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onsemi 1.5KE11A
- Part No.:
- 1.5KE11A
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
1.5KE11A.pdf
- Description:
- TVS DIODE 9.4VWM 15.6VC AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:9,354
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Product details
Overview
1.5KE11A 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 9.4 V working peak reverse voltage (VRWM), 11 V nominal breakdown voltage (VBR) at 1 mA test current, and clamps to ≤15.6 V at 96 A peak pulse current (IPP), making it suitable for DC power rail protection in industrial power supplies and communication interfaces.
For engineers reviewing the 1.5KE11A datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, axial lead package details, UL 497B certification status, clamping performance under 1 ms pulses, and validated alternative TVS diodes for surge-prone 12 V system designs.
Technical Context
The 1.5KE11A operates as a Zener-based avalanche clamp, triggered when reverse voltage exceeds its 11 V breakdown threshold. Its low dynamic impedance (<1 Ω typical above VBR) ensures rapid transition into conduction, limiting transient energy delivered to downstream circuitry. It sustains non-repetitive 1500 W pulses per the standard 10/1000 µs waveform defined in Figure 5 of the datasheet.
Thermal design relies on junction-to-lead resistance of 20 °C/W and a maximum steady-state power dissipation of 5.0 W at TL ≤ 75°C with 3/8″ lead length. Its <1 ns response time and Class 3 HBM ESD rating (>16 kV) support robust protection in environments with fast-rising transients and human-handling exposure.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500 W @ 1 ms - withstands high-energy surges without failure in telecom or industrial power inputs |
| Working Peak Reverse Voltage (VRWM) | 9.4 V - selected to protect 12 V nominal rails while avoiding false triggering during normal operation |
| Breakdown Voltage (VBR) | 10.5–11.6 V @ 1 mA - tight tolerance ensures predictable turn-on across temperature and unit variation |
| Clamping Voltage (VC) | ≤15.6 V @ 96 A IPP - limits downstream voltage stress to safe levels for 15 V-rated ICs and MOSFETs |
| Leakage Current (IR) | ≤5 µA @ 9.4 V - negligible standby power loss and no interference with low-current sensor circuits |
| Response Time | <1 ns - fast enough to suppress ESD events before damage occurs to CMOS inputs |
| ESD Rating | Class 3 (>16 kV) HBM - meets IEC 61000-4-2 Level 4 for system-level ESD immunity |
Pinout & Package
1.5KE11A uses an axial-leaded Surmetic plastic package (Case 41A), with cathode identified 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 connection in clamping configuration | Connected to ground or return path; carries full surge current during transient events |
| Cathode | High-side connection in clamping configuration | Connected to protected line (e.g., +12 V rail); voltage referenced to anode during clamping |
Key Features
| Feature | Design Value |
|---|---|
| UL 497B Recognition | Qualified for isolated loop circuit protection - enables use in certified telecom and industrial safety-critical interfaces |
| Pb-Free Construction | RoHS-compliant Surmetic axial package - supports lead-free assembly and environmental compliance without derating |
| Low Clamping Ratio | VC/VBR ≈ 1.41 - superior voltage limiting vs. competing 1.5 kW TVS devices (typical ratio >1.5) |
| High Surge Robustness | Withstands ≥1000 surges at rated IPP - ensures long-term reliability in repetitive surge environments like motor drives |
| Thermal Stability | 0.075 %/°C VBR tempco - minimal drift over −65°C to +175°C operating range, critical for automotive under-hood use |
Applications
| Industrial Power Supply Protection | RS-485 Interface Protection |
|---|---|
Use Scenario: 12 V DC input stage of programmable logic controller (PLC) power module exposed to load dump and inductive kickback. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between +12 V rail and ground, absorbing transient energy before it reaches DC/DC converters and microcontrollers. Use Value: Limits rail voltage to ≤15.6 V during 96 A surges, preventing latch-up or gate oxide rupture in downstream 16 V-rated power management ICs. |
Use Scenario: Data lines of RS-485 transceiver in factory automation network subject to cable ESD and ground potential differences. IC Role / Device Role / Timing Role: Paired TVS diodes (one per line) referenced to local ground, suppressing common-mode transients before signal integrity degrades. Use Value: Sub-1 ns response prevents data corruption during 8 kV contact discharge; low leakage avoids bias current errors in high-impedance receiver inputs. |
| Medical Equipment Input Stage | Automotive Body Control Module |
Use Scenario: Auxiliary 12 V supply input to diagnostic imaging subsystem requiring IEC 60601-1 compliance. IC Role / Device Role / Timing Role: Primary overvoltage protector on main DC input, coordinated with fuse and upstream filter to meet creepage/clearance and surge immunity requirements. Use Value: UL 497B recognition validates suitability for patient-connected equipment; 175°C max junction temperature supports sealed enclosure thermal profiles. |
Use Scenario: LIN bus or sensor supply line in BCM exposed to battery transients per ISO 7637-2 Pulse 1/2a/5a. IC Role / Device Role / Timing Role: Clamp on 12 V sensor reference rail, shunting surge current away from analog front-end amplifiers and ADC references. Use Value: 9.4 V VRWM aligns with ISO 7637-2's 13.5 V steady-state requirement; clamping at 15.6 V protects 16 V absolute-maximum analog components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ10A | 600 W rating, SMC package, VRWM = 10 V, VC = 17 V @ 32.4 A | Lower power handling; surface-mount only; better for space-constrained PCBs | Select when board area is limited and surge threat level is moderate (e.g., consumer-grade peripherals) |
| 1.5KE11CA | Same 1500 W rating and VRWM, but bidirectional; VBR symmetric ±11 V | Required for AC-coupled or dual-polarity signal lines (e.g., Ethernet PHY pairs) | Choose only if protecting balanced differential signals or AC rails where reverse polarity surges occur |
Compared with SMBJ10A and 1.5KE11CA, the 1.5KE11A offers higher surge capacity in through-hole format and optimized unidirectional clamping for DC power rails-making it preferred for industrial power entry points where mechanical robustness and single-polarity protection are primary requirements.
Availability
1.5KE11A is available at Aetrix Electronics and suitable for industrial power supplies, RS-485 communication systems, and medical equipment requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for 1.5KE11A 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 power management, analog, sensors, and discrete devices for automotive, industrial, and cloud power applications.
The 1.5KE11A belongs to the 1.5KE series of Mosorb transient voltage suppressors, engineered specifically for high-reliability, high-surge industrial and communications infrastructure where UL recognition, axial-leaded mechanical stability, and precise clamping performance are mandatory.
FAQ
What is the maximum clamping voltage of the 1.5KE11A under surge conditions?
The 1.5KE11A clamps to a maximum of 15.6 V when subjected to its rated 96 A peak pulse current (IPP), measured using the standardized 10/1000 µs waveform. This value is guaranteed across the full operating temperature range and ensures downstream components rated for 16 V absolute maximum will remain within safe operating limits during transient events. The 1.5KE11A datasheet specifies this as VC @ IPP in Table 3.
Is the 1.5KE11A RoHS compliant and lead-free?
Yes, the 1.5KE11A is manufactured in a Pb-free Surmetic axial package (Case 41A), as confirmed by the "G" suffix in ordering codes like 1.5KE11AG and explicit labeling in the "Mechanical Characteristics" section. ON Semiconductor's Pb-Free Packaging Specification confirms full RoHS compliance, including exemption reporting per EU Directive 2011/65/EU Annex III, and compatibility with lead-free reflow and wave soldering processes up to 260°C.
Does the 1.5KE11A have UL recognition, and for what standard?
Yes, the 1.5KE11A carries UL 497B recognition under File #E210057 for "Protectors" (QVGQ2 category), explicitly covering isolated loop circuit protection. This certification applies to the full 1.5KE6.8A–1.5KE250A series and validates performance in surge endurance, dielectric withstand, and strike voltage breakdown tests-critical for telecom central office and industrial control system approvals.
How does the 1.5KE11A differ from the 1.5KE11CA variant?
The 1.5KE11A is unidirectional, while the 1.5KE11CA is bidirectional-meaning the latter clamps equally for both positive and negative transients (±11 V breakdown). The 1.5KE11A is intended for DC rail protection (e.g., +12 V to ground), whereas the 1.5KE11CA suits AC-coupled or differential signal lines like CAN or Ethernet. Their pinouts and packages are identical, but functional behavior differs fundamentally due to internal structure.
What is the thermal resistance and maximum junction temperature of the 1.5KE11A?
The 1.5KE11A has a junction-to-lead thermal resistance (RJL) of 20 °C/W and an operating junction temperature range of −65°C to +175°C. At steady state, it dissipates up to 5.0 W with 3/8″ lead length at TL ≤ 75°C, derating linearly above that temperature. These values are specified in the "Maximum Ratings" table and enable reliable operation in sealed enclosures or under-hood automotive environments where ambient temperatures exceed 100°C.
1.5KE11A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- DO-201AD, Axial
- Series:
- Mosorb™
- Packaging:
- Bulk
- 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
1.5KE11A FAQ
1.How can I place an order for 1.5KE11A through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE11A 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 1.5KE11A reliable?
The price and inventory of 1.5KE11A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE11A is usually 5 days.
3.What payment methods are accepted for 1.5KE11A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE11A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE11A?
1.5KE11A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE11A 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 1.5KE11A?
For technical support, including 1.5KE11A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE11A requirements.
6.How does Aetrix verify that 1.5KE11A is sourced from the original manufacturer or authorized distributors?
All 1.5KE11A 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 1.5KE11A meets industry standards.
7.What is the process for return or replacement of 1.5KE11A?
All 1.5KE11A units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE11A, 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 1.5KE11A part is unused and in its original packaging.
Return procedure for 1.5KE11A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE11A Tags
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onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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