NDK NR-2C Crystal units for high precision industry Datasheet

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