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onsemi 1.5KE36ARL4G
- Part No.:
- 1.5KE36ARL4G
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE36ARL4G.pdf
- Description:
- 1.5KE36 - TRANS VOLTAGE SUPPRESS
- Quantity:
- Payment:
- Shipping:
Inventory:13,964
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Product details
Overview
1.5KE36ARL4G 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 30.8 V working peak reverse voltage (VRWM), 36 V breakdown voltage (VBR) at 1 mA test current, and clamps to ≤49.9 V at 30 A peak pulse current (IPP), making it suitable for DC power rail protection in industrial power supplies and communication interfaces.
For engineers reviewing the 1.5KE36ARL4G datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage margin relative to protected IC's absolute maximum rating, VRWM compatibility with nominal operating voltage, surge current capability under 1 ms pulses, and UL 497B recognition for isolated loop circuit protection.
Technical Context
This device operates as a Zener-based avalanche diode, entering conduction when reverse voltage exceeds its specified VBR (34.2–37.8 V). Its low dynamic impedance and sub-1 ns response time enable rapid voltage clamping during fast transients. The axial leaded Surmetic package provides robust thermal dissipation with 20 °C/W junction-to-lead resistance.
It is rated for 1500 W nonrepetitive peak pulse power per 1 ms waveform (Figure 5), derated linearly above 25 °C ambient, and supports steady-state dissipation up to 5.0 W at 75 °C lead temperature. Leakage remains <5 µA at VRWM, ensuring minimal standby power impact in always-on systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 30.8 V - Maximum continuous reverse operating voltage before significant leakage; must exceed system's max DC/peak AC voltage. |
| VBR @ IT = 1 mA | 34.2–37.8 V - Breakdown threshold range; defines onset of clamping behavior under standardized test conditions. |
| VC @ IPP = 30 A | ≤49.9 V - Clamped voltage during 1 ms surge; determines worst-case stress on downstream components. |
| PPK | 1500 W @ TL ≤ 25°C - Peak transient energy absorption capacity; validates suitability for IEC 61000-4-5 Level 4 surges. |
| IR @ VRWM | ≤5 µA - Reverse leakage current; ensures negligible quiescent power loss and signal integrity in high-impedance circuits. |
| Response Time | <1 ns - Time from transient onset to clamping initiation; critical for protecting nanosecond-scale logic and data lines. |
| UL Recognition | UL 497B QVGQ2 - Certified for isolated loop circuit protection; satisfies safety compliance for telecom and industrial isolation barriers. |
Pinout & Package
1.5KE36ARL4G uses an axial-leaded plastic package (Case 41A), with cathode indicated by a polarity band. Leads are tin-plated, solderable at 260 °C for 10 seconds at 1/16 inch from case. Mounting position is unrestricted.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference node for reverse-biased operation | Connected to ground or low-impedance return path; establishes reference for clamping action. |
| Cathode | Protected line connection point | Connected to the line being protected (e.g., +12 V rail); conducts surge current to ground when overvoltage occurs. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Enables robust protection against severe transients including lightning-induced surges per IEC 61000-4-5. |
| Clamping voltage ≤49.9 V at 30 A | Provides safe margin below 50 V-rated ICs (e.g., RS-485 transceivers, microcontrollers) during surge events. |
| ESD rating >16 kV HBM | Meets or exceeds Class 3 ESD immunity requirements for end-equipment qualification (e.g., IEC 61000-4-2). |
| UL 497B recognition | Validates suitability for safety-critical isolated loop applications such as analog sensor inputs and fieldbus interfaces. |
| Low zener impedance & fast response | Minimizes voltage overshoot during fast-rising transients (<1 ns), preserving timing margins in high-speed circuits. |
Applications
| Industrial Power Supply Protection | RS-485 Communication Line Protection |
|---|---|
Use Scenario: Protecting +24 V DC input rails of PLC I/O modules against load dump and inductive kickback. IC Role / Device Role / Timing Role: Unidirectional TVS placed between rail and chassis ground to clamp transients before they reach DC-DC converters and interface ICs. Use Value: Limits rail voltage to ≤49.9 V during 30 A surges, preventing latch-up or permanent damage to 36 V-rated regulators and supervisors. | Use Scenario: Safeguarding differential bus lines in factory automation networks exposed to ground potential differences and EFT noise. IC Role / Device Role / Timing Role: Paired TVS devices (one per line) referenced to common ground, absorbing common-mode surges while preserving signal integrity. Use Value: Maintains bus functionality during 1 kV/500 A surge tests (IEC 61000-4-5) with no data corruption or receiver damage due to controlled clamping. |
| Medical Equipment Input Protection | AC-DC Adapter Secondary-Side Clamp |
Use Scenario: Shielding analog front-end inputs of patient monitoring devices from ESD events during handling and cable coupling. IC Role / Device Role / Timing Role: Low-leakage TVS (≤5 µA) placed at signal conditioning stage input to avoid DC offset errors while enabling fast transient suppression. Use Value: Provides >16 kV HBM ESD immunity without degrading 16-bit ADC accuracy or introducing measurable bias drift. | Use Scenario: Clamping output overvoltage on isolated 12 V secondary windings of wall adapters subjected to primary-side switch failure or feedback loop loss. IC Role / Device Role / Timing Role: Standby protection element connected across secondary output, activated only during fault conditions to prevent capacitor rupture or downstream IC overvoltage. Use Value: Absorbs up to 1500 W for 1 ms without degradation, allowing safe shutdown of upstream controller before thermal runaway occurs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36A | Surface-mount SMB package; lower 600 W PPK rating; same VRWM (30.8 V) and VC (≤58.1 V @ 10.3 A). | Designed for PCB space-constrained designs; lacks UL 497B certification; not rated for isolated loop use. | Select SMBJ36A only when board area is limited and UL recognition is not required; verify layout allows adequate thermal relief for lower surge rating. |
| 1.5KE36CA | Bi-directional variant; identical VRWM, VBR, and VC specs but conducts in both polarities; same axial package and UL 497B listing. | Required for AC-coupled or bidirectional signal lines (e.g., telephone line interface); unsuitable for DC rail protection where polarity matters. | Choose 1.5KE36CA only when protecting symmetrical signals or AC paths; for unidirectional DC rails like 1.5KE36ARL4G, the unidirectional version avoids unnecessary forward conduction. |
Compared with SMBJ36A, 1.5KE36ARL4G delivers 2.5× higher surge power and UL 497B compliance for safety-critical isolation; versus 1.5KE36CA, it eliminates reverse conduction risk on DC rails while retaining identical clamping performance and certification.
Availability
1.5KE36ARL4G is available at Aetrix Electronics and suitable for industrial power supply protection, RS-485 communication line hardening, and medical equipment input safeguarding requiring stable component supply and long-term lifecycle support.
Supply support for 1.5KE36ARL4G 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 power management, analog, sensors, and discrete devices for automotive, industrial, and cloud power applications.
The 1.5KE Series belongs to ON Semiconductor's Mosorb TVS portfolio, engineered for high-energy transient suppression in harsh environments-designed to replace older 1N6xxx devices with enhanced reliability, tighter parameter distributions, and full UL 497B recognition.
FAQ
What is the working peak reverse voltage (VRWM) of the 1.5KE36ARL4G?
The 1.5KE36ARL4G has a working peak reverse voltage (VRWM) of 30.8 V. This value represents the maximum continuous DC or repetitive peak reverse voltage the device can withstand without exceeding the specified leakage current of 5 µA. It is selected to be slightly below the device's 36 V breakdown voltage (VBR) to ensure reliable blocking during normal operation while allowing sufficient margin for transient clamping.
How does the 1.5KE36ARL4G differ from the bi-directional 1.5KE36CA?
The 1.5KE36ARL4G is unidirectional and conducts only during positive transients on its cathode, whereas the 1.5KE36CA conducts in both directions. Both share identical VRWM (30.8 V), VBR (34.2–37.8 V), and clamping voltage (≤49.9 V @ 30 A), and both carry UL 497B recognition. The 1.5KE36ARL4G is appropriate for DC power rail protection; using it instead of 1.5KE36CA avoids unintended forward conduction in polarized circuits.
Is the 1.5KE36ARL4G certified for safety-critical applications?
Yes, the 1.5KE36ARL4G carries UL 497B recognition (File #E210057, category QVGQ2) for isolated loop circuit protection. This certification covers testing for strike voltage breakdown, endurance conditioning, dielectric withstand, and discharge performance-validating its use in safety-relevant industrial and medical isolation barriers where failure could compromise system integrity.
What is the maximum clamping voltage of the 1.5KE36ARL4G under surge conditions?
The 1.5KE36ARL4G clamps to a maximum of 49.9 V when subjected to a 30 A peak pulse current (IPP) with a 1 ms waveform. This clamping voltage is guaranteed across temperature and manufacturing lot variations, and it defines the upper voltage limit imposed on protected circuitry during worst-case surge events-critical for ensuring compatibility with 50 V-tolerant interface ICs.
Can the 1.5KE36ARL4G be used in surface-mount designs?
No, the 1.5KE36ARL4G uses an axial-leaded Case 41A package and is not compatible with surface-mount assembly processes. For SMT implementations, consider functionally similar alternatives such as SMBJ36A (600 W) or SMCJ36A (1500 W), though neither carries UL 497B recognition. The 1.5KE36ARL4G requires through-hole mounting with proper lead forming and soldering per ON Semiconductor's guidelines (260 °C, 10 s at 1/16″ from case).
1.5KE36ARL4G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- 1.5KE
- Packaging:
- Bulk
- 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):
- 30.5A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201
1.5KE36ARL4G FAQ
1.How can I place an order for 1.5KE36ARL4G through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE36ARL4G 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 1.5KE36ARL4G reliable?
The price and inventory of 1.5KE36ARL4G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE36ARL4G is usually 5 days.
3.What payment methods are accepted for 1.5KE36ARL4G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE36ARL4G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE36ARL4G?
1.5KE36ARL4G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE36ARL4G 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 1.5KE36ARL4G?
For technical support, including 1.5KE36ARL4G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE36ARL4G requirements.
6.How does Aetrix verify that 1.5KE36ARL4G is sourced from the original manufacturer or authorized distributors?
All 1.5KE36ARL4G 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 1.5KE36ARL4G meets industry standards.
7.What is the process for return or replacement of 1.5KE36ARL4G?
All 1.5KE36ARL4G units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE36ARL4G, 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 1.5KE36ARL4G part is unused and in its original packaging.
Return procedure for 1.5KE36ARL4G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE36ARL4G Tags
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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
-
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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