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 resistance of 1010 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 * Capable of switching 200Vdc or 01.0A at up to 20W. * Available sensitivity range 17-38 AT Agency Approvals Agency Agency File Number Ampere-Turns Range E47258 E471070 17-38 AT Note: Contact Littelfuse for specific agency approval ratings. * Hermetically sealed switch contacts are not affected by and have no effect on their external environment * Zero operating power required for contact closure Applications Dimensions Dimensions in mm * Office Equipments * Light Inductive Loads Switch Type 28.32 (1.115) REF. 20.19 (.795) MIN. Benefits * Security * Limit Switching CL OF OVERLAP * Close differential AT between PI and DO value * Maximum switched current of 1.0Amps 2.66 (.105) MAX. 0.61 (0.024) DIA. REF. 15.24 (.600) MAX. Contact Form A (SPST-NO) Materials Body: Glass Leads: Tin Plated Nickel Iron Note: SPST-NO = Single-pole, single-throw, normally open 56.64 (2.230) NOM. Electrical Ratings Contact Rating Watt - max. 20 Vdc - max. Vac - max. Vdc - min. 200 140 250 Carry Adc - max. Aac - max. Adc - max. 1.0 0.7 1.2 Resistance Contact, Initial Insulation - max. - min. 0.100 1010 Capacitance Contact pF - typ. 0.4 Temperature Operating Storage 5 C C -40 to +125 -65 to +125 1 Switching Voltage 2 3 Breakdown Switching Current 4 2 3 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. (c) 2020 Littelfuse Revised: BO.12/08/20 Specifications are subject to change without notice. littelfuse.com Axial Lead Reed Switches High Power > MLRR-3 MLRR-3 15.2mm Miniature Close Differential Reed Switch Product Characteristics Operating Characteristics Operate Time 1 0.7ms - max. Release Time 1 0.2ms - max. Shock 2 Vibration 2 11ms 12 sine wave 100G - max. 50-2000 Hertz 30G - max. Resonant Frequency 6.25kHz - typ. Magnetic Characteristics Pull-In Range 3 Rating Sensitivity 4 Ampere Turns 17-38 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 MLRR-3-17-23 40 35 Max. Drop-Out (AT, L4989 Coil) 30 Series 25 20 Min. 15 10 5 0 0 5 10 15 20 25 30 35 40 45 50 AT Range 17-23 AT 17-28 AT 22-28 AT 22-33 AT 27-33 AT 27-38 AT 32-38 AT Example: 17-23 AT product is MLRR-3-17-23 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 Bulk (c) 2020 Littelfuse Revised: BO.12/08/20 Specifications are subject to change without notice. Bulk Quantity 3000 Quantity & Packaging Code N/A Taping Width N/A littelfuse.com