Datasheet > MDSM-4B-27-33

MDSM-4B-27-33

更新时间： 2024-11-25 14:56:39

品牌	Logo	应用领域
力特 - LITTELFUSE		/
页数	文件大小	规格书
3页	393K
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MDSM-4B-27-33 数据手册

Surface Mount Reed Switches

Low Power > MDSM-4

MDSM-4 15.3mm Surface Mount Reed Switch

RoꢀS

Description

The MDSM-4 surface mount reed switch is a sub-miniature, normally open

switch with a 15.24mm long x 2.28mm diameter (0.600” x 0.090”) glass

envelope, capable of switching 200Vdc at 10W.

This reed switch is a surface mount version of MDCG-4. It has high insulation

resistance of 10¹⁰ohms minimum and a contact resistance of less than

100 milliohms.

Features

• Capable of switching 200Vdc or

• Surface mount, normally

0.5A at up to 10W

open switch

Agency Approvals

• Available sensitivity 12-38 AT

• Low, stable contact resistance

Agency

Agency File Number

Ampere-Turns Range

Benefits

E47258

E471070

12-38 AT

• Zero operating power required for

contact closure

• Excellent for switching micro-

controller logic level loads

• Hermetically sealed switch

contacts are not affected by and

have no effect on their external

environment

Note: Contact Littelfuse for specific agency approval ratings.

Dimensions

Ø2.28

(.±9±)MAX

1.±±±±.1±

(.±39±.±±4)

Dimensions in mm (inch)

Applications

• Position Sensing

• Level sensing

• Industrial Controls

• Security

• Limit Switching

• Office Equipment

17.52±±.25

(.69±±.±1±)

15.24

(.6±±)MAX

Switch Type

ꢀ.84 MAX

(.11ꢀ)

19.30 0.ꢀ2

(.760 .010)

Contact Form

A (SPST-NO)

ꢀx0.00 MIN

(.000)

Body: Glass

Leads: Tin-plated Ni-Fe wire

Materials

RECOMMENDED LAND PATTERN

ꢀx1.30 (.021)

ꢀxꢀ.34 (.09ꢀ)

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

16.00

(.630)

Note: Land pattern is Littelfuse recommendation only. User is responsible for proper PCB design.

Electrical Ratings

Contact Rating ¹

W/VA - max.

Switching ²

Vdc - max.

Vac - max.

Vdc - min.

200

140

250

Voltage ³

Breakdown ⁴

Switching ²

Adc - max.

Aac - max.

Adc - max.

0.50

0.35

1.20

Current ³

Carry

Contact, Initial

Insulation

Ω - max.

Ω - min.

0.100

10¹⁰

Resistance

Capacitance

Temperature

Contact

pF - typ.

0.2

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.

Revised: BO.12/08/20

littelfuse.com

Speciﬁcations are subject to change without notice.

12 3

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