Littelfuse Magnetic Reed Switches 234

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Part	Manufacturer	Switch Type	Mounting Feature	Switch Function	Maximum Pull In	AC Maximum Rating R Load (Contact)	Minimum Pull In	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
MDSM-4R-12-18	Littelfuse	DRY REED SWITCH	SURFACE MOUNT-STRAIGHT	SPST	18 AT	.35A@140VAC	12 AT		2.28 mm		HERMETICALLY SEALED	15.24 mm	.5A@200VDC	125 Cel	.35 A	-40 Cel	3.9 kHz		.5 A	SOLDER		200 V		140 V
MDCG-4-17-23	Littelfuse	DRY REED SWITCH	THROUGH HOLE-STRAIGHT	SPST	38 AT	.35A@140VAC	12 AT		2.28 mm			15.24 mm	.5A@200VDC	125 Cel	.35 A	-40 Cel	3.9 kHz	TIN	.5 A	SOLDER		200 V		140 V	e3
59165-1-S-00-A	Littelfuse	DRY REED SWITCH
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
DRS-DTH-50-80	Littelfuse	DRY REED SWITCH	THROUGH HOLE-STRAIGHT	SPDT	80 AT	0.35A@350VAC	50 AT	BULK	5.54 mm		HERMETICALLY SEALED	39.67 mm	0.5A@500VDC	125 Cel	.35 A	-20 Cel	2.75 kHz		.5 A	SOLDER		500 V		350 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
DRS-50-42-83	Littelfuse	DRY REED SWITCH	THROUGH HOLE-STRAIGHT	SPST	83 AT	2.1A@280VAC	42 AT	BULK	5.25 mm		HERMETICALLY SEALED	50.8 mm	3A@400VDC	125 Cel	2.1 A	-40 Cel	.85 kHz	Tin (Sn)	3 A	SOLDER		400 V		280 V	e3
59045-1-S-00-0	Littelfuse	DRY REED SWITCH	THROUGH HOLE-STRAIGHT	SPST	20 AT	.35@140VAC	15 AT	BOX; BULK	17.78 mm	3.3 inch	HERMETICALLY SEALED	4.32 mm	.5A@200VDC	105 Cel	.35 A	-40 Cel			.5 A	SOLDER		200 V		140 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
59045-1-T-00-0	Littelfuse	DRY REED SWITCH	THROUGH HOLE-STRAIGHT	SPST	25 AT	.35@140VAC	20 AT	BOX; BULK	17.78 mm	3.3 inch	HERMETICALLY SEALED	4.32 mm	.5A@200VDC	105 Cel	.35 A	-40 Cel			.5 A	SOLDER		200 V		140 V
MDSM-10R-20-25	Littelfuse	DRY REED SWITCH	SURFACE MOUNT-STRAIGHT	SPST	25 AT	.35A@140VAC	20 AT	TR, 13 INCH	1.8 mm		HERMETICALLY SEALED	10.16 mm	.5A@200VDC	125 Cel	.35 A	-40 Cel	6.5 kHz	TIN	.5 A	SOLDER		200 V		140 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
MITI-76-10	Littelfuse	DRY REED SWITCH	SURFACE MOUNT-STRAIGHT	SPST	10 AT	.18A@120VAC	6 AT	BULK	1.8 mm		HERMETICALLY SEALED	7 mm	0.25A@170VDC	125 Cel	.18 A	-40 Cel	14 kHz		.25 A	SOLDER		170 V	STANDARD: CUL; UL	120 V
MDSR-4-12-23	Littelfuse	DRY REED SWITCH	THROUGH HOLE-STRAIGHT	SPST	23 AT		12 AT		2.28 mm			15.24 mm	.5A@200VDC	125 Cel		-40 Cel	3.9 kHz		.5 A	SOLDER		200 V
59165-1-T-00-D	Littelfuse	DRY REED SWITCH
MDSM-10R-10-15	Littelfuse	DRY REED SWITCH	SURFACE MOUNT-STRAIGHT	SPST	15 AT	.35A@140VAC	10 AT	TR, 13 INCH	1.8 mm		HERMETICALLY SEALED	10.16 mm	.5A@200VDC	125 Cel	.35 A	-40 Cel	6.5 kHz		.5 A	SOLDER		200 V		140 V
MISM-7R6-10	Littelfuse	DRY REED SWITCH	SURFACE MOUNT-STRAIGHT	SPST	10 AT	.18A@120VAC	6 AT	TR, 13 INCH	1.8 mm		HERMETICALLY SEALED	7 mm	0.25A@170VDC	125 Cel	.18 A	-40 Cel	14 kHz	Tin (Sn)	.25 A	SOLDER		170 V		120 V	e3
MDCG-4-12-33	Littelfuse	DRY REED SWITCH	THROUGH HOLE-STRAIGHT	SPST	33 AT	.35@140VAC	12 AT	BULK	2.28 mm		HERMETICALLY SEALED	15.24 mm	.5A@200VDC	125 Cel	.35 A	-40 Cel	3.9 kHz		.5 A	SOLDER		200 V	STANDARD: CUL; UL	140 V
MDSR-7-10-25	Littelfuse	DRY REED SWITCH	THROUGH HOLE-STRAIGHT	SPST	25 AT	.35A@140VAC	10 AT		1.8 mm		HERMETICALLY SEALED	12.7 mm	.5A@200VDC	125 Cel	.35 A	-40 Cel	5.5 kHz	TIN	.5 A	SOLDER		200 V		140 V	e3
MISM-7R15-20	Littelfuse	DRY REED SWITCH	SURFACE MOUNT-STRAIGHT	SPST	20 AT	.18A@120VAC	15 AT	TR, 13 INCH	1.8 mm		HERMETICALLY SEALED	7 mm	0.25A@170VDC	125 Cel	.18 A	-40 Cel	14 kHz		.25 A	SOLDER		170 V		120 V
59165-1-S-00-D	Littelfuse	DRY REED SWITCH	SURFACE MOUNT-STRAIGHT	SPST	15 AT	.35A@140VAC	10 AT	TR	16 mm	2.4 inch	HERMETICALLY SEALED	2.51 mm	.5A@200VDC	105 Cel	.35 A	-40 Cel			.5 A	SOLDER		200 V	STANDARDS: ATEX; CUL; DEMKO; EX; UL	140 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-10B-20-25	Littelfuse	DRY REED SWITCH	SURFACE MOUNT-STRAIGHT	SPST	25 AT	.35A@140VAC	20 AT	BULK	1.8 mm		HERMETICALLY SEALED	10.16 mm	.5A@200VDC	125 Cel	.35 A	-40 Cel	6.5 kHz		.5 A	SOLDER		200 V		140 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
MARR-5-17-28AT	Littelfuse	DRY REED SWITCH																			MARR-5
MDSR-7	Littelfuse	DRY REED SWITCH	THROUGH HOLE-STRAIGHT	SPST	25 AT		10 AT		1.8 mm		HERMETICALLY SEALED	12.7 mm	.5A@200VDC	125 Cel		-40 Cel	5.5 kHz	Tin (Sn)	.5 A	SOLDER	MDSR-7	200 V			e3
MDSR-10-10-25	Littelfuse	DRY REED SWITCH
MLRR-4-17-23	Littelfuse	DRY REED SWITCH	THROUGH HOLE-STRAIGHT	SPST	23 AT	.7A@140VAC	17 AT	BULK	2.66 mm		HERMETICALLY SEALED	15.24 mm	1A@200VDC	125 Cel	.7 A	-40 Cel	6.25 kHz	TIN	1 A	SOLDER		200 V		140 V	e3
MARR-5-17-23	Littelfuse	DRY REED SWITCH																Tin (Sn)							e3
DRR-129-42-53	Littelfuse	DRY REED SWITCH																Tin (Sn)							e3
DRR-129-62-68	Littelfuse	DRY REED SWITCH																Tin (Sn)							e3
DRR-129-67-83AT	Littelfuse	DRY REED SWITCH																			DRR-129
MLRR-3	Littelfuse	DRY REED SWITCH	THROUGH HOLE-STRAIGHT	SPST	38 AT		17 AT		2.66 mm		HERMETICALLY SEALED	15.24 mm	1A@200VDC	125 Cel		-40 Cel	6.25 kHz		1 A	SOLDER	MLRR-3	200 V
MLSM-3B17-23	Littelfuse	DRY REED SWITCH	SURFACE MOUNT-STRAIGHT	SPST	23 AT	.7A@140VAC	17 AT	BULK	15.24 mm		HERMETICALLY SEALED	3 mm	1A@200VDC	125 Cel	.7 A	-40 Cel	6 kHz	Tin (Sn)	1 A	SOLDER		200 V		140 V	e3
59165-1-U-00-B	Littelfuse	DRY REED SWITCH
MDSR-10-10-15AT	Littelfuse	DRY REED SWITCH																			MDSR-10
DRR-129-42-48	Littelfuse	DRY REED SWITCH
MASM-14	Littelfuse	DRY REED SWITCH																			MASM-14
MDSR-7-15-20AT	Littelfuse	DRY REED SWITCH												125 Cel		-40 Cel
MARR-5-32-38AT	Littelfuse	DRY REED SWITCH																			MARR-5
MLSM-4R-17-23	Littelfuse	DRY REED SWITCH	SURFACE MOUNT-STRAIGHT	SPST	23 AT	.7A@140VAC	17 AT	TR, 13 INCH	2.66 mm		HERMETICALLY SEALED	15.24 mm	1A@200VDC	125 Cel	.7 A	-40 Cel	6 kHz		1 A	SOLDER		200 V	STANDARDS: ATEX; CUL; UL	140 V
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
MLSM-3R17-23	Littelfuse	DRY REED SWITCH	SURFACE MOUNT-STRAIGHT	SPST	23 AT	.7A@140VAC	17 AT	TR	15.24 mm		HERMETICALLY SEALED	3 mm	1A@200VDC	125 Cel	.7 A	-40 Cel	6 kHz	Tin (Sn)	1 A	SOLDER		200 V		140 V	e3
DRR-129-42-53AT	Littelfuse	DRY REED SWITCH																			DRR-129
MLSM-4	Littelfuse	DRY REED SWITCH	SURFACE MOUNT-STRAIGHT	SPST	38 AT		17 AT		2.66 mm		HERMETICALLY SEALED	15.24 mm	1A@200VDC	125 Cel		-40 Cel	6 kHz		1 A	SOLDER	MLSM-4	200 V	OTHER PULL-IN RANGES ARE ALSO AVAILABLE
59165-1-U-00-D	Littelfuse	DRY REED SWITCH
MARR-5-22-33AT	Littelfuse	DRY REED SWITCH																			MARR-5

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.