AT290-22-4 | DigiCamel IC Datasheet

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3AT SENSATA | Alldatasheet

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PDF pages: 17

Technical content

Features

Applications

KLIXON® hermetic snap–action position switches are ideal for extremely harsh and demanding environments as found in aircraft, military, aerospace, and aircraft engines applications. KLIXON ® precision hermetic position switches have been used for over 55 years in a wide range of applications. Our switches are found on virtually all commercial and military aircraft, as well as various space vehicles and satellites worldwide. Our design library has over 2,000 switch package designs which allow for “off-the-shelf” solutions to meet most application needs. Custom designs are also available if the customer’s application requires different form factors, or actuation methods. We offer a wide choice of precision position switches ideally suited for mission-critical applications that require accurate switching in extreme temperatures, high vibration and shock environments, or in the presence of typical aerospace fluids including but not limited to coolants, oils, hydraulic fluid, fuel, and de- icing fluids.

Qualified per MIL-PRF-8805, Enclosure Symbol 5
Hermetically sealed with dry nitrogen gas backfill
Proven snap-action switching, reliable performance and long life
Excellent shock and vibration resistance
Switching up to 4 amps
Optimal for low level circuits
Temperature range between -275°F and 450°F
Small, lightweight axis–symmetric design for robustness and reliability
Single and multiple pole designs available
Various mounting configurations for custom applications
Sealed and unsealed plunger options
Wide range of side plate designs for narrow width applications
PMA Approvals for various commercial aircraft
Customer approvals for space and military applications Precision hermetic position switches are sometimes referred to as:
Position switches
Aircraft switches
Miniature switches
Hermetic switches
Aerospace switches
Sensitive switches
Limit switches
Military switches
Switches

Copyright © 2019 Sensata Technologies, Inc. www.sensata.com SPECIFICATIONS AT 3AT 4AT 10AT Device Type Standard High Temperature Low Temperature High Amperage Maximum Actuating Force (STP) 20 oz 20 oz 28 oz 30 oz Minimum Release Force (STP) 4 oz 4 oz 1 oz 1 oz Maximum Pretravel 0.009” 0.009” 0.009” 0.009” Maximum Movement Differential 0.003” 0.003” 0.003” 0.003” Minimum Overtravel 0.002” 0.002” 0.002” 0.002” Overtravel Stop No No No No Maximum Force on Actuator 5 lb 5 lb 5 lb 5 lb Current Ratings in Amps (28VDC) Resistance 3 1 1 3 4 Inductive 1 ½ ½ 1 1 Lamp 1 ½ ½ 1 2 Minimum Life @ Rated Load 25K 50K 25K 25K 25K Minimum Mechanical Life Cycles 100K 100K 50K 50K Ambient Temperature Range -65°F to 275°F (-53.8°C to 135°C) -65°F to 450°F -275°F to 275°F -85°F to 275°F (-65°C to 135°C) Dielectric Strength Terminal to Case Terminal to Terminal

1000 VRMS

800 VRMS

500 VRMS

Max Leakage 1 x 10-8 Std. cc He/Sec @ 1 atmosphere differential Shock Resistance 200G, 6 ms sawtooth Vibration Resistance 65G, 10-2000Hz, .5DA or 65GTMS Insulation Resistance @ 500VDC 100 Megohms Voltage Drop @ 1 amp 0.04 0.12 0.04 0.04 SEAL (MIL-S-8805) Design Enclosure 5 Backfill Dry nitrogen with 10% helium Performance & Actuation Characteristics Chart NOTE FOR DRAWINGS Technical Terms 1. Because of restricted space we can only show a small percentage of our switch packages and dimensional drawings. Please contact the factory if you do not see the solution you need, or if you require more detailed envelope drawings. 2. Unless otherwise noted, standard leads are AWG #20 per MIL-W-22759/9. 3. All exposed materials on packaged designs are corrosion resistant steel with the exception of the side plates on Style 7 switches which are anodized aluminum alloy. 4. All hardware provided is corrosion resistant steel. Electrical Life The minimum number of cycles allowable for a switch under a specified combination of electrical load, actuation and environmental criteria. Usually specified for the maximum current and temperature rating of the switch. Mechanical Life The minimum number of cycles allowable for a switch with no electrical load, and a specified combination of actuation and environmental criteria. Contact Erosion A general loss of material from one or both surfaces of a pair of mating contacts. This is as a result of switching electrical loads.

Copyright © 2019 Sensata Technologies, Inc. www.sensata.com Technical Terms (cont.) Pole The number of completely separate circuits contained in a switch. A single pole switch can control only one circuit at a time. A double pole switch can control two independent circuits at the same time. Throw The number of circuits that each individual pole of a switch can control. The number of throws is completely independent of the number of poles. Contact Resistance The resistance offered to flow of current during its passage between electrical contacts. For practical reasons, lead and terminal resistance may be included in the actual measurement, as well as the contact resistance proper. Termination Leads or Connectors Sensata uses 20 gauge wire per MIL-W-22759 as shown below. Alternative gauges, MIL specs and color coding schemes are available upon request. Sensata will also provide switches with connectors to meet customer application needs. Dielectric Withstanding Voltage * The maximum voltage that a switch can withstand between specified points without leakage current exceeding a specified value. Insulation Resistance * The resistance offered by the insulating members of a component part to a direct voltage tending to produce a leakage current through or on the surface of these members. Insulation resistance should not be considered the equivalent of dielectric withstanding voltage. Loads Three types of loads associated with electrical switches are: resistive, inductive and lamp. Of concern when discussing loads are their effect on the switch contacts. Resistive Purely resistive loads are the easiest to switch. Contact life is maximized when switching purely resistive loads because contact erosion is minimized. Inductive Inductive loads result in the most contact erosion. This is due to the tendency of the current to continue traveling across the contact while opening, causing arcing. * Insulation resistance measurements should not be considered to be equivalent to dielectric withstand voltage tests. A clear, dry insulation may have a high insulation resistance and yet possess a mechanical fault that would cause failure in the dielectric withstand voltage test. Conversely, a dirty, deteriorated insulation with a low insulation resistance might not break down under a high potential of a DWV test.

Copyright © 2019 Sensata Technologies, Inc. www.sensata.com Technical Terms (cont.) Lamp In-rush current is the condition that result in the lamp load rating. The resistance rating of a lamp is normally specified when the lamp is hot. However, when the lamp is cold the resistance is low. This in-rush current can be 10 times the normal current, resulting in welding of the contacts. Low Level Circuit Low level circuits are classified in MIL-8805 as those with resistive loads less than 10mA at 30mV. The use of gold plated contacts and the hermetic enclosure of the switch contacts afford an ideal environment for switching low level loads. Pretravel The distance the button moves from the free position to the actuation point. Free Position The position of the button when there is no external force other than gravity applied to it. Actuation Point The position of the button at which the movable contact snaps from the normally closed contact position to the normally open contact position. Release Position The position of the button at which the movable contact snaps from the normally open contact position to the normally closed contact position. Maximum Overtravel Position The position of the button when the positive overtravel stop is reached. Further overtravel would damage the switch. Actuation Force The force which must be applied to the button to cause the movable contact to snap from the normally closed contact position to the normally open contact position. Release Force The level to which the force on the button must be reduced to allow the contacts to snap from the normally open position to the normally closed contact position. Overtravel The distance that the button can travel beyond the actuation point. Movement Differential The distance the button moves from the actuation point to the release point.

Rev:06/04/19 www.sensata.com Copyright © 2019 Sensata Technologies, Inc. Sensata Technologies, Inc. (“Sensata”) data sheets are solely intended to assist designers (“Buyers”) who are developing systems that incorporate Sensata products (also referred to herein as “components”). Buyer understands and agrees that Buyer remains responsible for using its independent analysis, evaluation and judgment in designing Buyer’s systems and products. Sensata data sheets have been created using standard laboratory conditions and engineering practices. Sensata has not conducted any testing other than that specifically described in the published documentation for a particular data sheet. Sensata may make corrections, enhancements, improvements and other changes to its data sheets or components without notice. Buyers are authorized to use Sensata data sheets with the Sensata component(s) identified in each particular data sheet. HOWEVER, NO OTHER LICENSE, EXPRESS OR IMPLIED, BY ESTOPPEL OR OTHERWISE TO ANY OTHER SENSATA INTELLECTUAL PROPERTY RIGHT, AND NO LICENSE TO ANY THIRD PARTY TECHNOLOGY OR INTELLECTUAL PROPERTY RIGHT, IS GRANTED HEREIN. SENSATA DATA SHEETS ARE PROVIDED “AS IS”. SENSATA MAKES NO WARRANTIES OR REPRESENTATIONS WITH REGARD TO THE DATA SHEETS OR USE OF THE DATA SHEETS, EXPRESS, IMPLIED OR STATUTORY , INCLUDING ACCURACY OR COMPLETENESS. SENSATA DISCLAIMS ANY WARRANTY OF TITLE AND ANY IMPLIED WARRANTIES OF MERCHANTABILITY , FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT, QUIET POSSESSION, AND NON-INFRINGEMENT OF ANY THIRD PARTY INTELLECTUAL PROPERTY RIGHTS WITH REGARD TO SENSATA DATA SHEETS OR USE THEREOF. All products are sold subject to Sensata’s terms and conditions of sale supplied at www.sensata.com SENSATA ASSUMES NO LIABILITY FOR APPLICATIONS ASSISTANCE OR THE DESIGN OF BUYERS’ PRODUCTS. BUYER ACKNOWLEDGES AND AGREES THAT IT IS SOLELY RESPONSIBLE FOR COMPLIANCE WITH ALL LEGAL, REGULATORY AND SAFETY-RELATED REQUIREMENTS CONCERNING ITS PRODUCTS, AND ANY USE OF SENSATA COMPONENTS IN ITS APPLICATIONS, NOTWITHSTANDING ANY APPLICATIONS-RELATED INFORMATION OR SUPPORT THAT MAY BE PROVIDED BY SENSATA. Mailing Address: Sensata Technologies, Inc., 529 Pleasant Street, Attleboro, MA 02703, USA. Americas +1 (508)-236-3287 klixon@sensata.com AUTHORIZED DISTRIBUTORS Flame Enterprises Bob Correa, Director of Product Management +1 (240) 236-9802 bcorrea@flamecorp.com info@flamecorp.com | Web Tel: 1-800-854-2255 or 1-818- 700-2905 Fax: 1-818-407-5080 Peerless Electronics Steve Gunther, National Sales Manager +1 (516) 594-3509 sgunther@peerlesselectronics. com nysales@peerlesselectronics. com | Web Tel: 1-800-285-2121 Fax: 1-800-222-8096 Europe, Middle East & Africa Flame Enterprises Bob Correa, Director of Product Management +1 (240) 236-9802 bcorrea@flamecorp.com info@flamecorp.com | Web Tel: 1-800-854-2255 or 1-818- 700-2905 Fax: 1-818-407-5080 CONTACT US WARNINGS HAZARD OF ELECTRIC SHOCK, EXPLOSION OR ARC FLASH

Disconnect all power before installing or working with this equipment
Verify all connections and replace all covers before turning on power Failure to follow these instructions will result in death or serious injury

Product Information

AT290-22-4 specifications and overview.

Summary

SNAP ACTION PRECISION POSITION SWITCHES (RATED 4 AMPS @ 28VDC) Rev:06/04/19

Description

SNAP ACTION PRECISION POSITION SWITCHES (RATED 4 AMPS @ 28VDC) Rev:06/04/19

Source title AT290-22-4 Datasheet(PDF) - Sensata Technologies, Inc.

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