RI-21A Coto Technology, RI-21A Datasheet

RI-21A

Manufacturer Part Number

RI-21A

Description

SWITCH REED MAG SPST 18-32AT

Manufacturer

Coto Technology

Series

RI-21r

Type

Glass Bodyr

Datasheet

1.RI-21A.pdf (2 pages)

Specifications of RI-21A

Circuit

SPST-NO

Must Operate

18 ~ 32AT

Must Release

8 ~ 22AT

Switching Current (dc) (max)

500mA

Switching Voltage (dc) (max)

200V

Switching Power (max)

10W

Magnet

Not Specified

Mounting Type

Non-Standard (Axial)

Termination Style

Axial (2 Leads)

Switch Type

Dry-Reed

Contact Form

SPST - NO

Contact Rating

500 mAmps

Magnet Type

Electromagnet

Operate Range

18 At to 32 At

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Other names

306-1188

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110

General data for all models RI-21

AT-Customization / Preformed Leads

Besides the standard models, customized products can

also be supplied offering the following options:

! Operate and release ranges to customer

! Cropped and/or preformed leads

Coils

All characteristics are measured using the Philips

Standard Coil. For definitions of the Philips Standard

Coil, refer to “Application Notes” in the Reed Switch

Technical & Application Information Section of this

catalog.

Life expectancy and reliability

The life expectancy data given below are valid for a

coil energized at 1.25 times the published maximum

operate value for each type in the RI-21 series.

No load conditions (operating frequency: 100Hz)

Life expectancy : min. 10

rate of less than 10

RI-21 Series Dry Reed Switch

specification

COTO TECHNOLOGY (USA) Tel: (401) 943-2686 / Fax (401) 942-0920

-9

with a confidence level of 90%.

operations with a failure

RI-21 Series

Micro dry-reed switch hermetically sealed in a gas-filled envelope.

Single-pole, single-throw (SPST) type, having normally open contacts,

and containing two magnetically actuated reeds.

The switch is of the double-ended type and may be actuated by an

electromagnet, a permanent magnet or a combination of both.

The device is intended for use in sensors, relays, pulse counters or

similar devices.

RI-21 Series Features

General purpose reed switch

Contact layers: gold, plated ruthenium

Excellent life expectancy and reliability

High breakdown voltage

Superior glass-to-metal seal and blade alignment

End of life criteria:

Loaded conditions (resistive load: 12 V; 4 mA;

(15 mA peak); operating frequency: 170 Hz)

Life expectancy: min. 10

of less than 10

End of life criteria:

sticking). Switching different loads involves

different life expectancy and reliability data. Further

information is available on request.

Mechanical Data

Contact arrangement is normally open; lead finish is

tinned; net mass is approximately 190 mg; and can be

mounted in any position.

Contact resistance > 1Ω after 2 ms

Release time > 2 ms (latching or contact sticking).

Contact resistance > 2Ω after 4 ms

Release time > 0.7 ms (latching or contact

(Europe) Tel: +31-45-5439343 / Fax +31-45-5427216

-8

with a confidence level of 90%.

Dimensions in inches (mm)

operations with a failure rate

Related parts for RI-21A

RI-21A Summary of contents

Page 1

... Technical & Application Information Section of this catalog. Life expectancy and reliability The life expectancy data given below are valid for a coil energized at 1.25 times the published maximum operate value for each type in the RI-21 series. No load conditions (operating frequency: 100Hz) 8 Life expectancy : min. 10 operations with a failure ...

Page 2

... For more information contact your nearest Coto Technology sales office. Soldering The switch can withstand soldering heat in accordance with “IEC 68-2-20”, test Tb, method 1B: solder bath at 350 ±10°C for 3.5 ±0.5 s. Solderability is tested in accordance with “IEC 68-2-20”, test Ta, method 3: solder globule temperature 235° ...

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