Replaces existing title page, pages 5, 6, 6a with pages 5 and 6, pages 17, 18, 19 with 17 to 20, inserts new pages i and ii und new standard sheets 47 to 51, dated February 1991.                          
                          
                          
                            
                                
                                    
                                        Số hiệu tiêu chuẩn
                                        IEC 60122-3 AMD 4*CEI 60122-3 AMD 4
                                     
                                    
                                        Tên tiêu chuẩn
                                        Quarz crystal units for frequency control and selection; part 3: standard outlines and lead connections; amendment 4
                                     
                                                                        
                                        Ngày phát hành
                                        1993-09-00
                                     
                                                                        
                                    
                                    
                                        Tiêu chuẩn liên quan
                                        
                                            IEC 60122-3 (1977)                                        
                                     
                                    
                                        Thay thế cho
                                        
                                            IEC/DIS 49(CO)223 (1991-05)                                        
                                     
                                    
                                    
                                    
                                        Từ khóa
                                        Contact * Electrical engineering * Frequency control * Frequency ranges * Frequency selection * Lead * Quartz * Quartz crystals