Datasheet

Reed Switch - Sub Miniature & Tiny Switches
• Small physical size
• Centre or offset contact configurations
• High speed switching
Form A
These tiny reed switches are designed for low power
and high speed switching with maximum sensitivity.
Their extremely small size make them ideal for Dual In
Line packages, or magnet operation.
Click here
for Application Notes
NORMALLY OPEN
Sub-Miniature Normally Open Tiny Size Normally Open Very Tiny
Parameters Type SRA200G SRA258 SRA260G TRA211G TRA291G TRA294G VDA200H
Contact form - - A A A A *A A A
Contact material - - Rh Rh Rh Rh Rh Rh Durel
Switching capacity max. W/VA 12 12 40 1 10 10 .25
Switching voltage max. VAC/DC 230 230 230 24 100 150 30
Switching current max. A 1.0 1.0 2.0 0.1 0.3 .5 0.01
Carrying current max. A 2.0 2.0 3.0 0.3 1.0 1.0 -
Dielectric strength min. VDC 400 400 400 150 200 250 150
Initial Contact resistance max. mohms 100 100 80 150 150 150 500
Insulation resistance min. ohms
10
11
10
14
10
11
10
9
10
9
10
10
10
9
Operate sensitivity range AT 20...50 20...50 30...50 10..30 10..40 15...35 5...20
Release sensitivity min. AT 5 5 15 5 5 5 3
Operate time including bounce max. ms 2.5 2.5 2.5 0.6 0.8 2.0 0.2
Bounce time max. ms 0.5 0.5 0.5 0.3 0.5 0.2 0.08
Release time max. ms 0.10 0.10 0.10 0.05 0.05 0.05 0.05
Resonant frequency typ. Hz 2,900 2,900 4,200 7,500 2750 5,000 -
Operating frequency max. Hz 200 200 300 500 500 200 -
Vibration 35 g Hz 2,000 2,000 2,000 2,000 - 2,000 -
Shock 11ms g 50 50 50 30 30 50 -
Capacitance typ. pF 0.5 0.5 0.5 0.2 0.3 0.7 0.2
Operating temp range °C -40...+150 -40...+125 -40...+150 -40...+125
Dimensions
Total length A max. mm 55.0 55.0 55.0 36.0 44.5 55.0 26.7
Glass length B max. mm 19.0 19.0 19.0 10.0 13.0 14.1 5.4
Glass diameter C max. mm 2.6 2.6 2.6 2.0 2.3 2.3 1.4
Wire diameter D nom. mm 0.55 0.55 0.70 0.40 0.35x0.6 0.50 0.25
* Offset Contact Configuration
Crydom Magnetics Ltd, 7 Cobham Road, Ferndown Industrial Estate, Wimborne, Dorset BH21 7PE
Tel: [phone] • Fax: [phone] • [e-mail]
• www.crydom.co.uk