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onsemi 1N6268ARL4G
- Part No.:
- 1N6268ARL4G
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
1N6268ARL4G.pdf
- Description:
- TVS DIODE 6.4VWM 11.3VC AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:3,362
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Product details
Overview
1N6268ARL4G 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 6.4 V working peak reverse voltage (VRWM), 7.5 V nominal breakdown voltage (VBR) at 10 mA, 11.3 V clamping voltage (VC) at 132 A peak pulse current (IPP), and <1 ns response time - ideal for safeguarding power supplies and communication interfaces.
For engineers reviewing the 1N6268ARL4G datasheet, pinout, applications, or equivalent options, key selection criteria include VRWM margin over operating voltage, VC vs. device withstand rating, surge current capability under 1 ms pulses, and UL 497B recognition for isolated loop protection.
Technical Context
This unidirectional TVS operates as a voltage-clamped shunt protector: when reverse voltage exceeds VBR (~7.5 V), it avalanches rapidly to limit transient energy across protected circuitry. Its low dynamic impedance ensures stable clamping under 132 A 1 ms pulses, while thermal resistance (RJL = 20 °C/W) supports reliable power dissipation in axial-lead mounting.
The device complies with UL 497B for isolated loop circuit protection and achieves Class 3 ESD immunity (>16 kV HBM). Its Surmetic axial package (Case 41A) enables robust lead soldering at 230 °C for 10 s, with cathode polarity marked by a band.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Peak Reverse Voltage (VRWM) | 6.4 V - maximum continuous reverse voltage before significant leakage; sets minimum system operating margin. |
| Breakdown Voltage (VBR) | 7.5 V (nominal) @ 10 mA - precise avalanche initiation threshold for predictable clamping onset. |
| Clamping Voltage (VC) | 11.3 V @ 132 A IPP - maximum voltage seen by protected circuit during 1500 W transient event. |
| Peak Pulse Power (PPK) | 1500 W @ 1 ms - defines single-event surge handling capacity per JEDEC test waveform. |
| Response Time | <1 ns - enables suppression before transient energy damages downstream CMOS/MOS ICs. |
| Leakage Current (IR) | <500 nA @ VRWM - negligible standby power loss and minimal impact on high-impedance signal paths. |
| UL Recognition | UL 497B QVGV2 - certified for isolation barrier protection in telecom and industrial control loops. |
Pinout & Package
Package: Axial-leaded Surmetic plastic case (JEDEC Case 41A), Pb-free, cathode indicated by color band. Leads are corrosion-resistant and readily solderable at 230 °C for 10 s at 1/16″ from case.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference node for reverse-biased operation | Connected to system ground or low-side reference; completes clamping path during transient. |
| Cathode | Transient voltage input node | Connected to line being protected (e.g., DC input rail); avalanche conduction occurs from cathode to anode. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Handles IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) without degradation in properly designed layouts. |
| UL 497B certification | Validated for use in safety-critical isolated loop circuits including analog I/O modules and fieldbus interfaces. |
| ESD rating >16 kV (HBM) | Eliminates need for additional ESD protection stages in front-end power and data lines. |
| Low zener impedance | Maintains tight VC tolerance (<±5%) across production lots and temperature range (−65°C to +175°C). |
| Pb-free tape-and-reel packaging | 1500-unit reel (RL4G suffix) supports automated SMT placement with RoHS-compliant assembly processes. |
Applications
| Industrial Power Supply Input Protection | RS-485/422 Data Line Clamping |
|---|---|
Use Scenario: 24 V DC industrial power rail exposed to inductive switching noise and lightning-induced surges. IC Role / Device Role / Timing Role: Shunt clamping TVS placed directly across input terminals to divert >1 kA transients away from upstream rectifiers and downstream regulators. Use Value: Limits voltage excursion to ≤11.3 V during 132 A surge, preventing latch-up or gate oxide damage in 24 V-rated controllers and sensors. |
Use Scenario: Half-duplex RS-485 bus in factory automation with long cable runs subject to EFT and surge coupling. IC Role / Device Role / Timing Role: Unidirectional clamp on A/B differential pair referenced to local ground, suppressing common-mode transients before receiver inputs. Use Value: Sub-1 ns response prevents data corruption during fast-rising edge disturbances; UL 497B compliance ensures interoperability with isolated transceivers. |
| Medical Equipment AC/DC Adapter Input | Programmable Logic Controller (PLC) Digital Input Protection |
Use Scenario: Mains-connected medical power adapter where regulatory safety requires reinforced isolation and transient immunity. IC Role / Device Role / Timing Role: Primary-side TVS on bridge rectifier output, coordinated with Y-capacitor and MOV to meet IEC 60601-1 surge requirements. Use Value: 1500 W rating sustains multiple 10/1000 µs surges without parametric shift; Pb-free construction meets medical RoHS mandates. |
Use Scenario: 24 V digital input channel on PLC module interfacing with external sensors and switches in electrically noisy environments. IC Role / Device Role / Timing Role: Front-end protection element between terminal block and optocoupler input, absorbing contact bounce and relay coil kickback. Use Value: 6.4 V VRWM allows safe operation above 24 V nominal with margin for ripple; low leakage avoids false triggering of high-impedance sensing circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ6.0A | Lower PPK (600 W), smaller SMB package, 6.0 V VRWM, 10.3 V VC @ 58.3 A | Better suited for space-constrained PCBs with lower surge exposure (IEC 61000-4-4 EFT only) | Select when board area is critical and peak surge current remains below 60 A. |
| 1N6267ARL4G | 5.8 V VRWM, 6.8 V VBR, 10.5 V VC @ 143 A - tighter clamping but lower voltage margin | Preferred where system operating voltage is ≤6.0 V and minimal VC overshoot is mandatory | Choose for 5 V logic rails requiring lowest possible clamping voltage without sacrificing reliability. |
Compared with SMBJ6.0A, 1N6268ARL4G delivers 2.5× higher surge power and superior thermal robustness in axial form, while 1N6267ARL4G offers lower VC at the cost of reduced VRWM margin - making 1N6268ARL4G optimal for 24 V systems needing balanced voltage headroom and clamping performance.
Availability
1N6268ARL4G is available at Aetrix Electronics and suitable for industrial power supplies, RS-485 communication interfaces, medical AC/DC adapters, and PLC digital input modules requiring stable component supply and long-term lifecycle support.
Supply support for 1N6268ARL4G 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 manufacturer specializing in power management, analog, sensor, and discrete solutions for automotive, industrial, and cloud power applications.
The 1N6267A Series belongs to ON Semiconductor's Mosorb TVS portfolio, engineered specifically for high-reliability transient suppression in harsh electromagnetic environments - emphasizing UL-certified isolation protection, repeatable clamping, and robust surge endurance.
FAQ
What is the clamping voltage of the 1N6268ARL4G under maximum rated surge current?
The 1N6268ARL4G has a maximum clamping voltage (VC) of 11.3 V when subjected to its peak pulse current (IPP) of 132 A, measured using the standard 1 ms exponential waveform per Figure 5 in the datasheet. This value ensures protected circuits remain within safe operating limits during high-energy transients, and is guaranteed across the full operating temperature range of −65°C to +175°C.
Is the 1N6268ARL4G RoHS compliant and what does the 'G' suffix indicate?
Yes, the 1N6268ARL4G is RoHS compliant. The 'G' suffix explicitly denotes a Pb-free (lead-free) version of the device, conforming to JEDEC J-STD-609 standards. This applies to both the die attach, plating, and molding compound - verified through onsemi's material declarations and third-party testing reports for the Surmetic axial package.
How does the 1N6268ARL4G differ from bidirectional TVS diodes like the 1.5KE7.5CA?
The 1N6268ARL4G is unidirectional and protects only against negative transients on the cathode side relative to anode, making it suitable for DC power rails and grounded-signal lines. In contrast, 1.5KE7.5CA is bidirectional and clamps both polarities - used where AC signals or floating references require symmetrical protection. Their electrical specs (VBR, VC) are not interchangeable due to fundamental structural differences.
Can the 1N6268ARL4G be used in place of the older 1N6268A without design changes?
Yes - the 1N6268ARL4G is a direct replacement for 1N6268A in terms of electrical characteristics, thermal performance, and mechanical dimensions. The RL4G variant adds tape-and-reel packaging (1500 units/reel) and Pb-free construction, but retains identical VRWM (6.4 V), VBR (7.5 V), VC (11.3 V), and Case 41A outline - no PCB or schematic modifications are required.
What is the maximum steady-state power dissipation rating for the 1N6268ARL4G at 75°C lead temperature?
The 1N6268ARL4G has a steady-state power dissipation (PD) rating of 5.0 W at TL = 75°C with 3/8″ lead length, derating linearly at 20 mW/°C above that temperature. This rating reflects continuous DC or low-frequency dissipation capability - distinct from its 1500 W transient rating - and must be respected in thermally constrained enclosures or high ambient conditions.
1N6268ARL4G 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):
- 6.4V
- Voltage - Breakdown (Min):
- 7.13V
- Voltage - Clamping (Max) @ Ipp:
- 11.3V
- 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
1N6268ARL4G FAQ
1.How can I place an order for 1N6268ARL4G through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6268ARL4G 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 1N6268ARL4G reliable?
The price and inventory of 1N6268ARL4G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6268ARL4G is usually 5 days.
3.What payment methods are accepted for 1N6268ARL4G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6268ARL4G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6268ARL4G?
1N6268ARL4G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6268ARL4G 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 1N6268ARL4G?
For technical support, including 1N6268ARL4G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6268ARL4G requirements.
6.How does Aetrix verify that 1N6268ARL4G is sourced from the original manufacturer or authorized distributors?
All 1N6268ARL4G 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 1N6268ARL4G meets industry standards.
7.What is the process for return or replacement of 1N6268ARL4G?
All 1N6268ARL4G units undergo pre-shipment inspection (PSI). If there is an issue with 1N6268ARL4G, 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 1N6268ARL4G part is unused and in its original packaging.
Return procedure for 1N6268ARL4G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N6268ARL4G Tags
-
ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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ESD5Z3.3T1G
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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