smd economy trimmers type 3142 series literature no. 1773128 issued: 08-05 dimensions are shown for reference purposes only. dimensions are in millimetres unless otherwise specified. specifications subject to change. www.tycoelectronics.com passives.tycoelectronics.com key features stable cermet element 0.15w power rating packed in standard 12mm tape suited to auto placement temperature range -25? to +85? excellent vacuum pickup on rotor height profile of just 2.4mm from board type 3142 series a range of small single turn trimmers suited to reflow soldering and attractively priced for volume application. the 3142 is supplied on 12mm tape on 180mm diameter reels. this product is long established, having an excellent reputation for long term stability. it is readily available from our network of distributors. characteristics - electrical characteristics - mechanical rotation torque: 2.0 - 20 mnm solder strength: 300mnm (3 directions) minimum mechanical rotation: 360 continuous characteristics - environmental operating temperature range: -25? to +85? humidity load life: 350 hrs 40? rh 90-95% ? r ?% load life: 1000 hrs @ 70? ? r ?% temperature cycle: ? r ?% -25? ~ +85? rotational life: 10 ?0% cycles resistance range: 100r to 1m resistance values: 1, 2 & 5 in each decade resistance tolerance: 25% resistance law: linear temperature coefficient of resistance: 250ppm/? operating voltage: 50 v dc maximum wiper current: 50ma maximum resolution: infinite contact resistance variation: <5% of nominal value power rating: 0.15 watts @ 70? electrical rotation: 270 ?0 end resistance: 5% maximum insulation resistance: 100m (250v dc) minimum when the ambient temperature exceeds 70?, reduce the rated power and current in accordance with the derating curve shown derating curve 0102030405060708085 ambient temperature (?) 100 80 60 40 20 0 rated power (%)
smd economy trimmers type 3142 series literature no. 1773128 issued: 08-05 dimensions are shown for reference purposes only. dimensions are in millimetres unless otherwise specified. specifications subject to change. www.tycoelectronics.com passives.tycoelectronics.com dimensions substrate layout cleaning conditions after soldering, use cleaning solvents such as chlorosen or dyefreon. storage to prevent damage to the electrode, be sure to observe the following cautions for storage. store in 40? maximum ambient temperature and 70? maximum ambient rh. for maximum possible shelf life do not disturb polythene sleeve until you are ready to use potentiometers. store where there are no harmful gases containing sulphur or chlorine. how to order 3142 w 102 p common part w - terminals 1&3 towards sprocket holes orientation the first two digits are significant figures of resistance value and the third denotes the number of zeros following. e.g. 100r: 101 1k: 102 10k: 103 100k: 104 1mo: 105 resistance value tolerance 3130 - 3 terminals p - 25 %
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