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onsemi 1.5KE15CA
- Part No.:
- 1.5KE15CA
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE15CA.pdf
- Description:
- TRANS VOLTAGE SUPPRESSOR DIODE,
- Quantity:
- Payment:
- Shipping:
Inventory:28,150
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Product details
Overview
1.5KE15CA from ON Semiconductor is a bidirectional transient voltage suppressor (TVS) diode designed for parallel clamping protection of sensitive electronics against ESD, lightning surges, and inductive switching transients. It features a 12.8 V working peak reverse voltage (VRWM), 15 V nominal breakdown voltage (VBR), 21.2 V clamping voltage (VC) at 71 A peak pulse current (IPP), and 1500 W peak pulse power rating at 1 ms. It is widely deployed in AC/DC power supplies, industrial control I/O modules, and telecom line interfaces.
For engineers reviewing the 1.5KE15CA datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage margin relative to protected IC VDD, surge current capability under 10/1000 μs waveform, UL 497B recognition for isolated loop protection, and axial leaded Case 41A package compatibility with through-hole PCB layouts.
Technical Context
The 1.5KE15CA operates as a bidirectional Zener-based TVS, leveraging avalanche breakdown in both polarities to clamp transient overvoltages symmetrically. Its low dynamic impedance ensures stable clamping across its rated IPP range, while sub-1 ns response time enables effective suppression of fast-rising ESD events per IEC 61000-4-2.
Thermal design relies on junction-to-lead thermal resistance (RJL = 20 °C/W) and derating curves for ambient temperatures above 25°C. The device is rated for continuous operation from −65°C to +175°C and supports non-repetitive 1500 W pulses per Figure 4 waveform (10/1000 μs).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 12.8 V - Maximum continuous reverse operating voltage before clamping begins; must exceed circuit's peak DC or AC voltage. |
| VBR (min/typ/max) | 14.3 / 15.0 / 15.8 V @ 1 mA - Confirmed avalanche onset range; defines minimum voltage at which full clamping engages. |
| VC @ IPP | 21.2 V @ 71 A - Clamped voltage during 10/1000 μs surge; determines maximum stress on downstream components. |
| Peak Pulse Power | 1500 W @ 1 ms - Energy-handling capacity for single-event transients; validated per Figure 4 waveform. |
| Leakage Current | <5 μA @ VRWM - Negligible standby power loss and signal integrity impact in high-impedance circuits. |
| ESD Rating | Class 3 (>16 kV HBM) - Meets stringent electrostatic discharge immunity requirements for end-equipment certification. |
| UL Recognition | UL 497B (QVGV2) - Certified for use in isolated loop circuit protection, including telecom and industrial fieldbus interfaces. |
Pinout & Package
Package: Axial-leaded plastic case (ON Semiconductor Case 41A), void-free thermosetting epoxy, corrosion-resistant leads, RoHS-compliant. Mounting position is unrestricted; max solder temperature is 230°C at 1/16″ from case for 10 seconds.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during negative transients | Connects to lower-potential node (e.g., GND or return path) when suppressing negative-going surges. |
| Cathode | Current entry point during positive transients | Connects to higher-potential node (e.g., VIN, signal line) when suppressing positive-going surges; cathode band is non-polar marking only. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Provides symmetrical overvoltage protection without polarity constraints-ideal for AC lines and differential signals. |
| 1500 W surge rating | Handles high-energy transients such as lightning-induced surges on telecom or power supply inputs without degradation. |
| UL 497B recognition | Validated for safety-critical isolated loop applications, reducing compliance risk in medical and industrial equipment. |
| <1 ns response time | Minimizes voltage overshoot before clamping engages, critical for protecting fast CMOS/MOS logic and data interfaces. |
| Low zener impedance | Ensures predictable, repeatable clamping performance across temperature and aging-no parameter drift under repeated surges. |
Applications
| AC/DC Power Supply Input Protection | Industrial PLC Digital I/O Protection |
|---|---|
Use Scenario: Installed across AC mains input or DC bus rails to absorb line-to-line and line-to-ground surges from lightning or grid switching. IC Role / Device Role: Primary clamping element placed upstream of bridge rectifier or bulk capacitor to limit transient voltage to safe levels. Use Value: Prevents catastrophic failure of rectifiers, capacitors, and primary-side controllers by limiting peak voltage to ≤21.2 V during 71 A surges. |
Use Scenario: Mounted at terminal blocks or connector entries of programmable logic controller (PLC) digital input cards handling 24 V DC field signals. IC Role / Device Role: Bidirectional shunt protector that clamps both positive and negative transients induced by relay coil flyback or cable coupling. Use Value: Enables reliable operation in factory environments with frequent inductive load switching, meeting IEC 61000-4-4 Level 4 immunity. |
| Telecom Line Interface Protection | Medical Equipment Signal Line Protection |
Use Scenario: Applied across tip/ring pairs of analog telephone line interfaces or RS-485 data lines in PBX or VoIP gateways. IC Role / Device Role: UL 497B–recognized protector for isolated communication loops, ensuring safety compliance and surge robustness. Use Value: Passes UL dielectric withstand and endurance conditioning tests, enabling certification for Class 2 limited-power circuits. |
Use Scenario: Used on sensor input lines (e.g., ECG, pulse oximeter) and patient-connected auxiliary ports in diagnostic devices. IC Role / Device Role: Low-leakage (<5 μA) bidirectional clamp that avoids signal distortion while meeting IEC 60601-1 creepage/clearance and surge requirements. Use Value: Maintains microamp-level signal integrity and meets 15 kV ESD immunity (IEC 61000-4-2) without compromising patient safety isolation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15CA | Lower peak power (600 W), SMC surface-mount package, same VRWM/VBR/VC ratings. | Designed for space-constrained PCBs; lacks UL 497B recognition and axial lead mechanical robustness. | Select SMBJ15CA only when board area is constrained and surge energy remains below 600 W; verify layout for thermal relief and creepage. |
| 1.5SMC15CA | Same 1500 W rating and electrical specs, but in SMC package; no UL 497B listing. | Used in high-volume consumer power adapters where safety certification is handled at system level, not component level. | Choose 1.5SMC15CA for cost-sensitive, non-certified applications requiring identical clamping performance in surface-mount format. |
Compared with 1.5KE15CA, SMBJ15CA offers smaller footprint but reduced surge margin and no UL 497B validation, while 1.5SMC15CA matches power rating but omits critical safety certification-making 1.5KE15CA the preferred choice for certified industrial and medical designs requiring axial reliability and regulatory traceability.
Availability
1.5KE15CA is available at Aetrix Electronics and suitable for AC/DC power supplies, industrial PLC I/O modules, and telecom line interface circuits requiring stable component supply, long-term lifecycle support, and UL-recognized surge protection.
Supply support for 1.5KE15CA 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 management, analog, sensing, and connectivity solutions for automotive, industrial, cloud, and medical markets.
The 1.5KE15CA belongs to the Mosorb™ 1500 W axial TVS family, engineered specifically for high-reliability, high-surge industrial and infrastructure applications where UL 497B compliance and proven field robustness are mandatory.
FAQ
What is the clamping voltage of the 1.5KE15CA under maximum surge conditions?
The 1.5KE15CA exhibits a maximum clamping voltage (VC) of 21.2 V when subjected to its rated peak pulse current of 71 A under the standard 10/1000 μs waveform. This value is measured per Figure 4 in the official ON Semiconductor datasheet and defines the upper voltage limit imposed on protected circuitry during worst-case transient events. Designers must ensure downstream components tolerate this clamped voltage with appropriate margin.
Is the 1.5KE15CA suitable for bidirectional signal line protection?
Yes, the 1.5KE15CA is explicitly designed as a bidirectional TVS diode, tested and specified for clamping in both polarities. Its "CA" suffix denotes clipper-bidirectional functionality, making it appropriate for protecting AC-coupled data lines (e.g., RS-485, CAN), audio paths, or any circuit where voltage transients may swing above and below ground. No external polarity configuration is required.
Does the 1.5KE15CA have UL recognition for safety-critical applications?
Yes, the 1.5KE15CA carries Underwriters Laboratories recognition under UL 497B (File #116110, QVGV2 category) for isolated loop circuit protection. This certification covers dielectric withstand, endurance conditioning, and strike voltage breakdown testing-validating its use in medical, industrial, and telecom equipment where component-level safety compliance is required.
What is the maximum steady-state power dissipation for the 1.5KE15CA?
The 1.5KE15CA has a steady-state power dissipation (PD) rating of 5.0 W at lead temperature (TL) ≤ 75°C with 3/8″ lead length, derating linearly at 20 mW/°C above TL = 75°C. This rating applies only to continuous DC or low-frequency reverse bias-not to transient suppression duty cycles-and must be verified using thermal modeling based on actual PCB copper area and airflow.
How does the 1.5KE15CA compare to unidirectional TVS diodes like 1.5KE15A?
The 1.5KE15CA differs from the unidirectional 1.5KE15A by providing symmetrical clamping for both positive and negative transients, whereas 1.5KE15A clamps only in one direction and requires correct polarity installation. The 1.5KE15CA's bidirectional behavior eliminates orientation errors during assembly and simplifies protection of AC or floating signals-critical in applications like telecom line interfaces and isolated sensor inputs.
1.5KE15CA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 12.8V
- Voltage - Breakdown (Min):
- 14.3V
- Voltage - Clamping (Max) @ Ipp:
- 21.2V
- Current - Peak Pulse (10/1000µs):
- 74A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -50°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201
1.5KE15CA FAQ
1.How can I place an order for 1.5KE15CA through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE15CA 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 1.5KE15CA reliable?
The price and inventory of 1.5KE15CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE15CA is usually 5 days.
3.What payment methods are accepted for 1.5KE15CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE15CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE15CA?
1.5KE15CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE15CA 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 1.5KE15CA?
For technical support, including 1.5KE15CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE15CA requirements.
6.How does Aetrix verify that 1.5KE15CA is sourced from the original manufacturer or authorized distributors?
All 1.5KE15CA 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 1.5KE15CA meets industry standards.
7.What is the process for return or replacement of 1.5KE15CA?
All 1.5KE15CA units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE15CA, 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 1.5KE15CA part is unused and in its original packaging.
Return procedure for 1.5KE15CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE15CA 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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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
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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