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onsemi 1.5KE15ARL4
- Part No.:
- 1.5KE15ARL4
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
1.5KE15ARL4.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:6,949
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Product details
Overview
1.5KE15ARL4 from ON Semiconductor is a unidirectional 1500 W transient voltage suppressor (TVS) diode designed for parallel clamping protection of sensitive electronics. It features a 12.8 V working peak reverse voltage (VRWM), 15 V breakdown voltage (VBR) at 1 mA test current, and clamps to 21.2 V at 71 A peak pulse current, making it suitable for power supply input surge protection in industrial equipment.
For engineers reviewing the 1.5KE15ARL4 datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage margin vs. protected IC's absolute maximum rating, VRWM compatibility with DC bus voltage, UL 497B certification for isolated loop circuits, and axial lead (Case 41A) mounting suitability for through-hole PCB layouts.
Technical Context
The 1.5KE15ARL4 operates as a Zener-based avalanche diode, entering conduction when reverse voltage exceeds its specified VBR of 14.3–15.8 V. Its low dynamic impedance and sub-1 ns response time enable effective suppression of fast transients such as ESD (Class 3 >16 kV HBM) and lightning-induced surges.
It is rated for 1500 W non-repetitive peak pulse power at 1 ms, with thermal resistance of 20 °C/W (junction-to-lead), and supports steady-state dissipation up to 5.0 W at TL ≤ 75°C. The device is Pb-free, housed in a void-free Surmetic plastic package (Case 41A) with cathode polarity band marking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500 W @ 1 ms - withstands high-energy surges without failure |
| Working Peak Reverse Voltage (VRWM) | 12.8 V - maximum continuous reverse voltage before clamping begins |
| Breakdown Voltage (VBR) | 14.3–15.8 V @ 1 mA - precise avalanche onset threshold for predictable clamping |
| Clamping Voltage (VC) | 21.2 V @ 71 A IPP - limits transient voltage seen by downstream circuitry |
| Leakage Current (IR) | <5 µA @ 12.8 V - negligible standby power loss and signal interference |
| Response Time | <1 ns - suppresses fast-rising transients before protected components are stressed |
| ESD Rating | Class 3 (>16 kV HBM) - meets stringent electrostatic discharge immunity requirements |
Pinout & Package
1.5KE15ARL4 uses an axial-leaded, bi-terminal package (Case 41A, Surmetic plastic). Cathode is marked by a colored band; anode is unmarked. Leads are tin-plated copper, solderable at 260°C for 10 seconds at 1/16″ from case.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction; connected to system ground or low-side reference | Provides return path for surge current during clamping; must be routed with minimal inductance |
| Cathode | Protected line connection; marked by polarity band | Connected to the line being protected (e.g., +12 V rail); clamps to anode when overvoltage occurs |
Key Features
| Feature | Design Value |
|---|---|
| UL 497B Recognition | Validated for isolated loop circuit protection per safety standard QVGQ2, enabling use in telecom and medical isolation barriers |
| Low Clamping Ratio (VC/VBR) | ~1.41 - tight voltage margin between breakdown and clamp ensures robust protection without overdesigning downstream TVS stages |
| Pb-Free Surmetic Package | RoHS-compliant axial lead construction with corrosion-resistant finish and controlled lead temperature tolerance (260°C) |
| High Surge Current Capability | 71 A peak pulse current - handles IEC 61000-4-5 Level 4 surges (4 kV, 2 Ω source) on 12 V lines |
Applications
| Industrial Power Supply Input Protection | Medical Equipment ESD Shielding |
|---|---|
Use Scenario: 12 V DC input stage of programmable logic controller (PLC) power module exposed to load dump and inductive switching transients. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed across input terminals to clamp surges before they reach upstream rectifier and downstream DC/DC converter. Use Value: Limits transient voltage to 21.2 V, staying below 24 V absolute max rating of input-stage MOSFETs and ensuring no latch-up or gate oxide damage. | Use Scenario: Signal line interface between patient monitor front-end sensor and isolated data acquisition board. IC Role / Device Role / Timing Role: UL 497B-certified TVS protecting isolated analog inputs from ESD events during clinical handling. Use Value: Provides Class 3 HBM ESD immunity while maintaining galvanic isolation integrity-no leakage-induced offset drift in µV-level bio-signal paths. |
| Telecom Line Card Surge Suppression | Automotive Aftermarket Power Adapter Protection |
Use Scenario: +12 V bias rail on Ethernet-over-coax (EoC) line card subject to induced lightning surges in outdoor cabinet installations. IC Role / Device Role / Timing Role: Primary clamping device on DC feed line, coordinated with gas discharge tube (GDT) front-end for staged protection. Use Value: Fast <1 ns response captures initial surge edge; 1500 W rating absorbs residual energy after GDT fires, preventing secondary overstress. | Use Scenario: 12 V automotive cigarette-lighter adapter powering dashcam or GPS unit, exposed to ISO 7637-2 pulse 1 and pulse 3a/b transients. IC Role / Device Role / Timing Role: Standalone unidirectional TVS on input filter stage, directly across bulk capacitor terminals. Use Value: Clamps negative-going transients to safe levels without forward conduction; VRWM ≥ 12.8 V avoids false triggering during cold-crank (6.5 V) or load-dump (up to 17 V) conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15A | Surface-mount SMB package; lower 600 W peak power; same 15 V VBR range but higher VC (24.4 V @ 24.4 A) | Requires PCB rework for SMT layout; better suited for space-constrained consumer electronics vs. industrial through-hole designs | Select SMBJ15A only if board real estate is constrained and surge energy is limited to IEC 61000-4-5 Level 2 |
| 1.5KE15A | Same axial package and electrical specs, but supplied in 500-unit box instead of 1500-unit tape-and-reel (RL4) | No functional difference; identical performance and footprint-only packaging and logistics distinction | Choose 1.5KE15A for low-volume prototyping or manual assembly; 1.5KE15ARL4 preferred for automated SMT line feeding |
Compared with SMBJ15A, 1.5KE15ARL4 delivers 2.5× higher surge energy handling and axial-leaded mechanical robustness for high-vibration environments; versus 1.5KE15A, it offers identical protection performance with optimized reel packaging for high-volume production throughput.
Availability
1.5KE15ARL4 is available at Aetrix Electronics and suitable for industrial power supplies, medical instrumentation, telecom infrastructure, and automotive aftermarket electronics requiring stable component supply and long-term obsolescence management.
Supply support for 1.5KE15ARL4 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, with emphasis on energy-efficient and reliable solutions for automotive, industrial, and cloud power systems.
The 1.5KE15ARL4 belongs to ON Semiconductor's Mosorb™ 1.5KE series of high-power unidirectional TVS diodes, engineered specifically for robust, cost-effective surge protection in harsh industrial and communications environments.
FAQ
What is the clamping voltage of the 1.5KE15ARL4 under maximum surge conditions?
The 1.5KE15ARL4 clamps to a maximum of 21.2 V when subjected to its rated peak pulse current of 71 A (1 ms exponential waveform). This value is measured per Figure 5 in the official ON Semiconductor datasheet and represents the upper limit of voltage imposed on protected circuitry during worst-case transient events.
Is the 1.5KE15ARL4 RoHS compliant and halogen-free?
Yes, the 1.5KE15ARL4 is RoHS compliant and Pb-free, as confirmed by the "G" suffix in its ordering code and ON Semiconductor's Surmetic package documentation. It meets JEDEC J-STD-020 moisture sensitivity level (MSL) requirements and contains no halogenated flame retardants per IPC-4101D specifications.
Can the 1.5KE15ARL4 be used in bidirectional protection configurations?
No, the 1.5KE15ARL4 is strictly unidirectional and must be oriented with cathode toward the protected line. For bidirectional protection, two 1.5KE15ARL4 devices may be connected in series opposing configuration, but this is not recommended-instead, use purpose-built bidirectional TVS parts like 1.5KE15CA.
What is the maximum operating temperature range for the 1.5KE15ARL4?
The 1.5KE15ARL4 is rated for operation and storage from −65 °C to +175 °C. Its junction-to-lead thermal resistance is 20 °C/W, and steady-state power dissipation is derated linearly above 75 °C lead temperature, down to zero at 175 °C.
Does the 1.5KE15ARL4 meet UL 497B certification for isolated circuits?
Yes, the 1.5KE15ARL4 is UL Recognized under file E210057, category QVGQ2, for protector applications per UL 497B. This certification covers dielectric withstand, endurance conditioning, and strike voltage breakdown testing-validating its use in telecom and medical isolated loop interfaces.
1.5KE15ARL4 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):
- 12.8V
- Voltage - Breakdown (Min):
- 14.3V
- Voltage - Clamping (Max) @ Ipp:
- 21.2V
- Current - Peak Pulse (10/1000µs):
- 71A
- 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
1.5KE15ARL4 FAQ
1.How can I place an order for 1.5KE15ARL4 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE15ARL4 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 1.5KE15ARL4 reliable?
The price and inventory of 1.5KE15ARL4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE15ARL4 is usually 5 days.
3.What payment methods are accepted for 1.5KE15ARL4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE15ARL4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE15ARL4?
1.5KE15ARL4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE15ARL4 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 1.5KE15ARL4?
For technical support, including 1.5KE15ARL4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE15ARL4 requirements.
6.How does Aetrix verify that 1.5KE15ARL4 is sourced from the original manufacturer or authorized distributors?
All 1.5KE15ARL4 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 1.5KE15ARL4 meets industry standards.
7.What is the process for return or replacement of 1.5KE15ARL4?
All 1.5KE15ARL4 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE15ARL4, 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 1.5KE15ARL4 part is unused and in its original packaging.
Return procedure for 1.5KE15ARL4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE15ARL4 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
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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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Diodes Incorporated
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