SHOULDER ELECTRONICS CO., LTD. CRYSTAL FILTER Data Sheet PRODUCT 产 品: CRYSTAL FILTER MODEL NO 型 号: UM-1-45M PREPARED 编 制: Fengyu CHECKED 审 核: York APPROVED 批 准: DATE Http://www.shoulder.cn 日 期: 2007-01-25 SHOULDER ELECTRONICS CO., LTD. 1. SCOPE This specification shall cover the characteristics of crystal filter with P/N: UM-1-45M15B 2. ELECTRICAL SPECIFICATION ITEM SPECIFICATION Holder type Central Frequency Number of pole Pass Bandwidth Stop Bandwidth Ripple Insertion Loss Terminating Impedance Operating temperature Aging in one year UM-1 45.0MHz 4 poles 3dB/ ±7.50KHz min. 40dB/ ±２２.0KHz max. 1.5dB max. 3.0dB max. 560Ω//3.0 pF//10pF -20~+70 ℃ 3ppm/year 3. DIMENSION UM-1 A B C D E F 7.8±0.2 3.0±0.2 7.8±0.2 12.5±1.0 Φ0.35±0.05 3.75±0.2