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small switching signal applications. This switch has

sputtered ruthenium contacts and an extraordinary seal

strength, achieved by a patented laser sealing of the glass.

In low level or dry switching environments, both switches

typically provide >1 billion operations. The switches have

hermetically sealed contacts and offer a wide range of

available magnetic sensitivities.

Features

Description

Applications

Approvals

Standard Test Coil

The magnetic force (expressed in NI, AT or Ampere Turns) required to cause the reed switch contacts to

close is called the pull-in or operate value.

Ordering Information

A complete part number is represented by the digits to the right. For example, FR2S1030 is a

specification charts for available ranges. Special ranges are available upon request.

Surface Mount Dyad

Refer to operating characteristics table for complete part number.

Maximum Operate Value (NI)

Minimum Operate Value (NI)

FR2 SXXXX

The reed switch shall be placed in the test coil with the gap centered in the core of the coil winding.

Test leads and their clips must be non-magnetic.

The longitudinal axis of the test coil and the test switch shall be vertical.

FR2

Part #

Coil - 1

Coil definition

NARM1 CTC01

Coil resistance

1200

Ω

Number of turns

5,000

Wire size (nom. diameter)

0.0399mm (AWG 46)

Bobbin diameter (inside coil)

3.96mm

Winding length

10.4mm

Part #

FR2S1015

10 to 15

FR2S1020

10 to 20

FR2S1030

10 to 30

FR2S1520

15 to 20

FR2S1525

15 to 25

FR2S2025

20 to 25

Part #

FR2024

10 to 15

FR2259

10 to 20

FR2282

10 to 30

FR2025

15 to 20

FR2249

15 to 25

FR2026

20 to 25

± 1.5NI

1

FR2

DS-FR2-R2