Crystal Units NX1255GB / NX1255GC For OA / AV n Features A surface-mount type crystal unit, ideal for OA (office automation) and AV (audiovisual) applications; compatible with low frequencies. (NX1255GB : 12.0 × 5.5 × 2.5mm typ.) lExcellent electrical performance, ideal for OA and AV applications. lExcellent environmental characteristics, including heat and shock resistance. lAn enriched assortment of frequencies from a low frequency of 3.5MHz. lLead-free. Meets the requirements for re-flow profiling using lead-free solder. lNX1255GC is a low-height type (1.8mm high), and ideal for PDA applications. n Specifications Model Item NX1255GB/NX1255GC Frequency Range 3.5 to 26.5MHz Overtone Order Fundamental ±50 × 10−6 Frequency Tolerance (25 ±3℃) ±50 × 10−6 Temperature Characteristics (with reference to +25°C) −10 to +70℃ Operating Temperature Range Refer to *1 Equivalent Series Resistance 50μW(Max:500μW) Drive Level 12pF Load Capacitance 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 NX1255GB-3.579545M-STD-CSA-1 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 *1 Equivalent Series Resistance mm Internal connections(TOP VIEW) 11.8±0.15 #3 5.5±0.15 #4 #1 Equivalent Series Resistance max.[Ω] 3.5 to 4 150 4 to 8 120 8 to 12 80 12 to 26.5 50 #2 H NX1255GB : H=2.5±0.15 NX1255GC : H=1.8 +0.2 -0.1 5.08 #2 4.4 #1 2.4 2.2 Reference land pattern 2.0 1.5 Frequency (MHz) (Range) #4 #3 5.08 cu37_071108_NX1255GB_e1