Axial Lead Reed Switches Low Power > MITI-3V1 MITI-3V1 7mm Ultra-Miniature Reed Switch RoHS Description The MITI-3V1 ultra-miniature reed switch is a normally open switch with a 7.00mm long x 1.80mm diameter (0.276” x 0.071”) glass envelope, which is capable of switching 170Vdc at 10W. It has a high insulation resistance of 10¹² ohms minimum and low contact resistance of less than 150 milliohms. The MITI-3V1 is also available in a surface mount version, that is, MISM-3V1. Features • Available sensitivity range 6-10 AT • Ultra-miniature, normally open switch • Capable of switching 170Vdc or 0.25A at up to 10W Benefits Agency Approvals Agency Agency File Number Ampere-Turns Range E47258 E471070 6-10 AT DEMKO 14 ATEX 1393U 6-10 AT • Reed relays • Security • Metering • Mobile phones Switch Type Dimensions in mm CL OF OVERLAP 1.80 (.071) MAX. • Zero operating power required for contact closure • Excellent for switching microcontroller logic level loads Applications Dimensions 23.00 (.906) REF. • Hermetically sealed switch contacts are not affected by and have no effect on their external environment • Very low space requirement 0.38 (.015) DIA. REF. Contact Form A (SPST-NO) Materials Body: Glass Leads: Tin Plated Nickel Iron Note: SPST-NO = Single-pole, single-throw, normally open 7.00 (.276) MAX. 46.00 (1.811) NOM. Electrical Ratings Contact Rating Watt - max. 10 Vdc - max. Vdc - min. 170 175 A - max. A - max. 0.25 0.5 Contact, Initial Insulation Ω - max. Ω - min. 0.15 1012 Capacitance Contact pF - typ. 0.3 Temperature Operating Storage 5 °C °C -40 to +125 -65 to +125 Voltage 3 Current 3 1 Resistance Switching 2 Breakdown 4 Switching Carry 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. © 2015 Littelfuse Specifications are subject to change without notice. littelfuse.com Axial Lead Reed Switches Low Power > MITI-3V1 MITI-3V1 7mm Ultra-Miniature Reed Switch Product Characteristics Operating Characteristics Operate Time 1 0.45ms - max. Release Time 1 0.2ms - max. Shock 2 Vibration 11ms 1∕2 sine wave 150G - max. 50-2000 Hertz 30G - max. 2 Resonant Frequency 18.0kHz - typ. Magnetic Characteristics Pull-In Range 3 Rating Sensitivity 4 Ampere Turns 6-10 Ampere Turns 10 Test Coil L4991 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 15 MITI-3V1-6-10 Drop-Out (AT, L4991 Coil) 12.5 10 Max. 7.5 Min. 5 Series 2.5 0 AT Range Example: 6-10 AT 0 2.5 5 7.5 10 12.5 15 6-10 AT product is MITI-3V1-6-10 Pull-In (AT, L4991 Coil) Note: The chart represents the range of Drop-Out, minimum to maximum for a given Pull-In value. Additional Information Datasheet Resources Samples Packaging Packaging Option Packaging Specification Bulk © 2015 Littelfuse Specifications are subject to change without notice. Bulk Quantity 2000 Quantity & Packaging Code N/A Taping Width N/A littelfuse.com