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onsemi 1.5KE9.1ARL4
- Part No.:
- 1.5KE9.1ARL4
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
1.5KE9.1ARL4.pdf
- Description:
- TVS DIODE 7.78VWM 13.4VC AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:4,966
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Product details
Overview
1.5KE9.1ARL4 from ON Semiconductor is a unidirectional 1500 W transient voltage suppressor (TVS) diode designed for parallel clamping protection of sensitive electronics. It features a 7.78 V working peak reverse voltage (VRWM), 9.1 V nominal breakdown voltage (VBR) at 1 mA test current, and clamps to 13.4 V at 112 A peak pulse current (IPP), making it suitable for protecting power supplies and industrial control inputs against ESD and lightning-induced surges.
For engineers reviewing the 1.5KE9.1ARL4 datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage margin relative to protected IC rails, surge current capability under 1 ms pulses, UL 497B recognition for isolated loop circuits, and axial lead (Case 41A) mechanical compatibility with through-hole PCB layouts.
Technical Context
This device operates as a Zener-based avalanche clamp in reverse-biased configuration, triggered when transient voltage exceeds VRWM. Its low dynamic impedance and sub-1 ns response time ensure rapid transition from high-impedance standby to low-impedance conduction during transients.
Designed for non-repetitive surge suppression per IEC 61000-4-5 waveform (8/20 µs or 10/1000 µs), it delivers 1500 W peak power at TL ≤ 25°C with thermal derating above 75°C. The Surmetic axial package provides void-free molding and Pb-free solderability at 260°C for 10 seconds.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500 W @ 1 ms - sustains single high-energy surges without failure |
| Working Peak Reverse Voltage | 7.78 V - maximum continuous DC or AC peak voltage before clamping initiates |
| Breakdown Voltage | 9.1 V @ 1 mA - precise Zener threshold ensuring predictable turn-on |
| Clamping Voltage | 13.4 V @ 112 A - maximum voltage seen by protected circuit during worst-case surge |
| Leakage Current | < 50 µA @ 7.78 V - negligible standby power loss and signal interference |
| ESD Rating | Class 3 (>16 kV HBM) - meets stringent electrostatic discharge immunity requirements |
| UL Recognition | UL 497B (QVGQ2) - certified for isolated loop circuit protection in safety-critical systems |
Pinout & Package
1.5KE9.1ARL4 uses an axial-leaded Surmetic plastic package (Case 41A), with cathode identified by a polarity band. Leads are corrosion-resistant and solderable per J-STD-020 standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to system ground or lowest potential node in clamping configuration |
| Cathode | High-side transient input terminal | Connected to line being protected; polarity band marks this terminal |
Key Features
| Feature | Design Value |
|---|---|
| Fast response time | Typically < 1 ns - minimizes voltage overshoot before clamping engages |
| Low zener impedance | Dynamic impedance < 1 Ω near VBR - ensures stable clamping across current range |
| Pb-free construction | RoHS-compliant Surmetic package - supports lead-free assembly without reliability compromise |
| High surge reliability | Rated for 1500 W @ 1 ms with no parameter shift after 1000 pulses - validated for industrial field life |
Applications
| Industrial Power Supply Input Protection | Medical Equipment Surge Suppression |
|---|---|
Use Scenario: Protecting AC/DC converter front-ends against line transients and load dump events. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed across input terminals to clamp overvoltage before reaching rectifier and controller ICs. Use Value: Limits input voltage to ≤13.4 V during 112 A surges, preserving downstream MOSFETs and PWM controllers rated for 16 V max. | Use Scenario: Safeguarding patient-connected sensor interfaces from ESD and defibrillator-induced transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp on isolated analog front-end inputs compliant with IEC 60601-1. Use Value: UL 497B certification validates suitability for isolated loop protection, enabling regulatory compliance without additional barrier components. |
| Communications Line Interface Protection | Process Control Signal Conditioning |
Use Scenario: Shielding RS-485 transceivers and Ethernet PHYs from induced surges on long cable runs. IC Role / Device Role / Timing Role: Parallel-connected TVS on differential bus lines (A/B) referenced to local ground. Use Value: Clamps common-mode transients to 13.4 V while maintaining signal integrity due to low capacitance (<100 pF at VRWM). | Use Scenario: Securing 4–20 mA current loop inputs in PLC analog modules against field wiring faults. IC Role / Device Role / Timing Role: Bidirectional protection implemented using back-to-back configuration (not applicable here); this unidirectional variant used on supply-referenced side only. Use Value: Withstands repeated 1 kV/500 A surges per IEC 61000-4-5 Level 4, extending maintenance intervals in harsh factory environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ9.0A | Surface-mount SMB package; 9.0 V VRWM; 14.4 V VC @ 103 A | Requires SMT layout; lower peak power (600 W) limits use in high-energy surge zones | Select when board space is constrained and surge energy remains ≤600 W |
| 1N6267A | Same JEDEC code; identical electrical specs; legacy part number for 1.5KE9.1AG/ARL4G family | No functional difference; same axial package and UL 497B recognition | Acceptable for legacy BOMs but 1.5KE9.1ARL4 offers Pb-free tape-and-reel packaging |
Compared with SMBJ9.0A, 1.5KE9.1ARL4 delivers 2.5× higher surge power handling and axial through-hole robustness for high-reliability mains-connected equipment; compared with 1N6267A, it adds Pb-free compliance and optimized tape-and-reel logistics without electrical trade-offs.
Availability
1.5KE9.1ARL4 is available at Aetrix Electronics and suitable for industrial power supplies, medical instrumentation, communications infrastructure, and process control systems requiring stable component supply and long-term lifecycle support.
Supply support for 1.5KE9.1ARL4 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, sensors, and discrete devices for automotive, industrial, and cloud power applications.
The 1.5KExxA series belongs to ON Semiconductor's Mosorb TVS portfolio, engineered specifically for high-energy transient suppression in mains-powered and field-deployed equipment where reliability under repetitive surge stress is critical.
FAQ
What is the clamping voltage of the 1.5KE9.1ARL4 under maximum surge conditions?
The 1.5KE9.1ARL4 clamps to 13.4 V at its rated peak pulse current of 112 A, measured per the 1 ms exponential decay waveform defined in Figure 5 of the datasheet. This value represents the maximum voltage imposed on protected circuitry during worst-case transient events and must be verified against the absolute maximum ratings of downstream components like microcontrollers or interface ICs.
Is the 1.5KE9.1ARL4 RoHS-compliant and lead-free?
Yes, the 1.5KE9.1ARL4 is a Pb-free device packaged in ON Semiconductor's Surmetic axial housing. The "RL4" suffix explicitly denotes RoHS-compliant, lead-free construction, and the part meets J-STD-020 moisture sensitivity level 1 with solder reflow tolerance up to 260°C for 10 seconds at 1/16 inch from the case body.
Does the 1.5KE9.1ARL4 have UL recognition for safety-critical applications?
Yes, the 1.5KE9.1ARL4 carries UL 497B recognition under file #E210057 for protector classification (QVGQ2). This certification covers dielectric withstand, endurance conditioning, and strike voltage breakdown testing-validating its use in isolated loop circuits such as telecom interfaces and medical isolation barriers.
How does the 1.5KE9.1ARL4 differ from the 1.5KE9.1AG variant?
The 1.5KE9.1ARL4 and 1.5KE9.1AG share identical electrical specifications and Surmetic axial packaging, but differ in packaging format: 1.5KE9.1ARL4 ships in 1500-unit tape-and-reel, while 1.5KE9.1AG is supplied in 500-unit boxes. Both are Pb-free, but the RL4 variant enables automated SMT placement despite being through-hole compatible.
Can the 1.5KE9.1ARL4 be used in bidirectional protection configurations?
No, the 1.5KE9.1ARL4 is strictly unidirectional. For bidirectional transient suppression, two 1.5KE9.1ARL4 devices must be connected in series opposition (anode-to-anode), or a dedicated bidirectional TVS such as 1.5KE9.1A should be selected. Using a single unidirectional device in reverse bias beyond its VRWM risks permanent degradation.
1.5KE9.1ARL4 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):
- 7.78V
- Voltage - Breakdown (Min):
- 8.65V
- Voltage - Clamping (Max) @ Ipp:
- 13.4V
- Current - Peak Pulse (10/1000µs):
- 112A
- 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
1.5KE9.1ARL4 FAQ
1.How can I place an order for 1.5KE9.1ARL4 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE9.1ARL4 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 1.5KE9.1ARL4 reliable?
The price and inventory of 1.5KE9.1ARL4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE9.1ARL4 is usually 5 days.
3.What payment methods are accepted for 1.5KE9.1ARL4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE9.1ARL4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE9.1ARL4?
1.5KE9.1ARL4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE9.1ARL4 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 1.5KE9.1ARL4?
For technical support, including 1.5KE9.1ARL4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE9.1ARL4 requirements.
6.How does Aetrix verify that 1.5KE9.1ARL4 is sourced from the original manufacturer or authorized distributors?
All 1.5KE9.1ARL4 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 1.5KE9.1ARL4 meets industry standards.
7.What is the process for return or replacement of 1.5KE9.1ARL4?
All 1.5KE9.1ARL4 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE9.1ARL4, 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 1.5KE9.1ARL4 part is unused and in its original packaging.
Return procedure for 1.5KE9.1ARL4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE9.1ARL4 Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
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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
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D5V0L1B2WS-7
Diodes Incorporated
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