Crystal Units
AT-41 / AT-41CD2
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Features
A highly stable and reliable low-height crystal unit with a metallic package,
also suitable for surface mounting.
l
Compatible with surface mounting.
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Airtight metal package ensures high-reliability.
l
Taping package is for customer automatic loading operation.
l
AT-41CD2 meets the requirements for re-flow profiling using lead-free
solder.
For OA / AV
AT-41
AT-41CD2
Pb
Free
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Specifications
Item
Frequency Range
Overtone Order
Frequency Tolerance (25 ±3℃)
Temperature Characteristics
(with reference to +25°C)
Operating Temperature Range
Equivalent Series Resistance
Drive Level
Load Capacitance
16pF
Model
AT-41 / AT-41CD2
3.1375 to 36.864MHz
Fundamental
±20 × 10
−6
26.9 to 74.1MHz
3rd overtone
*1 Equivalent Series Resistance
Overtone
Frequency (MHz)
Order
(Range)
3 to 3.2
3.2 to 3.5
3.5 to 4
4 to 4.5
4.5 to 5
5 to 6
6 to 8
8 to 10
10 to 12
12 to 37
3rd overtone
*2 Drive Level
Overtone
Order
Fundamental
3rd overtone
26 to 35
35 to 48
48 to 75
Equivalent Series
Resistance max.[Ω]
400
200
150
120
100
80
70
60
50
40
140
100
80
Fundamental
±30 × 10
−6
−10 to +70℃
Refer to *1
Refer to *2 (Max: 1000μW)
Series resonance
The above specifications are standard for this NDK product.
Custom-made specifications such as load capacitance and
temperature characteristics are also available.
Please contact NDK sales with your enquiries.
Frequency (MHz) Drive Level
(Range)
(μW)
3 to 5
500
5 to 37
50
26 to 60
60 to 75
500
10
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How to Specify an Order
When ordering our products, specify them with an “Ordering Code” that consists of the following :
Model name - Frequency (Max : 9 digits) M - Number for specifying an order
Example AT-41-16.000M-LN-L-0005
If you have any queries concerning our standard frequencies and numbers for specifying orders, please contact our sales representatives or visit our homepage
(http://www.ndk.com/).
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Dimensions
AT-41
mm
AT-41CD2
3.7max
10.21max
mm
0 to 0.3max
3.5 to 20±1 3.5max
4.2±0.3
0.65±0.1
φ0.43
-0.03
4.88±0.2
+0.05
12.4 ±0.3
11.4 ±0.2
Reference land pattern
6.0
2.0
4.7 ±0.1
11.05max
4.65max
4.88±0.2
9.0
cu42_080418_AT-41_e1
NDK [ NIHON DEMPA KOGYO ]
