USA: +1 866.782.6339 | salesusa@standexmeder.com

EMEA: +49 7733/9253200 | salesemea@standexmeder.com

APAC: +86 21/37606000 | salesasia@standexmeder.com

standexelectronics.com

Series Datasheet

Version 01

May 2024

Page

S. Knoblauch

2

MK33 Series Reed Sensors

MK33 Reed Sensor

Dimensions (mm) and Lead Specifications

Overall Length

13 - 17.95

Lead Dia.

0.90 - 0.95

Glass Length

10 - 14

Lead Design

compact

Glass Dia.

2 - 2.2

Layout

Top View

Please note: All technical specifications on this series datasheet refer to the standard product range. Modifications in the sense of technical progress are reserved. For

general information only. For more specific information, please consult the product datasheet, available upon request.

This series datasheet could contain technical inaccuracies or typographical errors. Changes are periodically made to the information herein. These change will be

incorporated in future revisions.

For deviating values, most current specifications and products please contact your nearest sales office.

Glossary Magnetic Sensitivity

Sensitivity

A

B

C

D

E

F

G

AT

05-10 10-15 15-20 20-25 25-30 30-35 35-40

Environmental Data

Unit

Shock Resistance (max.)

1/2 sine, duration 11ms, in 3 axis

50

g

Vibration Resistance (max.)

20

g

Operating Temperature

-40 to 130

°C

Storage Temperature

-55 to 130

°C

Soldering Temperature (max.) 5 sec. max.

260

°C

Handling & Assembly Instructions



Use proper lead clamping or heat sinking techniques to prevent

mechanical and/or heat stress during, soldering, and welding



Mechanical shock as the result of dropping the reed sensor

typically from greater than 12” may change its magnetic

sensitivity and/or destroy the sensor



Reflow Soldering Conditions according to JEDEC norm J-STD-

020D.1

Glossary Contact Form

Form A

NO = Normally Open Contacts

SPST = Single Pole Single Throw

Form B

NC = Normally Closed Contacts

SPST = Single Pole Single Throw

Form C

Changeover

SPDT = Single Pole Double Throw

Life Test Data

*Load increase reduces life expectancy of Reed Switches

Typical Number of Operations

KSK-1A87

100V/10mA

20V/500mA

10V/100mA

10V/4mA

<5V/10mA

1,E+05

1,E+06

1,E+07

1,E+08

1,E+09

1,E+10

Life Test Data

*Load increase reduces life expectancy of Reed Switches

Load

Typical Number of Operations

KSK-1A66

100V/10mA

20V/500mA

10V/100mA

10V/4mA

<5V/10mA

1,E+05

1,E+06

1,E+07

1,E+08

1,E+09

1,E+10