KSK-1A66 Series Reed Switch
The KSK-1A66 Series is a miniature, high-performance reed switch designed for automotive-grade reliability and general-purpose use. With a compact glass body measuring 14.0 mm in length and 2.2 mm in diameter, this SPST-NO (Form A) switch supports switching voltages up to 180 VDC and currents up to 0.5 A, with a rated power of 10 W.
Its hermetically sealed construction ensures consistent operation in harsh environments, while a wide range of operate sensitivities (10–40 AT) allows for flexible magnetic actuation. The KSK-1A66 is UL-approved and widely used across automotive, industrial, and consumer electronics applications.
Standards and Certifications
- Miniature design ideal for compact and embedded systems
- Automotive-grade reliability for high-performance environments
- Hermetically sealed contacts protect against moisture and contaminants
- Flat lead configuration supports secure mounting and automated assembly
- No power required for actuation, enabling energy-efficient designs
- Fast switching response for precise control and timing
| Overall Length mm (inches) | 44.1 (1.736) |
| Glass Length Max. mm (inches) | 14.0 (0.551) |
| Glass Dia. Max. mm (inches) | 2.20 (0.086) |
| Lead Dia. mm (inches) | 0.5 (0.019) |
| Contact Form | 1A (SPST) Normally Open (N.O.) |
| Pull-In Range | 10-40 AT |
| Rated Power Max. | 10W/180VDC/0.5 Amp DC |
- Automotive sensors and controls
- Industrial automation systems
- Consumer electronics and appliances
- Security and alarm systems
- Test and measurement equipment (ATE)
- Medical devices requiring non-contact switching