Magnetic Reed Switches

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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	Maximum DC Contact Current	Termination Type	Maximum DC Contact Voltage	Additional Features	Maximum AC Contact Voltage
59166-1-T-00-C	Littelfuse	DRY REED SWITCH	SURFACE MOUNT-STRAIGHT	SPST	20 AT	.35A@140VAC	15 AT	BULK	16 mm	2.4 inch	HERMETICALLY SEALED	2.51 mm	.5A@200VDC	105 Cel	.35 A	-40 Cel		.5 A	SOLDER	200 V		140 V
MVSR-20-32-38	Littelfuse	DRY REED SWITCH	THROUGH HOLE-STRAIGHT	SPST	38 AT	.35A@265VAC	32 AT	BULK	2.66 mm		HERMETICALLY SEALED	19.69 mm	.5A@1000VDC	125 Cel	.35 A	-75 Cel	3.2 kHz	.5 A	SOLDER	1000 V	STANDARDS: CUL; UL	265 V
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
MLRR-4-32-38	Littelfuse	DRY REED SWITCH	THROUGH HOLE-STRAIGHT	SPST	38 AT	.7A@140VAC	32 AT	BULK	2.66 mm		HERMETICALLY SEALED	15.24 mm	1A@200VDC	125 Cel	.7 A	-40 Cel	6.25 kHz	1 A	SOLDER	200 V		140 V
MVSR-20-27-38	Littelfuse	DRY REED SWITCH	THROUGH HOLE-STRAIGHT	SPST	38 AT	.35A@265VAC	27 AT	BULK	2.66 mm		HERMETICALLY SEALED	19.69 mm	.5A@1000VDC	125 Cel	.35 A	-75 Cel	3.2 kHz	.5 A	SOLDER	1000 V	STANDARDS: CUL; UL	265 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
MLRR-4-22-33	Littelfuse	DRY REED SWITCH	THROUGH HOLE-STRAIGHT	SPST	33 AT	.7A@140VAC	22 AT	BULK	2.66 mm		HERMETICALLY SEALED	15.24 mm	1A@200VDC	125 Cel	.7 A	-40 Cel	6.25 kHz	1 A	SOLDER	200 V		140 V
MVSR-20-17-28	Littelfuse	DRY REED SWITCH	THROUGH HOLE-STRAIGHT	SPST	28 AT	.35A@265VAC	17 AT	BULK	2.66 mm		HERMETICALLY SEALED	19.69 mm	.5A@1000VDC	125 Cel	.35 A	-75 Cel	3.2 kHz	.5 A	SOLDER	1000 V	STANDARDS: CUL; UL	265 V
59166-1-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		140 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
MLSM-3B22-28	Littelfuse	DRY REED SWITCH	SURFACE MOUNT-STRAIGHT	SPST	28 AT	.7A@140VAC	22 AT	BULK	15.24 mm		HERMETICALLY SEALED	3 mm	1A@200VDC	125 Cel	.7 A	-40 Cel	6 kHz	1 A	SOLDER	200 V		140 V
MLRR-4-27-38	Littelfuse	DRY REED SWITCH	THROUGH HOLE-STRAIGHT	SPST	38 AT	.7A@140VAC	27 AT	BULK	2.66 mm		HERMETICALLY SEALED	15.24 mm	1A@200VDC	125 Cel	.7 A	-40 Cel	6.25 kHz	1 A	SOLDER	200 V		140 V
MLSM-3B27-33	Littelfuse	DRY REED SWITCH	SURFACE MOUNT-STRAIGHT	SPST	33 AT	.7A@140VAC	27 AT	BULK	15.24 mm		HERMETICALLY SEALED	3 mm	1A@200VDC	125 Cel	.7 A	-40 Cel	6 kHz	1 A	SOLDER	200 V		140 V
MLSM-3B22-33	Littelfuse	DRY REED SWITCH	SURFACE MOUNT-STRAIGHT	SPST	33 AT	.7A@140VAC	22 AT	BULK	15.24 mm		HERMETICALLY SEALED	3 mm	1A@200VDC	125 Cel	.7 A	-40 Cel	6 kHz	1 A	SOLDER	200 V		140 V
MVSR-20-27-33	Littelfuse	DRY REED SWITCH	THROUGH HOLE-STRAIGHT	SPST	33 AT	.35A@265VAC	27 AT	BULK	2.66 mm		HERMETICALLY SEALED	19.69 mm	.5A@1000VDC	125 Cel	.35 A	-75 Cel	3.2 kHz	.5 A	SOLDER	1000 V	STANDARDS: CUL; UL	265 V
MLSM-3R32-38	Littelfuse	DRY REED SWITCH	SURFACE MOUNT-STRAIGHT	SPST	38 AT	.7A@140VAC	32 AT	TR	15.24 mm		HERMETICALLY SEALED	3 mm	1A@200VDC	125 Cel	.7 A	-40 Cel	6 kHz	1 A	SOLDER	200 V		140 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
MLRR-4-27-33	Littelfuse	DRY REED SWITCH	THROUGH HOLE-STRAIGHT	SPST	33 AT	.7A@140VAC	27 AT	BULK	2.66 mm		HERMETICALLY SEALED	15.24 mm	1A@200VDC	125 Cel	.7 A	-40 Cel	6.25 kHz	1 A	SOLDER	200 V		140 V
MLSM-3R17-28	Littelfuse	DRY REED SWITCH	SURFACE MOUNT-STRAIGHT	SPST	28 AT	.7A@140VAC	17 AT	TR	15.24 mm		HERMETICALLY SEALED	3 mm	1A@200VDC	125 Cel	.7 A	-40 Cel	6 kHz	1 A	SOLDER	200 V		140 V
MLRR-4-17-28	Littelfuse	DRY REED SWITCH	THROUGH HOLE-STRAIGHT	SPST	28 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	1 A	SOLDER	200 V		140 V
MLSM-3R22-28	Littelfuse	DRY REED SWITCH	SURFACE MOUNT-STRAIGHT	SPST	28 AT	.7A@140VAC	22 AT	TR	15.24 mm		HERMETICALLY SEALED	3 mm	1A@200VDC	125 Cel	.7 A	-40 Cel	6 kHz	1 A	SOLDER	200 V		140 V
MLRR-4-22-28	Littelfuse	DRY REED SWITCH	THROUGH HOLE-STRAIGHT	SPST	28 AT	.7A@140VAC	22 AT	BULK	2.66 mm		HERMETICALLY SEALED	15.24 mm	1A@200VDC	125 Cel	.7 A	-40 Cel	6.25 kHz	1 A	SOLDER	200 V		140 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
59166-1-S-00-C	Littelfuse	DRY REED SWITCH	SURFACE MOUNT-STRAIGHT	SPST	15 AT	.35A@140VAC	10 AT	BULK	16 mm	2.4 inch	HERMETICALLY SEALED	2.51 mm	.5A@200VDC	105 Cel	.35 A	-40 Cel		.5 A	SOLDER	200 V		140 V
MVSR-20-22-33	Littelfuse	DRY REED SWITCH	THROUGH HOLE-STRAIGHT	SPST	33 AT	.35A@265VAC	22 AT	BULK	2.66 mm		HERMETICALLY SEALED	19.69 mm	.5A@1000VDC	125 Cel	.35 A	-75 Cel	3.2 kHz	.5 A	SOLDER	1000 V	STANDARDS: CUL; UL	265 V
59166-1-T-00-D	Littelfuse	DRY REED SWITCH	SURFACE MOUNT-STRAIGHT	SPST	20 AT	.35A@140VAC	15 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		140 V
MLSM-3B27-38	Littelfuse	DRY REED SWITCH	SURFACE MOUNT-STRAIGHT	SPST	38 AT	.7A@140VAC	27 AT	BULK	15.24 mm		HERMETICALLY SEALED	3 mm	1A@200VDC	125 Cel	.7 A	-40 Cel	6 kHz	1 A	SOLDER	200 V		140 V
59166-1-U-00-C	Littelfuse	DRY REED SWITCH	SURFACE MOUNT-STRAIGHT	SPST	25 AT	.35A@140VAC	20 AT	BULK	16 mm	2.4 inch	HERMETICALLY SEALED	2.51 mm	.5A@200VDC	105 Cel	.35 A	-40 Cel		.5 A	SOLDER	200 V		140 V
MLSM-3R27-38	Littelfuse	DRY REED SWITCH	SURFACE MOUNT-STRAIGHT	SPST	38 AT	.7A@140VAC	27 AT	TR	15.24 mm		HERMETICALLY SEALED	3 mm	1A@200VDC	125 Cel	.7 A	-40 Cel	6 kHz	1 A	SOLDER	200 V		140 V
MVSR-20-22-28	Littelfuse	DRY REED SWITCH	THROUGH HOLE-STRAIGHT	SPST	28 AT	.35A@265VAC	22 AT	BULK	2.66 mm		HERMETICALLY SEALED	19.69 mm	.5A@1000VDC	125 Cel	.35 A	-75 Cel	3.2 kHz	.5 A	SOLDER	1000 V	STANDARDS: CUL; UL	265 V
MVSR-20-17-23	Littelfuse	DRY REED SWITCH	THROUGH HOLE-STRAIGHT	SPST	23 AT	.35A@265VAC	17 AT	BULK	2.66 mm		HERMETICALLY SEALED	19.69 mm	.5A@1000VDC	125 Cel	.35 A	-75 Cel	3.2 kHz	.5 A	SOLDER	1000 V	STANDARDS: CUL; UL	265 V
MLSM-3R27-33	Littelfuse	DRY REED SWITCH	SURFACE MOUNT-STRAIGHT	SPST	33 AT	.7A@140VAC	27 AT	TR	15.24 mm		HERMETICALLY SEALED	3 mm	1A@200VDC	125 Cel	.7 A	-40 Cel	6 kHz	1 A	SOLDER	200 V		140 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
MLSM-3R22-33	Littelfuse	DRY REED SWITCH	SURFACE MOUNT-STRAIGHT	SPST	33 AT	.7A@140VAC	22 AT	TR	15.24 mm		HERMETICALLY SEALED	3 mm	1A@200VDC	125 Cel	.7 A	-40 Cel	6 kHz	1 A	SOLDER	200 V		140 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
MLSM-3B17-28	Littelfuse	DRY REED SWITCH	SURFACE MOUNT-STRAIGHT	SPST	28 AT	.7A@140VAC	17 AT	BULK	15.24 mm		HERMETICALLY SEALED	3 mm	1A@200VDC	125 Cel	.7 A	-40 Cel	6 kHz	1 A	SOLDER	200 V		140 V
59050-3-T-00-0	Littelfuse	DRY REED SWITCH

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.