Features Contact type: contact spring Variety of lever lengths Additional models and versions available 1543 - Push Switch Characteristics Product Dimensions Switch Travel.....................0.6 to 0.8 mm 1543-300 1543-650 Actuating Force....................0.8 to 2.4 N Bounce Time ....................45 sec. max. Switch Function ........1 pole push switch Switch Rating .......................24 V/0.01 A without inductive load L 0.2 L 0.2 (L .008) (L .008) Temperature Range......-25 C to +70 C Switch Life .........................50,000 clicks How to Order 7.3 +0/-0.1 (.287 +0/-.004) 7.3 +0/-0.1 1543 - 300 - 113 (.287 +0/-.004) Model Type 1543 Terminal & Lever Style 1.0 1.6 0.5 300 (.039) (.063) (.020) 650 DIA. 5.0 Other versions available upon request. (.197) 0.5 Lever Length (.020) 5.0 113 = 11.3 mm (.197) 4.1 +0/-0.04 130 = 13.0 mm (.161 +0/-.002) 135 = 13.5 mm 7.8 149 = 14.9 mm (.307) 185 = 18.5 mm 200 = 20.0 mm 4.1 +0/-0.04 Other lengths available upon request. (.161 +0/-.002) Other versions available upon request. 7.5 (.295) 1.1 +0/-0.1 (.043 +0/-.004) 9.1 (.358) 2.0 (.079) Asia-Pacific: 4.3 Tel: +886-2 2562-4117 (.169) Fax: +886-2 2562-4116 Europe: 1.1 +0/-0.1 Tel: +41-41 768 5555 1543-305: (.043 +0/-.004) 3.0 +0/-0.2 Fax: +41-41 768 5510 4.0 (.118 +0/-.008) (.157) The Americas: 9.8 +0/-0.1 7.8 1543-300/301/302: Tel: +1-951 781-5500 (.386 +0/-.004) 4.2 +0/-0.2 (.307) Fax: +1-951 781-5700 (.165 +0/-.008) www.bourns.com REV. 06/08 9.8 +0/-0.1 9.8 +0/-0.1 (.386 +0/-.004) (.386 +0/-.004) WARNING Cancer and Reproductive Harm - www.P65Warnings.ca.gov 9.8 +0/-0.1 * RoHS Directive 2002/95/EC Jan. 27, 2003 including Annex. (.386 +0/-.004) Specications are subject to change without notice. Users should verify actual device performance in their specic applications. The products described herein and this document are subject to specic legal disclaimers as set forth on MM the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf DIMENSIONS ARE: (INCHES) *RoHS COMPLIANT Legal Disclaimer Notice This legal disclaimer applies to purchasers and users of Bourns products manufactured by or on behalf of Bourns, Inc. and )V Y UZ P Z HSPH LZ JVSSLJ P LS Unless otherwise expressly indicated in writing, Bourns products and data sheets relating thereto are subject to change P OV UV PJL <ZLYZ ZOV SK JOLJR MVY HUK VI HPU OL SH LZ Y LU LSL HU PUMVYTH PVU HUK LYPM OH Z JO PUMVYTH PVU PZ J YY and complete before placing orders for Bourns products. The characteristics and parameters of a Bourns product set forth in its data sheet are based on laboratory conditions, and statements regarding the suitability of products for certain types of applications are based on Bourns knowledge of typical requirements in generic applications. The characteristics and parameters of a Bourns VK J PU H ZLY HWWSPJH PVU TH HY WY VT OL KH H ZOLL JOHYHJ LYPZ PJZ HUK WHYHTL LYZ K L V P MY OL JVTIPUH PVU VM OL )V Y UZ product with other components VUTLU VM OL ZLY Z HWWSPJH PVU VY PP OL LU PY PU OL ZLY HWWSPJH PVU P ZLSM OL JOHYHJ LYPZ PJZ HUK WHYHTL LYZ VM H )V Y UZ LU HWWSPJH PVUZ HUK HJ H VK J HSZV JHU HUK KV HY PU KPLY WY S WLYMVYTHUJL TH HY V LY PTL <ZLYZ ZOV SK HS H Z LYPM the actual performance of the Bourns VK J PU OLPY ZWLJPJ KL PJLZ HUK HWWSPJH PVUZ HUK THRL O WY LPY V U PUKLWLUKLU NPU V KLZ KPUN OL HTV U VM HKKP PVUHS LZ THY LNHY Q KNTLU Z Y PNU PU V OLPY KL PJL VY HWWSPJH PVU V JVTWLUZH L MVY LHS VYSK JVUKP PVUZ LUJLZ IL LLU SHIVYH VY HUK Y KPLY <USLZZ )V Y UZ OHZ L WSPJP S KLZPNUH LK HU PUKP PK HS )V Y UZ product as meeting the requirements of a particular industry K L N 0:6 : VY H WHY PJ SHY X HSPJH PVU L N Z HUKHY LZWVUZPISL MVY HU LJVNUPaLK )V Y UZ PZ UV Y <3 SPZ LK VY Y L VM HU PUKP PK HS )V Y UZ MHPS Y K VY LTLU Z VM Z JO PUK Z Y Z HUKHY LX PY VK J V TLL OL Y WY WHY PJ SHY X HSPJH PVU <ZLYZ of Bourns products are responsible for ensuring compliance with safety-related requirements and standards applicable to OLPY KL PJLZ VY HWWSPJH PVUZ Bourns LJVTTLUKLK H OVYPaLK VY PU LUKLK MVY ZL P L UV Y VK J Z HY WY SPMLZH PUN SPML JYP PJHS VY SPML Z Z HPUPUN U U JSLHY L VY TH L MHPS Y HWWSPJH PVUZ UVY PU HU V OLY HWWSPJH PVUZ OLY VWL L WY KLH O VY ZL LY LZ S PU WLYZVUHS PUQ Y SM UJ PVU TH Y Y LZZS HUK ZWLJPJHSS HWWY VUTLU HS KHTHNL <USLZZ L WY VY LU PY LZLU H P LZ LWY V LK PU YP PUN I V H OVYPaLK )V Y UZ Y on a case-by-case basis, use of any Bourns VK J Z PU Z JO UH OVYPaLK HWWSPJH PVUZ TPNO UV IL ZHML H WY UK O Z PZ H Z ZVSL YPZR 3PML JYP PJHS HWWSPJH PVUZ PUJS KL KL PJ OL ZLY LZ PKLU PLK I OL < : -VVK HUK +Y N (KTPUPZ YH PVU HZ *SHZZ 000 KL PJLZ HUK NLULYHSS LX P HSLU JSHZZPJH PVUZ V ZPKL VM OL LZZS PKLU PLZ OVZL )V Y )V Y UZ UZ L WY L Z P HISL MVY ZL PU H VTV P L HWWS VK J Z OH HY K WY Z HUKHY PJH PVUZ VU Z JO VK J Z KH H ZOLL Z PU OL ZLJ PVU LU P SLK (WWSPJH PVUZ WY V LK PU YP PUN I V LZZS HUK ZWLJPJHSS HWWY <USLZZ L WY LZLU H P LZ VU H JHZL I JHZL IHZPZ ZL LWY H OVYPaLK )V Y UZ Y VM HU V OLY )V Y UZ VK J Z PU HU H VTV P L K WY Z HUKHY LJVTTLUKLK H O HWWSPJH PVU TPNO UV IL ZHML HUK O Z PZ UV Y Z ZVSL YPZR 0M )V Y UZ VYPaLK VY PU LUKLK HUK PZ H OL ZLY LZZS PKLU PLZ H Z I JH LNVY VM H VTV P L HWWSPJH PVU PU L WY VK J Z Z JO HZ PUMV HPUTLU K WY OL KH H ZOLL MVY P Z Z HUKHY L PL LK VY SPNO PUN Z JO PKLU PJH PVU TLHUZ OH )V Y UZ OHZ Y VK J HUK OHZ KL LYTPULK OH PM Z JO )V Y UZ K WY P Z Z HUKHY LK MVY WV LU PHS ZL PU H VTV P L VK J PZ JVUZPKLY K WY Z HUKHY HWWSPJH PVUZ P ZOV SK VUS IL ZLK PU Z JO Z I JH LNVY VM LUJL V )V Y UZ LMLY H VTV P L HWWSPJH PVUZ (U Y VK J PU OL KH H ZOLL HZ JVTWSPHU P O OL (,* 8 K WY Z HUKHY K Z HUKHY VY H VTV P L NYHKL KVLZ UV I P ZLSM TLHU OH )V Y UZ OHZ H VK J MVY ZL PU HU H VTV P L HWWSPJH PVU V LK Z JO WY WWY Bourns L UV LZ LK V JVTWS P O <UP LK : H LZ VK J Z HY K WY Z HUKHY KZ NLULYHSS PH PVU (KTPUPZ YH PVU Z HUKHY -LKLYHS ( NHUPaH PVU Z H VY HU V OLY NLULYHSS LX P HSLU NV LY UTLU HS VY LK MVY VK J Z KLZPNULK VY THU MHJ Y K HWWSPJHISL V WY UKHY LZZS PKLU P JYHM VY ZWHJL HWWSPJH PVUZ )V Y ZL PU HPYUZ L WY LZ )V Y UZ standard products that are suitable for use in aircraft VK J Z KH H ZOLL Z PU OL ZLJ VY ZWHJL HWWSPJH PVUZ VU Z JO WY LZZS HUK ZWLJPJHSS PVU LU P SLK (WWSPJH PVUZ <USLZZ L WY LZLU H P LZ VU LWY V LK PU YP PUN I V H OVYPaLK )V Y UZ Y HWWY H JHZL I JHZL IHZPZ ZL VM HU V OLY )V Y UZ standard JYHM VY ZWHJL HWWSPJH PVU TPNO UV IL ZHML H VK J PU HU HPY WY LJVTTLUKLK H OVYPaLK VY PU LUKLK HUK PZ H UK O Z PZ UV Y the users sole risk. 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