Axial Lead Reed Switches
Low Power > MRPR-3
MRPR-3 19.7mm Miniature Reed Switch
OBSOLETE:
Date: April 28, 2016
RoHS
Replacement Series: MRPR-20 Series
PCN#: (Sorry i can;t recall this already)
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 1010 ohms
minimum and contact resistance less than 100 milli-ohms.
Features
• Miniature normally open switch
• Switch contacts capable of
switching 200Vdc or 1.5A at
up to 50W.
• Available sensitivity range
22-43 AT
Agency Approvals
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
Agency
Agency File Number
Ampere-Turns Range
E47258
E471070
22-43 AT
22-43 AT
Applications
DEMKO 14 ATEX 1393U
• Limit Switching
• Telephone Line Switching
• Office Equipments
• Heavy Load Switching
• Light Inductive Loads
Dimensions
Dimensions in mm (inch)
0.63
(.025) DIA. REF.
Switch Type
CL OF OVERLAP
28.32
(1.115) REF.
Contact Form
A (SPST-NO)
2.84
(.112) MAX.
Body: Glass
Leads: Tin-plated Ni-Fe wire
Materials
Note: SPST-NO = Single-pole, single-throw, normally open
13.16
19.69
(.715) MAX.
(.775) MAX.
56.64
(2.230) NOM.
Electrical Ratings
Contact Rating 1
W/VA - max.
50
Switching 2
Vdc - max.
Vac - max.
Vdc - min.
200
140
300
Voltage 3
Current 3
Breakdown 4
Switching 2
Adc - max.
Aac - max.
Adc - max.
1.5
1.1
3.0
Carry
Contact, Initial
Insulation
Ω - max.
Ω - min.
0.100
1010
Resistance
Capacitance
Temperature
Contact
pF - typ.
0.2
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
© 2015 Littelfuse
littelfuse.com
Specifications are subject to change without notice.