MRPR-20 LITTELFUSE | Alldatasheet

Document overview

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Technical content

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 SwitchingDimensions Dimensions in mm (inch) High Power > MRPR-20 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. 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 -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.

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 1 0.75ms - max. Release Time 1 0.3ms - max. Shock 2 11ms 1∕2 sine wave 100G - max. Vibration 2 50-2000 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 3 Ampere Turns 17-43 Rating Sensitivity 4 Ampere Turns 22 Test Coil L4989 05 10 15 20 25 Pull-In (AT, L4989 Coil) Drop-Out (AT, L4989 Coil) 30 35 40 45 Max. Min.