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1.5KE18CA Bidirectional TVS Diode

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1.5KE18CA

25.2V Clamp 59.5A Ipp Tvs Diode Through Hole DO-201

£2.25

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The 1.5KE18CA is a highly reliable Transient Voltage Suppressor (TVS) diode designed to safeguard sensitive electronic equipment from the damaging effects of voltage transients. Encased in a robust D5.4x7.5 package, this bidirectional TVS diode offers a standoff voltage of 15.3V and an impressive peak pulse power dissipation of 1500W (1.5kW), making it an ideal solution for protecting circuits against surges caused by lightning, electrostatic discharge (ESD), inductive load switching, and other transient voltage events. The bidirectional clamping characteristic of the 1.5KE18CA means that it provides protection against both positive and negative voltage transients, making it suitable for AC and DC circuits. This eliminates the need to use two separate unidirectional TVS diodes in many applications, simplifying circuit design and reducing component count. The 15.3V standoff voltage allows normal circuit operation up to this voltage level, while the TVS diode rapidly clamps any voltage exceeding this threshold to a safe level, protecting downstream components from overvoltage damage. The 1500W peak pulse power dissipation rating indicates the diode's ability to absorb high-energy transients without failure.

This is crucial for protecting against severe surge events, such as those caused by direct lightning strikes. The compact D5.4x7.5 package allows for easy integration into a wide range of electronic devices, even where space is limited. The package is designed for efficient heat dissipation, ensuring that the diode can handle high power surges without overheating. The 1.5KE18CA is commonly used in various applications, including power supplies, telecommunications equipment, industrial control systems, automotive electronics, and consumer electronics. In power supplies, it protects against voltage spikes that can damage sensitive components such as integrated circuits and microcontrollers. In telecommunications equipment, it safeguards against lightning-induced surges that can disrupt communication lines and damage equipment.

In automotive electronics, it protects against voltage transients caused by load dump and other electrical events. The selection of an appropriate TVS diode is essential for ensuring the reliable operation of any electronic system. The 1.5KE18CA offers a compelling combination of high power handling capability, fast response time, bidirectional protection, and compact size, making it an excellent choice for protecting sensitive electronics from voltage transients. The bidirectional configuration simplifies circuit design and reduces component count, while the robust D5.4x7.5 package ensures efficient heat dissipation. Invest in the protection of your electronic equipment – order the 1.5KE18CA TVS diode today and gain the peace of mind that comes with knowing your circuits are protected from damaging voltage transients. Protect your valuable electronics from the unpredictable nature of voltage surges – add the 1.5KE18CA to your cart now and ensure a stable and reliable operating environment for your devices.

Don't wait until a surge damages your equipment; proactively implement protection with this high-performance TVS diode.

More Information

More Information
Product Name	1.5KE18CA Bidirectional TVS Diode
Condition	New
SKU	1.5KE18CA
Price	£2.25
1.5KE18CA Bidirectional TVS Diode Color	As per image
Category	Diodes
Brand	Nikko Electronics ltd
Product Code	1.5KE18CA
Availability	Yes

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Shipping cost is based on order value. Just add 1.5KE18CA Bidirectional TVS Diode to your cart and use the Shipping Calculator to see the shipping price. We want you to be 100% satisfied with your 1.5KE18CA Bidirectional TVS Diode purchase. Items can be returned or exchanged within 30 days of delivery.

FAQ

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What are the primary applications where the 1.5KE18CA Bidirectional TVS Diode's 15.3V standoff voltage and 1500W peak pulse power are most beneficial?
The 1.5KE18CA Bidirectional TVS Diode, with its 15.3V standoff voltage and robust 1500W (1.5kW) peak pulse power dissipation, is ideally suited for protecting a wide range of sensitive electronic equipment in demanding environments. Its specifications make it excellent for industrial control systems, data communication lines, power supplies, and automotive electronics where transient overvoltages from lightning, inductive load switching, or electrostatic discharge (ESD) are common. The 15.3V standoff voltage is crucial for circuits operating at or below this level, ensuring effective clamping without interfering with normal operation. The high 1500W power rating allows it to absorb significant energy from severe transient events, providing superior surge protection for microcontrollers, sensors, and communication interfaces, thereby enhancing system reliability and preventing costly damage.
How does the bidirectional clamping capability of the 1.5KE18CA Bidirectional TVS Diode simplify circuit design and enhance protection compared to unidirectional TVS solutions?
The bidirectional clamping characteristic of the 1.5KE18CA Bidirectional TVS Diode offers significant advantages in circuit design and protection efficiency. Unlike unidirectional TVS diodes, which only protect against transients in one polarity, the 1.5KE18CA provides symmetrical protection against both positive and negative voltage transients. This feature eliminates the need for two separate unidirectional TVS diodes, simplifying the bill of materials, reducing board space, and lowering assembly costs. In AC circuits, or DC circuits where transients can occur in either direction (e.g., motor control, data lines with fluctuating signals), a single 1.5KE18CA Bidirectional TVS Diode can provide comprehensive protection. This streamlines design, reduces complexity, and ensures robust, dual-polarity surge suppression without compromise.
What are the critical factors to consider when integrating the 1.5KE18CA Bidirectional TVS Diode into a circuit to ensure optimal surge protection for sensitive components?
When integrating the 1.5KE18CA Bidirectional TVS Diode, several critical factors must be considered to achieve optimal surge protection. Firstly, ensure the circuit's normal operating voltage is below the 15.3V standoff voltage (Vwm) to prevent the diode from conducting during normal operation. Secondly, the clamping voltage (Vc) at the expected peak pulse current (Ipp) must be lower than the maximum allowable voltage for the protected components. The 1500W peak pulse power rating dictates the maximum surge energy the device can absorb; verify this matches potential threat levels. Additionally, minimize lead inductance by placing the 1.5KE18CA Bidirectional TVS Diode as close as possible to the protected component. Proper grounding and trace routing are also crucial to effectively divert transient energy away from sensitive circuitry.
Can the 1.5KE18CA Bidirectional TVS Diode effectively protect against both lightning-induced surges and electrostatic discharge (ESD) events, and what are its specific performance characteristics for these threats?
Yes, the 1.5KE18CA Bidirectional TVS Diode is highly effective in protecting against both lightning-induced surges and electrostatic discharge (ESD) events. For lightning surges, its 1500W peak pulse power rating (10/1000µs waveform) signifies its ability to absorb substantial energy from such high-power transients, diverting the damaging current away from sensitive ICs. While primarily designed for industrial surge protection, its fast response time (typically
What is the typical clamping voltage of the 1.5KE18CA Bidirectional TVS Diode at its rated peak pulse current, and why is this parameter crucial for designing robust protection circuits?
The clamping voltage (Vc) is a critical parameter for the 1.5KE18CA Bidirectional TVS Diode, representing the maximum voltage across the device when it's conducting its rated peak pulse current (Ipp). For the 1.5KE18CA, the typical clamping voltage at 1500W peak pulse power (10/1000µs waveform) is approximately 24.4V (at 61.5A Ipp, for a nominal 18V breakdown voltage variant; specific datasheet values should be consulted for precise figures for the 1.5KE18CA which has an 18V nominal breakdown voltage). This value is crucial because it dictates the maximum voltage that the protected circuit will experience during a transient event. To design a robust protection circuit, the clamping voltage of the 1.5KE18CA Bidirectional TVS Diode must always be significantly lower than the absolute maximum voltage rating of the sensitive components it is designed to protect, ensuring they remain undamaged even under severe surge conditions.
How does the D5.4x7.5 package of the 1.5KE18CA Bidirectional TVS Diode influence its thermal management and suitability for various PCB form factors in high-power applications?
The D5.4x7.5 package of the 1.5KE18CA Bidirectional TVS Diode is a robust, commonly used axial-leaded through-hole package, typically DO-201AE or similar. Its relatively larger size compared to SMD components offers excellent thermal dissipation capabilities, crucial for handling the 1500W peak pulse power. The larger thermal mass and surface area allow it to absorb and dissipate significant energy during transient events without excessive temperature rise, which is vital for maintaining device integrity and reliability. While through-hole packages require more board space and are less suitable for ultra-compact, high-density PCBs, they are highly preferred in industrial, automotive, and power electronics applications where ruggedness, ease of assembly, and superior thermal performance are prioritized over miniaturization. This package ensures the 1.5KE18CA Bidirectional TVS Diode can perform reliably in demanding, high-power surge protection scenarios.
What are the considerations for ensuring the long-term reliability and operational lifespan of the 1.5KE18CA Bidirectional TVS Diode in systems experiencing frequent transient events?
To ensure the long-term reliability and operational lifespan of the 1.5KE18CA Bidirectional TVS Diode, particularly in systems with frequent transient events, several design considerations are essential. First, always ensure that the peak pulse power (Ppp) of expected transients does not exceed the 1500W rating of the 1.5KE18CA. Repeated exposure to transients exceeding this limit, or even sustained exposure near the limit, can degrade the device. Secondly, adequate thermal management is crucial; while the D5.4x7.5 package aids in heat dissipation, consider ambient operating temperature and potential heat sinking if the device is expected to absorb energy frequently. Finally, proper selection of the standoff voltage (15.3V) prevents leakage currents that could lead to premature aging. By adhering to these guidelines and selecting the 1.5KE18CA Bidirectional TVS Diode with appropriate derating for application-specific stress, designers can maximize its operational lifespan and system reliability.