littelfuse.com© 2016 Littelfuse Revised: 11/08/16
Specifications are subject to change without notice.
59020 Miniature Firecracker Reed Sensor + 57020 Actuator
Reed Sensors
Electrical Ratings
Contact Type Normally Open
Switch Type 1
Contact Rating
1
VA/Watt - max. 10
Voltage
4
Switching
2
Breakdown
3
Vdc - max.
Vdc - min.
170
175
Current
4
Switching
2
Carry
Adc - max.
Adc - max.
0.25
0.5
Resistance
5
Contact, Initial
Insulation
Ω - max.
Ω - min.
0.2
10
10
Capacitance Contact pF - typ. 0.2
Temperature Operating °C -40 to +105
Product Characteristics
Operate Time
6
ms - max. 1.0
Release Time
6
ms - max. 1.0
Shock
7
11ms ½ sine G - max. 100
Vibration
7
50-2000 Hz G - max. 30
Firecracker > 59020
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.
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.
Sensitivity Options (Using 57020 Actuator)
Select Option S
Switch Type Pull-In AT Range
Activate Distance – D
mm (inch)
Average
1 Normally Open 6-10 6.0 (.236)
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
