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onsemi 1.5KE180ARL4
- Part No.:
- 1.5KE180ARL4
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- -
- Datasheet:
-
1.5KE180ARL4.pdf
- Description:
- TRANS VOLTAGE SUPPRESSOR DIODE
- Quantity:
- Payment:
- Shipping:
Inventory:4,500
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Product details
Overview
1.5KE180ARL4 from ON Semiconductor is a unidirectional 1500 W transient voltage suppressor (TVS) diode designed for parallel clamping protection of sensitive electronics against ESD, lightning-induced surges, and inductive switching transients. It features a working peak reverse voltage (VRWM) of 154 V, breakdown voltage (VBR) of 171–189 V at 1 mA test current, clamping voltage (VC) of 246 V at 6.1 A peak pulse current, and sub-nanosecond response time. It is widely deployed in industrial power supplies and telecom interface circuits requiring robust overvoltage immunity.
For engineers reviewing the 1.5KE180ARL4 datasheet, pinout, applications, or equivalent options, key selection criteria include VRWM margin above operating DC bus, VC vs. protected IC's absolute maximum rating, surge current capability under IEC 61000-4-5 waveform, and axial-leaded mechanical fit in high-reliability board-level protection layouts.
Technical Context
This device operates as a silicon avalanche diode with sharp Zener-like breakdown characteristics, enabling precise voltage clamping during transient events. Its unidirectional polarity supports DC-biased signal lines and power rails where reverse conduction must be blocked until clamping threshold is exceeded.
Thermal design relies on junction-to-lead resistance (RJL = 20 °C/W) and derating curves for ambient/lead temperature - steady-state power drops to 5.0 W at TL = 75 °C, with full 1500 W only valid for nonrepetitive 1 ms pulses at TA = 25 °C. The Surmetic axial package ensures void-free molding and solderability per J-STD-020.
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 without failure |
| Working Peak Reverse Voltage (VRWM) | 154 V - maximum continuous DC or peak AC voltage the device blocks before clamping begins |
| Breakdown Voltage (VBR) | 171–189 V @ 1 mA - tight tolerance window ensures predictable turn-on across production lots |
| Clamping Voltage (VC) | 246 V @ 6.1 A - defines worst-case voltage seen by downstream circuitry during specified surge |
| Leakage Current (IR) | <5 µA @ 154 V - negligible standby power loss and no measurable loading on protected line |
| Response Time | <1 ns - fast enough to clamp ESD (IEC 61000-4-2) and fast-rising transients before damage occurs |
| ESD Rating | Class 3 (>16 kV HBM) - exceeds JEDEC JS-001 requirements for system-level ESD robustness |
Pinout & Package
1.5KE180ARL4 uses an axial-leaded Surmetic plastic package (Case 41A), with cathode indicated by a polarity band. Leads are tin-plated copper, rated for 230 °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; completes clamping path during reverse surge |
| Cathode | High-side transient input terminal | Connected to protected line (e.g., +12 V rail); conducts when voltage exceeds VRWM |
Key Features
| Feature | Design Value |
|---|---|
| UL 497B Recognition | Qualified for isolated loop circuit protection - enables use in certified telecom and industrial safety-critical interfaces |
| Pb-Free Packaging | RoHS-compliant Surmetic case with G-suffix option - meets global environmental compliance without performance trade-off |
| Low Zener Impedance | Ensures stable clamping voltage under varying surge currents - minimizes voltage overshoot during multi-pulse stress |
| High Surge Capability | Rated for 200 A forward surge (8.3 ms half-sine) - supports backup protection in high-current power entry stages |
| Corrosion-Resistant Finish | All external surfaces resist oxidation; leads remain solderable after long-term storage or humid environments |
Applications
| Industrial Power Supply Input Protection | Telecom Line Interface Protection |
|---|---|
|
Use Scenario: Protects AC/DC front-end rectifiers and bulk capacitors from lightning-induced surges on 120/240 VAC mains inputs. IC Role / Device Role / Timing Role: Unidirectional TVS placed across DC bus after bridge rectifier to clamp differential-mode transients. Use Value: Limits transient voltage to ≤246 V, preventing overvoltage failure of 400 V-rated electrolytic capacitors and MOSFETs. |
Use Scenario: Shields RS-485 transceivers and isolation transformers from induced surges on outdoor data lines. IC Role / Device Role / Timing Role: Clamps common-mode surges between signal pair and ground in telecom demarcation equipment. Use Value: Maintains signal integrity by suppressing >1 kV transients within <1 ns, avoiding latch-up in 3.3 V logic interfaces. |
| Medical Equipment Power Entry | Process Control Sensor Signal Conditioning |
|
Use Scenario: Guards auxiliary 24 VDC power inputs in diagnostic imaging systems against ESD and load dump events. IC Role / Device Role / Timing Role: Mounted directly at connector entry point to shunt energy before reaching DC/DC converters. Use Value: Provides Class 3 ESD immunity (>16 kV HBM) while adding <5 µA leakage - critical for low-power standby modes. |
Use Scenario: Protects 4–20 mA current loop receivers from field wiring transients in factory automation PLC modules. IC Role / Device Role / Timing Role: Placed across loop terminals to clamp surges without disrupting precision analog measurement. Use Value: Clamps to 246 V with minimal capacitance - avoids signal distortion in bandwidth-sensitive 10 kHz sensor channels. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ180A | Surface-mount SMB package; lower 600 W peak power; VRWM = 154 V; VC = 274 V @ 3.7 A | Requires PCB rework for SMT layout; better suited for space-constrained consumer boards than industrial chassis mounts | Select when automated assembly and board density outweigh need for 1500 W surge handling |
| 1.5SMC180A | Surface-mount SMC package; same 1500 W rating; VRWM = 154 V; VC = 246 V @ 6.1 A; identical electrical specs but different thermal path | Higher thermal resistance (RθJA ≈ 50 °C/W vs. axial RJL = 20 °C/W); less effective in high-ambient industrial enclosures | Choose only if existing SMC footprint exists and lead temperature stays below 60 °C |
Compared with 1.5KE180ARL4, SMBJ180A trades surge capacity for compactness and manufacturability, while 1.5SMC180A matches power rating but delivers inferior thermal performance in convection-limited environments - axial leaded 1.5KE180ARL4 remains optimal for high-reliability, high-temperature, high-surge industrial deployments.
Availability
1.5KE180ARL4 is available at Aetrix Electronics and suitable for industrial power supplies, telecom infrastructure equipment, medical device power entry, and process control systems requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for 1.5KE180ARL4 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 IoT applications.
The 1.5KE series was engineered specifically for high-reliability, high-surge industrial protection - emphasizing robust axial packaging, UL 497B certification, and tight VBR tolerances to ensure consistent clamping behavior across harsh operating conditions.
FAQ
What is the clamping voltage of the 1.5KE180ARL4 under standard surge conditions?
The 1.5KE180ARL4 has a maximum clamping voltage (VC) of 246 V when subjected to its rated peak pulse current of 6.1 A, measured using the 1 ms exponential waveform defined in Figure 5 of the datasheet. This value is guaranteed across temperature and production lot, ensuring predictable protection margins for downstream components rated up to 250 V.
Is the 1.5KE180ARL4 RoHS compliant and lead-free?
Yes, the 1.5KE180ARL4 is offered in a Pb-free Surmetic axial package, indicated by the "G" suffix in alternate part numbers (e.g., 1.5KE180ARG). The device complies with RoHS Directive 2011/65/EU and meets J-STD-609 moisture sensitivity and solderability requirements without compromising surge performance or thermal reliability.
Can the 1.5KE180ARL4 be used in bidirectional protection circuits?
No - the 1.5KE180ARL4 is a unidirectional TVS diode and conducts only in reverse bias above VRWM. For bidirectional protection (e.g., AC lines or data pairs), a dedicated bidirectional variant such as 1.5KE180CA must be used. Using 1.5KE180ARL4 in AC applications risks forward conduction and thermal runaway.
What is the maximum steady-state power dissipation for the 1.5KE180ARL4?
The 1.5KE180ARL4 dissipates up to 5.0 W continuously when lead temperature (TL) is held at ≤75 °C, with linear derating of 20 mW/°C above that point. This limit reflects thermal constraints of the axial Surmetic package and must be verified using actual board layout, airflow, and mounting conditions - not ambient temperature alone.
Does the 1.5KE180ARL4 meet UL 497B certification?
Yes, the 1.5KE180ARL4 is UL Recognized under file E210057 for protector classification QVGV2 per UL 497B, covering isolated loop circuit protection. This certification validates performance in strike voltage breakdown, endurance conditioning, dielectric withstand, and discharge testing - confirming suitability for safety-critical telecom and industrial interfaces.
1.5KE180ARL4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- -
- Series:
- *
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Type:
- -
- Unidirectional Channels:
- -
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- -
- Voltage - Breakdown (Min):
- -
- Voltage - Clamping (Max) @ Ipp:
- -
- Current - Peak Pulse (10/1000µs):
- -
- Power - Peak Pulse:
- -
- Power Line Protection:
- -
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
1.5KE180ARL4 FAQ
1.How can I place an order for 1.5KE180ARL4 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE180ARL4 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 1.5KE180ARL4 reliable?
The price and inventory of 1.5KE180ARL4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE180ARL4 is usually 5 days.
3.What payment methods are accepted for 1.5KE180ARL4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE180ARL4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE180ARL4?
1.5KE180ARL4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE180ARL4 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 1.5KE180ARL4?
For technical support, including 1.5KE180ARL4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE180ARL4 requirements.
6.How does Aetrix verify that 1.5KE180ARL4 is sourced from the original manufacturer or authorized distributors?
All 1.5KE180ARL4 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 1.5KE180ARL4 meets industry standards.
7.What is the process for return or replacement of 1.5KE180ARL4?
All 1.5KE180ARL4 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE180ARL4, 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 1.5KE180ARL4 part is unused and in its original packaging.
Return procedure for 1.5KE180ARL4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE180ARL4 Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
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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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