A switch supports PCB design with performance, assembly, and operation, helping engineers fit configuration functions into electronic systems.
Littelfuse, Inc., an industrial technology manufacturing company focused on the safe and efficient transfer of electrical energy, has introduced the Littelfuse/C&K TDB Series, an ultra-miniature, half-pitch surface-mount DIP switch family for high-density PCB layouts where space, reliability, and manufacturability are critical.
The TDB Series offers contact ratings up to 50 V DC and 100 mA (steady state), along with a mechanical and electrical life of 1,000 cycles, supporting reliable configuration settings in low-power control systems. The switches are compatible with standard SMT processes and are available in tube or tape-and-reel packaging to support high-volume production.
Designed with a 1.27 mm half-pitch footprint, the series enables higher component density while maintaining electrical and mechanical reliability. It achieves this by reducing the internal mechanism size, helping engineers fit configuration and addressing switches into compact layouts without affecting electrical performance or assembly yield.
The TDB Series includes gold-plated bifurcated contacts to ensure stable, low-resistance signal integrity. It also features a top-tape sealed construction that supports automated surface-mount soldering and post-reflow aqueous cleaning, improving manufacturing efficiency.
Designed as a complementary solution to C&K’s TDA Series, the TDB Series expands design flexibility for applications that require ultra-compact, surface-mount DIP switches.
The TDB Series is well-suited for industrial control equipment, power supplies and inverter systems, security and fire alarm systems, building automation and smoke detection, as well as consumer IoT and smart home devices.
“When space is critical, and reliability is non-negotiable, the TDB Series delivers exactly what design engineers need,” said Jesus Santos, Global Product Manager at Littelfuse. “Its ultra-miniature footprint, gold-plated contacts, and washable sealing enable confident designs even in dense, demanding applications.”
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