Axial Lead Reed Switches High Power > MLRR-3 MLRR-3 15.2mm Miniature Close Differential Reed Switch RoHS Description The MLRR-3 Reed Switch is a miniature, normally open switch with a 15.24mm long x 2.54mm diameter (0.600 x 0.100) glass envelope, capable of switching 200Vdc at 20W with close differential (CD) characteristics. It has high insulation 10 resistance of 10 ohms minimum and contact resistance less than 100 milli-ohms. This reed switch is also available in a surface mount version, that is, MLSM-3. It can handle light inductive loads. Features Miniature normally open switch Close differential AT between PI Capable of switching 200Vdc or and DO value 01.0A at up to 20W. Maximum switched current of Available sensitivity range 17-38 AT 1.0Amps Agency Approvals Agency Agency File Number Ampere-Turns Range Benefits Hermetically sealed switch contacts Zero operating power required for E47258 17-38 AT are not affected by and have no contact closure E471070 effect on their external environment Note: Contact Littelfuse for specific agency approval ratings. Applications Security Office Equipments Limit Switching Light Inductive Loads Dimensions Dimensions in mm Switch Type 28.32 (1.115) REF. 0.61 2.66 Contact Form A (SPST-NO) CL OF OVERLAP (0.024) DIA. REF. (.105) MAX. Body: Glass Materials Leads: Tin Plated Nickel Iron 20.19 15.24 Note: SPST-NO = Single-pole, single-throw, normally open (.795) MIN. (.600) MAX. 56.64 (2.230) NOM. Electrical Ratings 1 Contact Rating Watt - max. 20 2 Switching Vdc - max. 200 3 Voltage Vac - max. 140 4 Breakdown Vdc - min. 250 2 Switching Adc - max. 1.0 3 Current Aac - max. 0.7 Carry Adc - max. 1.2 Contact, Initial - max. 0.100 Resistance 10 Insulation - min. 10 Capacitance Contact pF - typ. 0.4 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.Axial Lead Reed Switches High Power > MLRR-3 MLRR-3 15.2mm Miniature Close Differential Reed Switch Product Characteristics Operating Characteristics 1 Operate Time 0.7ms - max. 1 Release Time 0.2ms - max. 2 Shock 11ms 12 sine wave 100G - max. 2 Vibration 50-2000 Hertz 30G - max. Resonant Frequency 6.25kHz - typ. Magnetic Characteristics 3 Pull-In Range Ampere Turns 17-38 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. 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 40 MLRR-3-17-23 35 Max. 30 Series 25 20 AT Range Example: Min. 17-23 AT product is 17-23 AT 15 MLRR-3-17-23 17-28 AT 22-28 AT 10 22-33 AT 5 27-33 AT 27-38 AT 0 32-38 AT 05 10 15 20 25 30 35 40 45 50 Pull-In (AT, L4989 Coil) Note: The chart represents the range of Drop-Out, minimum to maximum 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 3000 N/A N/A 2020 Littelfuse Revised: BO.12/08/20 littelfuse.com Specifications are subject to change without notice. Drop-Out (AT, L4989 Coil)