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