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onsemi 1.5KE47ARL4G
- Part No.:
- 1.5KE47ARL4G
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
1.5KE47ARL4G.pdf
- Description:
- TVS DIODE 40.2VWM 64.8VC AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:1,442
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Product details
Overview
1.5KE47ARL4G from ON Semiconductor is a unidirectional 1500 W transient voltage suppressor (TVS) diode designed for parallel clamping protection of sensitive electronics. It features a 40.2 V working peak reverse voltage (VRWM), 47 V breakdown voltage (VBR) at 1 mA, and clamps to 64.8 V at 23.2 A peak pulse current (IPP), making it suitable for power supply input surge protection in industrial equipment.
For engineers reviewing the 1.5KE47ARL4G 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, surge current capability under IEC 61000-4-5 waveforms, and UL 497B recognition for isolated loop circuit compliance.
Technical Context
This device operates as a silicon avalanche diode in reverse-biased mode, entering conduction when transient voltage exceeds its breakdown threshold. Its low dynamic impedance ensures stable clamping during 1 ms 8/20 µs surges, and sub-nanosecond response time minimizes overshoot before clamping engages.
Designed for axial-lead mounting in Surmetic plastic case 41A, it delivers 1500 W non-repetitive peak power dissipation at TL ≤ 25°C with thermal resistance of 20°C/W junction-to-lead. It meets Class 3 ESD immunity (>16 kV HBM) and is UL 497B recognized for isolated loop circuit protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 40.2 V - Maximum continuous reverse operating voltage; must be ≥ system DC rail to avoid leakage-induced heating |
| VBR @ IT=1 mA | 44.7–49.4 V - Breakdown range defining turn-on threshold; used to verify margin over VRWM |
| VC @ IPP=23.2 A | 64.8 V - Clamped voltage during 1 ms surge; determines max stress on downstream components |
| IPP | 23.2 A - Peak pulse current supported at 1 ms; correlates to IEC 61000-4-5 Level 4 (4 kV) surge capability |
| IR @ VRWM | <5 µA - Reverse leakage at rated working voltage; ensures minimal standby power loss |
| Response Time | <1 ns - Enables suppression before transient energy couples into protected circuitry |
| UL Recognition | UL 497B QVGQ2 - Certified for use in isolated loop telecom and industrial signal interfaces |
Pinout & Package
1.5KE47ARL4G uses an axial-leaded Surmetic plastic package (Case 41A), with cathode identified by a polarity band. Leads are tin-plated copper, solderable at 260°C for 10 seconds at 1/16 inch from case body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Ground reference terminal | Connected to system ground or low-impedance return path; defines clamping reference point |
| Cathode | Protected line terminal | Connected to line being protected (e.g., +VDC input); polarity band marks this terminal |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Supports robust IEC 61000-4-5 surge immunity without derating in standard PCB layouts |
| Clamp voltage ≤64.8 V at 23.2 A | Provides ≥15% margin below typical 75 V absolute maximum rating of 100 V-rated MOSFETs and controllers |
| UL 497B certification | Validates suitability for telecom and industrial isolated interface protection without additional safety testing |
| ESD Class 3 (>16 kV HBM) | Eliminates need for supplemental ESD diodes in front-end protection stages |
| Pb-free axial package (RL4G) | Complies with RoHS and JEDEC J-STD-020 reflow profiles for automated assembly |
Applications
| Industrial Power Supply Input Protection | Telecom Line Interface Surge Suppression |
|---|---|
Use Scenario: AC/DC power supply front-end subjected to lightning-induced surges on 48 V DC distribution lines. IC Role / Device Role / Timing Role: Unidirectional TVS placed across input terminals to clamp transients before they reach rectifier, bulk capacitor, and controller IC. Use Value: Limits transient voltage to 64.8 V, protecting 75 V-rated primary-side controllers and MOSFETs while surviving 4 kV IEC 61000-4-5 surges. | Use Scenario: RS-485 or analog phone line interface exposed to induced surges in building wiring. IC Role / Device Role / Timing Role: TVS connected between line pair and ground to shunt common-mode transients while preserving signal integrity. Use Value: UL 497B recognition confirms compliance for isolated loop protection; low capacitance avoids signal distortion at 10 Mbps RS-485 rates. |
| Medical Equipment ESD Protection | Process Control Signal Conditioning |
Use Scenario: Front-panel USB or sensor input on diagnostic imaging equipment requiring >16 kV HBM ESD immunity. IC Role / Device Role / Timing Role: Primary-level ESD clamp on I/O lines, upstream of TVS arrays or integrated protection ICs. Use Value: Meets IEC 61000-4-2 Level 4 (15 kV contact) without secondary clamping; sub-ns response prevents latch-up in CMOS interface ICs. | Use Scenario: 4–20 mA current loop transmitter in factory automation subject to cable discharge events. IC Role / Device Role / Timing Role: Bidirectional protection not required; unidirectional 1.5KE47ARL4G guards positive rail against positive-going transients only. Use Value: VRWM = 40.2 V aligns with 36 V max loop supply, ensuring no conduction during normal operation while clamping 64.8 V surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ43A | Surface-mount SMB package; 43 V VRWM; 69.4 V VC @ 21.7 A; lower peak power (600 W) | Requires PCB redesign for SMT layout; better suited for space-constrained consumer electronics | Select when board area is limited and surge requirements are ≤Level 3 (2 kV) |
| 1.5KE47A | Same electrical specs and axial package; differs only in packaging format (bulk vs. tape-and-reel) | No functional or performance difference; identical thermal and electrical behavior | Choose for manual assembly or low-volume prototyping where reel handling is unnecessary |
Compared with SMBJ43A, 1.5KE47ARL4G offers 2.5× higher surge power and axial-lead ease-of-rework; compared with 1.5KE47A, it provides optimized logistics for automated pick-and-place while maintaining identical protection performance.
Availability
1.5KE47ARL4G is available at Aetrix Electronics and suitable for industrial power supplies, telecom infrastructure, medical diagnostics, and process control systems requiring stable component supply and long-term lifecycle support.
Supply support for 1.5KE47ARL4G 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 supplier delivering energy-efficient, high-performance silicon solutions for automotive, industrial, cloud computing, and IoT applications.
The 1.5KExxA Series was engineered specifically for high-energy transient suppression in harsh environments, emphasizing reliability, UL certification, and cost-effective axial packaging for legacy and new industrial designs.
FAQ
What is the clamping voltage of the 1.5KE47ARL4G under maximum surge conditions?
The 1.5KE47ARL4G clamps to 64.8 V at its rated peak pulse current of 23.2 A (1 ms exponential decay waveform per Figure 5). This value is guaranteed maximum and represents the highest voltage seen across the device during standardized surge testing - critical for verifying margin against downstream component absolute maximum ratings in designs using the 1.5KE47ARL4G.
Does the 1.5KE47ARL4G meet UL safety standards for industrial isolation?
Yes, the 1.5KE47ARL4G carries UL 497B recognition (File #E210057, category QVGQ2) for isolated loop circuit protection. This certification covers dielectric withstand, endurance conditioning, and strike voltage breakdown tests - confirming its suitability for telecom interfaces, PLC analog inputs, and other safety-critical industrial isolation barriers where the 1.5KE47ARL4G is deployed.
How does the 1.5KE47ARL4G differ from the 1.5KE47AG variant?
The 1.5KE47ARL4G and 1.5KE47AG share identical electrical specifications, package dimensions, and thermal characteristics. The sole difference is packaging: RL4G denotes 1500-unit tape-and-reel format optimized for automated assembly, while AG indicates 500-unit bulk box packaging for manual or low-volume use - both contain the same 1.5KE47ARL4G silicon and marking.
Can the 1.5KE47ARL4G be used for bidirectional transient protection?
No, the 1.5KE47ARL4G is a unidirectional TVS diode intended only for clamping positive transients on a positively referenced line. For bidirectional protection (e.g., AC lines or differential data pairs), a dedicated bidirectional device such as P6KE47CA or SMAJ47CA must be used - the 1.5KE47ARL4G lacks symmetrical breakdown and will conduct continuously if reverse-biased beyond VRWM.
What is the maximum allowable lead temperature during soldering of the 1.5KE47ARL4G?
The 1.5KE47ARL4G supports a maximum lead temperature of 260°C for 10 seconds at a distance of 1/16 inch (1.6 mm) from the plastic case body. This specification ensures reliable solder joint formation without damaging internal die bonds or degrading the Surmetic plastic encapsulant - consistent with IPC-J-STD-020 moisture sensitivity level and Pb-free reflow profiles applicable to the 1.5KE47ARL4G.
1.5KE47ARL4G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- DO-201AD, Axial
- Series:
- Mosorb™
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 40.2V
- Voltage - Breakdown (Min):
- 44.7V
- Voltage - Clamping (Max) @ Ipp:
- 64.8V
- Current - Peak Pulse (10/1000µs):
- 23.2A
- 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
1.5KE47ARL4G FAQ
1.How can I place an order for 1.5KE47ARL4G through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE47ARL4G 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 1.5KE47ARL4G reliable?
The price and inventory of 1.5KE47ARL4G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE47ARL4G is usually 5 days.
3.What payment methods are accepted for 1.5KE47ARL4G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE47ARL4G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE47ARL4G?
1.5KE47ARL4G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE47ARL4G 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 1.5KE47ARL4G?
For technical support, including 1.5KE47ARL4G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE47ARL4G requirements.
6.How does Aetrix verify that 1.5KE47ARL4G is sourced from the original manufacturer or authorized distributors?
All 1.5KE47ARL4G 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 1.5KE47ARL4G meets industry standards.
7.What is the process for return or replacement of 1.5KE47ARL4G?
All 1.5KE47ARL4G units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE47ARL4G, 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 1.5KE47ARL4G part is unused and in its original packaging.
Return procedure for 1.5KE47ARL4G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE47ARL4G 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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D5V0L1B2WS-7
Diodes Incorporated
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