Reed Relays and
Electronics India Limited
Manufacturer of Reed Switches, Reed Sensors and Reed-based products
Reed Relays and Electronics India Limited Incorporated in 1971

Actuation Distances for HB-2232 Formed Reed Switch

For easy selection of AT band and Magnet for an application, we offer Actuation distances for the HB-2232 Reed Switch in cropped, SMD, horizontal and vertical mount formations. The various combinations of standard AT Bands and magnets are covered, from the lower AT bands to the higher AT bands. Each AT band lists distances when actuated with our standard magnets. Although some of the AT band / magnet combinations of the HB-2232 Reed Switch will produce similar actuating distances, selecting the right AT band and magnet for an application is important. Our Usage Notes below addresses these topics.

All distances given are in mm and standard tolerances of ±0.5 mm apply.

Actuation Distances for Cropped Leads

cropped reed switch actuation distance
Magnet actuation direction

Operate Band 30-40 (AT)

MagnetDimensionsOperate DistanceRelease Distance
NDR-T4.0 x 1.5 x 1.5
NDR-S6.0 x 2.5 x 2.5
NDR-M8.0 x 3.0 x 3.0
NDR-I12.0 x 3.5 x 3.5
NDR-L19.0 x 4.0 x 4.0
NDC-TØ2.0 x 4.0
NDC-SØ3.0 x 7.0
NDC-MØ4.0 x 10.0
NDC-IØ6.0 X 12.0
NDC-LØ8.0 x 15.0

Operate Band 40-50 (AT)

MagnetDimensionsOperate DistanceRelease Distance
NDR-T4.0 x 1.5 x 1.5
NDR-S6.0 x 2.5 x 2.5
NDR-M8.0 x 3.0 x 3.0
NDR-I12.0 x 3.5 x 3.5
NDR-L19.0 x 4.0 x 4.0
NDC-TØ2.0 x 4.0
NDC-SØ3.0 x 7.0
NDC-MØ4.0 x 10.0
NDC-IØ6.0 X 12.0
NDC-LØ8.0 x 15.0

Operate Band 50-60 (AT)

MagnetDimensionsOperate DistanceRelease Distance
NDR-T4.0 x 1.5 x 1.5
NDR-S6.0 x 2.5 x 2.5
NDR-M8.0 x 3.0 x 3.0
NDR-I12.0 x 3.5 x 3.5
NDR-L19.0 x 4.0 x 4.0
NDC-TØ2.0 x 4.0
NDC-SØ3.0 x 7.0
NDC-MØ4.0 x 10.0
NDC-IØ6.0 X 12.0
NDC-LØ8.0 x 15.0

Actuation Distances for SMD Formed Leads

SMD formed reed switch actuation distance
Magnet actuation direction

Operate Band 30-40 (AT)

MagnetDimensionsOperate DistanceRelease Distance
NDR-T4.0 x 1.5 x 1.5
NDR-S6.0 x 2.5 x 2.5
NDR-M8.0 x 3.0 x 3.0
NDR-I12.0 x 3.5 x 3.5
NDR-L19.0 x 4.0 x 4.0
NDC-TØ2.0 x 4.0
NDC-SØ3.0 x 7.0
NDC-MØ4.0 x 10.0
NDC-IØ6.0 X 12.0
NDC-LØ8.0 x 15.0

Operate Band 40-50 (AT)

MagnetDimensionsOperate DistanceRelease Distance
NDR-T4.0 x 1.5 x 1.5
NDR-S6.0 x 2.5 x 2.5
NDR-M8.0 x 3.0 x 3.0
NDR-I12.0 x 3.5 x 3.5
NDR-L19.0 x 4.0 x 4.0
NDC-TØ2.0 x 4.0
NDC-SØ3.0 x 7.0
NDC-MØ4.0 x 10.0
NDC-IØ6.0 X 12.0
NDC-LØ8.0 x 15.0

Operate Band 50-60 (AT)

MagnetDimensionsOperate DistanceRelease Distance
NDR-T4.0 x 1.5 x 1.5
NDR-S6.0 x 2.5 x 2.5
NDR-M8.0 x 3.0 x 3.0
NDR-I12.0 x 3.5 x 3.5
NDR-L19.0 x 4.0 x 4.0
NDC-TØ2.0 x 4.0
NDC-SØ3.0 x 7.0
NDC-MØ4.0 x 10.0
NDC-IØ6.0 X 12.0
NDC-LØ8.0 x 15.0

Actuation Distances for Horizontal Mounting on PCBs

Goal-post leads and magnet
Magnet actuation direction

Operate Band 30-40 (AT)

MagnetDimensionsOperate DistanceRelease Distance
NDR-T4.0 x 1.5 x 1.5
NDR-S6.0 x 2.5 x 2.5
NDR-M8.0 x 3.0 x 3.0
NDR-I12.0 x 3.5 x 3.5
NDR-L19.0 x 4.0 x 4.0
NDC-TØ2.0 x 4.0
NDC-SØ3.0 x 7.0
NDC-MØ4.0 x 10.0
NDC-IØ6.0 X 12.0
NDC-LØ8.0 x 15.0

Operate Band 40-50 (AT)

MagnetDimensionsOperate DistanceRelease Distance
NDR-T4.0 x 1.5 x 1.5
NDR-S6.0 x 2.5 x 2.5
NDR-M8.0 x 3.0 x 3.0
NDR-I12.0 x 3.5 x 3.5
NDR-L19.0 x 4.0 x 4.0
NDC-TØ2.0 x 4.0
NDC-SØ3.0 x 7.0
NDC-MØ4.0 x 10.0
NDC-IØ6.0 X 12.0
NDC-LØ8.0 x 15.0

Operate Band 50-60 (AT)

MagnetDimensionsOperate DistanceRelease Distance
NDR-T4.0 x 1.5 x 1.5
NDR-S6.0 x 2.5 x 2.5
NDR-M8.0 x 3.0 x 3.0
NDR-I12.0 x 3.5 x 3.5
NDR-L19.0 x 4.0 x 4.0
NDC-TØ2.0 x 4.0
NDC-SØ3.0 x 7.0
NDC-MØ4.0 x 10.0
NDC-IØ6.0 X 12.0
NDC-LØ8.0 x 15.0

Actuation Distances for Vertical Mounting on PCBs

Welded leads and magnet
Magnet actuation direction

Operate Band 30-40 (AT)

MagnetDimensionsOperate DistanceRelease Distance
NDR-T4.0 x 1.5 x 1.5
NDR-S6.0 x 2.5 x 2.5
NDR-M8.0 x 3.0 x 3.0
NDR-I12.0 x 3.5 x 3.5
NDR-L19.0 x 4.0 x 4.0
NDC-TØ2.0 x 4.0
NDC-SØ3.0 x 7.0
NDC-MØ4.0 x 10.0
NDC-IØ6.0 X 12.0
NDC-LØ8.0 x 15.0

Operate Band 40-50 (AT)

MagnetDimensionsOperate DistanceRelease Distance
NDR-T4.0 x 1.5 x 1.5
NDR-S6.0 x 2.5 x 2.5
NDR-M8.0 x 3.0 x 3.0
NDR-I12.0 x 3.5 x 3.5
NDR-L19.0 x 4.0 x 4.0
NDC-TØ2.0 x 4.0
NDC-SØ3.0 x 7.0
NDC-MØ4.0 x 10.0
NDC-IØ6.0 X 12.0
NDC-LØ8.0 x 15.0

Operate Band 50-60 (AT)

MagnetDimensionsOperate DistanceRelease Distance
NDR-T4.0 x 1.5 x 1.5
NDR-S6.0 x 2.5 x 2.5
NDR-M8.0 x 3.0 x 3.0
NDR-I12.0 x 3.5 x 3.5
NDR-L19.0 x 4.0 x 4.0
NDC-TØ2.0 x 4.0
NDC-SØ3.0 x 7.0
NDC-MØ4.0 x 10.0
NDC-IØ6.0 X 12.0
NDC-LØ8.0 x 15.0

Ampere Turn Selection
Reed Sensor Manufacturer Cross Reference For any application, it is important to select the correct Ampere Turn (AT) or magnetic sensitivity of a Reed Switch, Reed Sensor or Continue reading ->

Aug 27, 2020

Magnet Usage
Magnet storage Rectangular Magnets The storage and usage temperature of magnets should be within the individual raw material specification limits. It Continue reading ->

Sep 4, 2019

Operating Characteristics of a Reed Switch
Magnetic characteristics of a reed switch The following examples show typical operating characteristics of a reed switch when actuated with a magnet from various axes. Generally, Continue reading ->

Sep 4, 2019

Magnet Information
Magnet Information In general, there are four families of magnets available commercially. Factors such as operating temperature, demagnetizing effects, Continue reading ->

Nov 4, 2020