Axial Lead Reed Switches High Voltage > MVSR-20 RoHS MVSR-20 19.7mm Reed Switch Description The MVSR-20 reed switch is a miniature, normally open switch with a 19.69mm long x 2.66mm diameter (0.775 x 0.105) glass envelope, capable of high voltage switching of up to 1kVdc at 1mA. It has high insulation resistance of 10 ohms minimum and contact resistance less than 100 milli-ohms. Features Miniature normally open Minimum voltage breakdown switch 2000 Vdc Capable of switching Available sensitivity range 1000Vdc at 17-38 AT 1mA or 0.5A up to 10W Agency Approvals Benefits Hermetically sealed switch Zero operating power required Agency Agency File Number Ampere-Turns Range contacts are not affected by for contact closure E67006 0.125A - 4A and have no effect on their external environment Note: Contact Littelfuse for specific agency approval ratings. Dimensions Applications Dimensions in mm (inch) Reed relays (particularly Limit switching suitable for high voltage CLOFOVERLAP Telecoms line switching (1.117)REF. breakdown applications) 28.37 Industrial equipment Security (.105)MAX. (.022)DIA.REF. 2.66 0.55 Switch Type (.685)MIN. (.775)MAX. 17.39 19.69 (2.235)NOM. Contact Form A (SPST-NO) 56.77 Body: Glass Materials Leads: Tin-plated Ni-Fe wire Note: SPST-NO = Single-pole, single-throw, normally open Electrical Ratings 1 Contact Rating - W/VA - max. 10 Vdc - max. 1000 2 Switching 3 Voltage Vac - max. 265 4 Breakdown Vdc - min. 2000 Adc - max. 0.50 2 Switching 3 Current Aac - max. 0.35 Carry Adc - max. 1.30 - max. Contact, Initial Insulation Resistance 65V - min. Contact pF - typ. 0.2 Capacitance Operating C -75 to +125 Temperature 5 Storage 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. 2020 Littelfuse, Inc. Specifications are subject to change without notice. Revised: BO.11/14/20Axial Lead Reed Switches High Voltage > MVSR-20 Product Characteristics Operating Characteristics 1 Operate Time - 0.75ms - max. 1 Release Time - 0.30ms - max. 2 Shock 11ms 12 sine wave 100G - max. 2 Vibration 50-2000 Hertz 30G - max. Resonant Frequency - 3.2kHz - typ. Magnetic Characteristics 3 Pull-In Range Ampere Turns 17-38 4 Rating Sensitivity Ampere Turns 35 - Test Coil L4989 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. Drop-Out vs. Pull-In Chart Part Numbering System 30 Max. MVSR-20-22-28 25 20 Min. Series 15 AT Range 17-23 AT Example: 17-28 AT 10 22-28 AT product is 22-28 AT MVSR-20-22-28 22-33 AT 5 27-33 AT 27-38 AT 32-38 AT 0 0 5 10 15 20 25 30 35 40 Pull-In (AT, L4989 Coil) 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. Packaging Packaging Option Packaging Specification Quantity Quantity & Packaging Code Taping Width Bulk Bulk 1000 - - Disclaimer Notice - Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own applications. Littelfuse products are not designed for, and may not be used in, all applications. Read complete Disclaimer Notice at www.littelfuse.com/disclaimier-electronics. 2020 Littelfuse, Inc. Specifications are subject to change without notice. Revised: BO.11/14/20 Drop-Out (AT, L4989 Coil)