littelfuse.com© 2015 Littelfuse
Specifications are subject to change without notice.
MITI-3V1 7mm Ultra-Miniature Reed Switch
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.
Agency Approvals
Agency Agency File Number Ampere-Turns Range
E47258
E471070 6-10 AT
DEMKO 14 ATEX 1393U 6-10 AT
Switch Type
Contact Form A (SPST-NO)
Materials Body: Glass
Leads: Tin Plated Nickel Iron
Axial Lead Reed Switches
Features
• Ultra-miniature, normally
open switch
• Capable of switching 170Vdc or
0.25A at up to 10W
• Available sensitivity range 6-10 AT
Benefits
• Hermetically sealed switch contacts
are not affected by and have no
effect on their external environment
• Very low space requirement
• Zero operating power required for
contact closure
• Excellent for switching micro-
controller logic level loads
Applications
• Reed relays
• Security
• Metering
• Mobile phones
Dimensions
Dimensions in mm
Electrical Ratings
Contact Rating 1Watt - max. 10
Voltage 3Switching 2
Breakdown 4
Vdc - max.
Vdc - min.
170
175
Current 3Switching 2
Carry
A - max.
A - max.
0.25
0.5
Resistance 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
Low Power > MITI-3V1
RoHS
23.00
(.906) REF. 1.80
(.071) MAX.
46.00
(1.811) NOM.
7. 00
(.276) MAX.
0.38
(.01
5) DIA. REF.
CL OF OVERLAP
Note: SPST-NO = Single-pole, single-throw, normally open
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.
littelfuse.com© 2015 Littelfuse
Specifications are subject to change without notice.
littelfuse.com© 2015 Littelfuse
Specifications are subject to change without notice.
Drop Out vs. Pull-In Chart
Packaging
Packaging Option Packaging Specification Quantity Quantity & Packaging Code Taping Width
Bulk Bulk 2000 N/A N/A
Product Characteristics
Operating Characteristics
Operate Time 10.45ms - max.
Release Time 10.2ms - max.
Shock 211ms 1∕2 sine wave 150G - max.
Vibration 250-2000 Hertz 30G - max.
Resonant Frequency 18.0kHz - typ.
Part Numbering System
Magnetic Characteristics
Pull-In Range 3Ampere Turns 6-10
Rating Sensitivity 4Ampere 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.
Note: The chart represents the range of Drop-Out, minimum to maximum for a given
Pull-In value.
MITI-3V1-6-10
Series
AT Range
6-10 AT Example:
6-10 AT product is
MITI-3V1-6-10
Axial Lead Reed Switches
Low Power > MITI-3V1
MITI-3V1 7mm Ultra-Miniature Reed Switch
0
2.5
5
7.5
10
12.5
15
02.5 57.5 10 12.5
15
Drop-Out (AT, L4991 Coil)
Pull-In (AT, L4991 Coil)
Max.
Min.
Additional Information
Datasheet Samples
Resources
