littelfuse.com

© 2015 Littelfuse

Revised: 10/29/15

Specifications are subject to change without notice.

59022 Firecracker Reed Sensor + 57022 Actuator

Reed Sensors

Electrical Ratings

Contact Type

Normally Open

Change Over

Normally Closed

Switch Type

1

3

4

VA/Watt - max.

10

5

5

Vdc - max.

Vdc - min.

200

140

250

175

120

200

175

120

200

Carry

Adc - max.

Aac - max.

Adc - max.

0.5

0.35

1.2

0.25

1.0

1.5

0.25

1.0

1.5

Contact, Initial

Insulation

Ω - max.

Ω - min.

0.2

0.2

0.2

Capacitance

Contact

pF - typ.

0.3

0.3

0.3

Temperature

Operating

°C

-40 to +105

-40 to +105

-40 to +105

Product Characteristics

ms - max.

1.0

3.0

3.0

ms - max.

1.0

3.0

3.0

11ms 1⁄2 sine

G - max.

100

50

50

50-2000 Hz

G - max.

30

30

30

Firecracker > 59022

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. Breakdown Voltage - per MIL-STD-202, Method 301. Leakage current is less than 0.1mA for 60 seconds.

4. Electrical Load Life Expectancy - Contact Littelfuse with voltage, current values along with type of load.

5. This resistance value is for 11.81mm wire length. Resistance changes when wire lengthens.

6. Operate (including bounce)/Release Time - per EIA/NARM RS-421-A, diode suppressed coil (Coil II).

7. Shock and Vibration - per EIA/NARM RS-421-A and MIL-STD-202.

8. For custom modifications to the wire length or size, or adding a special connector, please contact Littelfuse.

9. Custom sensitivities and a high voltage switch are options

Sensitivity Options (Using 57022 Actuator)

Select Option

S

T

U

Switch Type

Pull-In AT Range

Activate Distance

mm (inch)

Average

Pull-In AT Range

Activate Distance

mm (inch)

Average

Pull-In AT Range

Activate Distance

mm (inch)

Average

1

Normally Open

12-18

9.6 (.377)

17-23

7.0 (.275)

22-28

5.0 (.197)

3

Change Over

15-20

9.3 (.367)

20-25

7.5 (.295)

25-30

6.5 (.256)

4

Normally Closed

15-20

9.3 (.367)

20-25

7.5 (.295)

25-30

6.5 (.256)

Schematics

Switch Type

1

3

4

Black

Black

Black

Blue

White

Black

Black

Note:

1. Pull-In AT Range: These AT values are the bare reed switch AT before modification.

2. The activation distance is average value on the final sensor assembly

D

Sensor

Actuator