
- Все продукты
- /
- Resistors
- /
- Resistor Networks, Arrays
Изображение | Тип | Марка | Объяснение | Установленная цена | Количество | RoHS | Factory Lead Time | Package / Case | Surface Mount | Terminal Shape | Mounting Feature | Number of Terminals | Case Size | Case Size per Element | Case Style | Circuit Designator | Depth Tolerance (mm) | ECCN (US) | Height Tolerance (mm) | HTS | Length Tolerance (mm) | Maximum Operating Temperature (°C) | Maximum Voltage Rating (V) | Minimum Operating Temperature (°C) | Mounting | Mounting Styles | No. of Terminals | Number of Elements | Operating Temp Range | Package Shape | Package Type | Power Rating Per Resistor | Power Rating per Resistor (W) | Product Depth (mm) | Rad Hardened | Resistance Value (Ohm) | RoHS | Seated Plane Height | Temperature Coefficient (ppm/°C) | Temperature Range @ Derated Power | Temperature Range @ Derated Power (°C) | Terminal Pitch (mm) | Tolerance (+ or -) | Voltage Rated | Packaging | Published | Tolerance | JESD-609 Code | Pbfree Code | Part Status | Number of Terminations | Termination | ECCN Code | Temperature Coefficient | Type | Resistance | Terminal Finish | Max Operating Temperature | Min Operating Temperature | Power Rating | Packing Method | Number of Functions | Terminal Pitch | Depth | Construction | Resistor Type | Military Standard | Termination Style | Rated Power Dissipation (P) | Working Voltage | Failure Rate | Size Code | Rated Temperature | Power Dissipation | Number of Resistors | Element Power Dissipation | Network Type | Product Length (mm) | Length | Width | Product Height (mm) | Radiation Hardening | RoHS Status | Lead Free |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Mfr. ТипNRSN06I4J101TRFAnlielectronics Тип | NIC Components |
Res Thick Film Array 100 Ohm 5% ±200ppm/C ISOL Molded 8-Pin 1206 Concave SMD Paper T/R
Сборник данных
Сравнение
| Min.:1 Mult.:1 | - | SMD/SMT | YES | WRAPAROUND | SURFACE MOUNT | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 5% | e3 | yes | - | 8 | Concave | EAR99 | 200 ppm/°C | - | 100Ohm | Matte Tin (Sn) - with Nickel (Ni) barrier | 125°C | -55°C | 60mW | TR, PAPER, 7 INCH | 4 | 800μm | 1.6mm | Chip | ARRAY/NETWORK RESISTOR | Not | - | 0.0625W | 50V | - | 0612 | 70°C | - | 4 | 0.0625W | ISOLATED | - | 3.2mm | 1.6mm | - | - | RoHS Compliant | - | |||
NRSN06I4J101TRF | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Mfr. ТипNRSN06I4J151TRFAnlielectronics Тип | NIC Components |
-
Сборник данных
Сравнение
| Min.:1 Mult.:1 | - | SMD/SMT | YES | WRAPAROUND | SURFACE MOUNT | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 5% | e3 | yes | - | 8 | - | EAR99 | 200 ppm/°C | - | 150Ohm | Matte Tin (Sn) - with Nickel (Ni) barrier | 125°C | -55°C | 60mW | TR, PAPER, 7 INCH | 4 | - | - | Chip | ARRAY/NETWORK RESISTOR | - | - | 0.0625W | 50V | - | 0612 | 70°C | - | 4 | 0.0625W | ISOLATED | - | 3.2mm | 1.6mm | - | No | RoHS Compliant | - | |||
NRSN06I4J151TRF | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Mfr. ТипNRSN06I4J122TRFAnlielectronics Тип | NIC Components |
-
Сборник данных
Сравнение
| Min.:1 Mult.:1 | - | SMD/SMT | YES | WRAPAROUND | SURFACE MOUNT | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 5% | e3 | yes | - | 8 | - | EAR99 | 200 ppm/°C | - | 1.2kOhm | Matte Tin (Sn) - with Nickel (Ni) barrier | 125°C | -55°C | 60mW | TR, PAPER, 7 INCH | 4 | - | - | Chip | ARRAY/NETWORK RESISTOR | - | - | 0.0625W | 50V | - | 0612 | 70°C | - | 4 | 0.0625W | ISOLATED | - | 3.2mm | 1.6mm | - | No | RoHS Compliant | - | |||
NRSN06I4J122TRF | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Mfr. ТипNRSN06I4J152TRFAnlielectronics Тип | NIC Components |
Resistor ladder 1.50 kΩ SMD 1206 0.06 W
Сборник данных
Сравнение
| Min.:1 Mult.:1 | - | SMD/SMT | YES | WRAPAROUND | SURFACE MOUNT | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 5% | e3 | yes | - | 8 | - | - | 200 ppm/°C | - | 1.5kOhm | Matte Tin (Sn) - with Nickel (Ni) barrier | 125°C | -55°C | 60mW | TR, PAPER, 7 INCH | 4 | - | - | Chip | ARRAY/NETWORK RESISTOR | - | - | 0.0625W | 50V | - | 0612 | 70°C | - | 4 | 0.0625W | ISOLATED | - | 3.2mm | 1.6mm | - | No | RoHS Compliant | - | |||
NRSN06I4J152TRF | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Mfr. ТипNRSNA6I4J512TRFAnlielectronics Тип | NIC Components |
-
Сборник данных
Сравнение
| Min.:1 Mult.:1 | - | SMD/SMT | YES | WRAPAROUND | SURFACE MOUNT | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | Tape & Reel | - | 5% | e3 | yes | - | 8 | - | EAR99 | 200 ppm/°C | - | 5.1kOhm | Matte Tin (Sn) - with Nickel (Ni) barrier | 125°C | -55°C | - | TR, PAPER, 7 INCH | 4 | - | - | Chip | ARRAY/NETWORK RESISTOR | - | - | 0.0625W | 50V | - | 0612 | 70°C | - | 4 | 0.0625W | ISOLATED | - | - | - | - | No | RoHS Compliant | - | |||
NRSNA6I4J512TRF | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Mfr. ТипNRSNA6I4J153TRFAnlielectronics Тип | NIC Components |
Resistor ladder 15 kΩ SMD 1206 0.06 W 5
Сборник данных
Сравнение
| Min.:1 Mult.:1 | - | SMD/SMT | YES | WRAPAROUND | SURFACE MOUNT | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 5% | e3 | yes | - | 8 | - | EAR99 | 200 ppm/°C | - | 15kOhm | Matte Tin (Sn) - with Nickel (Ni) barrier | 125°C | -55°C | 60mW | TR, PAPER, 7 INCH | 4 | - | - | Chip | ARRAY/NETWORK RESISTOR | - | - | 0.0625W | 50V | - | 0612 | 70°C | - | 4 | 0.0625W | ISOLATED | - | 3.2mm | 1.6mm | - | No | RoHS Compliant | - | |||
NRSNA6I4J153TRF | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Mfr. ТипNRSNA4I4J472TRFAnlielectronics Тип | NIC Components |
Res Thick Film Array 4.7K Ohm 5% ±200ppm/C ISOL Molded 8-Pin 0804(4 X 0402) Convex SMD Paper T/R
Сборник данных
Сравнение
| Min.:1 Mult.:1 | - | 0804 | YES | WRAPAROUND | SURFACE MOUNT | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 4 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 25V | - | - | 5% | e3 | yes | - | 8 | Convex | EAR99 | 200 ppm/°C | - | 4.7kOhm | Matte Tin (Sn) - with Nickel (Ni) barrier | 125°C | -55°C | 60mW | TR, PAPER, 7 INCH | 4 | 500μm | 1mm | Chip | ARRAY/NETWORK RESISTOR | Not | - | - | - | - | - | 70°C | 63mW | - | - | ISOLATED | - | 2mm | 1mm | - | No | RoHS Compliant | Lead Free | |||
NRSNA4I4J472TRF | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Mfr. ТипNRSNA4I2J750TRFAnlielectronics Тип | NIC Components |
Res Thick Film Array 75 Ohm 5% ±250ppm/°C ISOL Molded 4-Pin 0404(2 X 0402) Convex SMD T/R
Сборник данных
Сравнение
| Min.:1 Mult.:1 | - | 0404(2 X 0402) | - | - | - | 4 | 0404 | 0402 | Molded | ISOL | - | EAR99 | - | - | - | 125 | 25 | -55 | Surface Mount | Surface Mount | 4 | - | -55C to 125C | Rectangular | SMD | 0.063 (1/16)(W) | 0.063 (1/16) | 1 | No | 75 | - | Not Required(mm) | ±250 | 70 TO 125 | 70 to 125 | 0.67 | 5% | - | Tape and Reel | - | 5% | - | - | Active | - | - | - | ±250(ppm/°C) | Array | 75(ohm) | - | - | - | - | - | - | 0.67(mm) | - | Rectangular | - | Not Required | Convex | - | - | Not Required | - | - | - | 2 | - | - | 1 | - | - | 0.3 | - | Yes with exemptions | - | |||
NRSNA4I2J750TRF | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Mfr. ТипNRSNA4I4J390TRFAnlielectronics Тип | NIC Components |
Res Thick Film Array 39 Ohm 5% ±200ppm/C ISOL Molded 8-Pin 0804(4 X 0402) Convex SMD Paper T/R
Сборник данных
Сравнение
| Min.:1 Mult.:1 | - | SMD/SMT | YES | WRAPAROUND | SURFACE MOUNT | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | Tape & Reel | - | 5% | e3 | yes | - | 8 | - | EAR99 | 200 ppm/°C | - | 39Ohm | Matte Tin (Sn) - with Nickel (Ni) barrier | 125°C | -55°C | - | TR, PAPER, 7 INCH | 4 | - | - | Chip | ARRAY/NETWORK RESISTOR | - | - | 0.0625W | 25V | - | - | 70°C | - | 4 | 0.0625W | ISOLATED | - | - | - | - | No | RoHS Compliant | - | |||
NRSNA4I4J390TRF | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Mfr. ТипNRSN06I4G223TRFAnlielectronics Тип | NIC Components |
-
Сборник данных
Сравнение
| Min.:1 Mult.:1 | - | SMD/SMT | YES | WRAPAROUND | SURFACE MOUNT | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | Tape & Reel | - | 2% | e3 | yes | - | 8 | - | - | 200 ppm/°C | - | 22kOhm | Matte Tin (Sn) - with Nickel (Ni) barrier | 125°C | -55°C | - | TR, PAPER, 7 INCH | 4 | - | - | Chip | ARRAY/NETWORK RESISTOR | - | - | 0.0625W | 50V | - | 0612 | 70°C | - | 4 | 0.0625W | ISOLATED | - | - | - | - | No | RoHS Compliant | - | |||
NRSN06I4G223TRF | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Mfr. ТипNRSNA6I4J562TRFAnlielectronics Тип | NIC Components |
-
Сборник данных
Сравнение
| Min.:1 Mult.:1 | - | SMD/SMT | YES | WRAPAROUND | SURFACE MOUNT | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 5% | e3 | yes | - | 8 | - | EAR99 | 200 ppm/°C | - | 5.6kOhm | Matte Tin (Sn) - with Nickel (Ni) barrier | 125°C | -55°C | 60mW | TR, PAPER, 7 INCH | 4 | - | - | Chip | ARRAY/NETWORK RESISTOR | - | - | 0.0625W | 50V | - | 0612 | 70°C | - | 4 | 0.0625W | ISOLATED | - | 3.2mm | 1.6mm | - | No | RoHS Compliant | Lead Free | |||
NRSNA6I4J562TRF | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Mfr. ТипNRSNE2I4J330TRFAnlielectronics Тип | NIC Components |
Res Thick Film Array 33 Ohm 5% ±200ppm/°C ISOL Molded 8-Pin 0502(4 X 0201) Flat SMD T/R
Сборник данных
Сравнение
| Min.:1 Mult.:1 | - | 0502(4 X 0201) | - | - | - | 8 | 0502 | 0201 | Molded | ISOL | ±0.1 | EAR99 | ±0.1 | 8533.21.00.30 | ±0.1 | 125 | 12.5 | -55 | Surface Mount | Surface Mount | 8 | - | -55C to 125C | Rectangular | SMD | 0.031 (1/32)(W) | 0.031 (1/32) | 0.6 | No | 33 | - | Not Required(mm) | ±200 | 70 TO 125 | 70 to 125 | 0.4 | 5% | - | Tape and Reel | - | 5% | - | - | Active | - | - | - | ±200(ppm/°C) | Array | 33(ohm) | - | - | - | - | - | - | 0.4(mm) | - | Rectangular | - | Not Required | Flat | - | - | Not Required | - | - | - | 4 | - | - | 1.4 | - | - | 0.35 | - | Yes with exemptions | - | |||
NRSNE2I4J330TRF | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Mfr. ТипNRSNA6I4J122TRFAnlielectronics Тип | NIC Components |
Resistor ladder 1.2 kΩ SMD 1206 0.06 W 5
Сборник данных
Сравнение
| Min.:1 Mult.:1 | 25 Weeks | SMD/SMT | YES | WRAPAROUND | SURFACE MOUNT | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 2010 | 5% | e3 | yes | Active | 8 | - | EAR99 | 200 ppm/°C | - | 1.2kOhm | Matte Tin (Sn) - with Nickel (Ni) barrier | 125°C | -55°C | 60mW | TR, PAPER, 7 INCH | 4 | - | - | Chip | ARRAY/NETWORK RESISTOR | - | - | 0.0625W | 50V | - | 0612 | 70°C | - | 4 | 0.0625W | ISOLATED | - | 3.2mm | 1.6mm | - | No | RoHS Compliant | - | |||
NRSNA6I4J122TRF | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Mfr. ТипNRSNA4I4Z0TRFAnlielectronics Тип | NIC Components |
Res Thick Film Array 0 Ohm ISOL Molded 8-Pin 0804(4 X 0402) Convex SMD T/R
Сборник данных
Сравнение
| Min.:1 Mult.:1 | - | 0804(4 X 0402) | - | - | - | 8 | 0804 | 0402 | Molded | ISOL | - | EAR99 | - | 8533.21.00.20 | - | 125 | - | -55 | Surface Mount | - | - | - | - | Rectangular | SMD | - | - | 1 | - | 0 | Compliant | - | - | - | 70 to 125 | 0.5 | - | - | Tape and Reel | - | - | - | - | Active | - | - | - | - | Array | - | - | - | - | - | - | - | - | - | - | - | - | Convex | - | - | - | - | - | - | 4 | - | - | 2 | - | - | 0.4 | - | Yes with exemptions | - | |||
NRSNA4I4Z0TRF | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Mfr. ТипNRSN06I4J102TRFAnlielectronics Тип | NIC Components |
-
Сборник данных
Сравнение
| Min.:1 Mult.:1 | - | 1206 | YES | WRAPAROUND | SURFACE MOUNT | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 5% | e3 | yes | - | 8 | Concave | EAR99 | 200 ppm/°C | - | 1kOhm | Matte Tin (Sn) - with Nickel (Ni) barrier | 125°C | -55°C | 60mW | TR, PAPER, 7 INCH | 4 | 800μm | 1.6mm | Chip | ARRAY/NETWORK RESISTOR | Not | - | 0.0625W | 50V | - | 0612 | 70°C | - | 4 | 0.0625W | ISOLATED | - | 3.2mm | 1.6mm | - | No | RoHS Compliant | Lead Free | |||
NRSN06I4J102TRF | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Mfr. ТипNRSNA4I4J561TRFAnlielectronics Тип | NIC Components |
Res Thick Film Array 560 Ohm 5% ±200ppm/°C ISOL Molded 8-Pin 0804(4 X 0402) Convex SMD T/R
Сборник данных
Сравнение
| Min.:1 Mult.:1 | - | 0804(4 X 0402) | - | - | - | 8 | 0804 | 0402 | Molded | ISOL | - | EAR99 | - | - | - | 125 | 25 | -55 | Surface Mount | Surface Mount | 8 | - | -55C to 125C | Rectangular | SMD | 0.063 (1/16)(W) | 0.063 (1/16) | 1 | No | 560 | - | Not Required(mm) | ±200 | 70 TO 125 | 70 to 125 | 0.5 | 5% | - | Tape and Reel | - | 5% | - | - | Active | - | - | - | ±200(ppm/°C) | Array | 560(ohm) | - | - | - | - | - | - | 0.5(mm) | - | Rectangular | - | Not Required | Convex | - | - | Not Required | - | - | - | 4 | - | - | 2 | - | - | 0.4 | - | Yes with exemptions | - | |||
NRSNA4I4J561TRF | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Mfr. ТипNRSNA6I4J510TRFAnlielectronics Тип | NIC Components |
-
Сборник данных
Сравнение
| Min.:1 Mult.:1 | - | SMD/SMT | YES | WRAPAROUND | SURFACE MOUNT | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | Tape & Reel | - | 5% | e3 | yes | - | 8 | - | EAR99 | 200 ppm/°C | - | 51Ohm | Matte Tin (Sn) - with Nickel (Ni) barrier | 125°C | -55°C | - | TR, PAPER, 7 INCH | 4 | - | - | Chip | ARRAY/NETWORK RESISTOR | - | - | 0.0625W | 50V | - | 0612 | 70°C | - | 4 | 0.0625W | ISOLATED | - | - | - | - | No | RoHS Compliant | - | |||
NRSNA6I4J510TRF | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Mfr. ТипNRSNA6I4J470TRFAnlielectronics Тип | NIC Components |
-
Сборник данных
Сравнение
| Min.:1 Mult.:1 | - | 1206 | YES | WRAPAROUND | SURFACE MOUNT | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | Tape and Reel | - | 5% | e3 | yes | - | 8 | Convex | - | 200 ppm/°C | - | 47Ohm | Matte Tin (Sn) - with Nickel (Ni) barrier | 125°C | -55°C | 60mW | TR, PAPER, 7 INCH | 4 | 800μm | 1.6mm | Chip | ARRAY/NETWORK RESISTOR | Not | - | 0.0625W | 50V | - | 0612 | 70°C | - | 4 | 0.0625W | ISOLATED | - | 3.2mm | 1.6mm | - | No | RoHS Compliant | Lead Free | |||
NRSNA6I4J470TRF | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Mfr. ТипNRSN06I4J183TRFAnlielectronics Тип | NIC Components |
-
Сборник данных
Сравнение
| Min.:1 Mult.:1 | - | SMD/SMT | YES | WRAPAROUND | SURFACE MOUNT | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | Tape & Reel | - | 5% | e3 | yes | - | 8 | - | EAR99 | 200 ppm/°C | - | 18kOhm | Matte Tin (Sn) - with Nickel (Ni) barrier | 125°C | -55°C | - | TR, PAPER, 7 INCH | 4 | - | - | Chip | ARRAY/NETWORK RESISTOR | - | - | 0.0625W | 50V | - | 0612 | 70°C | - | 4 | 0.0625W | ISOLATED | - | - | - | - | No | RoHS Compliant | - | |||
NRSN06I4J183TRF | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Mfr. ТипNRSN06I4J123TRFAnlielectronics Тип | NIC Components |
-
Сборник данных
Сравнение
| Min.:1 Mult.:1 | - | 1206 | YES | WRAPAROUND | SURFACE MOUNT | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | Tape & Reel | - | 5% | e3 | yes | - | 8 | Concave | EAR99 | 200 ppm/°C | - | 12kOhm | Matte Tin (Sn) - with Nickel (Ni) barrier | 125°C | -55°C | - | TR, PAPER, 7 INCH | 4 | 800μm | 1.6mm | Chip | ARRAY/NETWORK RESISTOR | Not | - | 0.0625W | 50V | - | 0612 | 70°C | - | 4 | 0.0625W | ISOLATED | - | 3.2mm | - | - | No | RoHS Compliant | - | |||
NRSN06I4J123TRF |
Индекс :
0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ