Overmolded Reed Switches
Low Power > 59045
59045 Miniature PCB Mountable Reed Switch + 57045 Actuator
Description
The 59045 is a miniature PCB-mountable reed switch, 17.78mm x 4.32mm x
3.3mm (0.700” x 0.170” x 0.130”) with a normally open contact. It has moulded
stand-offs to allow board washing. It is capable of switching up to 200Vdc at
10W. It functions best with the matching actuator 57045-000.
Note: The 57045 Actuator is sold separately.
Features
• Two-part magnetically operated
proximity switch
• Normally open contact configuration
• Moulded stand-offs to allow
board washing
• Wave solder capable
• Certified for use in North American
Hazardous Locations: Class I,
Division 2 and Zone 2
• ATEX certified for use in European
explosive atmospheres:
II 3 G
Ex nC IIC Gc
Agency Approvals
Agency
Agency File Number
E61760
E471070
DEMKO 14 ATEX 1393U
II 3 G Ex nC IIC Gc
Note: Contact Littelfuse for specific agency approval ratings.
Benefits
• Mounts directly into printed
circuit board
• No standby power requirement
• Operates through non-ferrous
materials such as wood, plastic
or aluminium
• Hermetically sealed, magnetically
operated contacts continue to
operate long after optical and other
technologies fail due
to contamination
Applications
• Position and Limit Sensing
• Security System Switch
• Door Switch
Dimensions
Dimensions in mm (inch)
B
A
D
A
E
B
D
Switch
Actuator
C
F
A
Max.
B
Max.
17.78
(.700)
17.78
(.700)
C
C
±0.25 (.010)
*
15.24
(.600)
D
Max.
3.3
(.130)
3.3
(.130)
E
±0.38 (.015)
–
3.3
(.130)
F
Nom.
–
0.4699
(.0185”) Dia.
57045 Actuator
59045 Switch
4.32
(.170)
4.32
(.170)
* Mounting: 1.57 (.062) thick board, 3.17 (.125) holes on 13.72mm (.540) centerline.
© 2016 Littelfuse
Revised: 03/04/16
Specifications are subject to change without notice.
littelfuse.com
Overmolded Reed Switches
Low Power > 59045
59045 Miniature PCB Mountable Reed Switch + 57045 Actuator
Electrical Ratings
Contact Type
Switch Type
Contact Rating
Voltage
3
1
Normally Open
1
VA/Watt - max.
Switching
2
10
200
140
250
0.5
0.35
1.2
0.2
10
10
0.3
-40 to +105
Breakdown
3
4
Vdc - max.
Vac - max.
Vdc - min.
Adc - max.
Aac - max.
Adc - max.
Ω - max.
Ω - min.
pF - typ.
°C
Current
Switching
Carry
2
Resistance
Capacitance
Temperature
Contact, Initial
Insulation
Contact
Operating
Product Characteristics
Operate Time
Release Time
Shock
6
6
5
5
ms - max.
ms - max.
11ms 1⁄2 sine
50-2000 Hz
G - max.
G - max.
1.0
1.0
100
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. Electrical Load Life Expectancy - Contact Littelfuse with voltage, current values along with type of load.
4. Breakdown Voltage - per MIL-STD-202, Method 301.
5. Operate (including bounce)/Release Time - per EIA/NARM RS-421-A, diode suppressed coil (Coil II).
6. Shock and Vibration - per EIA/NARM RS-421-A and MIL-STD-202.
Sensitivity Options (Using 57045 Actuator)
Select Option
Switch Type
Pull-In
AT Range
S
Activate Distance, D
mm (inch)
Average
Pull-In
AT Range
T
Activate Distance, D
mm (inch)
Average
Pull-In
AT Range
U
Activate Distance, D
mm (inch)
Average
1
Normally Open
15-20
5.0 (.196)
20-25
4.3 (.170)
25-30
3.8 (.150)
Note:
Pull-In Range - Contact Littelfuse for narrower AT ranges available. These AT values are the before molding and modification AT of the 59045.
D
© 2016 Littelfuse
Revised: 03/04/16
Specifications are subject to change without notice.
littelfuse.com
Overmolded Reed Switches
Low Power > 59045
59045 Miniature PCB Mountable Reed Switch + 57045 Actuator
Part Numbering System
Switch:
59045 - 1 - X - 00 - 0
Actuator:
57045 - 000
Series
Switch Type
Sensitivity
S, T, or U
Series
Standard Actuator
000
Note: The 57045 Actuator is sold separately.
Product Marking
Switch:
Actuator:
59045-1-X-00-0
57045 - 000
Part Number
Part Number
Packaging
Packaging Option
Bulk
Packaging Specification
Bulk
Quantity
200/Box
MOQ = 1000pcs
Quantity and Packaging Code
N/A
Taping Width
N/A
© 2016 Littelfuse
Revised: 03/04/16
Specifications are subject to change without notice.
littelfuse.com
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