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| Datasheet File OCR Text: |
| SHOULDER ELECTRONICS CO., LTD. CRYSTAL FILTER Data Sheet PRODUCT : CRYSTAL FILTER MODEL NO : UM-1-45M PREPARED : CHECKED : APPROVED : DATE : 2007-01-25 Fengyu York Http://www.shoulder.cn 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 Holder type Central Frequency Number of pole Pass Bandwidth Stop Bandwidth Ripple Insertion Loss Terminating Impedance Operating temperature Aging in one year SPECIFICATION UM-1 45.0MHz 4 poles 3dB/ A 7.50KHz min. 40dB/ A 22.0KHz max. 1.5dB max. 3.0dB max. 560| pF//10pF //3.0 -20~+70 ae 3ppm/year 3. DIMENSION A UM-1 7.8A 0.2 B 3.0A 0.2 C 7.8A 0.2 D 12.5A 1.0 E | 0.35A 0.05 F 3.75A 0.2 |
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