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onsemi 1.5KE30ARL4
- Part No.:
- 1.5KE30ARL4
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
1.5KE30ARL4.pdf
- Description:
- TVS DIODE 25.6VWM 41.4VC AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:4,570
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Product details
Overview
1.5KE30ARL4 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 25.6 V working peak reverse voltage (VRWM), 30 V nominal breakdown voltage (VBR), 41.4 V maximum clamping voltage (VC) at 36 A peak pulse current (IPP), and sub-1 ns response time - deployed in power supplies, industrial controls, and medical equipment input stages.
For engineers reviewing the 1.5KE30ARL4 datasheet, pinout, applications, or equivalent options, key selection criteria include VRWM margin over operating DC voltage, VC vs. protected IC absolute maximum rating, surge current capability under 1 ms 8.3 ms waveform, UL 497B certification for isolated loop protection, and axial lead (Case 41A) mounting compatibility with through-hole PCB layouts.
Technical Context
This device operates as a voltage-clamped shunt protector: under normal bias it presents <5 µA leakage above VRWM; when transient voltage exceeds VBR (~30 V), it avalanches rapidly to clamp at ≤41.4 V while conducting up to 36 A peak pulse current. Its low dynamic impedance and thermally robust Surmetic axial package enable reliable energy absorption without thermal runaway.
The 1.5KE30ARL4 conforms to JEDEC standard 1N6282AG and meets UL 497B for isolated loop circuit protection. Its 0.097 %/°C VBR temperature coefficient ensures stable breakdown across −65°C to +175°C operating range, and its Pb-free construction complies with RoHS Directive 2011/65/EU.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500 W @ 1 ms - absorbs single high-energy transients without failure |
| Working Peak Reverse Voltage (VRWM) | 25.6 V - sets minimum system DC operating voltage threshold before conduction |
| Breakdown Voltage (VBR) | 30 V (nominal) @ 1 mA test current - defines precise avalanche onset point |
| Clamping Voltage (VC) | 41.4 V @ 36 A IPP - maximum voltage seen by protected circuit during worst-case surge |
| Leakage Current (IR) | <5 µA @ 25.6 V - negligible standby power loss and signal distortion |
| Response Time | <1 ns - enables protection of fast-edge digital and analog circuits |
| ESD Rating | Class 3 (>16 kV HBM) - withstands human-body-model electrostatic discharge events |
Pinout & Package
1.5KE30ARL4 uses an axial-leaded Surmetic plastic package (Case 41A), with cathode indicated by a polarity band. Leads are tin-plated copper, solderable at 260°C for 10 seconds at 1/16″ from case. Mounting position is unrestricted.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to circuit ground or lowest potential node in unidirectional clamping configuration |
| Cathode | High-side transient sink | Connected to protected line (e.g., DC input, signal rail); conducts surge current to ground when voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| UL 497B Recognition | Validated for isolated loop circuit protection - satisfies safety compliance in telecom and industrial interfaces |
| 1500 W Surge Rating | Handles IEC 61000-4-5 Level 4 (4 kV/2 Ω) surges without degradation when properly mounted |
| Pb-Free Construction | RoHS-compliant materials and plating - supports environmental compliance and lead-free reflow/soldering processes |
| Low Clamping Ratio (VC/VBR) | 1.38 - tight voltage control minimizes stress on downstream CMOS/MOS/Bipolar ICs |
| Wide Operating Temperature | −65°C to +175°C - suitable for under-hood automotive, industrial motor drives, and outdoor power systems |
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 load dump and relay coil flyback. IC Role / Device Role / Timing Role: Unidirectional shunt TVS diode placed between input rail and chassis ground to clamp transients before they reach upstream rectifier and regulator ICs. Use Value: Limits voltage excursion to ≤41.4 V during 36 A surge, protecting 36 V-rated input capacitors and 40 V max-rated MOSFETs in primary-side switcher. |
Use Scenario: Front-end analog sensor interface in portable ultrasound device subject to hospital-grade ESD events per IEC 61000-4-2. IC Role / Device Role / Timing Role: Primary-level transient suppressor on differential signal lines feeding ADC front-end, placed immediately after connector. Use Value: Sub-1 ns response and Class 3 HBM rating prevent latch-up or gate oxide damage in precision op-amps and SAR ADCs operating at ±15 V rails. |
| Telecom Line Interface Protection | Process Control Signal Conditioning |
Use Scenario: Isolated RS-485 bus termination in building automation node connected to long outdoor runs vulnerable to induced lightning surges. IC Role / Device Role / Timing Role: UL 497B-certified TVS on each data line (A/B) referenced to isolated ground plane, downstream of isolation barrier. Use Value: Enables compliance with ANSI/TIA-968-B surge immunity requirements while maintaining signal integrity below 10 Mbps due to low capacitance (~100 pF). |
Use Scenario: 4–20 mA current loop transmitter output stage interfacing with hazardous-area barriers in chemical plant DCS. IC Role / Device Role / Timing Role: Overvoltage clamp on loop supply rail to protect intrinsically safe barrier ICs and precision current-sense resistors. Use Value: 25.6 V VRWM aligns with 24 V loop supply headroom; 41.4 V VC prevents exceedance of 44 V absolute max rating on common IS barrier controllers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ30A | Surface-mount SMB package; 30 V VBR; 48.4 V VC @ 31.1 A; lower 600 W PPK rating | Requires PCB redesign for SMT layout; better suited for space-constrained consumer electronics | Select when board real estate is limited and surge duty is less severe than industrial 1.5 kW requirement |
| 1.5KE30A | Same electrical specs and Case 41A package; differs only in packaging format (bulk box vs. tape & reel) | No functional or layout impact; identical performance and mounting | Choose for manual assembly or low-volume prototyping where tape-and-reel handling is unnecessary |
Compared with SMBJ30A, the 1.5KE30ARL4 delivers 2.5× higher surge power handling and axial-lead mechanical robustness for high-vibration environments; compared with 1.5KE30A, it offers automated pick-and-place compatibility via 1500-unit tape-and-reel packaging while retaining identical protection characteristics.
Availability
1.5KE30ARL4 is available at Aetrix Electronics and suitable for industrial power supplies, medical diagnostic equipment, telecom infrastructure, and process control systems requiring stable component supply and long-term lifecycle support.
Supply support for 1.5KE30ARL4 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 onsemi) is a global semiconductor supplier specializing in energy-efficient power management, analog, sensors, and connectivity solutions for automotive, industrial, cloud, and IoT applications.
The 1.5KE30ARL4 belongs to the 1.5KE series of Mosorb™ transient voltage suppressors - engineered for high-reliability clamping in harsh electromagnetic environments where robust surge immunity and safety certification are mandatory.
FAQ
What is the clamping voltage of the 1.5KE30ARL4 under maximum rated surge current?
The 1.5KE30ARL4 has a maximum clamping voltage (VC) of 41.4 V when subjected to its rated peak pulse current (IPP) of 36 A, measured using the standard 1 ms exponential waveform per Figure 5 in the datasheet. This value defines the upper voltage limit imposed on protected circuitry during transient events and must be verified against the absolute maximum ratings of downstream components to ensure reliability.
Is the 1.5KE30ARL4 RoHS compliant and lead-free?
Yes, the 1.5KE30ARL4 is Pb-free and RoHS compliant, as confirmed by the "G" suffix in its ordering code and explicit statement in the datasheet's Mechanical Characteristics section. Its Surmetic axial package uses lead-free terminations and thermosetting plastic encapsulation, meeting EU Directive 2011/65/EU requirements without exemptions.
Does the 1.5KE30ARL4 have UL recognition, and for what standard?
Yes, the 1.5KE30ARL4 carries UL recognition under standard UL 497B for isolated loop circuit protection, as stated in the Application Notes section and confirmed in File #E210057. This certification validates its suitability in telecom, industrial, and medical applications requiring third-party safety assurance for transient suppression circuits.
How does the 1.5KE30ARL4 differ from the 1.5KE30A variant?
The 1.5KE30ARL4 and 1.5KE30A share identical electrical specifications, thermal performance, and Case 41A axial package. The sole difference is packaging: 1.5KE30ARL4 is supplied in 1500-unit tape-and-reel format optimized for automated assembly, whereas 1.5KE30A is offered in 500-unit bulk boxes for manual or low-volume use.
What is the maximum steady-state power dissipation for the 1.5KE30ARL4 at 75°C lead temperature?
The 1.5KE30ARL4 has a steady-state power dissipation (PD) rating of 5.0 W at TL = 75°C with 3/8″ lead length, derating linearly at 20 mW/°C above that temperature. This rating applies only to continuous DC or low-frequency reverse bias conditions - not transient surge events - and must be calculated using actual thermal path resistance in the end application.
1.5KE30ARL4 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):
- 25.6V
- Voltage - Breakdown (Min):
- 28.5V
- Voltage - Clamping (Max) @ Ipp:
- 41.4V
- Current - Peak Pulse (10/1000µs):
- 36A
- 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
1.5KE30ARL4 FAQ
1.How can I place an order for 1.5KE30ARL4 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE30ARL4 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 1.5KE30ARL4 reliable?
The price and inventory of 1.5KE30ARL4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE30ARL4 is usually 5 days.
3.What payment methods are accepted for 1.5KE30ARL4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE30ARL4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE30ARL4?
1.5KE30ARL4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE30ARL4 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 1.5KE30ARL4?
For technical support, including 1.5KE30ARL4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE30ARL4 requirements.
6.How does Aetrix verify that 1.5KE30ARL4 is sourced from the original manufacturer or authorized distributors?
All 1.5KE30ARL4 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 1.5KE30ARL4 meets industry standards.
7.What is the process for return or replacement of 1.5KE30ARL4?
All 1.5KE30ARL4 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE30ARL4, 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 1.5KE30ARL4 part is unused and in its original packaging.
Return procedure for 1.5KE30ARL4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE30ARL4 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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D5V0H1B2LP-7B
Diodes Incorporated
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D5V0P1B2LP-7B
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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