- Все продукты
- /
- Crystals, Oscillators, Resonators
- /
- Oscillators
| Изображение | Тип | Марка | Объяснение | Установленная цена | Количество | RoHS | Factory Lead Time | Mount | Mounting Type | Package / Case | Surface Mount | Number of Pins | Duty Cycle - Max | Maximum Operating Temperature | Minimum Operating Temperature | RoHS | Supply Voltage-Max | Supply Voltage-Min | Usage Level | Operating Temperature | Packaging | Series | Size / Dimension | JESD-609 Code | Pbfree Code | Part Status | Moisture Sensitivity Level (MSL) | Number of Terminations | Termination | ECCN Code | Type | Terminal Finish | Max Operating Temperature | Min Operating Temperature | Additional Feature | HTS Code | Voltage - Supply | Terminal Position | Supply Voltage | Terminal Pitch | Depth | Current Rating | Frequency | Frequency Stability | Output | Termination Style | Function | Base Resonator | Current - Supply (Max) | Qualification Status | Physical Dimension | Operating Frequency | Operating Supply Voltage | Rise Time-Max | Fall Time-Max | Symmetry-Max | Lead Spacing | Power Supplies | Current - Supply (Disable) (Max) | Load Capacitance | Max Supply Current | Frequency Tolerance | Control Voltage-Max | Control Voltage-Min | Output Format | Height | Height Seated (Max) | Length | Width | Radiation Hardening | REACH SVHC | RoHS Status | Lead Free |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
![]() | Mfr. ТипAST3TQ53-T-30.720MHZ-5-SWAnlielectronics Тип | Abracon LLC |
XTAL OSC TCXO 30.7200MHZ SNWV
Сборник данных
Сравнение
| Min.:1 Mult.:1 | 15 Weeks | Surface Mount | Surface Mount | 4-SMD, No Lead | - | - | - | - | - | - | - | - | - | -40°C~85°C | Strip | AST3TQ53 | 0.197Lx0.126W 5.00mmx3.20mm | - | - | Active | 3 (168 Hours) | - | - | - | TCXO | - | - | - | BULK | - | 3.3V | - | 3.3V | - | - | - | 30.72MHz | ±50ppb | Clipped Sine Wave | - | - | Crystal | - | - | 5.0mm x 3.2mm x 2.0mm | 30.72MHz | - | - | - | - | - | - | - | - | 6mA | - | - | - | - | 2.1082mm | 0.083 2.10mm | - | - | - | - | RoHS Compliant | - | ||
| AST3TQ53-T-30.720MHZ-5-SW | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | Mfr. ТипAST3TQ53-V-30.720MHZ-5-CAnlielectronics Тип | Abracon LLC |
XTAL OSC VCTCXO 30.7200MHZ LVCMO
Сборник данных
Сравнение
| Min.:1 Mult.:1 | 15 Weeks | Surface Mount | Surface Mount | 4-SMD, No Lead | - | - | - | - | - | - | - | - | - | -40°C~85°C | Strip | AST3TQ53 | 0.197Lx0.126W 5.00mmx3.20mm | - | - | Active | 3 (168 Hours) | - | - | - | VCTCXO | - | - | - | BULK | - | 3.3V | - | 3.3V | - | - | - | 30.72MHz | ±50ppb | LVCMOS | - | - | Crystal | - | - | 5.0mm x 3.2mm x 2.0mm | 30.72MHz | - | 6ns | 6ns | 55/45% | - | - | - | - | 6mA | - | 2.5V | 0.5V | - | 2.1082mm | 0.083 2.10mm | - | - | - | - | RoHS Compliant | - | ||
| AST3TQ53-V-30.720MHZ-5-C | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | Mfr. ТипAOCJY4B-10.000MHZ-E-SWAnlielectronics Тип | Abracon LLC |
OCXO Oscillators 10MHz 12Volts 10ppb -20C 70C
Сборник данных
Сравнение
| Min.:1 Mult.:1 | 15 Weeks | Through Hole | Through Hole | 6-DIP (0.701, 17.80mm), 5 Leads | - | 4 | - | - | - | - | - | - | - | -20°C~70°C | Digi-Reel® | AOCJY4 | 1.421Lx1.071W 36.10mmx27.20mm | - | - | Active | 1 (Unlimited) | - | Radial | - | VCOCXO | - | 70°C | -20°C | - | - | 12V | - | - | - | - | - | 10MHz | ±10ppb | Sine Wave | - | - | Crystal | - | - | - | - | 12V | - | - | - | - | - | - | - | - | - | - | - | - | 13.0048mm | 0.512 13.00mm | 36.0934mm | 27.2034mm | No | - | RoHS Compliant | - | ||
| AOCJY4B-10.000MHZ-E-SW | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | Mfr. ТипASFL1-35.328MHZ-L-TAnlielectronics Тип | Abracon LLC |
OSC XO 35.328MHZ HCMOS TTL SMD
Сборник данных
Сравнение
| Min.:1 Mult.:1 | 11 Weeks | - | Surface Mount | 4-SMD, No Lead | YES | - | - | - | - | - | - | - | - | -40°C~85°C | Tape & Reel (TR) | ASFL1 | 0.197Lx0.126W 5.00mmx3.20mm | e4 | - | Active | 1 (Unlimited) | - | - | - | XO (Standard) | Gold (Au) - with Nickel (Ni) barrier | - | - | - | - | 3.3V | - | 3.3V | - | - | - | 35.328MHz | ±100ppm | HCMOS, TTL | - | Enable/Disable | Crystal | 45mA | - | 5.0mm x 3.2mm x 1.3mm | 35.328MHz | - | 7ns | 7ns | 40/60% | - | - | 10μA | - | - | - | - | - | - | - | 0.051 1.30mm | - | - | - | - | RoHS Compliant | - | ||
| ASFL1-35.328MHZ-L-T | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | Mfr. ТипASA2-6.140MHZ-L-T3Anlielectronics Тип | Abracon LLC |
XTAL OSC XO 6.1400MHZ HCMOS SMD
Сборник данных
Сравнение
| Min.:1 Mult.:1 | 13 Weeks | Surface Mount | Surface Mount | 4-SMD, No Lead | - | - | - | - | - | - | - | - | - | -40°C~85°C | Tape & Reel (TR) | ASA | 0.079Lx0.063W 2.00mmx1.60mm | - | yes | Active | 1 (Unlimited) | - | SMD/SMT | - | XO (Standard) | NOT SPECIFIED | - | - | - | - | 1.8V | - | - | - | - | - | 6.14MHz | ±50ppm | HCMOS | - | Enable/Disable | Crystal | - | - | - | - | 1.8V | - | - | - | - | - | - | 15pF | 5mA | - | - | - | - | 787.4μm | 0.031 0.80mm | - | - | - | - | RoHS Compliant | - | ||
| ASA2-6.140MHZ-L-T3 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | Mfr. ТипASA1-22.000MHZ-L-T3Anlielectronics Тип | Abracon LLC |
XTAL OSC XO 22.0000MHZ HCMOS SMD
Сборник данных
Сравнение
| Min.:1 Mult.:1 | 13 Weeks | Surface Mount | Surface Mount | 4-SMD, No Lead | - | - | - | - | - | - | - | - | - | -40°C~85°C | Tape & Reel (TR) | ASA | 0.079Lx0.063W 2.00mmx1.60mm | - | - | Active | 1 (Unlimited) | 4 | SMD/SMT | - | XO (Standard) | - | - | - | - | - | 2.5V | - | 2.5V | - | - | - | 22MHz | ±50ppm | HCMOS | - | Enable/Disable | Crystal | - | Not Qualified | - | 22MHz | 2.5V | - | - | - | - | - | - | 15pF | 10mA | - | - | - | - | 787.4μm | 0.031 0.80mm | - | - | - | - | RoHS Compliant | - | ||
| ASA1-22.000MHZ-L-T3 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | Mfr. ТипASA1-45.250MHZ-L-T3Anlielectronics Тип | Abracon LLC |
XTAL OSC XO 45.2500MHZ HCMOS SMD
Сборник данных
Сравнение
| Min.:1 Mult.:1 | 13 Weeks | Surface Mount | Surface Mount | 4-SMD, No Lead | - | - | - | - | - | - | - | - | - | -40°C~85°C | Tape & Reel (TR) | ASA | 0.079Lx0.063W 2.00mmx1.60mm | - | - | Active | 1 (Unlimited) | 4 | SMD/SMT | - | XO (Standard) | - | - | - | - | - | 2.5V | - | 2.5V | - | - | - | 45.25MHz | ±50ppm | HCMOS | - | Enable/Disable | Crystal | - | Not Qualified | - | 45.25MHz | 2.5V | - | - | - | - | - | - | 15pF | 10mA | - | - | - | - | 787.4μm | 0.031 0.80mm | - | - | - | - | RoHS Compliant | - | ||
| ASA1-45.250MHZ-L-T3 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | Mfr. ТипAST3TQ-V-25.000MHZ-50-C-T5Anlielectronics Тип | Abracon LLC |
XTAL OSC VCTCXO 25.0000MHZ LVCMO
Сборник данных
Сравнение
| Min.:1 Mult.:1 | 15 Weeks | Surface Mount | Surface Mount | 4-SMD, No Lead | - | - | - | - | - | - | - | - | - | -40°C~85°C | Tape & Reel (TR) | AST3TQ-50 | 0.276Lx0.197W 7.00mmx5.00mm | - | - | Active | 3 (168 Hours) | - | - | - | VCTCXO | - | - | - | TR, 13 INCH | - | 3.3V | - | 3.3V | - | - | - | 25MHz | ±50ppb | LVCMOS | - | - | Crystal | - | - | 7.0mm x 5.0mm x 1.9mm | 25MHz | - | 6ns | 6ns | 55/45% | - | - | - | - | 7mA | - | 2.5V | 0.5V | - | 2.0066mm | 0.079 2.00mm | - | - | - | - | RoHS Compliant | - | ||
| AST3TQ-V-25.000MHZ-50-C-T5 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | Mfr. ТипAST3TQ-V-16.384MHZ-50-C-T5Anlielectronics Тип | Abracon LLC |
XTAL OSC VCTCXO 16.3840MHZ LVCMO
Сборник данных
Сравнение
| Min.:1 Mult.:1 | 15 Weeks | Surface Mount | Surface Mount | 4-SMD, No Lead | - | - | - | - | - | - | - | - | - | -40°C~85°C | Tape & Reel (TR) | AST3TQ-50 | 0.276Lx0.197W 7.00mmx5.00mm | - | - | Active | 3 (168 Hours) | - | - | - | VCTCXO | - | - | - | TR, 13 INCH | - | 3.3V | - | 3.3V | - | - | - | 16.384MHz | ±50ppb | LVCMOS | - | - | Crystal | - | - | 7.0mm x 5.0mm x 1.9mm | 16.384MHz | - | 6ns | 6ns | 55/45% | - | - | - | - | 7mA | - | 2.5V | 0.5V | - | 2.0066mm | 0.079 2.00mm | - | - | - | - | RoHS Compliant | - | ||
| AST3TQ-V-16.384MHZ-50-C-T5 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | Mfr. ТипAST3TQ-V-26.000MHZ-50-C-T5Anlielectronics Тип | Abracon LLC |
XTAL OSC VCTCXO 26.0000MHZ LVCMO
Сборник данных
Сравнение
| Min.:1 Mult.:1 | 15 Weeks | Surface Mount | Surface Mount | 4-SMD, No Lead | - | - | - | - | - | - | - | - | - | -40°C~85°C | Tape & Reel (TR) | AST3TQ-50 | 0.276Lx0.197W 7.00mmx5.00mm | - | - | Active | 3 (168 Hours) | - | - | - | VCTCXO | - | - | - | TR, 13 INCH | - | 3.3V | - | 3.3V | - | - | - | 26MHz | ±50ppb | LVCMOS | - | - | Crystal | - | - | 7.0mm x 5.0mm x 1.9mm | 26MHz | - | 6ns | 6ns | 55/45% | - | - | - | - | 7mA | - | 2.5V | 0.5V | - | 2.0066mm | 0.079 2.00mm | - | - | - | - | RoHS Compliant | - | ||
| AST3TQ-V-26.000MHZ-50-C-T5 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | Mfr. ТипASA1-48.000MHZ-L-T3Anlielectronics Тип | Abracon LLC |
XTAL OSC XO 48.0000MHZ HCMOS SMD
Сборник данных
Сравнение
| Min.:1 Mult.:1 | 13 Weeks | Surface Mount | Surface Mount | 4-SMD, No Lead | - | - | - | - | - | - | - | - | - | -40°C~85°C | Tape & Reel (TR) | ASA | 0.079Lx0.063W 2.00mmx1.60mm | - | - | Active | 1 (Unlimited) | 4 | SMD/SMT | - | XO (Standard) | - | - | - | - | - | 2.5V | - | 2.5V | - | - | - | 48MHz | ±50ppm | HCMOS | - | Enable/Disable | Crystal | - | Not Qualified | - | 48MHz | 2.5V | - | - | - | - | - | - | 15pF | 10mA | - | - | - | - | 787.4μm | 0.031 0.80mm | - | - | - | - | RoHS Compliant | - | ||
| ASA1-48.000MHZ-L-T3 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | Mfr. ТипAST3TQ-V-10.000MHZ-50-C-T5Anlielectronics Тип | Abracon LLC |
XTAL OSC VCTCXO 10.0000MHZ LVCMO
Сборник данных
Сравнение
| Min.:1 Mult.:1 | 15 Weeks | Surface Mount | Surface Mount | 4-SMD, No Lead | - | - | - | - | - | - | - | - | - | -40°C~85°C | Tape & Reel (TR) | AST3TQ-50 | 0.276Lx0.197W 7.00mmx5.00mm | - | - | Active | 3 (168 Hours) | - | - | - | VCTCXO | - | - | - | TR, 13 INCH | - | 3.3V | - | 3.3V | - | - | - | 10MHz | ±50ppb | LVCMOS | - | - | Crystal | - | - | 7.0mm x 5.0mm x 1.9mm | 10MHz | - | 6ns | 6ns | 55/45% | - | - | - | - | 7mA | - | 2.5V | 0.5V | - | 2.0066mm | 0.079 2.00mm | - | - | - | - | RoHS Compliant | - | ||
| AST3TQ-V-10.000MHZ-50-C-T5 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | Mfr. ТипASFLMB-33.333MHZ-LY-TAnlielectronics Тип | Abracon LLC |
OSC MEMS 33.333MHZ CMOS SMD
Сборник данных
Сравнение
| Min.:1 Mult.:1 | 15 Weeks | Surface Mount | Surface Mount | 4-SMD, No Lead | - | 4 | - | - | - | - | - | - | - | -40°C~85°C | Tape & Reel (TR) | ASFLMB, Pure Silicon™ | 0.197Lx0.126W 5.00mmx3.20mm | - | - | Active | 1 (Unlimited) | - | SMD/SMT | - | XO (Standard) | - | 85°C | -40°C | - | - | 1.8V~3.3V | - | - | - | - | - | 33.333MHz | ±10ppm | LVCMOS | - | Standby (Power Down) | MEMS | 16mA | - | - | - | 3.6V | - | - | - | - | - | 15μA | 15pF | 16mA | - | - | - | - | 889μm | 0.035 0.90mm | 5.0038mm | 3.2004mm | No | - | RoHS Compliant | - | ||
| ASFLMB-33.333MHZ-LY-T | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | Mfr. ТипASFLMPC-54.000MHZ-LR-TAnlielectronics Тип | Abracon LLC |
MEMS OSC XO 54.0000MHZ CMOS SMD
Сборник данных
Сравнение
| Min.:1 Mult.:1 | 13 Weeks | Surface Mount | Surface Mount | 6-SMD, No Lead | - | - | - | - | - | - | - | - | - | -40°C~85°C | Tape & Reel (TR) | ASFLMP, Pure Silicon™ | 0.197Lx0.126W 5.00mmx3.20mm | e4 | - | Active | 1 (Unlimited) | 6 | SMD/SMT | - | XO (Standard) | Nickel/Palladium/Gold (Ni/Pd/Au) | - | - | - | - | 2.25V~3.6V | - | - | - | - | - | 54MHz | 25 ppm | CMOS | - | Enable/Disable | MEMS | - | Not Qualified | - | 54MHz | 3.6V | - | - | - | - | 2.5/3.3V | 22mA | - | 35mA | - | - | - | - | 889μm | 0.035 0.90mm | - | - | - | - | RoHS Compliant | - | ||
| ASFLMPC-54.000MHZ-LR-T | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | Mfr. ТипASG-D-X-A-200.000MHZ-TAnlielectronics Тип | Abracon LLC |
Programmable Oscillators 3.3Volt 200.000MHz LVDS
Сборник данных
Сравнение
| Min.:1 Mult.:1 | 15 Weeks | Surface Mount | Surface Mount | 6-SMD, No Lead | - | 6 | - | - | - | - | - | - | - | -40°C~85°C | Tape & Reel (TR) | ASG-D | 0.276Lx0.197W 7.00mmx5.00mm | - | - | Active | 1 (Unlimited) | 6 | SMD/SMT | EAR99 | XO (Standard) | - | - | - | - | 8542.39.00.01 | 3.3V | DUAL | 3.3V | 2.54mm | - | - | 200MHz | ±35ppm | LVDS | - | Enable/Disable | Crystal | - | Not Qualified | - | - | 3.3V | - | - | - | - | - | - | - | 40mA | - | - | - | - | 1.905mm | 0.075 1.90mm | - | - | - | - | RoHS Compliant | - | ||
| ASG-D-X-A-200.000MHZ-T | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | Mfr. ТипASFLMPC-60.000MHZ-LY-T3Anlielectronics Тип | Abracon LLC |
MEMS OSC XO 60.0000MHZ CMOS SMD
Сборник данных
Сравнение
| Min.:1 Mult.:1 | 13 Weeks | Surface Mount | Surface Mount | 6-SMD, No Lead | - | - | - | - | - | - | - | - | - | -40°C~85°C | Tape & Reel (TR) | ASFLMP, Pure Silicon™ | 0.197Lx0.126W 5.00mmx3.20mm | e4 | - | Active | 1 (Unlimited) | 6 | SMD/SMT | - | XO (Standard) | Nickel/Palladium/Gold (Ni/Pd/Au) | - | - | - | - | 2.25V~3.6V | - | - | - | - | - | 60MHz | 10 ppm | CMOS | - | Enable/Disable | MEMS | - | Not Qualified | - | 60MHz | 3.6V | - | - | - | - | 2.5/3.3V | 22mA | - | 35mA | - | - | - | - | 889μm | 0.035 0.90mm | - | - | - | - | RoHS Compliant | - | ||
| ASFLMPC-60.000MHZ-LY-T3 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | Mfr. ТипASFL1-66.666MHZ-L-TAnlielectronics Тип | Abracon LLC |
OSC XO 66.666MHZ HCMOS TTL SMD
Сборник данных
Сравнение
| Min.:1 Mult.:1 | 11 Weeks | Surface Mount | Surface Mount | 4-SMD, No Lead | - | 4 | - | - | - | - | - | - | Industrial grade | -40°C~85°C | Tape & Reel (TR) | ASFL1 | 0.197Lx0.126W 5.00mmx3.20mm | - | - | Active | 1 (Unlimited) | - | SMD/SMT | - | XO (Standard) | - | 85°C | -40°C | - | - | 3.3V | - | - | - | 3.2mm | - | 66.666MHz | ±100ppm | HCMOS, TTL | - | Enable/Disable | Crystal | 45mA | - | - | - | 3.3V | - | - | - | - | - | 10μA | 15pF | 45mA | - | - | - | - | 1.2954mm | 0.051 1.30mm | 5.0038mm | 3.2004mm | No | - | RoHS Compliant | - | ||
| ASFL1-66.666MHZ-L-T | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | Mfr. ТипABLNO-V-81.920MHZAnlielectronics Тип | Abracon LLC |
XTAL OSC VCXO 81.9200MHZ LVCMOS
Сборник данных
Сравнение
| Min.:1 Mult.:1 | 11 Weeks | Surface Mount | Surface Mount | 4-SMD, No Lead | - | 4 | - | - | - | - | - | - | - | -40°C~85°C | Strip | ABLNO | 0.563Lx0.343W 14.30mmx8.70mm | - | - | Active | 1 (Unlimited) | - | SMD/SMT | - | VCXO | - | - | - | - | - | 3.3V | - | - | - | - | - | 81.92MHz | ±18ppm | LVCMOS | - | - | Crystal | - | - | - | - | 3.3V | - | - | - | - | - | - | 15pF | 25mA | - | - | - | - | 6.5024mm | 0.217 5.50mm | - | - | - | - | RoHS Compliant | - | ||
| ABLNO-V-81.920MHZ | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | Mfr. ТипASFL1-48.000MHZ-EK-TAnlielectronics Тип | Abracon LLC |
OSC XO 48.000MHZ HCMOS TTL SMD
Сборник данных
Сравнение
| Min.:1 Mult.:1 | 11 Weeks | Surface Mount | Surface Mount | 4-SMD, No Lead | - | 4 | - | - | - | - | - | - | Commercial grade | -20°C~70°C | Tape & Reel (TR) | ASFL1 | 0.197Lx0.126W 5.00mmx3.20mm | - | - | Active | 1 (Unlimited) | - | SMD/SMT | - | XO (Standard) | - | 70°C | -20°C | - | - | 3.3V | - | - | - | - | - | 48MHz | ±30ppm | HCMOS, TTL | - | Enable/Disable | Crystal | 45mA | - | - | - | 3.3V | - | - | - | - | - | 10μA | 15pF | 45mA | 0.003% | - | - | - | 1.2954mm | 0.051 1.30mm | 5.0038mm | 3.2004mm | No | No SVHC | RoHS Compliant | Lead Free | ||
| ASFL1-48.000MHZ-EK-T | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | Mfr. ТипACH-2.5600MHZ-L-AAnlielectronics Тип | Abracon LLC. |
Standard Clock Oscillators
Сборник данных
Сравнение
| Min.:1 Mult.:1 | - | - | - | - | - | - | 55 % | + 85 C | - 40 C | Details | 5.5 V | 4.5 V | - | - | Tube | ACH | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 30 mA | 2.56 MHz | 100 PPM | - | Radial | - | - | - | - | - | - | - | - | - | - | 7.62 mm | - | - | 15 pF | - | - | - | - | HCMOS, TTL | 5.6 mm | - | 12.7 mm | 12.7 mm | - | - | - | - | ||
| ACH-2.5600MHZ-L-A |
Индекс :
0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ









