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Littelfuse has launched the TLSM series of touch switches suitable for surface mount technology (SMT). The TLSM series is designed with an ultra-long lifespan of up to 2 million cycles, making it one of the most durable touch switches on the market and highly suitable for high-frequency usage environments. Its compact 3.45mm height and single-pole double-throw (SPDT) configuration offer greater circuit flexibility, enabling support for complex and diverse application scenarios. (Watch the video

The TLSM series features soft actuators that provide precise haptic feedback to enhance user experience, making it particularly suitable for noise-sensitive environments. The dust and water resistance rating of this switch is IP54, ensuring reliable performance even in harsh industrial or outdoor conditions. It supports A wide voltage range (DC 1 V-16 V) and current range (10 μA-50 mA), is compatible with various low-power applications, and can be seamlessly integrated into modern electronic designs.

Characteristics and advantages:

· Long service life: The rated service life can reach up to 2 million times, far exceeding that of traditional touch switches. It is durable and reduces maintenance.

· SPDT configuration: Enhance circuit design flexibility through two output options, extending functionality beyond the standard SPST touch switch. ;

· Compact multi-functional design: Highly suitable for applications with limited space such as game controllers, remote controls, and industrial control panels;

· Operate a quiet soft actuator: Provide precise haptic feedback with minimal noise, suitable for noise-sensitive environments;

· Environmental protection: IP54 protection rating, providing reliable dust and water resistance in harsh industrial and outdoor conditions;

· Efficient manufacturing: Offers roll packaging and has been optimized for the automated assembly process.

The TLSM series has reached a new level in both accuracy and durability. Gavin Xu, the engineering technology development manager of Littelfuse's Electronic business unit, said, "Its compact design, ultra-high sensitivity and long service life provide unparalleled reliability for game controllers, electric vehicle control panels, medical devices, etc." TLSM is specifically designed to achieve seamless integration in SMT and has set new standards in terms of performance and versatility.

Market and Application

The TLSM series is specially designed for various application scenarios and can be widely used in the following fields:

· Industrial applications: Control panels, instruments and meters, robots and elevator buttons with extremely high requirements for reliability and durability;

· Transportation: Reliable operation in vehicle instrument panels, control units, door handles and electric vehicle charging systems;

· Consumer electronics: Enhance the user experience of remote controls, smart home devices, robot vacuum cleaners, lawn mowers and handheld devices;

Medical devices: Applicable to portable diagnostic tools, wearable medical devices, surgical instruments and other critical medical devices with extremely high requirements for accuracy and reliability.

The TLSM series expands the Littelfuse touch switch product portfolio. The provided SPDT function and longer service life complement the KSC DCT (dual-loop technology) switch series. This product is an upgraded version of the TLS series, offering greater durability while maintaining a compact form factor, making it an ideal choice for next-generation electronic devices that require long-term stable operation.

Supply situation

The TLSM series touch switches are available in tape and reel packaging, with a minimum order quantity of 1,100 pieces. Sample requests are accepted through globally authorized Littelfuse distributors. For the list of authorized Littelfuse distributors, please visit Littelfuse.com.

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