CHANGE-OVER Magnetic Reed Switches 31

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  2. Magnetic Reed Switches
Manufacturers
    • Comus International
    • Coto Technology
    • Littelfuse
    • Meder Electronic Ag
    • Standex-Meder Electronics
Switch Type
    • DRY REED SWITCH
Mounting Feature
    • SURFACE MOUNT-RIGHT ANGLE
    • SURFACE MOUNT-STRAIGHT
    • THROUGH HOLE-STRAIGHT
Switch Function (1)
    • CHANGE-OVER
    • SPDT
    • SPST
Maximum Pull In
    • 10 AT
    • 15 AT
    • 18 AT
    • 20 AT
    • 23 AT
    • 25 AT
    • 28 AT
    • 30 AT
    • 33 AT
    • 35 AT
    • 38 AT
    • 40 AT
    • 43 AT
    • 48 AT
    • 50 AT
    • 53 AT
    • 55 AT
    • 58 AT
    • 60 AT
    • 63 AT
    • 65 AT
    • 68 AT
    • 70 AT
    • 73 AT
    • 75 AT
    • 78 AT
    • 80 AT
    • 83 AT
AC Maximum Rating R Load (Contact)
    • .18A@120VAC
    • .1A@24VAC
    • .25A@100VAC
    • .25A@140VAC
    • .35@140VAC
    • .35A@140VAC
    • .35A@265VAC
    • .3A@265VAC
    • .5A@140VAC
    • .5A@175VAC
    • .7A@140VAC
    • 0.18A@120VAC
    • 0.35A@350VAC
    • 1.1A@265VAC
    • 1.1A@265VDC
    • 1A@200VAC
    • 1A@350VAC
    • 2.1A@280VAC
Minimum Drop-out Value
    • 17 AT
    • 2 AT
    • 3 AT
    • 5 AT
Minimum Pull In
    • 10 AT
    • 12 AT
    • 15 AT
    • 17 AT
    • 20 AT
    • 22 AT
    • 25 AT
    • 27 AT
    • 32 AT
    • 37 AT
    • 42 AT
    • 47 AT
    • 5 AT
    • 50 AT
    • 55 AT
    • 57 AT
    • 6 AT
    • 62 AT
    • 65 AT
    • 67 AT
    • 70 AT
    • 75 AT
    • 77 AT
Electrical Life
    • 10000000 Cycle(s)
Packing Method
    • BOX; BULK
    • BULK
    • TR
    • TR, 13 INCH
Body Length/Diameter
    • 1.8 mm
    • 12.8 mm
    • 14.73 mm
    • 14.8 mm
    • 15.24 mm
    • 16 mm
    • 17.78 mm
    • 18.8 mm
    • 2.2 mm
    • 2.28 mm
    • 2.54 mm
    • 2.66 mm
    • 2.84 mm
    • 5.25 mm
    • 5.33 mm
    • 5.54 mm
    • 6.4 mm
Body Width
    • 2.31 inch
    • 2.4 inch
    • 2.41 inch
    • 3.2 inch
    • 3.3 inch
    • 3.7 inch
Sealing
    • HERMETICALLY SEALED
    • WATER PROOF
Body Height
    • 10.16 mm
    • 10.5 mm
    • 12.7 mm
    • 14 mm
    • 14.73 mm
    • 15.24 mm
    • 19.69 mm
    • 2.31 mm
    • 2.51 mm
    • 2.54 mm
    • 2.92 mm
    • 20.32 mm
    • 3 mm
    • 3.25 mm
    • 39.67 mm
    • 4.2 mm
    • 4.32 mm
    • 5 mm
    • 50.8 mm
    • 7 mm
DC Maximum Rating R Load (Contact)
    • .25A@175VDC
    • .35A@140VDC
    • .35A@175VDC
    • .4A@200VDC
    • .5A@1000VDC
    • .5A@175VDC
    • .5A@200VDC
    • .5A@500VDC
    • 0.25A@170VDC
    • 0.25A@175VDC
    • 0.5A@200VDC
    • 0.5A@500VDC
    • 1.5A@250VDC
    • 1.5A@500VDC
    • 1A@200VDC
    • 3A@400VDC
Maximum Operating Temperature
    • 105 Cel
    • 125 Cel
    • 130 Cel
    • 70 Cel
    • 85 Cel
Maximum AC Contact Current
    • .1 A
    • .18 A
    • .25 A
    • .3 A
    • .35 A
    • .5 A
    • .7 A
    • 1 A
    • 1.1 A
    • 2.1 A
Minimum Operating Temperature
    • -20 Cel
    • -40 Cel
    • -55 Cel
    • -75 Cel
Nominal Resonant Frequency
    • .85 kHz
    • 11 kHz
    • 11000 kHz
    • 14 kHz
    • 18 kHz
    • 2.1 kHz
    • 2.75 kHz
    • 21.3 kHz
    • 3.2 kHz
    • 3.9 kHz
    • 4 kHz
    • 5.2 kHz
    • 5.3 kHz
    • 5.5 kHz
    • 6 kHz
    • 6.25 kHz
    • 6.5 kHz
    • 8.5 kHz
Terminal Finish
    • MATTE TIN
    • TIN
    • Tin (Sn)
Maximum DC Contact Current
    • .25 A
    • .35 A
    • .4 A
    • .5 A
    • 1 A
    • 1.5 A
    • 3 A
Termination Type
    • SOLDER
Manufacturer Series
    • 2119401015
    • CT05
    • CT10
    • DRR-129
    • FLEX-14
    • HA15-2
    • KSK-1A35-1520
    • KSK-1C90F-1015
    • KSK-1C90F-1520
    • KSK-1C90F-2025
    • MACD-14
    • MARR-5
    • MASM-14
    • MDCG-4
    • MDRR-DT
    • MDSM-10
    • MDSM-4
    • MDSM-DT
    • MDSR-10
    • MDSR-7
    • MLRR-3
    • MLRR-4
    • MLSM-3
    • MLSM-4
Maximum DC Contact Voltage
    • 1000 V
    • 140 V
    • 170 V
    • 175 V
    • 200 V
    • 250 V
    • 400 V
    • 500 V
Additional Features
    • LOW PROFILE
    • OTHER PULL-IN RANGES ARE ALSO AVAILABLE
    • STANDARD: CUL; EX; UL
    • STANDARD: CUL; UL
    • STANDARDS: ATEX; CUL; DEMKO; EX; UL
    • STANDARDS: ATEX; CUL; DEMKO; UL
    • STANDARDS: ATEX; CUL; UL
    • STANDARDS: CUL; UL
Maximum AC Contact Voltage
    • 100 V
    • 120 V
    • 140 V
    • 175 V
    • 200 V
    • 24 V
    • 240 V
    • 265 V
    • 280 V
    • 350 V
JESD-609 Code
    • e3
Reset All
Part RoHS Manufacturer Switch Type Mounting Feature Switch Function Maximum Pull In AC Maximum Rating R Load (Contact) Minimum Drop-out Value Minimum Pull In Electrical Life Packing Method Body Length/Diameter Body Width Sealing Body Height DC Maximum Rating R Load (Contact) Maximum Operating Temperature Maximum AC Contact Current Minimum Operating Temperature Nominal Resonant Frequency Terminal Finish Maximum DC Contact Current Termination Type Manufacturer Series Maximum DC Contact Voltage Additional Features Maximum AC Contact Voltage JESD-609 Code

MDRR-DT-15-30-U

Littelfuse

DRY REED SWITCH

THROUGH HOLE-STRAIGHT

CHANGE-OVER

30 AT

0.18A@120VAC

15 AT

BULK

2.54 mm

14.73 mm

0.25A@175VDC

125 Cel

.18 A

-40 Cel

11 kHz

.25 A

SOLDER

175 V

STANDARDS: CUL; UL

120 V

MDSM-DTR-20-25

Littelfuse

DRY REED SWITCH

SURFACE MOUNT-STRAIGHT

CHANGE-OVER

25 AT

.18A@120VAC

20 AT

14.73 mm

HERMETICALLY SEALED

2.54 mm

.25A@175VDC

125 Cel

.18 A

-40 Cel

11 kHz

.25 A

SOLDER

175 V

120 V

MDSM-DTB-15-20

Littelfuse

DRY REED SWITCH

SURFACE MOUNT-STRAIGHT

CHANGE-OVER

30 AT

.18A@120VAC

15 AT

2.54 mm

HERMETICALLY SEALED

14.73 mm

.25A@175VDC

125 Cel

.18 A

-40 Cel

11000 kHz

TIN

.25 A

SOLDER

MDSM-DT

175 V

120 V

e3

MDRR-DT-15-30-F

Littelfuse

DRY REED SWITCH

THROUGH HOLE-STRAIGHT

CHANGE-OVER

30 AT

0.18A@120VAC

15 AT

BULK

2.54 mm

14.73 mm

0.25A@175VDC

125 Cel

.18 A

-40 Cel

11 kHz

.25 A

SOLDER

175 V

STANDARDS: CUL; UL

120 V

MDRR-DT-10-15-F

Littelfuse

DRY REED SWITCH

THROUGH HOLE-STRAIGHT

CHANGE-OVER

15 AT

0.18A@120VAC

10 AT

BULK

2.54 mm

14.73 mm

0.25A@175VDC

125 Cel

.18 A

-40 Cel

11 kHz

.25 A

SOLDER

175 V

STANDARDS: CUL; UL

120 V

MDRR-DT-25-30-F

Littelfuse

DRY REED SWITCH

THROUGH HOLE-STRAIGHT

CHANGE-OVER

30 AT

0.18A@120VAC

25 AT

BULK

2.54 mm

14.73 mm

0.25A@175VDC

125 Cel

.18 A

-40 Cel

11 kHz

.25 A

SOLDER

175 V

STANDARDS: CUL; UL

120 V

MDSM-DTR-15-20

Littelfuse

DRY REED SWITCH

SURFACE MOUNT-STRAIGHT

CHANGE-OVER

30 AT

.18A@120VAC

15 AT

2.54 mm

HERMETICALLY SEALED

14.73 mm

.25A@175VDC

125 Cel

.18 A

-40 Cel

11000 kHz

TIN

.25 A

SOLDER

MDSM-DT

175 V

120 V

e3

MDRR-DT-15-25-F

Littelfuse

DRY REED SWITCH

THROUGH HOLE-STRAIGHT

CHANGE-OVER

25 AT

0.18A@120VAC

15 AT

BULK

2.54 mm

14.73 mm

0.25A@175VDC

125 Cel

.18 A

-40 Cel

11 kHz

Tin (Sn)

.25 A

SOLDER

175 V

STANDARDS: CUL; UL

120 V

e3

MDRR-DT-20-35-U

Littelfuse

DRY REED SWITCH

THROUGH HOLE-STRAIGHT

CHANGE-OVER

35 AT

0.18A@120VAC

20 AT

BULK

2.54 mm

14.73 mm

0.25A@175VDC

125 Cel

.18 A

-40 Cel

11 kHz

TIN

.25 A

SOLDER

175 V

STANDARDS: CUL; UL

120 V

e3

MDRR-DT-10-20-U

Littelfuse

DRY REED SWITCH

THROUGH HOLE-STRAIGHT

CHANGE-OVER

20 AT

0.18A@120VAC

10 AT

BULK

2.54 mm

14.73 mm

0.25A@175VDC

125 Cel

.18 A

-40 Cel

11 kHz

TIN

.25 A

SOLDER

175 V

STANDARDS: CUL; UL

120 V

e3

MDRR-DT-20-30-F

Littelfuse

DRY REED SWITCH

THROUGH HOLE-STRAIGHT

CHANGE-OVER

30 AT

0.18A@120VAC

20 AT

BULK

2.54 mm

14.73 mm

0.25A@175VDC

125 Cel

.18 A

-40 Cel

11 kHz

.25 A

SOLDER

175 V

STANDARDS: CUL; UL

120 V

MDRR-DT-15-20-F

Littelfuse

DRY REED SWITCH

THROUGH HOLE-STRAIGHT

CHANGE-OVER

20 AT

0.18A@120VAC

15 AT

BULK

2.54 mm

14.73 mm

0.25A@175VDC

125 Cel

.18 A

-40 Cel

11 kHz

.25 A

SOLDER

175 V

STANDARDS: CUL; UL

120 V

DRT-DTH-70-75

Littelfuse

DRY REED SWITCH

THROUGH HOLE-STRAIGHT

CHANGE-OVER

75 AT

1A@350VAC

70 AT

BULK

5.33 mm

HERMETICALLY SEALED

39.67 mm

1.5A@500VDC

125 Cel

1 A

-20 Cel

2.75 kHz

1.5 A

SOLDER

500 V

350 V

MDRR-DT-10-15-U

Littelfuse

DRY REED SWITCH

THROUGH HOLE-STRAIGHT

CHANGE-OVER

15 AT

0.18A@120VAC

10 AT

BULK

2.54 mm

14.73 mm

0.25A@175VDC

125 Cel

.18 A

-40 Cel

11 kHz

.25 A

SOLDER

175 V

STANDARDS: CUL; UL

120 V

DRT-DTH-70-80

Littelfuse

DRY REED SWITCH

THROUGH HOLE-STRAIGHT

CHANGE-OVER

80 AT

1A@350VAC

70 AT

BULK

5.33 mm

HERMETICALLY SEALED

39.67 mm

1.5A@500VDC

125 Cel

1 A

-20 Cel

2.75 kHz

1.5 A

SOLDER

500 V

350 V

DRT-DTH-50-60

Littelfuse

DRY REED SWITCH

THROUGH HOLE-STRAIGHT

CHANGE-OVER

60 AT

1A@350VAC

50 AT

BULK

5.33 mm

HERMETICALLY SEALED

39.67 mm

1.5A@500VDC

125 Cel

1 A

-20 Cel

2.75 kHz

1.5 A

SOLDER

500 V

350 V

DRT-DTH-75-80

Littelfuse

DRY REED SWITCH

THROUGH HOLE-STRAIGHT

CHANGE-OVER

80 AT

1A@350VAC

75 AT

BULK

5.33 mm

HERMETICALLY SEALED

39.67 mm

1.5A@500VDC

125 Cel

1 A

-20 Cel

2.75 kHz

1.5 A

SOLDER

500 V

350 V

MDRR-DT-20-30-U

Littelfuse

DRY REED SWITCH

THROUGH HOLE-STRAIGHT

CHANGE-OVER

30 AT

0.18A@120VAC

20 AT

BULK

2.54 mm

14.73 mm

0.25A@175VDC

125 Cel

.18 A

-40 Cel

11 kHz

.25 A

SOLDER

175 V

STANDARDS: CUL; UL

120 V

MDRR-DT-25-30-U

Littelfuse

DRY REED SWITCH

THROUGH HOLE-STRAIGHT

CHANGE-OVER

30 AT

0.18A@120VAC

25 AT

BULK

2.54 mm

14.73 mm

0.25A@175VDC

125 Cel

.18 A

-40 Cel

11 kHz

.25 A

SOLDER

175 V

STANDARDS: CUL; UL

120 V

MDRR-DT-20-25-U

Littelfuse

DRY REED SWITCH

THROUGH HOLE-STRAIGHT

CHANGE-OVER

25 AT

0.18A@120VAC

20 AT

BULK

2.54 mm

14.73 mm

0.25A@175VDC

125 Cel

.18 A

-40 Cel

11 kHz

.25 A

SOLDER

175 V

STANDARDS: CUL; UL

120 V

DRT-DTH-65-75

Littelfuse

DRY REED SWITCH

THROUGH HOLE-STRAIGHT

CHANGE-OVER

75 AT

1A@350VAC

65 AT

BULK

5.33 mm

HERMETICALLY SEALED

39.67 mm

1.5A@500VDC

125 Cel

1 A

-20 Cel

2.75 kHz

1.5 A

SOLDER

500 V

350 V

MDRR-DT-15-20-U

Littelfuse

DRY REED SWITCH

THROUGH HOLE-STRAIGHT

CHANGE-OVER

20 AT

0.18A@120VAC

15 AT

BULK

2.54 mm

14.73 mm

0.25A@175VDC

125 Cel

.18 A

-40 Cel

11 kHz

.25 A

SOLDER

175 V

STANDARDS: CUL; UL

120 V

MDRR-DT-15-25-U

Littelfuse

DRY REED SWITCH

THROUGH HOLE-STRAIGHT

CHANGE-OVER

25 AT

0.18A@120VAC

15 AT

BULK

2.54 mm

14.73 mm

0.25A@175VDC

125 Cel

.18 A

-40 Cel

11 kHz

.25 A

SOLDER

175 V

STANDARDS: CUL; UL

120 V

DRT-DTH-50-80

Littelfuse

DRY REED SWITCH

THROUGH HOLE-STRAIGHT

CHANGE-OVER

80 AT

1A@350VAC

50 AT

BULK

5.33 mm

HERMETICALLY SEALED

39.67 mm

1.5A@500VDC

125 Cel

1 A

-20 Cel

2.75 kHz

1.5 A

SOLDER

500 V

350 V

MDRR-DT-20-35-F

Littelfuse

DRY REED SWITCH

THROUGH HOLE-STRAIGHT

CHANGE-OVER

35 AT

0.18A@120VAC

20 AT

BULK

2.54 mm

14.73 mm

0.25A@175VDC

125 Cel

.18 A

-40 Cel

11 kHz

.25 A

SOLDER

175 V

STANDARDS: CUL; UL

120 V

DRT-DTH-50-65

Littelfuse

DRY REED SWITCH

THROUGH HOLE-STRAIGHT

CHANGE-OVER

65 AT

1A@350VAC

50 AT

BULK

5.33 mm

HERMETICALLY SEALED

39.67 mm

1.5A@500VDC

125 Cel

1 A

-20 Cel

2.75 kHz

1.5 A

SOLDER

500 V

350 V

MDRR-DT-20-25-F

Littelfuse

DRY REED SWITCH

THROUGH HOLE-STRAIGHT

CHANGE-OVER

25 AT

0.18A@120VAC

20 AT

BULK

2.54 mm

14.73 mm

0.25A@175VDC

125 Cel

.18 A

-40 Cel

11 kHz

.25 A

SOLDER

175 V

STANDARDS: CUL; UL

120 V

MDRR-DT-10-20-F

Littelfuse

DRY REED SWITCH

THROUGH HOLE-STRAIGHT

CHANGE-OVER

20 AT

0.18A@120VAC

10 AT

BULK

2.54 mm

14.73 mm

0.25A@175VDC

125 Cel

.18 A

-40 Cel

11 kHz

.25 A

SOLDER

175 V

STANDARDS: CUL; UL

120 V

MDRR-DT-25-35-U

Littelfuse

DRY REED SWITCH

THROUGH HOLE-STRAIGHT

CHANGE-OVER

35 AT

0.18A@120VAC

25 AT

BULK

2.54 mm

14.73 mm

0.25A@175VDC

125 Cel

.18 A

-40 Cel

11 kHz

.25 A

SOLDER

175 V

STANDARDS: CUL; UL

120 V

MDRR-DT-25-35-F

Littelfuse

DRY REED SWITCH

THROUGH HOLE-STRAIGHT

CHANGE-OVER

35 AT

0.18A@120VAC

25 AT

BULK

2.54 mm

14.73 mm

0.25A@175VDC

125 Cel

.18 A

-40 Cel

11 kHz

.25 A

SOLDER

175 V

STANDARDS: CUL; UL

120 V

MDSM-DTR-25-30

Littelfuse

DRY REED SWITCH

SURFACE MOUNT-STRAIGHT

CHANGE-OVER

30 AT

.18A@120VAC

25 AT

14.73 mm

HERMETICALLY SEALED

2.54 mm

.25A@175VDC

125 Cel

.18 A

-40 Cel

11 kHz

.25 A

SOLDER

175 V

120 V

Magnetic Reed Switches

Magnetic reed switches are electrical switches that use a magnet to activate a pair of reed switches, which are thin, ferromagnetic metal blades that are hermetically sealed in a glass envelope. They are commonly used in a variety of applications, such as security systems, automotive electronics, and medical devices.

Magnetic reed switches consist of two reed switches that are positioned in close proximity to each other. When a magnetic field is applied to the switch, the reed switches attract each other, completing the electrical circuit. When the magnetic field is removed, the reed switches return to their original position, breaking the circuit.

Magnetic reed switches offer several advantages over other types of switches. They are highly reliable and have a long operational life, as they have no moving parts that can wear out or break down over time. They are also easy to install and operate, and they can be used in a wide range of applications.