Crystal Units
NR-2C / NR-2B
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Features
A highly reliable crystal unit with outstanding frequency stability
and covering a broad frequency range.
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The product satisfies strict temperature characteristics standards,
is shock resistant and has excellent frequency reproducibility.
For High Precision Industry
NR-2C
NR-2B
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
*1 Equivalent Series Resistance (NR-2C)
Overtone
Order
Fundamental
3rd overtone
5th overtone
Frequency (MHz)
(Range)
10 to 25
45 to 95
80 to 150
Model
10 to 25MHz
Fundamental
NR-2C
45 to 95MHz
3rd overtone
80 to 150MHz
5th overtone
10 to 25MHz
Fundamental
NR-2B
25 to 75MHz
3rd overtone
50 to 100MHz
5th overtone
±10 × 10
−6
±5 × 10
−6
-10 to +60℃
Refer to *1
10μW (Max:1000μW)
12pF
Series resonance
12pF
Series resonance
Refer to *2
*2 Equivalent Series Resistance (NR-2B)
Equivalent Series
Resistance max.[Ω]
40
60
80
Overtone
Order
Fundamental
3rd overtone
5th overtone
Frequency (MHz)
(Range)
10 to 25
25 to 30
30 to 75
50 to 100
Equivalent Series
Resistance max.[Ω]
25
50
45
60
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.
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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 NR-2C-10.368M-STD-CMB-4
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
NR-2C
6.90±0.20
2.20±0.20
mm
NR-2B
6.90±0.20
2.20±0.20
mm
20min
6.00max
20min
8.00max
φ0.35 ±0.05
3.75 ±0.20
7.90max
3.20max
3.75 ±0.20
7.90max
φ0.35 ±0.05
3.20max
cu41_0418_NR-2C_e1
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