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
• Ultra-miniature, normally
open switch
• Capable of switching 170Vdc or
0.25A at up to 10W
• Available sensitivity range 6-10 AT
Agency Approvals
Agency
Agency File Number
E47258
E471070
DEMKO 14 ATEX 1393U
Benefits
Ampere-Turns Range
6-10 AT
6-10 AT
• 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
23.00
(.906) REF
.
CL OF OVERLAP
1.80
(.071) MAX.
0.38
.
(.015) DIA. REF
Switch Type
Contact Form
Materials
A (SPST-NO)
Body: Glass
Leads: Tin Plated Nickel Iron
7
.00
(.276) MAX.
46.00
(1.811) NOM.
Note: SPST-NO = Single-pole, single-throw, normally open
Electrical Ratings
Contact Rating
Voltage
Current
3
1
Watt - max.
Switching
2
Breakdown
4
Switching
Carry
2
10
170
175
0.25
0.5
0.15
10
12
0.3
-40 to +125
-65 to +125
Vdc - max.
Vdc - min.
A - max.
A - max.
Ω - max.
Ω - min.
pF - typ.
°C
°C
3
Resistance
Capacitance
Temperature
Contact, Initial
Insulation
Contact
Operating
Storage
5
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
Release Time
Shock
2
2
1
1
0.45ms - max.
0.2ms - max.
11ms 1∕2 sine wave
50-2000 Hertz
150G - max.
30G - max.
18.0kHz - typ.
Vibration
Resonant Frequency
Magnetic Characteristics
Pull-In Range
3
4
Ampere Turns
Ampere Turns
6-10
10
L4991
Rating Sensitivity
Test Coil
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
15
12.5
Drop-Out (AT, L4991 Coil)
Part Numbering System
MITI-3V1-6-10
Max.
Min.
10
7.5
5
Series
AT Range
6-10 AT
0
2.5
5
7.5
10
12.5
15
Pull-In (AT, L4991 Coil)
2.5
0
Example:
6-10 AT product is
MITI-3V1-6-10
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
Bulk
Packaging Specification
Bulk
Quantity
2000
Quantity & Packaging Code
N/A
Taping Width
N/A
© 2015 Littelfuse
Specifications are subject to change without notice.
littelfuse.com
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