Reed Sensors
Firecracker > 59022
59022 Firecracker Reed Sensor + 57022 Actuator
Description
The 59022 Firecracker Reed Sensor is a small cylindrical reed sensor, 25.4mm (L)
x 5.80mm (Dia.) (1.00” x 0.228”), with a choice of normally open, normally closed
or change-over contacts. It is capable of switching up to 200Vdc at 10W.
The 59022 Firecracker Reed Sensor is available with a range of sensitivity and
cable length options. It functions best with the 57022 actuator.
Note: The 57022 Actuator is sold separately.
Features
• Magnetically-operated proximity
sensor
• Hermetically sealed contacts
• Operates through non-ferrous
materials such as wood, plastic
or aluminum
• Options of normally open, normally
closed or single-pole-double-throw
• Customer-defined sensitivity option
• Custom cable length and connector
options available
Agency Approvals
Agency
Agency File Number
E61760
Note: Contact Littelfuse for specific agency approval ratings.
Benefits
• Fits nicely into small confined
spaces
• Quick and easy to install
• Well suited for usage in high-
moisture and contaminated
environments
• Non-contact solution, aesthetically
more appealing than push-button or
lever mechanical-type switches
• Ideal for battery-powered
applications as the contacts do not
draw power when in the non-
activated state
• Reed contacts last for millions of
operating cycles under micro-
controller logic level loads
Dimensions
Dimensions in mm (inch)
A
Applications
A
B
C
• Position and limit sensing
• Security
• Level sensing
• Linear actuators
A
Nom.
57022 Actuator
59022 Sensor
B
Nom.
C
Nom.
--
300 (11.81)
5.80 (.228) 25.40 (1.000)
5.80 (.228) 25.40 (1.000)
© 2017 Littelfuse
Revised: 12/11/17
Specifications are subject to change without notice.
littelfuse.com
Reed Sensors
Firecracker > 59022
59022 Firecracker Reed Sensor + 57022 Actuator
Electrical Ratings
Contact Type
Switch Type
Contact Rating
Voltage
4
1
Normally Open
1
VA/Watt - max.
Switching
2
Change Over
3
5
175
120
200
0.25
0.18
1.5
0.2
10
9
0.3
-40 to +105
Normally Closed
4
5
175
120
200
0.25
0.18
1.5
0.2
10
9
0.3
-40 to +105
10
200
140
250
0.5
0.35
1.2
0.2
10
10
0.3
-40 to +105
Breakdown
4
3
Vdc - max.
Vac - max.
Vdc - min.
Adc - max.
Aac - max.
Adc - max.
Ω - max.
Ω - min.
pF - typ.
°C
Current
Switching
Carry
5
2
Resistance
Contact, Initial
Insulation
Contact
Operating
Capacitance
Temperature
Product Characteristics
Operate Time
Release Time
Shock
7
7
6
6
ms - max.
ms - max.
11ms 1⁄2 sine
50-2000 Hz
G - max.
G - max.
1.0
1.0
100
30
3.0
3.0
50
30
3.0
3.0
50
30
Vibration
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
Switch Type
Pull-In AT Range
S
Activate Distance−D
mm (inch)
Average
Pull-In AT Range
T
U
Activate Distance−D
Activate Distance−D
mm (inch)
Pull-In AT Range
mm (inch)
Average
Average
1
3
4
Normally Open
Change Over
Normally Closed
12-18
15-20
15-20
9.6 (.377)
9.3 (.367)
9.3 (.367)
17-23
20-25
20-25
7.0 (.275)
7.5 (.295)
7.5 (.295)
22-28
25-30
25-30
5.0 (.197)
6.5 (.256)
6.5 (.256)
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
Schematics
Black
Black
Switch Type
1
3
Sensor
Actuator
D
Black
Black
4
© 2017 Littelfuse
Revised: 12/11/17
Specifications are subject to change without notice.
littelfuse.com
Firecracker > 59022
Reed Sensors
59022 Firecracker Reed Sensor + 57022 Actuator
Cable Length Specification
Cable Type: 24 AWG 7/32 PVC 105°C UL1430/UL1569
Select Option
02
Cable Length
mm (inch)
300 (11.81)
Termination Specification
Termination Options
Select
Option
A
F
E
Description
(Two-wire versions illustrated)
Tinned leads (6.4±0.76)mm
Untinned leads (6.4±0.76)mm
JST type XHP 2.5mm pitch
Part Numbering System
Sensor:
59022 - X - X - XX - X
Actuator:
57022 - 000
Series
Switch Type
1, 3, or 4
Sensitivity
S, T, or U
Cable Length
02
Termination
A, F or E
,
Series
Standard Actuator
000
Note: The 57022 Actuator is sold separately.
Packaging
Packaging Option
Bulk
Packaging Specification
Bulk
Quantity
500
Quantity & Packaging Code
N/A
Taping Width
N/A
Disclaimer Notice - Information furnished is believed to be accurate and reliable. However, users should independently evaluate the
suitability of and test each product selected for their own applications. Littelfuse products are not designed for, and may not be used
in, all applications. Read complete Disclaimer Notice at
www.littelfuse.com/disclaimer-electronics.
© 2017 Littelfuse
Revised: 12/11/17
Specifications are subject to change without notice.
littelfuse.com
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