Crystal Units AT-41 / AT-41CD2 For OA / AV n Features A highly stable and reliable low-height crystal unit with a metallic package, also suitable for surface mounting. lCompatible with surface mounting. lAirtight metal package ensures high-reliability. lTaping package is for customer automatic loading operation. lAT-41CD2 meets the requirements for re-flow profiling using lead-free solder. AT-41 AT-41CD2 Pb Free n Specifications Model Item AT-41 / AT-41CD2 3.1375 to 36.864MHz Frequency Range *1 Equivalent Series Resistance Overtone Frequency (MHz) Order (Range) 26.9 to 74.1MHz Fundamental Overtone Order 3rd overtone −6 Frequency Tolerance (25 ±3℃) ±20 × 10 Temperature Characteristics (with reference to +25°C) ±30 × 10−6 Operating Temperature Range −10 to +70℃ Fundamental Refer to *1 Equivalent Series Resistance Refer to *2 (Max: 1000μW) Drive Level Load Capacitance 16pF Series resonance 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. 3rd overtone *2 Drive Level Overtone Order Fundamental 3rd overtone Equivalent Series Resistance max.[Ω] 3 to 3.2 3.2 to 3.5 3.5 to 4 4 to 4.5 4.5 to 5 5 to 6 6 to 8 8 to 10 10 to 12 12 to 37 26 to 35 35 to 48 48 to 75 400 200 150 120 100 80 70 60 50 40 140 100 80 Frequency (MHz) Drive Level (Range) (μW) 3 to 5 500 5 to 37 50 26 to 60 500 60 to 75 10 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-41-16.000M-LN-L-0005 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-41 10.21max AT-41CD2 12.4 ±0.3 +0.05 0.65±0.1 φ0.43 -0.03 Reference land pattern 6.0 2.0 4.65max 11.4 ±0.2 4.7 ±0.1 4.88±0.2 11.05max mm 0 to 0.3max 4.2±0.3 3.5 to 20±1 3.5max 3.7max mm 4.88±0.2 9.0 cu42_080418_AT-41_e1