Crystal Units
cu52_110916_NR-2C_e
NR-2C / NR-2B For High Precision Industry
NR-2C NR-2B
Item Model NR-2C NR-2B
Nominal frequency 10 to 25 MHz 45 to 95 MHz 80 to 150 MHz 10 to 30 MHz 25 to 75 MHz 50 to 100 MHz
Overtone order Fundamental 3rd overtone 5th overtone Fundamental 3rd overtone 5th overtone
Frequency tolerance (25 ±3 °C) ±10 × 10−6
Frequency versus temperature
characteristics (with reference to +25 °C) ±5 × 10−6
Operating temperature range −10 to +60 °C
Storage temperature range −40 to +85 °C
Equivalent series resistance Refer to *1 Refer to *2
Level of drive 10 μW (Max. 100 μW)
Load capacitance 12 pF Series resonance 12 pF Series resonance
■ Specications
A highly reliable crystal unit with outstanding frequency stability
and covering a broad frequency range.
● The product satises strict temperature characteristics standards,
is shock resistant and has excellent frequency reproducibility.
■ Features
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/).
■ How to Specify an Order
mm
NR-2C
6.90r0.20
2.20r0.20
6.00max
20min
7.90max
φ0.35r0.05
3.20max
3.75 r0.20
■ Dimensions
*1 Equivalent Series Resistance(NR-2C)
Overtone Order
Nominal frequency
(MHz)
Equivalent Series
Resistance max. [Ω]
Fundamental
10 to 25 40
3rd overtone
45 to 95 60
5th overtone
80 to 150 80
*2 Equivalent Series Resistance(NR-2B)
Overtone Order
Nominal frequency
(MHz)
Equivalent Series
Resistance max. [Ω]
Fundamental
10 to 30 25
3rd overtone
25 to 30 50
30 to 75 45
5th overtone
50 to 100 60
mm
NR-2B
6.90r0.20 2.20r0.20
8.00max20min
3.75 r0.20
7.90max
3.20max
φ0.35r0.05
The above specications are standard for this NDK product.
Custom-made specications such as load capacitance and temperature characteristics are also available. Please contact NDK sales with your enquiries.