MISM-3V1R 6-10 - LITTELFUSE - Datasheet.Directory

Speciﬁcations are subject to change without notice.

MISM-3V1 7mm Surface Mount Reed Switch

Description

The MISM-3V1 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-3V1. It has a high

insulation resistance of 1012 Ohms minimum and a contact resistance of less

than 100 milliohms.

Agency Approvals

Agency Agency File Number Ampere-Turns Range

E47258

E471070 6-10AT

DEMKO 14 ATEX 1393U 6-10 AT

Switch Type

Contact Form A (SPST-NO)

Materials Body: Glass

Leads: Tin-plated Ni-Fe wire

Surface Mount Reed Switches

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

Dimensions

Dimensions in mm

Low Power > MISM-3V1

RoHS

Note: SPST-NO = Single-pole, single-throw, normally open

Note: Land pattern is Littelfuse recommendation

only. User is responsible for proper PCB design.

Electrical Ratings

Contact Rating 1W/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

-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.

Ø1.80 MAX

(.071) 2x0.84±0.10

(.033±004)

7.00 MAX

(.276)

0.02 MIN

(.001)

9.91±0.25

(.390±010)

13.72±0.25

(.540±010)

8.61

(.339)

2x1.12 (044)

2x3.25 (.128)

2.28 MAX

(.090)

RECOMMENDED LAND PATTERN

Speciﬁcations are subject to change without notice.

Magnetic Characteristics

Pull-In Range 3Ampere Turns 6-10

Rating Sensitivity 4Ampere Turns 10

Test Coil L4991

Drop-Out vs. Pull In Chart

Packaging

Packaging Option Packaging Specification Quantity Quantity and Packaging Code Taping Width

Tape and Reel EIA-RS-481-1 3000 R 32mm

Product Characteristics

Operating Characteristics

Operate Time 10.45ms - max.

Release Time 10.20ms - max.

Shock 211ms 1∕2 sine wave 150G - max.

Vibration 250-2000 Hertz 30G - max.

Resonant Frequency 18.0kHz - typ.

Part Numbering System

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. These AT values are the before modification AT of the MITI-3V1.

4. Rating Sensitivity - The value at which contact ratings and operating characteristics are determined. Derating may be required below this value.

MISM-3V1R - 6-10

Series

AT Range

6-10 AT

Packaging

R = Tape and Reel

B = Bulk

Surface Mount Reed Switches

Low Power > MISM-3V1

MISM-3V1 7mm Surface Mount Reed Switch

Example:

6-10 AT product is

MISM-3V1R-6-10

Note: This AT value is the before-modification value of the bare reed switch.

Note: Chart represents the range of Drop-Out, min to max for a given Pull-In value.

2.5

7.5

12.5

02.5 57.5 10 12.5

Drop-Out (AT, L4991 Coil)

Pull-In (AT, L4991 Coil)

Max.

Min.

Speciﬁcations are subject to change without notice.

TAPE DIMENSIONS mm (inch)

REEL DIMENSIONS mm (inch)

MISM-3V1 7mm Surface Mount Reed Switch

Surface Mount Reed Switches

Low Power > MISM-3V1