| Изображение | Тип | Марка | Объяснение | Установленная цена | Количество | RoHS | Factory Lead Time | Mount | Mounting Type | Package / Case | Surface Mount | Number of Pins | Supplier Device Package | Memory Types | Usage Level | Operating Temperature | Packaging | Published | JESD-609 Code | Pbfree Code | Part Status | Moisture Sensitivity Level (MSL) | Number of Terminations | Termination | ECCN Code | Terminal Finish | Max Operating Temperature | Min Operating Temperature | Additional Feature | HTS Code | Voltage - Supply | Terminal Position | Peak Reflow Temperature (Cel) | Number of Functions | Supply Voltage | Terminal Pitch | Reach Compliance Code | Frequency | Time@Peak Reflow Temperature-Max (s) | Pin Count | JESD-30 Code | Qualification Status | Operating Supply Voltage | Supply Voltage-Max (Vsup) | Supply Voltage-Min (Vsup) | Interface | Max Supply Voltage | Min Supply Voltage | Memory Size | Number of Ports | Operating Mode | Clock Frequency | Access Time | Memory Format | Memory Interface | Organization | Output Characteristics | Memory Width | Write Cycle Time - Word, Page | Address Bus Width | Density | Standby Current-Max | Memory Density | Max Frequency | Access Time (Max) | I/O Type | Refresh Cycles | Sequential Burst Length | Interleaved Burst Length | Height | Height Seated (Max) | Length | Width | Radiation Hardening | REACH SVHC | RoHS Status | Lead Free |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
  | Mfr. ТипAS7C4098A-15TINTRAnlielectronics Тип | Alliance Memory, Inc. |
SRAM 4M, 5V, 15ns, FAST 256K x 16 Asyn SRAM
Сборник данных
Сравнение
| Min.:1 Mult.:1 | 8 Weeks | - | Surface Mount | 44-TSOP (0.400, 10.16mm Width) | YES | - | - | Volatile | - | -40°C~85°C TA | Tape & Reel (TR) | 2001 | - | yes | Active | 3 (168 Hours) | 44 | - | - | - | - | - | - | - | 4.5V~5.5V | DUAL | NOT SPECIFIED | 1 | 5V | 0.8mm | - | - | NOT SPECIFIED | 44 | R-PDSO-G44 | - | 5V | - | - | - | - | - | 4Mb 256K x 16 | - | - | - | - | SRAM | Parallel | 256KX16 | - | 16 | 15ns | - | 4 Mb | - | - | - | 15 ns | - | - | - | - | - | 1.2mm | 18.415mm | 10.16mm | - | - | ROHS3 Compliant | Lead Free | ||
| AS7C4098A-15TINTR | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
 | Mfr. ТипAS4C8M16SA-6TINAnlielectronics Тип | Alliance Memory, Inc. |
IC SDRAM 128MBIT 166MHZ 54TSOP
Сборник данных
Сравнение
| Min.:1 Mult.:1 | 8 Weeks | - | Surface Mount | 54-TSOP (0.400, 10.16mm Width) | YES | - | - | Volatile | - | -40°C~85°C TA | Tray | 2014 | - | - | Active | 3 (168 Hours) | 54 | - | EAR99 | - | - | - | AUTO/SELF REFRESH | - | 3V~3.6V | DUAL | 260 | 1 | 3.3V | 0.8mm | - | - | 40 | - | R-PDSO-G54 | - | - | 3.6V | 3V | - | - | - | 128Mb 8M x 16 | 1 | SYNCHRONOUS | 166MHz | 5ns | DRAM | Parallel | 8MX16 | - | 16 | 12ns | - | - | - | 134217728 bit | - | - | - | - | - | - | - | 1.2mm | 22.22mm | 10.16mm | - | - | ROHS3 Compliant | Lead Free | ||
| AS4C8M16SA-6TIN | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
 | Mfr. ТипAS7C3256A-10TINAnlielectronics Тип | Alliance Memory, Inc. |
ALLIANCE MEMORY AS7C3256A-10TIN SRAM, 256K, 10NS, 32KX8, TSOP28
Сборник данных
Сравнение
| Min.:1 Mult.:1 | 8 Weeks | - | Surface Mount | 28-TSSOP (0.465, 11.80mm Width) | - | 28 | 28-TSOP I | Volatile | Industrial grade | -40°C~85°C TA | Tray | 2001 | - | - | Active | 3 (168 Hours) | - | SMD/SMT | - | - | 85°C | -40°C | - | - | 3V~3.6V | - | - | - | - | - | - | - | - | - | - | - | 3.3V | - | - | Parallel | 3.6V | 3V | 256Kb 32K x 8 | 1 | - | - | 10ns | SRAM | Parallel | - | - | - | 10ns | 15b | 256 kb | - | - | - | - | - | - | - | - | - | - | - | - | No | No SVHC | ROHS3 Compliant | - | ||
| AS7C3256A-10TIN | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| | Mfr. ТипAS4C16M16SA-7TCNTRAnlielectronics Тип | Alliance Memory, Inc. |
IC DRAM 256M PARALLEL 54TSOP
Сборник данных
Сравнение
| Min.:1 Mult.:1 | 8 Weeks | - | Surface Mount | 54-TSOP (0.400, 10.16mm Width) | - | - | - | Volatile | Commercial grade | 0°C~70°C TA | Tape & Reel (TR) | 2014 | - | - | Active | 3 (168 Hours) | - | - | - | - | - | - | - | - | 3V~3.6V | - | NOT SPECIFIED | - | - | - | unknown | - | NOT SPECIFIED | - | - | - | - | - | - | - | - | - | 256Mb 16M x 16 | - | - | 166MHz | 5.4ns | DRAM | Parallel | - | - | - | 14ns | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | Non-RoHS Compliant | Lead Free | ||
| AS4C16M16SA-7TCNTR | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
 | Mfr. ТипAS4C16M16SA-6BINAnlielectronics Тип | Alliance Memory, Inc. |
IC DRAM 256M PARALLEL 54TFBGA
Сборник данных
Сравнение
| Min.:1 Mult.:1 | 8 Weeks | - | Surface Mount | 54-TFBGA | YES | - | - | Volatile | Industrial grade | -40°C~85°C TA | Tray | 2014 | - | - | Active | 3 (168 Hours) | 54 | - | EAR99 | - | - | - | AUTO/SELF REFRESH | - | 3V~3.6V | BOTTOM | NOT SPECIFIED | 1 | 3.3V | 0.8mm | - | - | NOT SPECIFIED | - | S-PBGA-B54 | - | - | 3.6V | 3V | - | - | - | 256Mb 16M x 16 | 1 | SYNCHRONOUS | 166MHz | 5ns | DRAM | Parallel | 16MX16 | - | 16 | 12ns | - | - | - | 268435456 bit | - | - | - | - | - | - | - | 1.2mm | 8mm | 8mm | - | - | ROHS3 Compliant | Lead Free | ||
| AS4C16M16SA-6BIN | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
 | Mfr. ТипAS4C64M16D3A-12BCNAnlielectronics Тип | Alliance Memory, Inc. |
IC DRAM 1G PARALLEL 96FBGA
Сборник данных
Сравнение
| Min.:1 Mult.:1 | 8 Weeks | - | Surface Mount | 96-VFBGA | YES | - | - | Volatile | - | 0°C~95°C TC | Tray | 2015 | - | yes | Discontinued | 3 (168 Hours) | 96 | - | - | - | - | - | AUTO/SELF REFRESH | - | 1.425V~1.575V | BOTTOM | NOT SPECIFIED | 1 | 1.5V | 0.8mm | - | - | NOT SPECIFIED | - | R-PBGA-B96 | - | - | 1.575V | 1.425V | - | - | - | 1Gb 64M x 16 | 1 | SYNCHRONOUS | 800MHz | 20ns | DRAM | Parallel | 64MX16 | - | 16 | 15ns | - | - | - | 1073741824 bit | - | - | - | - | - | - | - | 1mm | 13mm | 8mm | - | - | ROHS3 Compliant | - | ||
| AS4C64M16D3A-12BCN | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
 | Mfr. ТипAS7C4096A-12JCNAnlielectronics Тип | Alliance Memory, Inc. |
SRAM 4M, 5V, 12ns, FAST 512K x 8 Asynch SRAM
Сборник данных
Сравнение
| Min.:1 Mult.:1 | 8 Weeks | - | Surface Mount | 36-BSOJ (0.400, 10.16mm Width) | - | 36 | 36-SOJ | Volatile | Commercial grade | 0°C~70°C TA | Tube | 2001 | - | - | Active | 3 (168 Hours) | - | - | - | - | 70°C | 0°C | - | - | 4.5V~5.5V | - | - | - | - | - | - | - | - | - | - | - | 5V | - | - | Parallel | 5.5V | 4.5V | 4Mb 512K x 8 | 1 | - | - | 12ns | SRAM | Parallel | - | - | - | 12ns | 19b | 4 Mb | - | - | 83MHz | - | - | - | - | - | - | - | - | - | No | - | ROHS3 Compliant | Lead Free | ||
| AS7C4096A-12JCN | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| | Mfr. ТипAS7C4098A-15TCNAnlielectronics Тип | Alliance Memory, Inc. |
SRAM Chip Async Single 5V 4M-Bit 256K x 16 15ns 44-Pin TSOP-II
Сборник данных
Сравнение
| Min.:1 Mult.:1 | 8 Weeks | - | Surface Mount | 44-TSOP (0.400, 10.16mm Width) | - | 44 | 44-TSOP2 | Volatile | Commercial grade | 0°C~70°C TA | Tray | 2001 | - | - | Active | 3 (168 Hours) | - | - | - | - | 70°C | 0°C | - | - | 4.5V~5.5V | - | - | - | - | - | - | - | - | - | - | - | 5V | - | - | Parallel | 5.5V | 4.5V | 4Mb 256K x 16 | 1 | - | - | 15ns | SRAM | Parallel | - | - | - | 15ns | 18b | 4 Mb | - | - | - | - | - | - | - | - | - | - | - | - | No | - | ROHS3 Compliant | Lead Free | ||
| AS7C4098A-15TCN | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
 | Mfr. ТипU62256ADK07LLG1Anlielectronics Тип | Alliance Memory, Inc. |
SRAM Chip Async Single 5V 256K-Bit 32K x 8 70ns 28-Pin PDIP
Сборник данных
Сравнение
| Min.:1 Mult.:1 | 8 Weeks | - | Through Hole | 28-DIP (0.600, 15.24mm) | NO | 28 | - | Volatile | - | -40°C~85°C TA | Tube | 2007 | - | yes | Active | 1 (Unlimited) | 28 | - | EAR99 | - | - | - | - | - | 4.5V~5.5V | DUAL | - | 1 | 5V | 2.54mm | - | - | - | 28 | - | - | 5V | - | - | - | - | - | 256Kb 32K x 8 | 1 | - | - | - | SRAM | Parallel | 32KX8 | - | 8 | 70ns | 15b | 256 kb | - | - | - | 70 ns | - | - | - | - | - | - | - | - | No | - | ROHS3 Compliant | Lead Free | ||
| U62256ADK07LLG1 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| | Mfr. ТипAS4C4M16SA-6TINTRAnlielectronics Тип | Alliance Memory, Inc. |
IC DRAM 64M PARALLEL 54TSOP
Сборник данных
Сравнение
| Min.:1 Mult.:1 | 8 Weeks | - | Surface Mount | 54-TSOP (0.400, 10.16mm Width) | YES | - | - | Volatile | - | -40°C~85°C TA | Tape & Reel (TR) | 2015 | - | - | Active | 3 (168 Hours) | 54 | - | - | - | - | - | AUTO/SELF REFRESH | - | 3V~3.6V | BOTTOM | - | 1 | 3.3V | 0.8mm | - | - | - | - | S-PBGA-B54 | - | - | 3.6V | 3V | - | - | - | 64Mb 4M x 16 | 1 | SYNCHRONOUS | 166MHz | 5.4ns | DRAM | Parallel | 4MX16 | - | 16 | 2ns | - | - | - | 67108864 bit | - | - | - | - | - | - | - | 1.2mm | 8mm | 8mm | - | - | Non-RoHS Compliant | - | ||
| AS4C4M16SA-6TINTR | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
 | Mfr. ТипAS4C16M16D1-5BCNAnlielectronics Тип | Alliance Memory, Inc. |
IC DRAM 256M PARALLEL 60TFBGA
Сборник данных
Сравнение
| Min.:1 Mult.:1 | 8 Weeks | - | Surface Mount | 60-TFBGA | YES | 60 | - | Volatile | Commercial grade | 0°C~70°C TA | Tray | 2013 | e1 | yes | Active | 3 (168 Hours) | 60 | - | EAR99 | Tin/Silver/Copper (Sn/Ag/Cu) | - | - | AUTO/SELF REFRESH | 8542.32.00.24 | 2.3V~2.7V | BOTTOM | 260 | 1 | 2.5V | 1mm | - | - | 40 | 60 | - | Not Qualified | 2.5V | 2.7V | 2.3V | - | - | - | 256Mb 16M x 16 | 1 | SYNCHRONOUS | 200MHz | 700ps | DRAM | Parallel | 16MX16 | 3-STATE | 16 | 15ns | 13b | 256 Mb | 0.04A | - | - | - | COMMON | 8192 | 248 | 248 | - | 1.2mm | 13mm | - | - | - | ROHS3 Compliant | - | ||
| AS4C16M16D1-5BCN | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
 | Mfr. ТипAS7C34098A-20JCNAnlielectronics Тип | Alliance Memory, Inc. |
SRAM Chip Async Single 3.3V 4M-Bit 256K x 16 20ns 44-Pin SOJ
Сборник данных
Сравнение
| Min.:1 Mult.:1 | 10 Weeks | - | Surface Mount | 44-BSOJ (0.400, 10.16mm Width) | - | 44 | 44-SOJ | Volatile | - | 0°C~70°C TA | Tube | 2001 | - | - | Active | 3 (168 Hours) | - | - | - | - | 70°C | 0°C | - | - | 3V~3.6V | - | - | - | - | - | - | - | - | - | - | - | 3.3V | - | - | Parallel | 3.6V | 3V | 4Mb 256K x 16 | 1 | - | - | 20ns | SRAM | Parallel | - | - | - | 20ns | 18b | 4 Mb | - | - | - | - | - | - | - | - | - | - | - | - | No | - | ROHS3 Compliant | - | ||
| AS7C34098A-20JCN | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
 | Mfr. ТипAS4C4M32SA-6TINAnlielectronics Тип | Alliance Memory, Inc. |
IC DRAM 128M PARALLEL 86TSOP II
Сборник данных
Сравнение
| Min.:1 Mult.:1 | 8 Weeks | - | Surface Mount | 86-TFSOP (0.400, 10.16mm Width) | YES | - | - | Volatile | Industrial grade | -40°C~85°C TA | Tray | - | - | yes | Active | 3 (168 Hours) | 86 | - | EAR99 | - | - | - | AUTO/SELF REFRESH | - | 3V~3.6V | DUAL | NOT SPECIFIED | 1 | 3.3V | 0.5mm | - | - | NOT SPECIFIED | - | R-PDSO-G86 | - | - | 3.6V | 3V | - | - | - | 128Mb 4M x 32 | 1 | SYNCHRONOUS | 166MHz | 5.4ns | DRAM | Parallel | 4MX32 | - | 32 | 2ns | - | - | - | 134217728 bit | - | - | - | - | - | - | - | 1.2mm | 22.22mm | 10.16mm | - | - | ROHS3 Compliant | - | ||
| AS4C4M32SA-6TIN | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
 | Mfr. ТипAS7C1025B-15TJCNAnlielectronics Тип | Alliance Memory, Inc. |
SRAM Chip Async Single 5V 1M-Bit 128K x 8 15ns 32-Pin SOJ
Сборник данных
Сравнение
| Min.:1 Mult.:1 | 8 Weeks | - | Surface Mount | 32-BSOJ (0.300, 7.62mm Width) | - | 32 | 32-SOJ | Volatile | - | 0°C~70°C TA | Tube | 2001 | - | - | Active | 3 (168 Hours) | - | - | - | - | 70°C | 0°C | - | - | 4.5V~5.5V | - | - | - | - | - | - | - | - | - | - | - | 5V | - | - | Parallel | 5.5V | 4.5V | 1Mb 128K x 8 | 1 | - | - | 15ns | SRAM | Parallel | - | - | - | 15ns | 17b | 1 Mb | - | - | - | - | - | - | - | - | - | - | - | - | No | - | ROHS3 Compliant | - | ||
| AS7C1025B-15TJCN | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| | Mfr. ТипAS7C32098A-10TINAnlielectronics Тип | Alliance Memory, Inc. |
SRAM 2M, 3.3V, 10ns FAST 128K x 16 Asyn SRAM
Сборник данных
Сравнение
| Min.:1 Mult.:1 | 8 Weeks | - | Surface Mount | 44-TSOP (0.400, 10.16mm Width) | - | 44 | 44-TSOP2 | Volatile | - | -40°C~85°C TA | Tray | 2001 | - | - | Active | 3 (168 Hours) | - | - | - | - | 85°C | -40°C | - | - | 3V~3.6V | - | - | - | - | - | - | - | - | - | - | - | - | - | - | Parallel | 3.6V | 3V | 2Mb 128K x 16 | - | - | - | 10ns | SRAM | Parallel | - | - | - | 10ns | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | ROHS3 Compliant | - | ||
| AS7C32098A-10TIN | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| | Mfr. ТипAS7C32098A-15TCNAnlielectronics Тип | Alliance Memory, Inc. |
SRAM 2M, 3.3V, 15ns, FAST 128K x 16 Asyn SRAM
Сборник данных
Сравнение
| Min.:1 Mult.:1 | 8 Weeks | - | Surface Mount | 44-TSOP (0.400, 10.16mm Width) | - | - | 44-TSOP2 | Volatile | - | 0°C~70°C TA | Tray | 2001 | - | - | Active | 3 (168 Hours) | - | - | - | - | 70°C | 0°C | - | - | 3V~3.6V | - | - | - | - | - | - | - | - | - | - | - | - | - | - | Parallel | 3.6V | 3V | 2Mb 128K x 16 | - | - | - | 15ns | SRAM | Parallel | - | - | - | 15ns | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | ROHS3 Compliant | - | ||
| AS7C32098A-15TCN | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
 | Mfr. ТипAS8C403600-QC150NAnlielectronics Тип | Alliance Memory, Inc. |
SRAM Chip Sync Dual 3.3V 4.5M-Bit 128K x 36 3.8ns 100-Pin TQFP
Сборник данных
Сравнение
| Min.:1 Mult.:1 | 8 Weeks | - | Surface Mount | 100-LQFP | YES | 100 | - | Volatile | - | 0°C~70°C TA | Tray | 2010 | - | yes | Active | 3 (168 Hours) | 100 | - | - | - | - | - | PIPELINED ARCHITECTURE | - | 3.135V~3.465V | QUAD | - | 1 | 3.3V | 0.65mm | - | - | - | 100 | - | - | 3.3V | 3.465V | 3.135V | - | - | - | 4Mb 128K x 36 | 2 | - | 150MHz | 3.8ns | SRAM | Parallel | - | - | 36 | 6.7ns | 17b | 4.5 Mb | - | - | - | - | - | - | - | - | - | 1.6mm | - | - | No | - | ROHS3 Compliant | Lead Free | ||
| AS8C403600-QC150N | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| | Mfr. ТипAS7C4096A-20JINAnlielectronics Тип | Alliance Memory, Inc. |
SRAM 4M, 3.3V, 20ns, FAST 512K x 8 Asynch SRAM
Сборник данных
Сравнение
| Min.:1 Mult.:1 | 8 Weeks | - | Surface Mount | 36-BSOJ (0.400, 10.16mm Width) | - | 36 | 36-SOJ | Volatile | Industrial grade | -40°C~85°C TA | Tube | 2001 | - | - | Active | 3 (168 Hours) | - | - | - | - | 85°C | -40°C | - | - | 4.5V~5.5V | - | - | - | - | - | - | - | - | - | - | - | 5V | - | - | Parallel | 5.5V | 4.5V | 4Mb 512K x 8 | 1 | - | - | 20ns | SRAM | Parallel | - | - | - | 20ns | 19b | 4 Mb | - | - | - | - | - | - | - | - | - | - | - | - | No | - | ROHS3 Compliant | Lead Free | ||
| AS7C4096A-20JIN | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| | Mfr. ТипAS4C4M16SA-7BCNAnlielectronics Тип | Alliance Memory, Inc. |
IC DRAM 64M PARALLEL 54TFBGA
Сборник данных
Сравнение
| Min.:1 Mult.:1 | 8 Weeks | - | Surface Mount | 54-TFBGA | YES | - | - | Volatile | Commercial grade | 0°C~70°C TA | Tray | 2015 | - | - | Active | 3 (168 Hours) | 54 | - | EAR99 | - | - | - | AUTO/SELF REFRESH | - | 3V~3.6V | BOTTOM | NOT SPECIFIED | 1 | 3.3V | 0.8mm | - | - | NOT SPECIFIED | - | S-PBGA-B54 | - | - | 3.6V | 3V | - | - | - | 64Mb 4M x 16 | 1 | SYNCHRONOUS | 143MHz | 5.4ns | DRAM | Parallel | 4MX16 | - | 16 | 2ns | - | - | - | 67108864 bit | - | - | - | - | - | - | - | 1.2mm | 8mm | 8mm | - | - | ROHS3 Compliant | - | ||
| AS4C4M16SA-7BCN | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
 | Mfr. ТипAS6C1616A-55BINAnlielectronics Тип | Alliance Memory, Inc. |
SRAM 16M, 2.7-3.6V, 55ns 1024K x 16 Asyn SRAM
Сборник данных
Сравнение
| Min.:1 Mult.:1 | 8 Weeks | Surface Mount | Surface Mount | 48-VFBGA | - | 48 | - | Volatile | - | -40°C~85°C TA | Tray | 1997 | - | yes | Active | 3 (168 Hours) | 48 | - | - | - | - | - | - | - | 2.7V~3.6V | BOTTOM | - | 1 | 3.3V | 0.75mm | - | 1MHz | - | 48 | - | - | 3.3V | 3.6V | 2.7V | - | - | - | 16Mb 1M x 16 | 1 | - | - | - | SRAM | Parallel | - | - | - | 55ns | 20b | 16 Mb | - | - | - | 55 ns | - | - | - | - | 700μm | - | 8.05mm | 10.05mm | No | - | ROHS3 Compliant | Lead Free | ||
| AS6C1616A-55BIN |
Индекс :
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