Y213 Normally Open (NO) Green Reed Switch, 2×14mm, Silver Leads

Description

The Y213 is a miniature, normally-open (Form A) glass reed switch designed for magnetic proximity sensing, position detection, and low-power switching applications. It consists of two ferromagnetic reed blades hermetically sealed in a glass envelope filled with inert gas. When a magnetic field is brought near, the blades magnetize and attract each other, closing the circuit. When the field is removed, the blades spring apart, opening the circuit .

The 2×14mm designation refers to the glass envelope diameter (2mm) and length (14mm), with a total lead-to-lead length of approximately 45mm . The Y213 is widely used in door/window magnetic contacts, proximity sensors, liquid level floats, and DIY electronics projects .

Critical limitations: This is a normally-open switch—it closes only in the presence of a magnetic field. The glass envelope is fragile and must not be subjected to mechanical stress during lead bending or soldering. The contact rating is modest—do not use for mains voltage switching without appropriate isolation.

Features

• Normally Open (Form A) Operation: Closes when a magnetic field is applied; opens when removed .

• Hermetically Sealed Glass Envelope: Inert gas filling protects contacts from oxidation .

• Compact 2×14mm Size: Small footprint suitable for space-constrained installations .

• Fast Switching: Operate time as low as 0.45ms per detailed datasheets .

• Wide Operating Temperature: -50°C to +140°C per multiple suppliers .

• Low Contact Resistance: ≤100mΩ (varies by source) .

• Long Electrical Life: Rated for 10⁶ to 10⁸ cycles depending on load .

Technical Specifications