1. Introduction: Littelfuse Enhances Durability of PTS845 Series Tactile Switches

On April 1, 2025, Littelfuse, Inc. (NASDAQ: LFUS), a leading industrial technology manufacturer, announced an important enhancement to the durability of its C&K Switches PTS845 series of side-actuated tactile switches. Designed to meet the demands of electronic engineers, the PTS845 series now boasts an improved rated lifespan of up to 1,000,000 cycles, making it suitable for applications with high usage rates. The improved durability, coupled with a compact form factor and versatile configuration options, makes the PTS845 an ideal choice for space-constrained designs that require exceptional reliability and long-lasting performance.

2. Product Overview: Compact and Robust Design

The PTS845 series measures just 4.5×3.4×3.3 mm, offering a sleek and space-efficient solution for printed circuit boards (PCBs). Despite its small size, the switch is built to handle significant operational demands. It offers three different actuation force options—80gf, 160gf, and 260gf—providing flexibility to meet a wide range of user requirements. Whether you're designing for consumer electronics, telecommunications, or smart home devices, the PTS845 ensures that engineers do not have to compromise on performance or durability.

One of the defining features of the PTS845 series is its innovative support pin design, which guarantees exceptional installation strength. This design enhancement ensures that the switches remain securely in place even under the most demanding conditions, providing a solid, reliable connection on the PCB. With a rated lifespan of up to 1,000,000 cycles, the PTS845 is capable of maintaining its performance over an extended period, even under rigorous usage conditions.

3. Features and Benefits: Why PTS845 Stands Out

The PTS845 series offers a range of features that make it a superior choice for high-usage applications:

• Compact Form Factor: At just 4.5×3.4×3.3 mm, the PTS845 is an excellent choice for space-constrained PCBs. Its small size enables engineers to optimize available board space while still delivering excellent functionality and performance.

• Extended Lifespan: The PTS845 switch is designed to endure up to 1,000,000 cycles. This long operational life makes it ideal for applications that demand high durability, such as telecommunications and consumer electronics.

• Flexible Options: Offering three different actuation force levels (80gf, 160gf, 260gf) and multiple actuator colors, the PTS845 allows designers to customize the switch for unique product requirements, ensuring differentiation and customization.

• Enhanced Mounting Strength: Thanks to its support pin design, the PTS845 switch guarantees secure placement and stronger installation integrity, ensuring it remains firmly fixed on the PCB throughout its lifespan.

4. Market Applications: A Versatile Solution for Various Industries

The PTS845 series is designed to meet the rigorous demands of several key industries, including:

• Telecommunications: With its reliable performance and compact size, the PTS845 is well-suited for mobile radios, ensuring seamless operation in communication systems.

• Consumer Electronics: The switch is ideal for dash cams, gaming peripherals, and other electronic devices where compact size, high reliability, and a long operational lifespan are critical.

• Smart Home Devices: As part of the growing smart home ecosystem, the PTS845 offers excellent performance in smart devices and control systems that require tactile feedback and reliability.

The PTS845 series is a valuable addition to the electronic component landscape, providing engineers with a cost-effective solution for demanding applications that require both reliability and longevity.

5. Competitive Advantage: Why PTS845 Stands Out

The PTS845 series allows design engineers to create sleek, efficient products without sacrificing durability or performance. It delivers on high durability with a rating of up to 1,000,000 cycles, making it a high-value solution for industries requiring tactile feedback switches with extended lifespans.

Unlike many competitors, the PTS845 provides flexibility with various actuation force levels and a compact design, making it ideal for applications in consumer electronics, telecommunications, and smart home devices. By choosing the PTS845, engineers can maintain aesthetic appeal without compromising on functional strength, positioning their products as high-performance, long-lasting solutions in the market.

6. Availability and Ordering Information

The PTS845 series tactile switches are available in tape and reel packaging with a minimum order quantity of 1,400 units. Samples can be requested through authorized Littelfuse distributors globally. Engineers and manufacturers looking to integrate the PTS845 into their designs can easily access these switches through established distribution channels, ensuring timely delivery and unmatched service.

Conclusion: A Reliable Solution for High-Performance Applications

The PTS845 tactile switch series from Littelfuse represents a robust, reliable solution for applications where high performance and extended lifespan are essential. With its compact size, extended durability, and versatile actuation options, the PTS845 is perfectly suited for industries like telecommunications, consumer electronics, and smart home systems. Littelfuse's commitment to quality and innovation shines through in the PTS845, offering engineers the tools they need to create products that excel in both functionality and longevity.