designing and manufacturing innovative frequency control devices since 1927 monitor products? sm37, sm38 and sm39 are miniature crystals in highly reliable packages specifically designed for surface mount applications. hermetically-sealed construction ensures long-term stability and aging characteristics. miniature, surface mount watch crystals sm37 m sm38 m sm39 electrical specifications nominal frequency 32.768 khz calibration tolerance ! 20 ppm @ 25 1 c temperature stability parabolic coefficient -0.04 max ppm/( ? 1 c) 2 max series resistance 50.0 k ? max load capacitance 12.5 pf typical, 6pf to infinity available motional capacitance .003 ff typical shunt capacitance 1.35 pf typical drive level 1 ? w max quality factor 50,000 min operating temperature -40 to 85 1 c aging (1st year) ! 3 ppm max, 25 1 c ! 3 1 c applications m systems clock m communication equipment m computer applications m disk drives m cameras m measuring instruments features m ideal for use with high- density circuit boards m surface mount m plastic package m reflow solderable m tape and reel units : mm units : mm packaging: tape & reel (3000 pcs/reel) or bulk (< 3000 pcs) sm39 sm37 packaging: tape & reel (2000 pcs/reel) or bulk (< 2000 pcs) sm38 packaging: tape & reel (2000 pcs/reel) or bulk (< 2000 pcs) monitor products has a proven track record as a pioneer manufacturer in the frequency control market. if our extensive selection of standard and engineered crystals and oscillators does not meet your spec, we will work with you towards a customized solution. 502 via del monte, oceanside, ca 92054 tel: 760.433.4510 fax: 760.434.0255 monitor products company inc reserves the right to make changes to its products and product specifications without notice. no liability is assumed as a result of their use or application. 02-19-03
sm37 m sm38 m sm39 sm37l1c5a @ 32.768 khz = environmental performance specifications operating temperature range -40 1 c~85 1 c storage temperature range -55 1 c~125 1 c vibration mil-std-202 method 35g, 50 to 2000 hz shock mil-std-202 method 213b test cond e, 1000g, 1/2 sine wave humidity 85% rh, 85 1 c, 48 hours hermetic seal leak rate 2 x 10 -8 atm-cm 3 /sec max (inner package only) reflow solderability 260 1 c, 10 secs max solderability mil-std-202 method 208e insulation resistance 500 m ? min @ 100 vdc packaging tape & reel (sm37 & sm38= 2000pcs/reel; sm39 = 3000pcs/reel) or bulk sm38l1b5a @ 32.768 khz = sm39l1c7e @ 32.768 khz = l c l = 12.5pf* p = 6.0pf x = cust spec correlation mode frequency tolerance sample part numbers : sm38 sm39 series sm37 sm38 sm39 5 1 1 7 temperature range 3 = -20 1 c ~ 70 1 c 5 = -40 1 c ~ 85 1 c 7 = -10 1 c ~ 60 1 c* a e packaging a = bulk sm37/sm38: <2000 pcs sm39:<3000 pcs e = tape & reel* sm37/sm38: 2000 pcs/reel sm39: 3000 pcs/reel 32.768 32.768 frequency (khz) b 1 = fundamental* b = 100ppm* c = 50ppm d = 30ppm h = 20ppm * standard call factory for additional options. use full descriptive part number when ordering. parts will be marked with series and frequency only. part numbering key l sm37 7 1 a 32.768 c l tape dimensions reel dimensions units : mm a b c d e f g h qty sm37 sm38 1.5 8.0 4.0 16.0 1.75 7.5 3.9 11.0 2000 /reel sm39 1.5 8.0 4.0 16.0 1.75 7.5 2.7 8.7 3000 /reel 502 via del monte, oceanside, ca 92054 tel: 760.433.4510 fax: 760.434.0255 monitor products company inc reserves the right to make changes to its products and product specifications without notice. no liability is assumed as a result of their use or application. 02-19-03
|
