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onsemi 1N6274ARL4
- Part No.:
- 1N6274ARL4
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
1N6274ARL4.pdf
- Description:
- TVS DIODE 11.1VWM 18.2VC AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:7,178
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Product details
Overview
1N6274ARL4 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 11.1 V working peak reverse voltage (VRWM), 13 V nominal breakdown voltage (VBR), 18.2 V maximum clamping voltage (VC) at 82 A peak pulse current (IPP), and sub-1 ns response time - deployed in power supply input stages, industrial control I/O lines, and communication interface surge protection.
For engineers reviewing the 1N6274ARL4 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, surge current capability under 1 ms waveform, and UL 497B recognition for isolated loop circuit compliance.
Technical Context
This axial-leaded TVS diode operates as a voltage-clamped shunt protector: when transient voltage exceeds its VBR (12.4–13.7 V), it avalanches into low-impedance conduction, diverting surge current away from downstream components. Its 20 °C/W junction-to-lead thermal resistance enables effective heat dissipation during repetitive 1 ms pulses up to 1500 W.
The device complies with UL 497B for isolated loop circuit protection and achieves Class 3 ESD immunity (>16 kV HBM). Its low leakage (<5 µA above 10 V) ensures minimal standby power loss, while its <1 ns response time minimizes voltage overshoot before clamping engages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500 W @ 1 ms - sustains single high-energy surges common in AC line or lightning-induced events |
| Working Peak Reverse Voltage (VRWM) | 11.1 V - sets maximum continuous DC/peak operating voltage before leakage rises significantly |
| Breakdown Voltage (VBR) | 12.4–13.7 V @ 1 mA - defines precise avalanche onset threshold for reliable clamping initiation |
| Clamping Voltage (VC) | 18.2 V @ 82 A IPP - maximum voltage seen by protected circuit during full-rated surge |
| Response Time | <1 ns - ensures clamping activation before transient edge damages CMOS/MOS inputs |
| Leakage Current | <5 µA @ VRWM - negligible loading on 12 V supply rails or signal lines |
| UL Recognition | UL 497B QVGV2 - certified for use in telecom and industrial isolated loop protection circuits |
Pinout & Package
1N6274ARL4 is housed in an axial-leaded Surmetic plastic package (Case 41A), with cathode identified by a polarity band. Leads are Pb-free, solderable at 230°C for 10 seconds at 1/16″ from case.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current return path | Connected to ground or low-impedance reference; carries full IPP during clamping |
| Cathode | Protected circuit connection point | Connected to line being protected (e.g., +12 V rail); voltage referenced to anode |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse rating | Handles IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) without degradation |
| UL 497B certification | Validated for telecom/data line isolation barriers requiring safety-approved protectors |
| Class 3 ESD immunity | Withstands >16 kV contact discharge per HBM - eliminates need for secondary ESD stages |
| Low zener impedance | Ensures stable clamping across temperature and aging - critical for repeatable protection margins |
| Void-free transfer-molded case | Prevents moisture ingress and delamination under thermal cycling in industrial environments |
Applications
| Industrial PLC I/O Protection | AC-DC Power Supply Input Stage |
|---|---|
Use Scenario: 24 V DC digital input modules exposed to inductive kickback from solenoids and relay coils. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between input terminal and ground to clamp transients before they reach optocoupler or MCU GPIO. Use Value: 18.2 V clamping voltage provides 6.8 V margin below typical 24 V input absolute max rating (30 V), preventing latch-up or oxide damage. |
Use Scenario: Primary-side rectified DC bus (≈340 V) in offline SMPS subjected to lightning-induced surges on AC mains. IC Role / Device Role / Timing Role: Secondary-side TVS on low-voltage auxiliary rail (e.g., 12 V bias supply) to protect PWM controller and gate drivers. Use Value: Sub-1 ns response prevents transient propagation to ICs during startup or fault conditions where bulk capacitance is insufficient. |
| Medical Equipment Signal Lines | Point-of-Sale Terminal Interfaces |
Use Scenario: RS-485 data lines connecting patient monitors to central nursing stations in hospital-grade installations. IC Role / Device Role / Timing Role: Bidirectional protection not required; unidirectional 1N6274ARL4 used on VCC-supplied side of isolated transceiver to clamp positive-going surges only. Use Value: UL 497B recognition satisfies medical equipment isolation barrier requirements for surge protection in patient-connected systems. |
Use Scenario: USB and Ethernet ports on retail POS terminals located near fluorescent lighting or cash drawer solenoids. IC Role / Device Role / Timing Role: TVS mounted directly at connector to suppress ESD and fast transients before reaching PHY or USB controller. Use Value: 13 V VBR aligns with 3.3 V/5 V logic rails via series impedance, enabling robust Class 3 ESD protection without signal distortion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ12A | DO-214AA package; 12 V VRWM; 19.9 V VC @ 75.4 A; 600 W rating | Lower power handling; surface-mount only; no UL 497B listing | Preferred for space-constrained PCBs where 600 W surge margin suffices and through-hole mounting is undesirable |
| 1.5KE13A | Same 13 V VBR family; identical Case 41A package; 1500 W rating; UL 497B certified | No functional difference - JEDEC-registered variant with same electrical specs and mechanical form | Direct form-fit-function alternative; differs only in manufacturer marking and tape/reel packaging configuration |
Compared with SMBJ12A, 1N6274ARL4 delivers higher surge energy handling and regulatory compliance for safety-critical loops; compared with 1.5KE13A, it shares identical protection performance but uses ON Semiconductor's legacy JEDEC part numbering and RLP tape-and-reel format.
Availability
1N6274ARL4 is available at Aetrix Electronics and suitable for industrial automation, medical instrumentation, and point-of-sale terminal designs requiring stable component supply, long-term lifecycle support, and UL-recognized surge protection.
Supply support for 1N6274ARL4 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 consumer markets.
The 1N6267A Series - including 1N6274ARL4 - was engineered as cost-effective, high-reliability axial TVS diodes for board-level surge protection in harsh industrial and medical environments where regulatory compliance and repeatable clamping are mandatory.
FAQ
What is the clamping voltage of the 1N6274ARL4 under full-rated surge current?
The 1N6274ARL4 exhibits a maximum clamping voltage (VC) of 18.2 V when subjected to its rated peak pulse current (IPP) of 82 A with a 1 ms exponential waveform. This value is measured per Figure 5 in the ON Semiconductor datasheet and represents the highest voltage imposed on the protected circuit during worst-case transient events - critical for ensuring compatibility with downstream ICs rated for ≤30 V absolute maximum.
Does the 1N6274ARL4 meet UL 497B requirements for isolated loop protection?
Yes, the 1N6274ARL4 is explicitly listed under UL 497B (File #116110, QVGV2 category) for isolated loop circuit protection. This certification covers validation across strike voltage breakdown, endurance conditioning, dielectric withstand, and discharge testing - confirming suitability for telecom interfaces, medical isolation barriers, and industrial fieldbus segments where safety-agency approval is mandatory.
How does the 1N6274ARL4 differ from the 1.5KE13A in practical design use?
The 1N6274ARL4 and 1.5KE13A share identical electrical specifications (VRWM = 11.1 V, VBR = 12.4–13.7 V, VC = 18.2 V @ 82 A), mechanical package (Case 41A), and UL 497B recognition. The distinction lies solely in part numbering convention (JEDEC vs. ON Semiconductor proprietary) and packaging format: 1N6274ARL4 ships in 1500-unit tape-and-reel (RL4), whereas 1.5KE13A may be offered in alternate configurations - making them functionally interchangeable in layout and circuit design.
What is the maximum steady-state power dissipation for the 1N6274ARL4 at 75°C lead temperature?
The 1N6274ARL4 has a steady-state power dissipation (PD) rating of 5.0 W at a lead temperature (TL) of 75°C, with linear derating of 20 mW/°C above that temperature. This limit applies to continuous DC or low-frequency reverse-bias conditions - not transient suppression - and assumes 3/8″ lead length per JEDEC test conditions. Exceeding this rating risks thermal runaway during sustained overvoltage.
Can the 1N6274ARL4 be used for bidirectional transient suppression?
No, the 1N6274ARL4 is a unidirectional TVS diode optimized for clamping positive transients relative to ground. For bidirectional protection (e.g., AC lines or differential data buses), ON Semiconductor offers the 1.5KE13CA - a companion device with symmetrical breakdown in both polarities. Using 1N6274ARL4 in reverse-biased configurations risks premature failure due to lack of specified reverse conduction capability.
1N6274ARL4 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):
- 11.1V
- Voltage - Breakdown (Min):
- 12.4V
- Voltage - Clamping (Max) @ Ipp:
- 18.2V
- 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
1N6274ARL4 FAQ
1.How can I place an order for 1N6274ARL4 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6274ARL4 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 1N6274ARL4 reliable?
The price and inventory of 1N6274ARL4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6274ARL4 is usually 5 days.
3.What payment methods are accepted for 1N6274ARL4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6274ARL4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6274ARL4?
1N6274ARL4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6274ARL4 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 1N6274ARL4?
For technical support, including 1N6274ARL4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6274ARL4 requirements.
6.How does Aetrix verify that 1N6274ARL4 is sourced from the original manufacturer or authorized distributors?
All 1N6274ARL4 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 1N6274ARL4 meets industry standards.
7.What is the process for return or replacement of 1N6274ARL4?
All 1N6274ARL4 units undergo pre-shipment inspection (PSI). If there is an issue with 1N6274ARL4, 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 1N6274ARL4 part is unused and in its original packaging.
Return procedure for 1N6274ARL4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N6274ARL4 Tags
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