1.5KE220A Transient Voltage Suppression (TVS) Diode, 185V VWM, 1500W

Skip to the beginning of the images gallery

1.5KE220A Transient Voltage Suppression (TVS) Diode, 185V VWM, 1500W

3 Reviews Add Your Review

25 people are viewing this right now

In Stock

SKU

191708689252

£1.35

Safe Checkout, Guaranteed

Details

The 1.5KE220A is a Transient Voltage Suppression (TVS) diode designed to protect sensitive electronic components from voltage transients induced by lightning, inductive load switching, and electrostatic discharge (ESD). This diode provides robust overvoltage protection, safeguarding your circuits from damage. With a standoff voltage of 185V (VWM) and a clamping voltage of 328V (VC), the 1.5KE220A effectively limits voltage spikes, preventing them from reaching sensitive components. The 1.5KE designation indicates a peak pulse power dissipation of 1.5kW, making it suitable for handling high-energy transients. This TVS diode is commonly used in power supplies, communication equipment, and industrial control systems. The 1.5KE220A offers fast response times, quickly clamping voltage spikes to safe levels.

It provides bidirectional protection, meaning it can protect circuits from both positive and negative voltage transients. The diode is available in a variety of packages, including axial leaded and surface mount options, providing flexibility in different circuit designs. It complies with industry standards for surge protection, ensuring reliable performance and compliance with regulatory requirements. The TVS diode is essential for protecting sensitive electronics from damage caused by transient voltage events. It helps to improve system reliability and reduce downtime due to component failures. The 1.5KE220A is widely used in automotive electronics, telecommunications equipment, and consumer electronics.

Its high surge capability and fast response time make it an ideal choice for protecting against lightning strikes and other high-energy transients. The diode is also used in data lines to prevent ESD damage, ensuring the integrity of data transmission. The TVS diode is a critical component in ensuring the long-term reliability of electronic devices. It provides a cost-effective solution for protecting against voltage transients, saving you money on repairs and replacements. Whether you're designing a power supply, a communication system, or an industrial control system, the 1.5KE220A TVS diode provides the robust overvoltage protection you need. Protect your valuable electronics from voltage transients with the 1.5KE220A TVS diode.

Its high surge capability and fast response time make it an essential component for any electronic design. Don't wait until it's too late, order your 1.5KE220A TVS diode today and safeguard your circuits from damaging voltage spikes!

More Information

More Information
Product Name	1.5KE220A Transient Voltage Suppression (TVS) Diode, 185V VWM, 1500W
SKU	191708689252
Price	£1.35
1.5KE220A Transient Voltage Suppression (TVS) Diode, 185V VWM, 1500W Color	As per image
Category	Diodes
Brand	Nikko Electronics ltd
Product Code	191708689252
Availability	Yes

Reviews 3

Write Your Own Review

Shipping and Returns

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

Shipping cost is based on order value. Just add 1.5KE220A Transient Voltage Suppression (TVS) Diode, 185V VWM, 1500W to your cart and use the Shipping Calculator to see the shipping price. We want you to be 100% satisfied with your 1.5KE220A Transient Voltage Suppression (TVS) Diode, 185V VWM, 1500W purchase. Items can be returned or exchanged within 30 days of delivery.

FAQ

FAQs for Products

How does the 1.5KE220A Transient Voltage Suppression (TVS) Diode handle unidirectional versus bidirectional protection in DC circuits?
The 1.5KE220A Transient Voltage Suppression (TVS) Diode is a unidirectional component, as indicated by the 'A' suffix in its part number. In DC circuit applications, this means the device must be installed with the correct polarity, typically with the cathode connected to the positive rail and the anode to the ground. When a transient overvoltage event occurs, the 1.5KE220A Transient Voltage Suppression (TVS) Diode enters avalanche breakdown mode, shunting the excess current to ground and protecting sensitive downstream components. Unlike bidirectional versions (suffix 'CA'), this unidirectional diode also provides a forward-biased path for clamping negative-going transients, similar to a standard rectifier, though its primary function is high-speed overvoltage protection. Engineers choosing the 1.5KE220A Transient Voltage Suppression (TVS) Diode for power supply rails must ensure that the operating voltage does not exceed the 185V reverse standoff voltage (VWM) to prevent unnecessary leakage current or premature degradation of the semiconductor junction during normal operation.
What are the critical considerations for the 1500W peak pulse power rating of the 1.5KE220A Transient Voltage Suppression (TVS) Diode?
The 1.5KE220A Transient Voltage Suppression (TVS) Diode is rated for a peak pulse power (PPPM) of 1500W, but it is vital to understand that this rating is based on a standard 10/1000μs exponential decay waveform. For shorter transients, such as an 8/20μs pulse typical of induced lightning, the 1.5KE220A Transient Voltage Suppression (TVS) Diode can actually handle significantly higher peak power levels. However, if the transient duration exceeds the millisecond range, the power handling capability drops sharply. When integrating the 1.5KE220A Transient Voltage Suppression (TVS) Diode into industrial control systems or power supplies, designers must calculate the total energy (Joules) the diode will absorb during a worst-case surge event. Repeated exposure to transients near the 1500W limit can cause cumulative thermal stress, so it is often recommended to use the 1.5KE220A Transient Voltage Suppression (TVS) Diode in conjunction with proper PCB trace widths and thermal relief to ensure long-term reliability in high-surge environments.
Why is the 185V Standoff Voltage (VWM) of the 1.5KE220A Transient Voltage Suppression (TVS) Diode the most important metric for circuit design?
The 185V Reverse Standoff Voltage (VWM) is the maximum voltage at which the 1.5KE220A Transient Voltage Suppression (TVS) Diode remains in a non-conducting state with minimal leakage current (typically in the microamp range). When selecting the 1.5KE220A Transient Voltage Suppression (TVS) Diode, the VWM must be equal to or slightly higher than the maximum continuous operating voltage of the circuit being protected. If you were to use this diode on a rail that exceeds 185V, the 1.5KE220A Transient Voltage Suppression (TVS) Diode might begin to conduct during normal operation, leading to power loss, excessive heat generation, and potential failure of the diode. It is important to distinguish VWM from the breakdown voltage (VBR), which for the 1.5KE220A Transient Voltage Suppression (TVS) Diode starts around 209V. By maintaining a 185V VWM, the 1.5KE220A Transient Voltage Suppression (TVS) Diode ensures that the protection remains invisible to the circuit until a genuine transient spike occurs, safeguarding the system without interfering with standard electrical performance.
Is the 328V Clamping Voltage (VC) of the 1.5KE220A Transient Voltage Suppression (TVS) Diode safe for standard 200V-rated capacitors?
When the 1.5KE220A Transient Voltage Suppression (TVS) Diode is subjected to its maximum peak pulse current (IPP), the voltage across the device can rise to a maximum clamping voltage of 328V. This is a critical factor for hardware designers; any component located downstream from the 1.5KE220A Transient Voltage Suppression (TVS) Diode must be able to withstand 328V for the duration of the transient. If you are using capacitors or MOSFETs rated for only 200V or 250V, the 1.5KE220A Transient Voltage Suppression (TVS) Diode may not provide a low enough clamping ceiling to prevent damage to those specific parts. In such cases, you might need to reconsider the component voltage ratings or use a multi-stage protection scheme. The 328V VC represents the 'worst-case' voltage level that the protected line will see during a high-energy surge, making the 1.5KE220A Transient Voltage Suppression (TVS) Diode an excellent choice for robust 185V systems where downstream components have a high dielectric withstand voltage or sufficient safety margins.
How does the response time of the 1.5KE220A Transient Voltage Suppression (TVS) Diode compare to Metal Oxide Varistors (MOVs)?
The 1.5KE220A Transient Voltage Suppression (TVS) Diode offers a significantly faster response time compared to Metal Oxide Varistors (MOVs). While an MOV might take tens of nanoseconds to respond to a voltage spike, the 1.5KE220A Transient Voltage Suppression (TVS) Diode reacts in picoseconds (theoretically less than 1ps for unidirectional types). This makes the 1.5KE220A Transient Voltage Suppression (TVS) Diode far superior for protecting sensitive semiconductor devices, such as microcontrollers or integrated circuits, which can be destroyed by the 'overshoot' voltage that occurs during the slow turn-on time of an MOV. Furthermore, the 1.5KE220A Transient Voltage Suppression (TVS) Diode does not suffer from the same wear-out mechanism as MOVs; as long as the diode is operated within its peak power and temperature limits, it will not degrade after multiple surge events. This reliability makes the 1.5KE220A Transient Voltage Suppression (TVS) Diode the preferred choice for high-uptime industrial and telecommunications equipment where maintenance-free protection is required.
What thermal derating factors should be applied to the 1.5KE220A Transient Voltage Suppression (TVS) Diode in high-temperature environments?
The performance of the 1.5KE220A Transient Voltage Suppression (TVS) Diode is temperature-dependent, and its peak pulse power dissipation capability decreases as the ambient temperature rises. Most datasheets specify the 1500W rating at 25°C; however, if the 1.5KE220A Transient Voltage Suppression (TVS) Diode is operating in an industrial enclosure at 75°C or 100°C, the power rating must be derated according to the standard derating curve (often losing about 50% of its capacity at 150°C). Proper PCB layout is essential for managing the thermal load; since the 1.5KE220A Transient Voltage Suppression (TVS) Diode is a through-hole DO-201 package, keeping the leads short and using large copper pads can help dissipate heat away from the junction. If the 1.5KE220A Transient Voltage Suppression (TVS) Diode is expected to handle frequent transients in a high-heat environment, designers should ensure adequate airflow or consider a higher-power TVS series to maintain the necessary safety margins and prevent thermal runaway during a surge event.
Can the 1.5KE220A Transient Voltage Suppression (TVS) Diode be used for high-speed data line protection despite its high power rating?
While the 1.5KE220A Transient Voltage Suppression (TVS) Diode is exceptionally effective for power supply protection, its use in high-speed data lines is limited by its junction capacitance. High-power TVS diodes like the 1.5KE220A Transient Voltage Suppression (TVS) Diode typically have a relatively high parasitic capacitance (often in the range of several hundred to over a thousand picofarads). In high-frequency communication circuits, this capacitance can cause significant signal distortion, insertion loss, and reduced bandwidth. Therefore, the 1.5KE220A Transient Voltage Suppression (TVS) Diode is best suited for DC power rails, low-speed control signals, or AC line filtering where signal integrity is not compromised by capacitance. For high-speed data protection, one would typically use a low-capacitance TVS array. However, for rugged industrial sensors or 48V-110V DC power inputs, the 1.5KE220A Transient Voltage Suppression (TVS) Diode provides the heavy-duty clamping necessary to withstand the harsh electrical transients found in those environments.