Datasheet > MACD-14-25-30

MACD-14-25-30

更新时间： 2024-10-28 14:51:43

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力特 - LITTELFUSE		/
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MACD-14-25-30 数据手册

Axial Lead Reed Switches

Low Power > MACD-14

MACD-14 14mm Close-Differential Reed Switch

RoꢀS

Description

The MACD-14 reed switch is a close-differential, sub-miniature, normally open

switch with a 14.00mm long x 2.28mm diameter (0.551” x 0.090”) glass

envelope, capable of switching 200Vdc at 10W.

This reed switch is also available in a surface mount version, MASM-14. It has

a high insulation resistance of 10¹⁰ohms minimum and contact resistance less

than 100 milli-ohms. Both reed switches are intended for use in applications

that require low hysteresis between Pull-In and Drop-Out values.

Features

• Low close/open hysteresis (close

differential)

• Normally open switch

• Capable of switching

• UL Recognized for use in Class I,

Division 2, Groups A, B, C and D

and Class I, Zone 2, AEx/Ex nC IIC

Hazardous Locations.

Agency Approvals

200Vdc or 0.5A at up to 10W

• UL Recognized for the US and

Canadian Markets per UL 508 and

CSA C22.2 No. 14-10.

• Evaluated as an ATEX Component

for use in Potentially Explosive

Atmospheres. Marked II 3 G Ex nC

IIC Gc.

Agency

Agency File Number

Ampere-Turns Range

E47258

E471070

10-30 AT

Benefits

Note: Contact Littelfuse for specific agency approval ratings.

• 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

Dimensions

Dimensions in mm (inch)

CL OF OVERLAP

Applications

• Position Sensing

• Level Sensing

• Security

22.15

(.872) REF.

• Industrial Controls

• Office Equipment

• Home Appliances

0.51

(.020) DIA. REF.

2.28

(.090) MAX.

Switch Type

14.80

(.583) MIN.

14.00

(.551) MAX.

Contact Form

A (SPST-NO)

44.30

(1.744) NOM.

Body: Glass

Leads: Tin-plated Ni-Fe wire

Materials

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

Electrical Ratings

Contact Rating ¹

W/VA - max.

Switching ²

Vdc - max.

Vac - max.

Vdc - min.

200

140

200

Voltage ³

Current ³

Breakdown ⁴

Switching ²

Adc - max.

Aac - max.

Adc - max.

0.50

0.35

1.00

Carry

Contact, Initial

Insulation

Ω - max.

Ω - min.

0.100

10¹⁰

Resistance

Capacitance

Temperature

Notes:

Contact

pF - typ.

0.3

Operating

Storage ⁵

°C

-40 to +125

-65 to +125

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 and 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.12/07/20

littelfuse.com

Speciﬁcations are subject to change without notice.

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