toll free: (888) sei-seis www.seielect.com email: marketing@seielect.com 21 (888) 734-7347 up series ? ultra precision metal film resistors * lesser of pr or maximum working voltage. features ? highest stability metal film available ? tcrs as low as 5 ppm ? tolerances to 0.01% available ? matched sets available ? low noise ? higher power options available ? non-standard resistance values available ? 1 watt available, contact factory electrical specifications type (up) power rating (watts) @ 70c maximum working voltage* maximum pulse voltage 1/4 0.25w 350 500 1/2 0.5w 350 500 tolerance / tcr combinations electrical (operating temperat ure range -20c to +85c) tcr code tcr up 1/4 up 1/2 0.01?0.02% 0.05% 0.1?0.25% 0.5?1% 0.01?0.02% 0.05% 0.1?0.25% 0.5?1% ta 5 51.1 ? ?294k 10 ? ?1m 10 ? ?499k 1 ? ?499k 51.1 ? ?499k 10 ? ?499k 10 ? ?499k 1 ? ?499k tb 10 51.1 ? ?294k 10 ? ?1m 10 ? ?1m 1 ? ?1m 51.1 ? ?499k 10 ? ?499k 10 ? ?1m 1 ? ?1m td 15 51.1 ? ?294k 10 ? ?1m 5.11 ? ?1m 1 ? ?1m 51.1 ? ?499k 10 ? ?499k 5.11 ? ?1m 1 ? ?1m t9 25 51.1 ? ?294k 10 ? ?1m 5.11 ? ?2m 1 ? ?2m 51.1 ? ?499k 10 ? ?499k 5.11 ? ?2m 1 ? ?2m t2 50 51.1 ? ?294k 10 ? ?1m 5.11 ? ?2m 1 ? ?3.92m 51.1 ? ?499k 10 ? ?499k 5.11 ? ?2m 1 ? ?3.92m how to order up 1/4 t 1 4 . 7 5 k 1 % r sei type code tcr nominal resistance tolerance packaging code tcr tolerance values code description pkg qty 1/4 t2 = 50ppm 0.01% e192 r paper 5,000 1/2 t9 = 25ppm 0.02% a bulk 1,000 td = 15ppm 0.05% tb = 10ppm 0.1% ta = 5ppm 0.25% 0.5% 1%
toll free: (888) sei-seis www.seielect.com email: marketing@seielect.com up series ? ultra precis ion metal film resistors 22 (888) 734-7347 mechanical specifications inches mm type (up) a body length b body width c lead length d lead diameter 1/4 0.28 max 7.2 max 0.10 max 2.5 max 1.18 min 30.0 min 0.024 0.002 0.61 0.05 1/2 0.39 max 10.0 max 0.145 max 3.70 max 1.18 min 30.0 min 0.024 0.002 0.61 0.05 performance characteristics environmental maximum typical load at commercial rating: 1000 hours at 70c ? r % 0.30 0.10 load at cecc rating: 1000 hours at 70c ? r % 0.30 0.05 dry heat: 1000 hours at 155c ? r % 1.00 0.15 shelf life: 12 months at room temperature ? r % 0.10 0.03 short term overload ? r % 0.10 0.02 climatic ? r % 0.30 0.10 climatic category 55/155/56 long term damp heat ? r % 0.50 0.10 temperature rapid change ? r % 0.20 0.05 resistance to solder heat ? r % 0.06 0.03 vibration and bump ? r % 0.06 0.02 noise (in a decade of frequency) v/v 1.00 0.10
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