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| LP49, LP24, & LP21 CRYSTALS IN HC-49/S THRU-HOLE PACKAGE (LP49: 3.5 mm high; LP24: 2.5 mm high; LP21: 2.1mm high) STANDARD SPECIFICATIONS: Frequency Range Oscillation Modes Calibration Frequency Tolerance at 25 C Frequency Stability over Operating Temperature Range Operating Temperature Range Load Capacitance Equivalent Series Resistance (ESR) Drive Level Aging at 25 C Shunt Capacitance Pullability Packaging 3.180 MHz - 72.000 MHz (Consult factory for specific available frequencies) fundamental fundamental 3rd overtone (AT-cut) (BT-cut) (AT-cut) 3.180 - 30.000 MHz 24.001 - 47.000 MHz 27.000 - 72.000 MHz 50 PPM is standard, but tighter tolerances also available for certain frequencies. 50 PPM is standard, but tighter tolerances also available for certain operating temperature ranges. 0 - 70C is standard, but can be extended to -40 - +85C for certain frequencies (just add ` E' after model number). 10 pF - pF ( pF means Series Resonance). To be specified by customer. See table on next page. 50W is standard, but customer may specify different drive level 5 PPM per year 7 pF maximum May be specified by customer in terms of frequency shift required over a certain range of load capacitance, (e.g.+100 PPM from CL=12 to CL=18 pF) This requirement may be expressed also in terms of motional capacitance in fanto-Farad (fF). Bulk (100 per bag, 2000 per box) PART NUMBERING GUIDE: n The Pletronics part number for an LP crystal consists of the following 4 elements: 1. 2. Model Number: LP49, LP24, or LP21 Load Capacitance: When the load required is pF, that is, the calibration is at series resonance: LP49-SR, LP24-SR, or LP21-SR; When the load required is XX pF: LP49-XX, LP24-XX, or LP21-XX. 3. Optional 3rd Lead from the Base (Case Grounded): 3LP49 Frequency of Operation in MHz 4. EXAMPLES: LP49-SR-10.000 MHz; LP24-18-10.000 MHz; 3LP49-20-10.000 MHz n When customer's requirements are non-standard, a special engineering part number will be assigned. Telephone: (425) 776-1880, Fax: (425) 776-2760, e-mail: ple-sales@pletronics.com X2A LP49, LP24, & LP21 CRYSTALS STANDARD EQUIVALENT SERIES RESISTANCE VALUES: Oscillation Mode Fundamental Mode (AT-cut) Frequency Range 3.180 - 7.000 MHz 7.001 - 15.999 MHz 16.000 - 25.000 MHz 25.001 - 30.000 MHz 24.001 - 36.000 MHz 36.001 - 47.000 MHz 27.000 - 56.000 MHz 56.001 - 72.000 MHz ESR ** 130 ohms maximum 50 ohms maximum 40 ohms maximum 40 ohms maximum 50 ohms maximum 100 ohms maximum 100 ohms maximum 100 ohms maximum Fundamental Mode (BT-cut) 3rd Overtone Mode (AT-cut) ** ESR values lower than indicated may be available. Please contact factory for lower ESR values. PACKAGE OUTLINE (NOT TO SCALE): INCHES (MILLIMETERS) Max Height (H) LP49 LP24 LP21 .140 (3.56) .100 (2.5) .082 (2.1) January 2000 X2B Pletronics Inc., 19013 36th Ave. W., Suite H, Lynnwood, WA 98036-5761 USA |
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