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Specifications are subject to change without notice.
MRPR-3 19.7mm Miniature Reed Switch
Description
The MRPR-3 Reed Switch is a miniature, normally open switch with a 19.69mm
long x 2.84mm diameter (0.770” x .112”) glass envelope, capable of switching up
to 200Vdc at 50W. The MRPR-3 has high insulation resistance of 10
10
ohms
minimum and contact resistance less than 100 milli-ohms.
Agency Approvals
Agency Agency File Number Ampere-Turns Range
E47258
E471070
22-43 AT
DEMKO 14 ATEX 1393U 22-43 AT
Switch Type
Contact Form A (SPST-NO)
Materials
Body: Glass
Leads: Tin-plated Ni-Fe wire
Axial Lead Reed Switches
Features
• Miniature normally open switch
• Switch contacts capable of
switching 200Vdc or 1.5A at
up to 50W.
• Available sensitivity range
22-43 AT
Benefits
• Hermetically sealed switch
contacts are not affected by and
have no effect on their external
environment
• Zero operating power required
for contact
• Power switching with a
miniature switch
Applications
• Limit Switching
• Telephone Line Switching
• Office Equipments
• Heavy Load Switching
• Light Inductive Loads
Dimensions
Dimensions in mm (inch)
Low Power > MRPR-3
RoHS
Note: SPST-NO = Single-pole, single-throw, normally open
Electrical Ratings
Contact Rating
1
W/VA - max. 50
Voltage
3
Switching
2
Breakdown
4
Vdc - max.
Vac - max.
Vdc - min.
200
140
300
Current
3
Switching
2
Carry
Adc - max.
Aac - max.
Adc - max.
1.5
1.1
3.0
Resistance
Contact, Initial
Insulation
Ω - max.
Ω - min.
0.100
10
10
Capacitance Contact pF - typ. 0.2
Temperature
Operating
Storage
5
°C
°C
-40 to +125
-65 to +125
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.
13.16
(.715) MAX.
19.69
(.775) MAX.
56.64
2.84
(.112) MAX.
(.025) DIA. REF.
