AT-51CD2-4.000-STD-PFV-2

Crystal Units AT-51 / AT-51CD2 n Features A highly stable and reliable crystal unit with a metallic package, also suitable for surface mounting. lWith many standard frequencies available, this unit is ideal for a variety of applications. lCompatible with surface mounting. lAirtight metal package ensures high-reliability. lAT-51CD2 meets the requirements for re-flow profiling using lead-free solder. For OA / AV AT-51 AT-51CD2 Pb Free n Specifications Item Frequency Range Overtone Order Frequency Tolerance (25 ±3℃) Temperature Characteristics (with reference to +25°C) Operating Temperature Range Equivalent Series Resistance Drive Level Load Capacitance 16pF Model AT-51 / AT-51CD2 3.1875 to 28.63636MHz Fundamental ±20 × 10−6 ±30 × 10−6 −10 to +70℃ Refer to *1 and *2 Refer to *3 (Max:1000μW) Series resonance 26 to 75MHz 3rd overtone 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 AT-51-4.000-STD-PFV-2 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 AT-51 10.1max 3.7max mm AT-51CD2 10.1max connections 0 to 0.3max mm 5.08 3.5 to 20±1 max 0.65±0.1 5.5±0.3 12.4 ±0.3 11.4 ±0.2 φ0.43+0.05 -0.03 4.88±0.20 11.05max 4.7 ±0.1 4.65max Reference land pattern 6.0 2.0 4.88±0.2 9.0 *1 Equivalent Series Resistance (Fundamental) Overtone Order Frequency (MHz) (Range) 3.1875 to 3.2 3.2 to 3.5 3.5 to 3.8 3.8 to 4.2 4.2 to 4.883 4.883 to 5.2 5.2 to 5.7 5.7 to 6.6 6.6 to 6.8 6.8 to 8.3 8.3 to 10.7 10.7 to 12.2 12.2 to 15 15 to 28.63636 *2 Equivalent Series Resistance (3rd overtone) Overtone Order 3rd overtone Frequency (MHz) (Range) 26 to 35 35 to 48 48 to 75 Equivalent Series Resistance max.[Ω] 400 200 140 120 100 80 70 60 55 50 45 40 35 30 Equivalent Series Resistance max.[Ω] 140 100 80 Fundamental *3 Drive Level Overtone Order Fundamental 3rd overtone Frequency (MHz) (Range) 3.1875 to 3.541 3.541 to 28.63636 26 to 60 60 to 75 Drive Level(μW) 500 50 500 10 cu39_071108_AT-51_e1