My Inquiry
My Account
onsemi 1.5KE11ARL4
- Part No.:
- 1.5KE11ARL4
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
1.5KE11ARL4.pdf
- Description:
- TVS DIODE 9.4VWM 15.6VC AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:4,039
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1.5KE11ARL4 from ON Semiconductor is a unidirectional 1500 W transient voltage suppressor (TVS) diode designed for parallel clamping protection of sensitive electronics. It features a 9.4 V working peak reverse voltage (VRWM), 11 V nominal breakdown voltage (VBR), 15.6 V maximum clamping voltage (VC) at 96 A peak pulse current (IPP), and sub-1 ns response time. It is used in power supplies, communication interfaces, and industrial control systems to protect CMOS/MOS/Bipolar ICs from ESD and surge transients.
For engineers reviewing the 1.5KE11ARL4 datasheet, pinout, applications, or equivalent options, key selection criteria include VRWM margin over operating voltage, VC vs. protected device's absolute maximum rating, surge current capability under IEC 61000-4-5 waveforms, and UL 497B recognition for isolated loop protection.
Technical Context
This TVS operates as a voltage-clamped shunt protector: under normal bias it presents <5 µA leakage above VRWM; during transients exceeding VBR, it avalanches into low-impedance conduction to clamp voltage at VC. Its Surmetic axial-leaded plastic package (Case 41A) enables high thermal dissipation with 20 °C/W junction-to-lead resistance.
The device meets Class 3 ESD immunity (>16 kV HBM) and is UL 497B recognized for isolated loop circuit protection - a requirement for telecom and industrial interface designs. Its 1 ms 1500 W peak power rating follows the non-repetitive 8.3 ms half-sine waveform per Figure 5, with derating applied for ambient temperature and duty cycle per Figures 2 and 7.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 9.4 V - Maximum continuous reverse operating voltage before clamping begins; must exceed system DC/peak AC voltage by ≥10%. |
| VBR @ IT=1 A | 10.5–11.6 V - Breakdown occurs within this band at 1 mA test current; defines turn-on threshold tolerance. |
| VC @ IPP=96 A | 15.6 V - Maximum clamped voltage seen by protected circuit during full-rated 1500 W transient. |
| IPP | 96 A - Peak pulse current supported at 1 ms duration; correlates to IEC 61000-4-5 Level 4 surge (4 kV/2 Ω). |
| Response Time | <1 ns - Enables suppression before fast-edge transients (e.g., ESD, relay bounce) damage downstream ICs. |
| Leakage @ VRWM | <5 µA - Negligible loading on signal/power lines during normal operation; avoids false triggering or power loss. |
| UL Recognition | UL 497B QVGQ2 - Certified for use in isolated loop protectors; validates dielectric strength, endurance, and flammability compliance. |
Pinout & Package
1.5KE11ARL4 uses an axial-leaded Surmetic plastic package (Case 41A), with cathode identified by a polarity band. Leads are tin-plated, 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 connection point | Connected to ground or low-impedance return path; carries full surge current during clamping. |
| Cathode | High-side connection point | Marked with band; connected to protected line (e.g., VCC, signal); voltage referenced to anode during clamping. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Supports robust protection against IEC 61000-4-5 surges up to 4 kV without degradation across 1000+ events. |
| ESD rating >16 kV HBM | Meets IEC 61000-4-2 Level 4 for system-level ESD immunity without external series impedance. |
| Clamping ratio VC/VBR = 1.41 | Ensures tight voltage margin between clamping level and protected IC's absolute maximum rating (e.g., 16 V rail). |
| Pb-free axial lead package | Complies with RoHS Directive 2011/65/EU; compatible with standard wave and reflow soldering processes. |
| Low zener impedance | Maintains stable clamping under fast-rising transients (di/dt >100 A/ns), minimizing overshoot in PCB layouts. |
Applications
| Industrial Power Supply Protection | RS-485 Interface Protection |
|---|---|
Use Scenario: 24 V DC input stage of PLC power module exposed to load dump and inductive switching transients. IC Role / Device Role / Timing Role: Shunt TVS placed between VIN and GND to clamp surges before they reach primary-side controller and bulk capacitor. Use Value: Limits transient voltage to ≤15.6 V, preventing overvoltage failure of 30 V-rated MOSFETs and input capacitors rated at 35 V. | Use Scenario: Termination point of long-haul RS-485 bus in factory automation network subject to lightning-induced surges. IC Role / Device Role / Timing Role: Unidirectional TVS on A/B differential lines referenced to local ground, suppressing common-mode transients. Use Value: Clamps ±15.6 V spikes while maintaining <5 µA leakage, preserving signal integrity and receiver common-mode range (−7 V to +12 V). |
| Medical Equipment Input Stage | AC-DC Adapter Secondary-Side Clamp |
Use Scenario: Low-voltage DC input (12 V) to patient monitor front-end board, requiring UL 497B compliance for isolated loop safety. IC Role / Device Role / Timing Role: UL-recognized TVS on isolated DC feed line to protect analog front-end and microcontroller I/O. Use Value: Validated per UL 497B for isolation barrier protection - satisfies regulatory testing for dielectric withstand and endurance under repeated surges. | Use Scenario: Output rectifier node of 12 V/3 A wall adapter where secondary-side surge coupling occurs via transformer parasitics. IC Role / Device Role / Timing Role: Fast-response TVS across output capacitor to absorb reflected primary-side transients before reaching load. Use Value: Sub-1 ns response prevents voltage overshoot beyond 15.6 V, protecting 16 V-rated USB-PD controllers and load switches. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ10A | 600 W rating, 10 V VRWM, SMC package (surface-mount), lower IPP (32.4 A) | Designed for PCB space-constrained designs; not axial-leaded or UL 497B recognized | Select when board area is limited and UL certification is not required; verify clamping voltage (17 V) remains within protected IC limits. |
| 1.5KE11A | Identical electrical specs and package; differs only in packaging format (500-unit box vs. 1500-unit tape-and-reel) | No functional difference; same thermal, electrical, and mechanical performance | Choose 1.5KE11A for manual prototyping or low-volume assembly; 1.5KE11ARL4 preferred for automated SMT line feeding. |
Compared with SMBJ10A, 1.5KE11ARL4 delivers 2.5× higher surge power and UL 497B certification but requires axial through-hole mounting; versus 1.5KE11A, it offers identical protection performance with optimized reel packaging for high-volume production.
Availability
1.5KE11ARL4 is available at Aetrix Electronics and suitable for industrial power supplies, RS-485 communication systems, and medical equipment requiring stable component supply with UL-compliant surge protection.
Supply support for 1.5KE11ARL4 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 supplier specializing in energy-efficient power, analog, sensor, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The 1.5KExxA Series belongs to ON Semiconductor's Mosorb TVS family, engineered for high-energy transient suppression in harsh environments - emphasizing reliability, UL recognition, and consistent clamping performance across temperature and lifetime.
FAQ
What is the maximum clamping voltage of the 1.5KE11ARL4 under full-rated surge conditions?
The 1.5KE11ARL4 has a maximum clamping voltage (VC) of 15.6 V when subjected to its rated 96 A peak pulse current (IPP) with a 1 ms waveform. This value is measured per Figure 5 in the official ON Semiconductor datasheet and represents the highest voltage the protected circuit will experience during a full 1500 W transient event. Designers must ensure this clamping level stays below the absolute maximum voltage rating of downstream components.
Is the 1.5KE11ARL4 UL 497B certified, and what does that mean for my design?
Yes, the 1.5KE11ARL4 is UL 497B recognized under file QVGQ2 for isolated loop circuit protection. This certification confirms successful completion of rigorous tests including strike voltage breakdown, endurance conditioning, dielectric withstand, and discharge validation. For your design, it means the 1.5KE11ARL4 can be used in safety-critical telecom and industrial isolation barriers without requiring additional system-level certification effort.
Can the 1.5KE11ARL4 replace the 1.5KE10A in an existing design?
The 1.5KE11ARL4 is not a direct replacement for the 1.5KE10A due to differences in key parameters: VRWM increases from 8.55 V to 9.4 V, VBR from 9.5–10.5 V to 10.5–11.6 V, and VC from 14.5 V to 15.6 V. While both are 1500 W TVS diodes, substituting 1.5KE11ARL4 may raise clamping voltage beyond the safe margin of circuits designed for 1.5KE10A - verify compatibility with protected IC voltage ratings before replacement.
What is the leakage current specification for the 1.5KE11ARL4 at its working voltage?
The 1.5KE11ARL4 specifies a maximum reverse leakage current (IR) of 5 µA at its working peak reverse voltage (VRWM) of 9.4 V, measured at 25°C. This ultra-low leakage ensures minimal power loss and signal interference in always-on or battery-powered applications. Leakage remains well below 10 µA across the full −65°C to +175°C operating temperature range, supporting reliable performance in industrial environments.
Does the 1.5KE11ARL4 meet RoHS and REACH requirements?
Yes, the 1.5KE11ARL4 is Pb-free and complies with the EU RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. The "G" suffix in its ordering code denotes the Pb-free Surmetic axial package, and lead finish is 100% matte tin. Full material declarations and compliance documentation are available through onsemi's product environmental page and Aetrix Electronics' traceable sourcing records.
1.5KE11ARL4 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):
- 9.4V
- Voltage - Breakdown (Min):
- 10.5V
- Voltage - Clamping (Max) @ Ipp:
- 15.6V
- Current - Peak Pulse (10/1000µs):
- 96A
- 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
1.5KE11ARL4 FAQ
1.How can I place an order for 1.5KE11ARL4 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE11ARL4 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 1.5KE11ARL4 reliable?
The price and inventory of 1.5KE11ARL4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE11ARL4 is usually 5 days.
3.What payment methods are accepted for 1.5KE11ARL4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE11ARL4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE11ARL4?
1.5KE11ARL4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE11ARL4 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 1.5KE11ARL4?
For technical support, including 1.5KE11ARL4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE11ARL4 requirements.
6.How does Aetrix verify that 1.5KE11ARL4 is sourced from the original manufacturer or authorized distributors?
All 1.5KE11ARL4 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 1.5KE11ARL4 meets industry standards.
7.What is the process for return or replacement of 1.5KE11ARL4?
All 1.5KE11ARL4 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE11ARL4, 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 1.5KE11ARL4 part is unused and in its original packaging.
Return procedure for 1.5KE11ARL4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE11ARL4 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…
