littelfuse.com

© 2015 Littelfuse

Revised: 11/02/15

Specifications are subject to change without notice.

Drop-Out vs. Pull-In Chart

Packaging

Packaging Option

Packaging Specification

Quantity

Quantity & Packaging Code

Taping Width

Bulk

Bulk

1000

N/A

N/A

Product Characteristics

Operating Characteristics

5.5ms - max.

8.0ms - max.

11ms 1∕2 sine wave

10G - max.

50-2000 Hertz

15G - max.

Resonant Frequency

Hz - typ.

2.75kHz - 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.

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

5. Custom modifications of forming and/or cutting of reed switches are available. Please contact Littelfuse.

Surface Mount Reed Switches

High Power > DRT-DTH

DRT-DTH 39.7mm Standard Changeover Reed Switch

DRT-DTH-50-80

Series

AT Range

50-60 AT

50-65 AT

50-80 AT

65-75 AT

70-75 AT

70-80 AT

75-80 AT

Example:

50-80 AT product is

DRT-DTH-50-80

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

Note: These AT values are the before-modification values of the bare reed switch.

Magnetic Characteristics

Ampere Turns

50-80

Ampere Turns

60

Test Coil

L4988

10

0

20

30

40

50

60

70

10

0

Pull-In (AT, L4989 Coil)

20

30

40

50

60

70

80

90

Max.

Min.