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onsemi 1.5KE22ARL4G
- Part No.:
- 1.5KE22ARL4G
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
1.5KE22ARL4G.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:7,437
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Product details
Overview
1.5KE22ARL4G from ON Semiconductor is a unidirectional 1500 W transient voltage suppressor (TVS) diode designed for parallel clamping protection of sensitive electronics against ESD, lightning surges, and inductive switching transients. It features a 18.8 V working peak reverse voltage (VRWM), 22 V nominal breakdown voltage (VBR), 33.2 V maximum clamping voltage (VC) at 45 A peak pulse current (IPP), and <1 ns response time - deployed in power supplies, industrial controls, and medical equipment input stages.
For engineers reviewing the 1.5KE22ARL4G datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage margin relative to protected IC VMAX, VRWM compatibility with DC bus voltage, surge current rating for system-level surge immunity (IEC 61000-4-5), and axial lead package suitability for through-hole PCB layouts requiring high thermal mass and mechanical robustness.
Technical Context
This device operates as a silicon avalanche diode in reverse-biased breakdown mode, triggered when transient voltage exceeds its specified VBR. Its low dynamic impedance (<1 Ω typical near IPP) ensures stable clamping under fast-rising transients (tr ≤ 10 ns), while its Surmetic axial leaded plastic package (Case 41A) provides reliable thermal conduction to PCB copper and mechanical stability during reflow or wave soldering.
The 1.5KE22ARL4G complies with UL 497B for isolated loop circuit protection and meets Class 3 HBM ESD rating (>16 kV). It is not intended for bidirectional suppression or AC line-to-line protection - its unidirectional polarity requires correct cathode-anode orientation relative to the protected DC rail.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500 W @ 1 ms - sustains single high-energy surges per IEC 61000-4-5 Level 4 (4 kV/2 Ω) |
| Working Peak Reverse Voltage (VRWM) | 18.8 V - maximum continuous DC or peak AC voltage the device blocks without leakage exceeding 5 μA |
| Breakdown Voltage (VBR) | 20.9–23.1 V @ 1 mA - precise avalanche onset range defining turn-on threshold under transient stress |
| Clamping Voltage (VC) | 33.2 V @ 45 A IPP - maximum voltage imposed on protected circuit during full-rated surge event |
| Response Time | <1 ns - enables effective suppression of sub-microsecond transients before downstream ICs experience overstress |
| Leakage Current | <5 μA @ 18.8 V - negligible standby power loss and no signal integrity impact in always-on DC rails |
| ESD Rating | Class 3 HBM (>16 kV) - exceeds IEC 61000-4-2 Level 4 for system-level ESD robustness |
Pinout & Package
1.5KE22ARL4G uses an axial-leaded Surmetic plastic package (Case 41A), with cathode identified by a colored band. Leads are tin-plated copper, rated for 260°C soldering at 1/16″ from case for 10 seconds. Mounting position is unrestricted.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or lowest potential node; defines clamping path to return path |
| Cathode | High-side transient sink | Connected to protected line (e.g., +24 V rail); conducts surge current into ground when voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse rating | Enables single-event protection against severe lightning-induced surges (e.g., 4 kV/2 Ω combination wave) |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage stress on downstream components - critical for 24 V systems with 30 V absolute max IC ratings |
| Pb-free axial lead package (RL4G) | Complies with RoHS Directive 2011/65/EU and supports lead-free assembly without reliability compromise |
| UL 497B recognition | Validates suitability for telecom and industrial isolated loop protection - eliminates need for additional safety certification effort |
| Temperature coefficient of VBR | 0.092 %/°C - ensures predictable voltage drift across −65°C to +175°C operating range for harsh-environment designs |
Applications
| Industrial Power Supply Input Protection | Medical Equipment ESD Shielding |
|---|---|
Use Scenario: 24 V DC input stage of programmable logic controller (PLC) power module exposed to field wiring surges. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed across input terminals to clamp common-mode transients before they reach upstream rectifier and bulk capacitor. Use Value: Limits transient voltage to ≤33.2 V, protecting 40 V-rated input MOSFETs and ensuring uninterrupted operation during 1 kV/500 Ω surge events. | Use Scenario: Front-panel USB and serial interface lines on diagnostic imaging equipment subject to clinical ESD discharge. IC Role / Device Role / Timing Role: Discrete TVS placed at connector entry point to shunt HBM ESD pulses (>16 kV) directly to chassis ground. Use Value: Prevents latch-up or gate oxide damage in USB transceivers by clamping within 1 ns, meeting IEC 61000-4-2 Level 4 immunity requirements. |
| Process Control Sensor Interface | Telecom Line Card Surge Protection |
Use Scenario: 4–20 mA current loop input of temperature transmitter connected to factory floor sensors. IC Role / Device Role / Timing Role: Bidirectionally unused but unidirectionally configured TVS across loop supply terminals to absorb inductive kickback from solenoid actuation. Use Value: Clamps flyback spikes to 33.2 V, preventing damage to precision op-amps and ADCs while maintaining loop accuracy within ±0.1% FSR. | Use Scenario: Isolated DC feed line (−48 V) entering VoIP gateway line card in central office environment. IC Role / Device Role / Timing Role: Primary surge protector on power entry side, certified to UL 497B for telecom isolation barrier compliance. Use Value: Withstands repeated 10/700 μs surges up to 1.5 kV without degradation, extending field service life beyond 10 years per Telcordia GR-1089-CORE. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22A | Surface-mount SMB package; 600 W rating; lower IPP (32.4 A); same VRWM (18.8 V) and VC (33.2 V) | Designed for automated SMT assembly; unsuitable for high-surge legacy through-hole designs | Select SMBJ22A only when board space is constrained and surge requirement is ≤600 W |
| 1.5KE22A | Same axial package and electrical specs; differs only in packaging format (bulk vs. tape-and-reel) | No functional difference; identical performance and mounting | Choose 1.5KE22A for manual prototyping or low-volume builds where reel handling is unnecessary |
Compared with SMBJ22A and 1.5KE22A, the 1.5KE22ARL4G offers guaranteed tape-and-reel delivery for high-volume automated insertion, maintains full 1500 W surge capability unmatched by SMT alternatives, and provides UL 497B certification required for telecom infrastructure - making it the preferred choice for industrial and regulated equipment production.
Availability
1.5KE22ARL4G is available at Aetrix Electronics and suitable for industrial power supplies, medical instrumentation, process control systems, and telecom infrastructure requiring stable component supply with long-term lifecycle assurance.
Supply support for 1.5KE22ARL4G 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 is a global semiconductor manufacturer specializing in energy-efficient power management, analog, sensor, and logic solutions for automotive, industrial, cloud computing, and medical markets.
The 1.5KE22ARL4G belongs to ON Semiconductor's Mosorb™ 1.5KE series - engineered specifically for high-reliability, high-surge-capability transient suppression in mission-critical DC power rails and signal interfaces.
FAQ
What is the maximum clamping voltage of the 1.5KE22ARL4G under full-rated surge conditions?
The 1.5KE22ARL4G has a maximum clamping voltage (VC) of 33.2 V when subjected to its rated peak pulse current (IPP) of 45 A, measured using the standard 10/1000 μs double-exponential waveform. This value is guaranteed across the full operating temperature range and defines the upper voltage limit imposed on protected circuitry during worst-case surge events - critical for ensuring compatibility with 30 V-rated downstream components.
Is the 1.5KE22ARL4G suitable for bidirectional transient suppression?
No, the 1.5KE22ARL4G is a unidirectional TVS diode and must be installed with correct polarity: cathode to the protected line, anode to ground. It does not suppress negative-going transients below ground. For bidirectional protection, two 1.5KE22ARL4G devices may be used in series opposition, or a dedicated bidirectional part such as 1.5KE22A should be selected - though that variant shares identical electrical specs except polarity configuration.
What is the working peak reverse voltage (VRWM) specification for the 1.5KE22ARL4G?
The 1.5KE22ARL4G has a working peak reverse voltage (VRWM) of 18.8 V, meaning it reliably blocks voltages up to this level in normal operation while maintaining reverse leakage below 5 μA. This parameter determines the highest continuous DC or peak AC voltage the device can withstand without entering breakdown - essential for selecting a TVS that avoids false triggering on nominal 24 V systems.
Does the 1.5KE22ARL4G meet UL safety certification requirements?
Yes, the 1.5KE22ARL4G is UL Recognized under UL 497B (File #E210057) for use in isolated loop circuit protection. This certification confirms successful completion of strike voltage breakdown, endurance conditioning, dielectric withstand, and discharge testing - validating its suitability for safety-critical telecom and industrial applications where regulatory compliance is mandatory.
What is the thermal resistance junction-to-lead (RJL) for the 1.5KE22ARL4G?
The 1.5KE22ARL4G has a thermal resistance junction-to-lead (RJL) of 20 °C/W, measured with 3/8″ lead length at TL ≤ 75°C. This value quantifies how effectively heat generated during surge conduction transfers from the silicon junction to the PCB copper via the leads - enabling accurate thermal design for repeated surge duty cycles and confirming suitability for high-temperature industrial environments up to +175°C junction temperature.
1.5KE22ARL4G 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):
- 18.8V
- Voltage - Breakdown (Min):
- 20.9V
- Voltage - Clamping (Max) @ Ipp:
- 30.6V
- Current - Peak Pulse (10/1000µs):
- 49A
- 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
1.5KE22ARL4G FAQ
1.How can I place an order for 1.5KE22ARL4G through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE22ARL4G 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 1.5KE22ARL4G reliable?
The price and inventory of 1.5KE22ARL4G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE22ARL4G is usually 5 days.
3.What payment methods are accepted for 1.5KE22ARL4G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE22ARL4G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE22ARL4G?
1.5KE22ARL4G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE22ARL4G 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 1.5KE22ARL4G?
For technical support, including 1.5KE22ARL4G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE22ARL4G requirements.
6.How does Aetrix verify that 1.5KE22ARL4G is sourced from the original manufacturer or authorized distributors?
All 1.5KE22ARL4G 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 1.5KE22ARL4G meets industry standards.
7.What is the process for return or replacement of 1.5KE22ARL4G?
All 1.5KE22ARL4G units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE22ARL4G, 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 1.5KE22ARL4G part is unused and in its original packaging.
Return procedure for 1.5KE22ARL4G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE22ARL4G Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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onsemi
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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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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Toshiba Semiconductor and Storage
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Diodes Incorporated
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