My Inquiry
My Account
onsemi 1.5KE180ARL4G
- Part No.:
- 1.5KE180ARL4G
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- -
- Datasheet:
-
1.5KE180ARL4G.pdf
- Description:
- TRANS VOLTAGE SUPPRESSOR DIODE
- Quantity:
- Payment:
- Shipping:
Inventory:1,500
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1.5KE180ARL4G 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 154 V working peak reverse voltage (VRWM), 180 V breakdown voltage (VBR) at 1 mA, 246 V maximum clamping voltage (VC) at 6.1 A peak pulse current (IPP), and sub-1 ns response time. It is used in industrial power supplies and telecom interface circuits to safeguard CMOS/MOS ICs.
For engineers reviewing the 1.5KE180ARL4G datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage margin relative to system operating voltage, peak pulse current handling under IEC 61000-4-5 surge conditions, UL 497B certification for isolated loop protection, and Pb-free axial lead compatibility with wave soldering at 230°C.
Technical Context
The 1.5KE180ARL4G operates as a Zener-based avalanche clamp, triggered when reverse voltage exceeds its 180 V nominal breakdown threshold. Its low dynamic impedance ensures stable clamping during 1 ms 1500 W transients, while its <1 ns intrinsic response time minimizes voltage overshoot before clamping engages.
Designed for unidirectional operation, it conducts only in reverse bias above VRWM and blocks up to 154 V DC or continuous peak AC. Its Surmetic axial package (Case 41A) provides mechanical robustness and thermal resistance (RJL = 20 °C/W), enabling reliable heat dissipation during repetitive surge events within derated ambient conditions.
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 | 154 V - maximum continuous reverse voltage before leakage exceeds 5 µA; sets minimum system operating margin |
| Breakdown Voltage | 180 V (nominal) @ 1 mA - precise Zener avalanche onset point; defines clamping trigger threshold |
| Clamping Voltage | 246 V @ 6.1 A IPP - maximum voltage seen by protected circuit during full-rated surge event |
| Response Time | <1 ns - enables suppression before transient energy couples into downstream ICs |
| ESD Rating | Class 3 (>16 kV HBM) - meets IEC 61000-4-2 for system-level ESD immunity |
| UL Recognition | UL 497B (QVGV2) - certified for isolated loop circuit protection in telecom and industrial interfaces |
Pinout & Package
Package: Axial leaded Surmetic plastic case (Case 41A), Pb-free, cathode indicated by band. Dimensions: A = 8.5–9.5 mm length, B = 4.8–5.3 mm diameter, D = 0.96–1.06 mm lead diameter, K = 25.4 mm lead length.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / low-side reference | Connected to circuit ground or lowest potential node; establishes reference for reverse-biased clamping |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., DC input, signal trace); conducts avalanche current when voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse rating | Enables protection against severe lightning-induced surges (IEC 61000-4-5 2 Ω/12 Ω coupling) |
| UL 497B recognition | Validates suitability for safety-critical isolated loop protection in telecom and process control systems |
| Pb-free Surmetic axial package | Complies with RoHS; supports automated tape-and-reel placement (1500/reel) and 230°C wave soldering |
| Low zener impedance & fast response | Minimizes clamping voltage overshoot and ensures consistent protection across temperature and aging |
| 175°C max junction temperature | Supports operation in high-ambient environments such as enclosed industrial power supplies |
Applications
| Industrial Power Supply Input Protection | Telecom Line Interface Protection |
|---|---|
Use Scenario: Protecting 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 clamping device placed across input terminals to shunt surge energy to ground before it reaches bridge rectifier or controller IC. Use Value: Limits transient voltage to ≤246 V, preventing overvoltage stress on 400 V-rated electrolytic capacitors and 650 V MOSFETs in offline SMPS designs. | Use Scenario: Safeguarding RS-485 transceivers and isolation barriers in building automation controllers connected to long outdoor wiring runs. IC Role / Device Role / Timing Role: Primary surge suppression element on differential bus lines, coordinated with secondary GDT or polymer PTC for multi-stage protection. Use Value: Clamps common-mode surges to ≤246 V within <1 ns, preserving signal integrity and preventing latch-up in ±10 V tolerant transceivers like SN65HVD7x. |
| Medical Equipment ESD Shielding | Process Control Sensor Signal Conditioning |
Use Scenario: Guarding USB, Ethernet, and analog sensor ports on diagnostic imaging devices against operator ESD events per IEC 61000-4-2. IC Role / Device Role / Timing Role: First-line ESD clamp on external I/O connectors, upstream of TVS arrays and filtering networks. Use Value: Absorbs >16 kV HBM discharges with <5 µA leakage at 154 V, ensuring no interference with low-noise 24-bit ADC references. | Use Scenario: Protecting 4–20 mA current loop receivers and thermocouple amplifiers in PLC analog input modules exposed to motor drive noise. IC Role / Device Role / Timing Role: High-power transient limiter on loop supply rail, complementing low-capacitance TVS for fast edge transients. Use Value: Handles repetitive 1500 W surges without degradation, maintaining ±0.1% gain accuracy in precision instrumentation op-amps. |
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; 1500 W rating; 154 V VRWM; 246 V VC @ 6.1 A - identical electrical specs but different form factor | Requires PCB redesign for SMT layout; unsuitable for through-hole or chassis-mounted legacy designs | Select when board space is constrained and automated SMT assembly is available |
| 1.5KE180A | Same axial package and electrical specs; differs only in packaging - bulk box (500 units) vs. tape-and-reel (1500 units); both Pb-free | No functional or performance difference; purely logistics-driven choice for procurement or assembly line feed | Select 1.5KE180A for manual prototyping or low-volume hand-soldering; 1.5KE180ARL4G for high-volume automated placement |
Compared with SMBJ180A and 1.5KE180A, the 1.5KE180ARL4G uniquely combines axial-leaded mechanical robustness, UL 497B certification for isolated loops, and tape-and-reel compatibility - making it optimal for industrial power supply and telecom interface designs requiring field-replaceable, high-reliability through-hole TVS protection.
Availability
1.5KE180ARL4G is available at Aetrix Electronics and suitable for industrial power supplies, telecom line interfaces, medical equipment ESD shielding, and process control sensor conditioning requiring stable component supply and long-term lifecycle support.
Supply support for 1.5KE180ARL4G 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 manufacturer specializing in power management, analog, sensing, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The 1.5KE180ARL4G belongs to the 1.5KE series of high-power Mosorb TVS diodes, engineered specifically for robust, cost-effective overvoltage protection in harsh industrial and infrastructure environments where reliability under repeated surge stress is critical.
FAQ
What is the clamping voltage of the 1.5KE180ARL4G under maximum rated surge current?
The 1.5KE180ARL4G has a maximum clamping voltage (VC) of 246 V when subjected to its rated peak pulse current (IPP) of 6.1 A, measured with a 1 ms exponential waveform per Figure 5 in the datasheet. This value defines the upper voltage limit imposed on protected circuitry during a full 1500 W transient event and must be verified against the withstand voltage of downstream components such as bridge rectifiers or input capacitors in the 1.5KE180ARL4G application.
Is the 1.5KE180ARL4G compliant with UL 497B, and what does that certification cover?
Yes, the 1.5KE180ARL4G is UL Recognized under standard UL 497B (File #E210057) for protectors (QVGV2 category). This certification validates its performance in isolated loop circuit protection - including passing Strike Voltage Breakdown, Endurance Conditioning, Dielectric Withstand, and Discharge tests - confirming suitability for telecom, process control, and medical isolation barrier applications where safety-critical surge suppression is mandated. The 1.5KE180ARL4G meets this requirement as part of the full 1.5KE6.8A–1.5KE250A series.
Can the 1.5KE180ARL4G be used in bidirectional protection configurations?
No, the 1.5KE180ARL4G is a unidirectional TVS diode and is not rated for bidirectional operation. Its electrical characteristics - including breakdown voltage, clamping behavior, and leakage - are specified only for reverse-bias conduction. For bidirectional protection (e.g., AC lines or differential data buses), a dedicated bidirectional device such as the 1.5KE180CA or an appropriately paired back-to-back configuration would be required. Using the 1.5KE180ARL4G in forward bias beyond its 3.5 V VF rating risks permanent damage and invalidates its 1.5KE180ARL4G surge rating.
What is the maximum allowable lead temperature during soldering of the 1.5KE180ARL4G?
The maximum lead temperature for soldering the 1.5KE180ARL4G is 230°C, applied at a distance of 1/16 inch (≈1.6 mm) from the case for no longer than 10 seconds. This specification ensures bond integrity and avoids internal thermal stress while maintaining the device's rated surge performance. Exceeding this limit may degrade the Zener junction or compromise the Surmetic plastic encapsulation. This parameter is explicitly defined in the Mechanical Characteristics section of the 1.5KE180ARL4G datasheet and applies to both wave and hand-soldering processes.
How does the 1.5KE180ARL4G's temperature coefficient affect its breakdown voltage stability?
The 1.5KE180ARL4G has a maximum temperature coefficient of VBR of 0.108 %/°C, meaning its breakdown voltage increases by up to 0.194 V per °C rise in junction temperature (0.108% × 180 V). This positive drift ensures predictable, monotonic clamping behavior across its –65°C to +175°C operating range and prevents premature triggering at elevated temperatures. Designers must account for this shift when setting VRWM margins in high-ambient applications - for example, at +125°C junction, VBR may reach ~195 V, requiring verification that the 1.5KE180ARL4G still clamps below the protected IC's absolute maximum rating.
1.5KE180ARL4G 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:
- -
1.5KE180ARL4G FAQ
1.How can I place an order for 1.5KE180ARL4G through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE180ARL4G 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 1.5KE180ARL4G reliable?
The price and inventory of 1.5KE180ARL4G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE180ARL4G is usually 5 days.
3.What payment methods are accepted for 1.5KE180ARL4G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE180ARL4G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE180ARL4G?
1.5KE180ARL4G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE180ARL4G 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 1.5KE180ARL4G?
For technical support, including 1.5KE180ARL4G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE180ARL4G requirements.
6.How does Aetrix verify that 1.5KE180ARL4G is sourced from the original manufacturer or authorized distributors?
All 1.5KE180ARL4G 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 1.5KE180ARL4G meets industry standards.
7.What is the process for return or replacement of 1.5KE180ARL4G?
All 1.5KE180ARL4G units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE180ARL4G, 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 1.5KE180ARL4G part is unused and in its original packaging.
Return procedure for 1.5KE180ARL4G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE180ARL4G Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
