Axial Lead Reed Switches High Power > DRR-129 DRR-129 50.8mm Close-Differential Reed Switch RoHS 07/17/2017 N/A DRS-50 Description The DRR-129 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 100W. Will carry 6A and switch 3A. It has 10 high insulation resistance of 10 ohms minimum and contact resistance of less than 100 milli-ohms. Features • Normally open switch • Available sensitivity range • Capable of switching 400Vdc or 42-83 AT 3.0A at up to 100W • Minimum voltage breakdown 600Vdc Agency Approvals Benefits Agency Agency File Number Ampere-Turns Range • Hermetically sealed switch • Capable of switching European E47258 contacts are not affected by and mains voltage 42-83 AT E471070 have no effect on their external • Zero operating power required for environment contact closure DEMKO 14 ATEX 1393U 42-83 AT Applications Note: Contact Littelfuse for specific agency approval ratings. • Industrial safety applications • Security • Limit switching Dimensions Dimensions in mm (inch) CL OF OVERLAP 5.25 0.53 41.27 Switch Type (.207) MAX. (.021) REF. (1.625) REF. 12.70 (.500) REF. Contact Form A (SPST-NO) 15.24 50.80 Body: Glass Materials (.600) MIN. (2.000) MAX. Leads: Tin-plated Ni-Fe wire 82.55 (3.250) MAX. Note: SPST-NO = Single-pole, single-throw, normally open Electrical Ratings 1 Contact Rating W/VA - max. 100 2 Switching Vdc - max. 400 3 Voltage Vac - max. 280 4 Breakdown Vdc - min. 600 2 Switching Adc - max. 3.0 3 Current Aac - max. 2.1 Carry Adc - max. 6.0 Contact, Initial Ω - max. 0.100 Resistance 10 Insulation Ω - min. 10 Capacitance Contact pF - typ. 0.6 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 © 2018 Littelfuse Revised: 01/31/18 littelfuse.com Specifications are subject to change without notice. Axial Lead Reed Switches High Power > DRR-129 DRR-129 50.8mm Close-Differential Reed Switch Product Characteristics Operating Characteristics 1 Operate Time 4.5ms - max. 1 Release Time 2.5ms - max. 2 Shock 11ms 1∕2 sine wave 100G - max. 2 Vibration 50-2000 Hertz 30G - max. Resonant Frequency Hz - typ. 850Hz - typ. Magnetic Characteristics 3 Pull-In Range Ampere Turns 42-83 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 50 DRR-129-42-83 40 Max. Min. 30 Series AT Range 20 42-48 AT Example: 42-53 AT 42-83 AT product is 10 42-83 AT DRR-129-42-83 47-53 AT 0 47-58 AT 0 10 20 30 40 50 60 70 80 90 47-68 AT Pull-In (AT, L4988 Coil) 57-63 AT Note: Chart represents the range of Drop-Out, min to max for a given Pull-In value. 57-68 AT 62-68 AT 62-78 AT 67-73 AT 67-83 AT 77-83 AT 62-73 AT 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, L4988 Coil)