Axial Lead Reed Switches High Power > DRS-50 DRS-50 50.8mm High Power Reed Switch RoHS Description The DRS-50 Reed Switch is a standard, normally open switch with a 50.80mm long x 5.25mm diameter (2.000” x .207”) glass envelope, capable of high voltage and power switching up to 400Vdc at 2mA. Will carry 6A and switch up to 100W/VA. It has high insulation resistance of 1010 ohms minimum and contact resistance of less than 100 milli-ohms. • Normally open switch • Capable of switching 400Vdc or 3.0A at up to 100W • Minimum voltage breakdown 600Vdc Agency Approvals Ampere-Turns Range Pending 42-83 AT Pending 42-83 AT Benefits • Hermetically sealed switch contacts are not affected by and have no effect on their external environment Note: Contact Littelfuse for specific agency approval ratings. Applications Dimensions • Security • Limit switching Dimensions in mm (inch) 41.27 (1.625) REF. 12.70 (.500) REF. CL OF OVERLAP 15.24 (.600) MIN. 5.25 (.207) MAX. 0.53 (.021) REF. 50.80 (2.000) MAX. 82.55 (3.250) MAX. Contact Rating • Capable of switching European mains voltage • Zero operating power required for contact closure • Industrial applications • White Goods Switch Type Contact Form A (SPST-NO) Materials Body: Glass Leads: Tin-plated Ni-Fe wire Note: SPST-NO = Single-pole, single-throw, normally open EL Electrical Ratings • Available sensitivity range 42-83 AT A Agency File Number IM IN Agency RY Features W/VA - max. 100 Vdc - max. Vac - max. Vdc - min. 400 280 600 Carry Adc - max. Aac - max. Adc - max. 3.0 2.1 6.0 Resistance Contact, Initial Insulation Ω - max. Ω - min. 0.100 1010 Capacitance Contact pF - typ. 0.6 Temperature Operating Storage 5 °C °C -40 to +125 -65 to +125 Voltage 3 Current 3 1 Switching 2 PR Breakdown Switching 4 2 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 © 2017 Littelfuse Revised: 07/17/17 Specifications are subject to change without notice. littelfuse.com Axial Lead Reed Switches High Power > DRS-50 DRS-50 50.8mm High Power Reed Switch Product Characteristics Operating Characteristics Operate Time 1 4.5ms - max. Release Time 1 2.5ms - max. Vibration 11ms 1∕2 sine wave 100G - max. 50-2000 Hertz 30G - max. 2 Resonant Frequency RY Shock 2 Hz - typ. 850Hz - typ. Magnetic Characteristics Pull-In Range Ampere Turns 3 Rating Sensitivity 42-83 Ampere Turns 4 L4988 A Test Coil 60 IN Notes: 1. Operate (including bounce)/Release Time - per EIA/NARM RS-421-A,diode suppressed coil (Coil IV). 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 50 M Min. 30 20 10 0 0 EL I Drop-Out (L4988 Coil) DRS-50-42-83 Max. 40 10 20 30 40 50 60 70 80 90 Pull-In (L4988 Coil) PR Note: Chart represents the range of Drop-Out, min to max for a given Pull-In value. Series AT Range 42-48 AT 42-53 AT 42-83 AT 47-53 AT 47-58 AT 47-68 AT 57-63 AT 57-68 AT 62-68 AT 62-78 AT 67-73 AT 67-83 AT 77-83 AT 62-73 AT Example: 42-83 AT product is DRS-50-42-83 Note: These AT values are the before-modification values of the bare reed switch. Packaging Packaging Option Packaging Specification Bulk © 2017 Littelfuse Revised: 07/17/17 Specifications are subject to change without notice. Bulk Quantity 1000 Quantity & Packaging Code N/A Taping Width N/A littelfuse.com