Axial Lead Reed Switches High Power > DRR-DTH DRR-DTH 39.7mm Standard Changeover Reed Switch RoHS 07/17/2017 N/A DSR-DTH Description The DRR-DTH Reed Switch is a large changeover switch with a 39.67mm long x 5.33mm diameter (1.562 x 0.210) glass envelope, capable high voltage and power switching up to 500Vdc at 30W. The DRR-DTH has an insulation 9 resistance of 10 ohms minimum and contact resistance of less than 125 milli-ohms. The DRT-DTH Reed Swith, another varient of the DRR-DTH, is made for heavier loads. Features Changeover switch Available sensitivity range Capable of switching 500Vdc or 50-80 AT 0.5A at up to 30W Minimum voltage breakdown Dimensions Minimum voltage breakdown 1200Vdc Dimensions in mm (inch) 1200Vdc 1.83 0.25 (.072) NOM. (.010) NOM. Benefits 1.27 CL OF OVERLAP 5.54 (.050) DIA. REF. 27.66 (.218) MAX. (1.89) REF. 5.33 Capable of switching European Hermetically sealed switch (.210) MAX. mains voltage contacts are not affected by and 1.02 Zero operating power required for have no effect on their external (.040) DIA. REF. 25.40 contact closure 12.45 environment (1.000) NOM. (.490) NOM. Can be used as changeover or 38.10 - 39.67 normally closed contact (1.500) NOM. - (1.562) MAX. 85.73 - 84.14 (3.375) NOM. - (3.3125) MIN. Applications Security Industrial safety applications Limit switching White goods applications Switch Type Contact Form C (SPDT-CO) Body: Glass Materials Leads: Tin-plated Ni-Fe wire Note: SPDT-CO = Single-Pole, Double-Throw, Change Over Electrical Ratings 1 Contact Rating W/VA - max. 30 2 Switching Vdc - max. 500 3 Voltage Vac - max. 350 4 Breakdown Vdc - min. 1200 2 Switching Adc - max. 0.50 3 Current Aac - max. 0.35 Carry Adc - max. 3.0 Contact, Initial - max. 0.125 Resistance 9 Insulation - min. 10 Capacitance Contact pF - typ. 2.0 Operating C -20 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. 2018 Littelfuse Revised: 01/31/18 littelfuse.com Specifications are subject to change without notice.Axial Lead Reed Switches High Power > DRR-DTH DRR-DTH 39.7mm Standard Changeover Reed Switch 07/17/2017 N/A DSR-DTH Product Characteristics Operating Characteristics 1 Operate Time 4.5ms - max. 1 Release Time 7.0ms - max. 2 Shock 11ms 12 sine wave 10G - max. 2 Vibration 50-2000 Hertz 15G - max. Resonant Frequency Hz - typ. 2.75kHz - typ. Magnetic Characteristics 3 Pull-In Range Ampere Turns 50-80 4 Rating Sensitivity Ampere Turns 60 Test Coil L4988 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 70 DRR-DTH-50-80 60 50 Series AT Range 40 Max. 50-55 AT Example: 50-80 AT product is 50-60 AT 30 DRR-DTH-50-80 50-80 AT Min. 55-60 AT 20 55-65 AT 65-70 AT 65-80 AT 10 70-75 AT 70-80 AT 0 75-80 AT 0 10 20 30 40 50 60 70 80 90 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 N/A N/A 2018 Littelfuse Revised: 01/31/18 littelfuse.com Specifications are subject to change without notice. Drop-Out (AT, L4989 Coil)