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Specifications are subject to change without notice.
MLRR-3 15.2mm Miniature Close Differential Reed Switch
Description
The MLRR-3 Reed Switch is a miniature, normally open switch with a 15.24mm
long x 2.54mm diameter (0.600” x 0.100”) glass envelope, capable of switching
200Vdc at 20W with close differential (CD) characteristics. It has high insulation
resistance of 10
10
ohms minimum and contact resistance less than
100 milli-ohms.
This reed switch is also available in a surface mount version, that is, MLSM-3.
It can handle light inductive loads.
Agency Approvals
Agency Agency File Number Ampere-Turns Range
E47258
E471070
17-38 AT
DEMKO 14 ATEX 1393U 17-38 AT
Switch Type
Contact Form A (SPST-NO)
Materials
Body: Glass
Leads: Tin Plated Nickel Iron
Axial Lead Reed Switches
Features
• Miniature normally open switch
• Capable of switching 200Vdc or
01.0A at up to 20W.
• Available sensitivity range 17-38 AT
• Close differential AT between PI
and DO value
• Maximum switched current of
1.0Amps
Benefits
• Hermetically sealed switch contacts
are not affected by and have no
effect on their external environment
• Zero operating power required for
contact closure
Applications
• Security
• Limit Switching
• Office Equipments
• Light Inductive Loads
Dimensions
Dimensions in mm
Electrical Ratings
Contact Rating
1
Watt - max. 20
Voltage
3
Switching
2
Breakdown
4
Vdc - max.
Vac - max.
Vdc - min.
200
140
250
Current
3
Switching
2
Carry
Adc - max.
Aac - max.
Adc - max.
1.0
0.7
1.2
Resistance
Contact, Initial
Insulation
Ω - max.
Ω - min.
0.100
10
10
Capacitance Contact pF - typ. 0.4
Temperature
Operating
Storage
5
°C
°C
-40 to +125
-65 to +125
High Power > MLRR-3
RoHS
Note: SPST-NO = Single-pole, single-throw, normally open
Notes:
1. Contact rating - Product of the switching voltage and current should never exceed the wattage rating. Contact Littelfuse for additional load/life information.
2. When switching inductive and/or capacitive loads, the effects of transient voltages and/or currents should be considered. Refer to Application Notes AN108A and AN107 for details.
3. Electrical Load Life Expectancy - Contact Littelfuse with voltage, current values along with type of load.
4. Breakdown Voltage - per MIL-STD-202, Method 301.
5. Storage Temperature - Long time exposure at elevated temperature may degrade solderability of the leads.
CL OF OVERLAP
28.32
(1.115) REF.
20.19
(.795) MIN.
15.24
(.600) MAX.
56.64
2.66
(.105) MAX.
0.61
