transient propagation. Use Value: 10.2 V VRWM matches automotive battery nominal range; axial package allows mechanical strain relief in harsh under-hood environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ12A | Surface-mount SMB package; 12 V VRWM; 600 W peak power; 19.9 V clamping @ 30 A | Limited to lower-energy transients; requires PCB layout change from through-hole to SMT | Select when board space is constrained and surge threat level is ≤600 W (e.g., consumer-grade I/O) |
| 1N6273A | Identical electrical specs; axial leaded in 500-unit box format instead of 1500-unit tape-and-reel | No functional difference; differs only in packaging and logistics handling | Choose 1N6273A for manual prototyping or low-volume builds where reel feeding is unnecessary |
Compared with SMBJ12A, 1N6273ARL4 delivers 2.5× higher surge capacity and axial mechanical robustness for industrial environments; compared with 1N6273A, it offers automated assembly compatibility via EIA-481-compliant tape-and-reel packaging while maintaining identical protection performance.
Availability
1N6273ARL4 is available at Aetrix Electronics and suitable for industrial power supplies, medical diagnostic interfaces, telecom infrastructure equipment, and automotive body control modules requiring stable component supply and long-term manufacturability.
Supply support for 1N6273ARL4 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 part of onsemi) is a global semiconductor supplier specializing in energy-efficient power, analog, sensing, and connectivity solutions for automotive, industrial, cloud, and medical markets.
The 1N6273ARL4 belongs to the 1N6267A Series of Mosorb TVS diodes - engineered specifically for high-reliability, high-surge industrial and communications system protection with UL 497B certification and axial leaded ruggedness.
FAQ
What is the clamping voltage of the 1N6273ARL4 at its rated peak pulse current?
The 1N6273ARL4 clamps to a maximum of 16.7 V at its rated peak pulse current of 90 A, measured per the standard 1 ms exponential waveform defined in Figure 5 of the datasheet. This clamping voltage ensures protected circuits remain within safe operating limits during high-energy transients, and is verified across production lots per ON Semiconductor's quality testing protocol for the 1N6267A Series.
Is the 1N6273ARL4 RoHS-compliant and lead-free?
Yes, the 1N6273ARL4 is available in a Pb-free (RoHS-compliant) version designated as 1N6273ARL4G. The "G" suffix indicates full compliance with JEDEC JS-001 and EU RoHS Directive 2011/65/EU, with no lead content exceeding 0.1 wt% in homogeneous materials. Standard 1N6273ARL4 may contain lead per exemption 7a; always verify material declaration for your specific lot.
How does the 1N6273ARL4 differ from bidirectional TVS diodes like 1N6273CA?
The 1N6273ARL4 is unidirectional and protects only against reverse-polarity transients on positive-rail applications, whereas 1N6273CA is bidirectional and suppresses surges of either polarity - useful for AC lines or differential data buses. The 1N6273ARL4 has lower capacitance and tighter VBR tolerance in single-direction operation, but cannot replace 1N6273CA in symmetrical surge environments without circuit redesign.
What is the maximum steady-state power dissipation for the 1N6273ARL4 at 75°C lead temperature?
The 1N6273ARL4 has a maximum steady-state power dissipation 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 upper limit for continuous power handling in thermal equilibrium - distinct from its 1500 W transient capability, which applies only for non-repetitive 1 ms pulses.
Can the 1N6273ARL4 be used in place of the older 1N6273A without design changes?
Yes, the 1N6273ARL4 is a direct form-fit-function replacement for 1N6273A, sharing identical electrical specifications, axial CASE 41A package dimensions, pinout, and thermal characteristics. The only difference is packaging: 1N6273ARL4 ships in 1500-unit tape-and-reel format optimized for automated placement, while 1N6273A uses 500-unit boxes. No PCB or schematic modifications are required when upgrading to 1N6273ARL4.
1N6273ARL4 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):
- 10.2V
- Voltage - Breakdown (Min):
- 11.4V
- Voltage - Clamping (Max) @ Ipp:
- 16.7V
- 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
1N6273ARL4 FAQ
1.How can I place an order for 1N6273ARL4 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6273ARL4 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 1N6273ARL4 reliable?
The price and inventory of 1N6273ARL4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6273ARL4 is usually 5 days.
3.What payment methods are accepted for 1N6273ARL4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6273ARL4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6273ARL4?
1N6273ARL4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6273ARL4 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 1N6273ARL4?
For technical support, including 1N6273ARL4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6273ARL4 requirements.
6.How does Aetrix verify that 1N6273ARL4 is sourced from the original manufacturer or authorized distributors?
All 1N6273ARL4 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 1N6273ARL4 meets industry standards.
7.What is the process for return or replacement of 1N6273ARL4?
All 1N6273ARL4 units undergo pre-shipment inspection (PSI). If there is an issue with 1N6273ARL4, 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 1N6273ARL4 part is unused and in its original packaging.
Return procedure for 1N6273ARL4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N6273ARL4 Tags
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onsemi
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Diodes Incorporated
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