SMD Type Crystal Resonators
SMD-49, SMD-49TA/TB
Features
Surface mount type of AT-49 crystal resonators.
Highest reliability due to complete hermetic seal
with metal package.
Good for automatic mounting and reflow soldering.
SMD-49
Generic Specification
Type
Item
SMD-49
3.2∼70.0MHz
SMD-49TA
3.579∼
16.000MHz
SMD-49TB
16.000∼
70.000MHz
Frequency Range
Vibration Mode
Load Capacitance
Drive Level
SMD-49TA/TB
Fundamental, 3rd overtone
Series 12pF, 16pF, 20pF, 32pF（Fund.）
8pF, 10pF, 12pF, 16pF（3rd）
Fund : 10μW（300μW max.）
3rd : 50μW（1mW max.）
±50×10
-6
, ±100×10
-6
（at 25℃）
40∼300Ω
40∼100Ω
Frequency Tolerance
Series Resistance
Frequency Characteristics
±50×10
-6
, ±100×10
-6
／−10∼＋60℃(Ref. to 25℃)
over Temperature
Storage Temperature
Range
Aging
Packing Unit : SMD-49
1000pcs./reel
SMD-49TA/TB 2000pcs./reel
−30∼＋80℃
±5×10
-6
max.／year
Consult our sales representative for other
specifications or special specifications.
Dimensions[mm]
（1）
0.72min.
（3）
（2） 0.43±0.05
0.8±0.2
Internal Connections
〈Top View〉
（1）
11.0±0.5
（3）
11.4±0.5
（2）
（1）
4.2±0.3
（2）
2.8max.
（3）
2.5max.
4.6±0.4
Recommended Land Pattern [mm]
12.1±0.3
2
4.5
（1）SMD-49
（2）SMD-49TA
（3）SMD-49TB
4
4.5
4.9±0.2
15
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