MDSM-DTR-20-25 Littelfuse

Surface Mount Reed Switches Low Power > MDSM-DT MDSM-DT 14.7mm Surface Mount Changeover Reed Switch RoHS Description The MDSM-DT Reed Switch is a miniature, surface mounting, changeover switch with a 14.73mm long x 2.54mm diameter (0.580 x 0.100) glass envelope. It is capable of switching 175Vdc at 5W. The MDSM-DT has an insulation resistance 9 of 10 ohms minimum and contact resistance less than 100 milli-ohms. This reed switch is a surface mount version of the MDRR-DT. Features Surface mount SPDT Available sensitivity 15-30 AT changeover switch Capable of switching 175Vdc or 0.25A at up to 5W Agency Approvals Benefits Agency Agency File Number Ampere-Turns Range Zero operating power required for Hermetically sealed switch contact closure contacts are not affected by and E47258 Excellent for switching have no effect on their external 15-30 AT E471070 microcontroller logic level loads environment Note: Contact Littelfuse for specific agency approval ratings. Applications 2.540.38 (.100.015) Office Equipments Position Sensing COMMON 14.73 2.54 0.56 Dimensions LEAD (.580)MAX Mobile P(.100)MAXhones Level Sensing (.022) N.O. Dimensions in mm (inch) Industrial Controls 2.540.38 N.C. (.100.015) 0.51 CL OF OVERLAP COMMON 14.73 2.54 (.020) 0.56 10.670.51 LEAD 0.56 (.580)MAX (.100)MAX Switch Type (.022) (.420.020) (.022) N.O. N.C. Contact Form C (SPDT-CO) 0.51 CL OF OVERLAP (.020) 10.670.51 0.025 0.56 (.420.020) (.001)MIBody: GlassN (.022) 2.87 Materials 20.320.25 (.113)MAX Leads: Tin-plated Ni-Fe wire (.800.010) 25.400.25 Note: SPDT-CO = Single-Pole, Double-Throw, Change-Over 0.025 (1.000.010) (.001)MIN 2.87 RECOMMENDED LAND PATTERN 20.320.25 (.113)MAX (.800.010) 19.30 3.50 (.760) (.138)TYP 25.400.25 (1.000.010) RECOMMENDED LAND PATTERN 1.60 Note: Land pattern is Littelfuse recommendation only. User is responsible for proper PCB design. 0.51 (.063)TYP 19.30 3.50 0.94 (.020) (.760) (.138)TYP (.037) Electrical Ratings 1.60 0.51 (.063)TYP 1 Contact Rating W/VA - max. 5 0.94 (.020) (.037) 2 Switching Vdc - max. 175 3 Voltage Vac - max. 120 4 Breakdown Vdc - min. 200 2 Switching Adc - max. 0.25 3 Current Aac - max. 0.18 Carry Adc - max. 1.50 - max. 0.100 Resistance Contact, Initial Insulation 9 - min. 10 Capacitance Contact pF - typ. 1.0 Operating C -40 to +125 Temperature 5 Storage C -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. 2020 Littelfuse Revised: BO.12/08/20 littelfuse.com Specifications are subject to change without notice.Surface Mount Reed Switches Low Power > MDSM-DT MDSM-DT 14.7mm Surface Mount Changeover Reed Switch Product Characteristics Operating Characteristics 1 Operate Time 0.7ms - max. 1 Release Time 1.0ms - max. 2 Shock 11ms 12 sine wave 50G - max. 2 Vibration 50-2000 Hertz 30G - max. Resonant Frequency 11.0kHz - typ. Magnetic Characteristics 3 Pull-In Range Ampere Turns 15-30 4 Rating Sensitivity Ampere Turns 20 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. These AT values are the before modification AT of the MDRR-DT. 4. Rating Sensitivity - The value at which contact ratings and operating characteristics are determined. Derating may be required below this value. Drop-Out vs. Pull-In Chart Part Numbering System 25 MDSM-DTR - 15-20 20 Max. 15 Min. Series Packaging 10 R = Tape and Reel B = Bulk 5 AT Range 15-30 AT Example: 15-20 AT product in Bulk 15-20 AT 0 packaging is MDSM-DTB-15-20 20-25 AT 0 5 10 15 20 25 30 35 25-30 AT Pull-In (AT, L4989 Coil) Note: These AT values are the before-modification values of the bare reed switch. Note: Chart represents the range of Drop-Out, min to max, for a given Pull-In value of the MDRR-DT prior to modification into the MDSM-DT. Packaging Packaging Option Packaging Specification Quantity Quantity and Packaging Code Taping Width Tape and Reel EIA-RS-481-1 3000 R 32mm Bulk N/A 200 B N/A 2020 Littelfuse Revised: BO.12/08/20 littelfuse.com Specifications are subject to change without notice. Drop-Out (AT, L4989 Coil)