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onsemi 1.5KE30ARL4G
- Part No.:
- 1.5KE30ARL4G
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- -
- Datasheet:
-
1.5KE30ARL4G.pdf
- Description:
- TVS DIODE 25.6VWM 41.4VC
- Quantity:
- Payment:
- Shipping:
Inventory:1,500
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Product details
Overview
1.5KE30ARL4G 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 V breakdown voltage (VBR = 28.5–31.5 V @ IT = 1 mA), 41.4 V maximum clamping voltage (VC) at 36 A peak pulse current (IPP), and <1 ns response time - deployed in power supplies, industrial controls, and medical equipment input stages.
For engineers reviewing the 1.5KE30ARL4G datasheet, pinout, applications, or equivalent options, key selection criteria include working peak reverse voltage (VRWM = 25.6 V), low zener impedance, UL 497B recognition for isolated loop circuits, and Pb-free axial lead (Case 41A) compatibility with through-hole reflow and wave soldering.
Technical Context
This device operates as a silicon avalanche diode configured in unidirectional mode, leveraging controlled Zener breakdown to clamp transient overvoltages before they reach downstream ICs. Its thermal resistance (RJL = 20 °C/W) and 1500 W peak power rating (1 ms pulse) enable robust single-pulse surge handling without thermal runaway under defined lead temperature limits.
The 1.5KE30ARL4G exhibits low leakage (<5 µA @ VRWM), tight VBR tolerance (±5%), and a temperature coefficient of 0.097 %/°C - ensuring stable clamping performance across −65 °C to +175 °C operating range. Its Surmetic axial package provides void-free molding and corrosion-resistant leads rated for 260 °C soldering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 25.6 V - Maximum continuous reverse operating voltage; must exceed circuit's DC/peak AC rail to avoid leakage-induced power loss |
| VBR @ IT | 28.5–31.5 V @ 1 mA - Confirmed breakdown threshold defining turn-on onset; critical for precise overvoltage trip setting |
| VC @ IPP | 41.4 V @ 36 A - Clamped voltage during worst-case 1 ms surge; determines maximum stress on protected load |
| IPP | 36 A - Peak pulse current capability at VC; defines surge energy absorption limit per IEC 61000-4-5 Level 4 |
| Response Time | <1 ns - Enables suppression of fast-rising transients (e.g., ESD ±15 kV HBM) before IC damage occurs |
| ESD Rating | Class 3 (>16 kV HBM) - Validated immunity to human-body-model electrostatic discharge events |
| UL Recognition | UL 497B - Certified for isolated loop circuit protection in telecom and industrial interfaces |
Pinout & Package
1.5KE30ARL4G uses an axial-leaded, Pb-free Surmetic plastic package (Case 41A), with cathode identified by a polarity band. Leads are corrosion-resistant and solderable at 260 °C for 10 seconds at 1/16″ from case.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to ground or low-impedance return path in unidirectional TVS configuration |
| Cathode | Current exit terminal during reverse clamping | Connected to protected line (e.g., VIN, signal rail); polarity band marks this terminal |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Supports IEC 61000-4-5 surge testing up to 4 kV (2 Ω source) without failure |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage overshoot during clamping, reducing stress on downstream MOSFETs or controllers |
| UL 497B certification | Validates suitability for safety-critical isolated communication ports (e.g., RS-485, CAN bus interfaces) |
| Pb-free Surmetic axial package | Enables RoHS-compliant through-hole assembly with proven thermal cycling reliability and moisture resistance |
| −65 °C to +175 °C operating range | Permits deployment in under-hood automotive modules and industrial motor drives without derating |
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 inductive kickback from relay coils and field wiring surges. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed directly across input terminals to shunt transient energy to ground before it reaches upstream rectifier and regulator ICs. Use Value: Limits transient voltage to ≤41.4 V, preventing latch-up or gate oxide rupture in 36 V-rated input-stage MOSFETs and linear regulators. | Use Scenario: Front-panel USB and serial interface lines on diagnostic imaging equipment subject to operator ESD events in clinical environments. IC Role / Device Role / Timing Role: Board-level ESD suppressor mounted adjacent to connector pins to intercept ±15 kV HBM discharges before reaching USB PHY or UART transceivers. Use Value: Achieves Class 3 ESD immunity while maintaining signal integrity via low capacitance (<100 pF @ 0 V) and sub-ns response. |
| Telecom Line Interface Protection | Process Control Sensor Signal Conditioning |
Use Scenario: Isolated RS-485 data lines in building automation systems connected to long outdoor cable runs vulnerable to lightning-induced surges. IC Role / Device Role / Timing Role: UL 497B-recognized TVS installed on both differential lines relative to isolated ground, forming part of a multi-stage protection network. Use Value: Absorbs 1500 W surge energy while maintaining isolation integrity and meeting IEC 61000-4-5 requirements for Type 3 installations. | Use Scenario: 4–20 mA current loop inputs in distributed control system (DCS) I/O modules interfacing with pressure/temperature transmitters in chemical plants. IC Role / Device Role / Timing Role: Primary overvoltage clamp on loop supply rail, coordinated with series PTC and secondary TVS to handle fault conditions and lightning coupling. Use Value: Withstands repeated 30 A surges without degradation, ensuring long-term reliability in harsh electromagnetic environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ30A | Surface-mount SMB package (vs. axial); lower 600 W peak power; tighter VC = 48.4 V @ 12.3 A | Better suited for space-constrained PCBs but requires layout redesign and lacks UL 497B certification | Select when board area is limited and surge requirements are ≤600 W; verify creepage/clearance for isolation compliance |
| 1.5KE30A | Same electrical specs and Case 41A package; differs only in packaging format (bulk vs. tape-and-reel) | No functional difference; identical performance and mounting | Choose 1.5KE30A for manual prototyping or low-volume assembly; 1.5KE30ARL4G preferred for automated SMT line feed |
Compared with SMBJ30A, 1.5KE30ARL4G delivers 2.5× higher surge power and UL 497B approval for isolated loops, while 1.5KE30A offers identical protection in non-tape form - making 1.5KE30ARL4G optimal for high-reliability, high-energy, and regulatory-compliant industrial deployments.
Availability
1.5KE30ARL4G is available at Aetrix Electronics and suitable for industrial power supplies, medical instrumentation, telecom infrastructure, and process control systems requiring stable component supply and full regulatory traceability.
Supply support for 1.5KE30ARL4G 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, sensor, and discrete devices for automotive, industrial, and cloud power applications.
The 1.5KE30ARL4G belongs to the 1.5KE Series Mosorb TVS family, engineered specifically for high-energy transient suppression in ruggedized power and signal interfaces where reliability under surge stress is mission-critical.
FAQ
What is the clamping voltage of the 1.5KE30ARL4G under maximum surge conditions?
The 1.5KE30ARL4G has a maximum clamping voltage (VC) of 41.4 V at 36 A peak pulse current (IPP) with a 1 ms exponential waveform. This value is measured per Figure 5 in the official ON Semiconductor datasheet and defines the upper voltage limit imposed on protected circuitry during worst-case transient events. Maintaining VC below the absolute maximum ratings of downstream components ensures reliable operation without damage.
Is the 1.5KE30ARL4G certified for use in safety-isolated circuits?
Yes, the 1.5KE30ARL4G carries UL 497B recognition (File #E210057) for protector-class applications in isolated loop circuits. This certification covers validation against strike voltage breakdown, endurance conditioning, dielectric withstand, and discharge tests - confirming its suitability for telecom interfaces, industrial fieldbus networks, and medical isolation barriers where regulatory compliance is mandatory.
Can the 1.5KE30ARL4G be used in bidirectional protection configurations?
No, the 1.5KE30ARL4G is a unidirectional TVS diode and must not be used for bidirectional surge suppression. Its design clamps only in reverse bias; forward conduction begins at ~3.5 V (VF max), which is insufficient for symmetrical AC line protection. For bidirectional applications such as AC mains or differential data lines, a dedicated bidirectional part like 1.5KE30CA or SMAJ30A is required.
What is the maximum steady-state power dissipation for the 1.5KE30ARL4G?
The 1.5KE30ARL4G has a steady-state power dissipation (PD) of 5.0 W at lead temperature (TL) ≤ 75 °C with 3/8″ lead length. Above 75 °C, it derates linearly at 20 mW/°C. This rating applies only to continuous DC or low-frequency reverse leakage conditions - not transient events - and must be verified against actual board layout and ambient thermal conditions.
Does the 1.5KE30ARL4G meet RoHS and REACH requirements?
Yes, the "G" suffix in 1.5KE30ARL4G explicitly denotes a Pb-free (RoHS-compliant) Surmetic axial package. ON Semiconductor confirms full compliance with EU RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. Material declarations and test reports are available through ON Semiconductor's product environmental compliance portal.
1.5KE30ARL4G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- -
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- 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:
- -
1.5KE30ARL4G FAQ
1.How can I place an order for 1.5KE30ARL4G through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE30ARL4G 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 1.5KE30ARL4G reliable?
The price and inventory of 1.5KE30ARL4G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE30ARL4G is usually 5 days.
3.What payment methods are accepted for 1.5KE30ARL4G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE30ARL4G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE30ARL4G?
1.5KE30ARL4G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE30ARL4G 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 1.5KE30ARL4G?
For technical support, including 1.5KE30ARL4G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE30ARL4G requirements.
6.How does Aetrix verify that 1.5KE30ARL4G is sourced from the original manufacturer or authorized distributors?
All 1.5KE30ARL4G 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 1.5KE30ARL4G meets industry standards.
7.What is the process for return or replacement of 1.5KE30ARL4G?
All 1.5KE30ARL4G units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE30ARL4G, 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 1.5KE30ARL4G part is unused and in its original packaging.
Return procedure for 1.5KE30ARL4G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE30ARL4G 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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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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