59040-3-T-02-A

**Reed Sensors** Firecracker > 59040 

## 59040 Press-Fit Firecracke ~~r Reed Sensor + 57040 Actuator~~ 

## **Description** 

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Sensor<br>Actuator<br>**----- End of picture text -----**<br>


The 59040 Press-Fit Firecracker Reed Sensor is a small, cylindrical reed sensor 31.0mm (1.22”) long that presses into a 9.5mm (.375”) diameter hole with a choice of normally open, normally closed or change-over contacts. It is capable of switching up to 200Vdc at 10W and is available with a range of sensitivity, cable length, plastic housing color (white, black, and wooden brown), and connector options. It has three crush ribs along the length of the capsule that allow a firm and fixed press-fit. It is well suited for position and limit sensing, security, level sensing applications. It functions best with the 57040 actuator. 

**Note: The 57040 Actuator is sold separately.** 

## **Features** 

## **Agency Approvals** 

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Agency Agency File Number<br>E61760<br>**----- End of picture text -----**<br>


Note: Contact Littelfuse for specific agency approval ratings. 

## **Dimensions** 

Dimensions in mm (inch) 

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Sensor<br>8.46±0.25<br>eo) = = (.333±.01) =<br>10.70 ±0.25<br>31.00±0.25 300<br>(.42 ±.01) f (1.22±.01) d (11.81)<br>Actuator<br>**----- End of picture text -----**<br>


   - Hermetically sealed contacts 

- Magnetically-operated press-fit proximity sensor 

   - Customer-defined sensitivity options available 

- Cylindrical capsule with retaining ribs 

   - Custom cable length and connector options available 

- Operates and mounts through nonferrous materials such as wood, plastic or aluminum 

- Press-fits into a standard drill size hole of 9.5mm (.375”) diameter 

## **Benefits** 

- Ribs on capsule compress when • Non-contact solution, aesthetically inserted into a mounting hole and more appealing than push-button or provide retaining force, allowing lever mechanical-type switches simple and secure press-fit • Ideal for battery-powered installation applications as the contacts do not 

- • Quick and easy press-fit installation draw power when in the nonactivated state 

- Quick and easy press-fit installation that requires no screws, brackets, nor glue. 

- nor glue. • Reed contacts last for millions of 

- • Well suited for usage in highoperating cycles under micromoisture and contaminated controller voltage and current logicenvironments level loads 

## **Applications** 

   - Appliances 

- Position and limit sensing 

- Security 

- Industrial 

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8.46±0.25<br>(.333±.01)<br>me<br>©) ET<br>10.70 ±0.25<br>31.00±0.25<br>(.42 ±.01)<br>(1.22±.01)<br>**----- End of picture text -----**<br>


Notes: 

1. The 59040 Sensor and 57040 Actuator are designed to fit into a drill size hole of 9.5mm (0.375") diameter. 

2. Not recommended to be mounted within ferrous metal materials. The activate distance will decrease significantly. 

© 2016 Littelfuse Revised: 03/02/16 Specifications are subject to change without notice. 

littelfuse.com 

**Reed Sensors** Firecracker > 59040 

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## 59040 Press-Fit Firecracke ~~r Reed Sensor + 57040 Actuator~~ 

## **Electrical Ratings** 

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Contact Type Normally Open Change Over Normally Closed<br>Switch Type 1 3 4<br>Contact Rating  [1] VA/Watt - max. 10 5 5<br>Switching  [2] Vdc - max. 200 175 175<br>Voltage  [4] Vac - max. 140 120 120<br>Breakdown  [3] Vdc - min. 250 200 200<br>Switching  [2] Adc - max. 0.5 0.25 0.25<br>Current  [4] Aac - max. 0.35 0.18 0.18<br>Carry Adc - max. 1.2 1.5 1.5<br>Contact, Initial  Ω - max. 0.2 0.2 0.2<br>Resistance  [5]<br>Insulation Ω - min. 10 [10] 10 [9] 10 [9]<br>Capacitance Contact pF - typ. 0.3 1.0  1.0<br>Temperature Operating °C -40 to +105 -40 to +105 -40 to +105<br>Product Characteristics<br>Operate Time  [6] ms - max. 1.0 3.0 3.0<br>Release Time  [6] ms - max. 1.0 3.0 3.0<br>Shock  [7] 11ms 1⁄2 sine G - max. 100 50 50<br>Vibration  [7] 50-2000 Hz G - max. 30 30 30<br>**----- End of picture text -----**<br>


## 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 11.81in 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, adding a special connector, or plastic housing color options, please contact Littelfuse. 

9. Custom sensitivity options and a normally open high-voltage switch option are available. 

## **Sensitivity Options (Using 57040 Actuator)** 

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Select Option S T U<br>Pull-In Activate Distance, D  Pull-In Activate Distance, D  Pull-In Activate Distance, D<br>Switch Type  mm (inch) mm (inch) mm (inch)<br>AT Range AT Range AT Range<br>Average Average Average<br>1 Normally Open 12-18 25.0 (.984) 17-23 21.2 (.834) 22-28 17.9 (.705)<br>3 Change Over 15-20 21.0 (.836) 20-25 18.4 (.725) 25-30 17.0 (.670)<br>4 Normally Closed 15-20 21.0 (.836) 20-25 18.4 (.725) 25-30 17.0 (.670)<br>**----- End of picture text -----**<br>


Note: 

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

2. The activate distance is an average value for the final sensor assembly. 

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3. Not recommended to be mounted within/near ferrous metal materials; if doing so, these<br>    activate distances will decrease significantly. Schematics Switch Type<br>Black<br>1<br>Actuator Sensor Black<br>Black<br>Blue 3<br>White<br>Black<br>4<br>D Black<br>**----- End of picture text -----**<br>


3. Not recommended to be mounted within/near ferrous metal materials; if doing so, these activate distances will decrease significantly. 

© 2016 Littelfuse Revised: 03/02/16 Specifications are subject to change without notice. 

littelfuse.com 

**Reed Sensors** Firecracker > 59040 

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## - 59040 Press Fit Firecracke ~~r Reed Sensor + 57040 Actuator~~ 

## **Cable Length Specification** 

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  Cable Type: 24 AWG PVC 105°C UL1430/UL1569<br>Cable Length<br>Select Option<br>mm (inch)<br> 02 300 (11.81)<br>**----- End of picture text -----**<br>


## **Termination Specification** 

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  Termination Options<br>Select  Description<br>Option (Two-wire versions illustrated)<br>A Tinned leads (6.4±0.76)mm<br>F Untinned leads (6.4±0.76)mm<br>E JST type XHP 2.5mm pitch<br>**----- End of picture text -----**<br>


## **Part Numbering System** 

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Sensor: 59040 - X - X - XX - X Actuator: 57040 - 000<br>Series Series<br>Switch Type Standard Actuator<br>  1, 3, or 4 000<br>Sensitivity Note: The 57040 Actuator is sold separately.<br>S, T, or U<br>Cable Length<br>02<br>Termination<br>A, F, or E<br>Product Marking<br>LITTELFUSE<br>59040 - X - X - XX - X<br>XXXX<br>Part Number<br>Date Code<br>(YYWW)<br>Packaging<br>Packaging Option Packaging Specification Quantity Quantity and Packaging Code Taping Width<br>Bulk Bulk 500 N/A N/A<br>**----- End of picture text -----**<br>


© 2016 Littelfuse Revised: 03/02/16 Specifications are subject to change without notice. 

littelfuse.com