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    • UM-5 Crystal Filter

    产品介绍
    2 Pole Specification
    Part Number
    Nominal Frequency
    Pass Band Width
    Stop Band Width
    Ripple
    Insertion Loss
    Terminal Impedance
    Operating Temp. Range
    (MHz)
    (dB)
    (KHz)
    (dB)
    (KHz)
    (dB)
    (dB)
    (Ohm/Pf)
    (℃)
    21M7A
    21.400
    3
    ±3.75
    18
    ±14.0
    0.5
    1.5
    850//7.0
    -20TO+70
    21M12A
    21.400
    3
    ±6.0
    15
    ±20.0
    0.5
    1.5
    1200//2.5
    -20TO+70
    21M15A
    21.400
    3
    ±7.5
    18
    ±25.0
    0.5
    1.5
    1500//3.0
    -20TO+70
    21M30A
    21.400
    3
    ±15
    15
    ±45.0
    0.5
    1.5
    3000//0.5
    -20TO+70
    21T7A
    21.700
    3
    ±3.75
    18
    ±14.0
    0.5
    1.5
    850//5.0
    -20TO+70
    21T12A
    21.700
    3
    ±6.0
    15
    ±20.0
    0.5
    1.5
    1200//2.5
    -20TO+70
    21T15A
    21.700
    3
    ±7.5
    18
    ±25.0
    0.5
    1.5
    1500//3.0
    -20TO+70
    21T30A
    21.700
    3
    ±15
    15
    ±45.0
    0.5
    1.5
    3000//0.5
    -20TO+70
    4 Pole Specification
    Part Number
    Nominal Frequency
    Pass Band Width
    Stop Band Width
    Ripple
    Insertion Loss
    Terminal Impedance
    Operating Temp. Range
    (MHz)
    (db)
    (KHz)
    (db)
    (KHz)
    (db)
    (db)
    (omh/Pf)
    (℃)
    21M7B
    21.400
    3
    ±3.75
    40
    ±14.0
    1
    2
    850//5//16
    -20TO+70
    21M12B
    21.400
    3
    ±6.0
    40
    ±20.0
    1
    2
    1200//2.5//10.5
    -20TO+70
    21M15B
    21.400
    3
    ±7.5
    40
    ±25.0
    1
    2
    1500//2//8
    -20TO+70
    21M30B
    21.400
    3
    ±15
    40
    ±50.0
    1
    2
    3300//0.5//3
    -20TO+70
    21T7B
    21.700
    3
    ±3.75
    40
    ±14.0
    1
    2
    850//5//16
    -20TO+70
    21T12B
    21.700
    3
    ±6.0
    40
    ±20.0
    1
    2
    1200//2.5//10.5
    -20TO+70
    21T15B
    21.700
    3
    ±7.5
    40
    ±25.0
    1
    2
    1500//2//8
    -20TO+70
    21T30B
    21.700
    3
    ±15
    40
    ±50.0
    1
    2
    3300//0.5//3
    -20TO+70


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