MRPR-20 Series Datasheet by Littelfuse Inc.

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littelfuse.com© 2016 Littelfuse Revised: 04/26/16
Specifications are subject to change without notice.
MRPR-20 20.3mm Miniature High Voltage and High Power Reed Switch
Description
The MRPR-20 Reed Switch is a miniature, normally open switch with a 20.32mm
long x 2.84mm diameter (0.800” x 0.112”) glass envelope, capable of high
voltage and power switching of 265Vac at 50VA. The MRPR-20 has high
insulation resistance of 1010 ohms minimum and contact resistance less than
100 milli-ohms.
Agency Approvals
Agency Agency File Number Ampere-Turns
Range
E47258 17-43 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
• Capable of switching 265Vac or
1.5A at up to 50W/VA
Minimum breakdown voltage
750Vdc
Available sensitivity range
17-43 AT
Benefits
• Hermetically sealed switch
contacts are not affected by and
have no effect on their external
environment
• Zero operating power required
for contact
• High voltage and power switching
with a miniature switch
Applications
• Reed relays (suitable for switching
global mains voltage)
• Limit switching
Telecom line switching
Heavy Load Switching
Dimensions
Dimensions in mm (inch)
High Power > MRPR-20
RoHS
Note: SPST-NO = Single-pole, single-throw, normally open
Electrical Ratings
Contact Rating 1W/VA - max. 50
Voltage 3
Switching 2
Breakdown 4
Vdc - max.
Vac - max.
Vdc - min.
250
265
750
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
1010
Capacitance Contact pF - typ. 0.2
Temperature Operating
Storage 5
°C
°C
-20 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.
18.16
(.715) MAX.
20.32
(.800) MAX.
56.64
(2.230) NOM.
2.84
(.112) MAX.
0.63
(.025) DIA. REF.
Note: Contact Littelfuse for specific agency approval ratings.
MRPR-ZO - 17-28 a...“ alumna]
littelfuse.com© 2016 Littelfuse Revised: 04/26/16
Specifications are subject to change without notice.
Drop-Out vs. Pull-In Chart
Packaging
Packaging Option Packaging Specification Quantity Quantity & Packaging Code Taping Width
Bulk Bulk 1000 N/A N/A
Product Characteristics
Operating Characteristics
Operate Time 10.75ms - max.
Release Time 10.3ms - max.
Shock 211ms 1∕2 sine wave 100G - max.
Vibration 250-2000 Hertz 30G - max.
Resonant Frequency 2.1kHz - typ.
Part Numbering System
Notes:
1. Operate (including bounce)/Release Time - per EIA/NARM RS-421-A,diode suppressed coil (Coil II).
2. Shock and Vibration - per EIA/NARM RS-421-A and MIL-STD-202.
3. Pull-In Range - Contact Littelfuse for narrower AT ranges available.
4. Rating Sensitivity - The value at which contact ratings and operating characteristics are determined. Derating may be required below this value.
5. Custom modifications of forming and/or cutting of reed switches are available. Please contact Littelfuse.
Axial Lead Reed Switches
High Power > MRPR-20
MRPR-20 20.3mm Miniature High Voltage and High Power Reed Switch
MRPR-20 - 17-28
Series
AT Range
17-43 AT
17-23 AT
17-28 AT
22-33 AT
27-33 AT
27-38 AT
32-38 AT
32-43 AT
37-43 AT
Example:
17-28 AT product is
MRPR-20-17-28
Note: Chart represents the range of Drop-Out, min to max for a given Pull-In value. Note: These AT values are the before-modification values of the bare reed switch.
Magnetic Characteristics
Pull-In Range 3Ampere Turns 17-43
Rating Sensitivity 4Ampere Turns 22
Test Coil L4989
0
0510 15 20 25
Pull-In (AT, L4989 Coil)
Drop-Out (AT, L4989 Coil)
30 35 40 45
Max.
Min.
50
5
10
15
20
25
30
35
40

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