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MISM-7 Datasheet(PDF) 1 Page - Littelfuse

Part No. MISM-7
Description  7mm Surface Mount Reed Switch
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Maker  LITTELFUSE [Littelfuse]
Homepage  http://www.littelfuse.com
Logo LITTELFUSE - Littelfuse

MISM-7 Datasheet(HTML) 1 Page - Littelfuse

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littelfuse.com
© 2020 Littelfuse
Revised: 12/08/20
Specifications are subject to change without notice.
Surface Mount Reed Switches
Ultra-Miniature > MISM-7
MISM-7 7mm Surface Mount Reed Switch
Description
The MISM-7 surface mount reed switch is a sub-miniature, normally open switch
with a 7mm long x 1.8mm diameter (0.276” x 0.071”) glass envelope, capable of
switching up to 0.25 Amps.
This reed switch is a surface mount version of the MITI-7. It has a high insulation
resistance of 1012 Ohms minimum and a contact resistance of less than 150
milliohms.
Agency Approvals
Agency
Agency File Number
Ampere-Turns Range
E47258
E471070
6 - 20AT
DEMKO 14 ATEX 1393U
6 - 20 AT
Switch Type
Contact Form
A (SPST-NO)
Materials
Body: Glass
Leads: Tin-plated Ni-Fe wire
Features
• Ultra-miniature surface mount
normally open switch
• Available sensitivity range 6-10 AT
• Capable of switching 170 Vdc or
0.25A up to 10W
Benefits
• Hermetically sealed switch
contacts are not effected by and
have no effect on their external
environment
• Zero operating power required
for contact closure
• Excellent for switching
microcontroller logic level loads
• Very low space requirement
Applications
• Position Sensing
• Level Sensing
• Meter Equipment
• Security
• Office Equipment
RoHS
Note: SPST-NO = Single-pole, single-throw, normally open
Electrical Ratings
Contact Rating 1
W/VA - max.
10
Voltage 3
Switching 2
Breakdown 4
Vdc - max.
Vac - max.
Vdc - min.
170
120
175
Current 3
Switching 2
Carry
Adc - max.
Aac - max.
Adc - max.
0.25
0.18
0.50
Resistance
Contact, Initial
Insulation
Ω - max.
Ω - min.
0.150
1012
Capacitance
Contact
pF - typ.
0.3
Temperature
Operating
Storage 5
°C
°C
-40 to +125
-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.
Note: Contact Littelfuse for specific agency approval ratings.


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