NR-2B_15 Datasheet, PDF (1/1 Pages) NIHON DEMPA KOGYO – Crystal Units For High Precision Industry

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