类别是'逻辑 - 多谐振荡器'
逻辑 - 多谐振荡器 (977)
图片 | 产品型号 | 品牌 | 数据表 | 有效性 | 单价(CNY) | 询价 | 认证 | 工厂交货时间 | 生命周期状态 | 触点镀层 | 底架 | 安装类型 | 包装/外壳 | 表面安装 | 引脚数 | 质量 | 操作温度 | 包装 | 已出版 | 系列 | JESD-609代码 | 无铅代码 | 零件状态 | 湿度敏感性等级(MSL) | 终止次数 | ECCN 代码 | 端子表面处理 | 最高工作温度 | 最小工作温度 | 附加功能 | 包装方式 | 最大功率耗散 | 电压 - 供电 | 端子位置 | 终端形式 | 峰值回流焊温度(摄氏度) | 功能数量 | 电源电压 | 端子间距 | 时间@峰值回流温度-最大值(s) | 基本部件号 | 引脚数量 | JESD-30代码 | 资历状况 | 工作电源电压 | 电源电压-最大值(Vsup) | 电源 | 温度等级 | 电源电压-最小值(Vsup) | 通道数量 | 电路数量 | 最大电源电压 | 最小电源电压 | 负载电容 | 输出电流 | 输出电流 | 比特数 | 传播延迟 | 静态电流 | 接通延迟时间 | 家人 | 逻辑功能 | 逻辑类型 | 上升时间 | 输出极性 | 最大 I(ol) | 高电平输出电流 | 低水平输出电流 | 电源电流-最大值(ICC) | 独立电路 | 施密特触发器输入 | 数据/时钟输入数量 | 高度 | 座位高度(最大) | 长度 | 宽度 | 器件厚度 | 辐射硬化 | 达到SVHC | RoHS状态 | 无铅 | |||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
![]() | SN74LS423DG4 | NA | 数据表 | N/A | - | 最小起订量: 1 倍率: 1 | 6 Weeks | ACTIVE (Last Updated: 6 days ago) | 表面贴装 | 表面贴装 | 16-SOIC (0.154, 3.90mm Width) | 16 | 141.690917mg | 2 | 0°C~70°C | Tube | 74LS | e4 | yes | 活跃 | 1 (Unlimited) | 16 | Nickel/Palladium/Gold (Ni/Pd/Au) | 4.75V~5.25V | DUAL | 鸥翼 | 260 | 2 | 5V | 74LS423 | 16 | 5V | 5V | 15pF | 8mA | 2 | 28ns | 12mA | 56 ns | LS | Multivibrator | Monostable | COMPLEMENTARY | 0.008 A | 无 | 2 | 1.75mm | 9.9mm | 3.91mm | 1.58mm | ROHS3 Compliant | 含铅 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | 74HCT221D,112 | Nexperia USA Inc. | 数据表 | N/A | - | 最小起订量: 1 倍率: 1 | 4 Weeks | 表面贴装 | 16-SOIC (0.154, 3.90mm Width) | YES | 16 | -40°C~125°C | Tube | 1997 | 74HCT | e4 | 活跃 | 1 (Unlimited) | 16 | Nickel/Palladium/Gold (Ni/Pd/Au) | NON-RETRIGGERABLE; TRIGGERABLE FROM CLEAR INPUT ALSO | 4.5V~5.5V | DUAL | 鸥翼 | 260 | 2 | 5V | 30 | 74HCT221 | 16 | 不合格 | 5.5V | 4.5V | 50pF | 4mA | 31ns | HCT | Monostable | COMPLEMENTARY | 2 | 有 | 2 | 1.75mm | 9.9mm | 3.9mm | ROHS3 Compliant | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | LTC6993HS6-2#TRPBF | Linear Technology/Analog Devices | 数据表 | N/A | - | 最小起订量: 1 倍率: 1 | 8 Weeks | 表面贴装 | SOT-23-6 Thin, TSOT-23-6 | YES | -40°C~125°C | Tape & Reel (TR) | 2012 | LTC®6993 | e3 | 活跃 | 1 (Unlimited) | 6 | EAR99 | Matte Tin (Sn) | 2.25V~5.5V | DUAL | 鸥翼 | 1 | 3.3V | 0.95mm | LTC6993 | 6 | R-PDSO-G6 | 5.5V | 2.5/5V | 2.25V | 11ns | Monostable | TRUE | 1 | 无 | 1 | 2.9mm | ROHS3 Compliant | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | SN74AHCT123ADBR | NA | 数据表 | N/A | - | 最小起订量: 1 倍率: 1 | 6 Weeks | ACTIVE (Last Updated: 1 week ago) | 表面贴装 | 表面贴装 | 16-SSOP (0.209, 5.30mm Width) | 16 | 128.593437mg | -40°C~85°C | Cut Tape (CT) | 74AHCT | e4 | yes | 活跃 | 1 (Unlimited) | 16 | EAR99 | Nickel/Palladium/Gold (Ni/Pd/Au) | TR | 4.5V~5.5V | DUAL | 鸥翼 | 260 | 2 | 5V | 0.65mm | 74AHCT123 | 16 | 5V | 5V | 2V | 2 | 50pF | 8mA | 2 | 5.3ns | 4μA | 15 ns | AHCT/VHCT/VT | Multivibrator | Monostable | COMPLEMENTARY | 0.008 A | 0.975mA | 有 | 2 | 2mm | 6.2mm | 5.3mm | 1.95mm | 无 | ROHS3 Compliant | 无铅 | ||||||||||||||||||||||||||||||||||||||||||||||||
![]() | TC4538BP(N,F) | Toshiba Semiconductor and Storage | 数据表 | N/A | - | 最小起订量: 1 倍率: 1 | 6 Weeks | 通孔 | 16-DIP (0.300, 7.62mm) | NO | -40°C~85°C | Tube | 2014 | 不用于新设计 | 1 (Unlimited) | 16 | 3V~18V | DUAL | 2 | 10V | R-PDIP-T16 | 18V | 3V | 100ns | 20mA | 4000/14000/40000 | Multivibrator | Monostable | COMPLEMENTARY | 2 | 无 | 2 | 4.45mm | 符合RoHS标准 | 无铅 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | TC74HC4538AF | Toshiba | 数据表 | N/A | - | 最小起订量: 1 倍率: 1 | HC | 2 | 43@6V|50@4.5V|250@2V | 315 | CMOS | -5.2 | 5.2 | 2 | 5|2.5|3.3 | 6 | 0.004 | -40 | 85 | SOP | SOP | 表面贴装 | 1.5 | 10.8(Max) | 5.3 | 16 | Gull-wing | Compliant | 16 | EAR99 | 卷带 | Obsolete | 16 | 单稳态多谐器 | 符合RoHS标准 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | LTC6993MPS6-3#TRPBF | Linear Technology/Analog Devices | 数据表 | N/A | - | 最小起订量: 1 倍率: 1 | 8 Weeks | 表面贴装 | SOT-23-6 Thin, TSOT-23-6 | YES | -55°C~125°C | Tape & Reel (TR) | 2012 | LTC®6993 | e3 | 活跃 | 1 (Unlimited) | 6 | EAR99 | Matte Tin (Sn) | 2.25V~5.5V | DUAL | 鸥翼 | 1 | 3.3V | 0.95mm | LTC6993 | 6 | R-PDSO-G6 | 5.5V | 2.5/5V | 2.25V | 11ns | Monostable | TRUE | 1 | 无 | 1 | 2.9mm | ROHS3 Compliant | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | LTC6993IDCB-3#TRPBF | Linear Technology/Analog Devices | 数据表 | N/A | - | 最小起订量: 1 倍率: 1 | 16 Weeks | 表面贴装 | 6-WFDFN Exposed Pad | YES | -40°C~85°C | Tape & Reel (TR) | 2012 | LTC®6993 | e3 | 活跃 | 1 (Unlimited) | 6 | EAR99 | Matte Tin (Sn) | 2.25V~5.5V | DUAL | 1 | 3.3V | 0.5mm | LTC6993 | 6 | R-PDSO-N6 | 5.5V | 2.5/5V | 2.25V | 11ns | Monostable | TRUE | 1 | 无 | 1 | 0.8mm | 3mm | 2mm | ROHS3 Compliant | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | 74LVC1G123GS,115 | Nexperia USA Inc. | 数据表 | N/A | - | 最小起订量: 1 倍率: 1 | 13 Weeks | 表面贴装 | 表面贴装 | 8-XFDFN | 8 | -40°C~125°C | Tape & Reel (TR) | 2014 | 74LVC | e3 | 活跃 | 1 (Unlimited) | 8 | Tin (Sn) | 1.65V~5.5V | DUAL | 无铅 | 1 | 3.3V | 0.35mm | 74LVC1G123 | 8 | 5.5V | 5.3ns | 20μA | LVC/LCX/Z | Multivibrator | Monostable | TRUE | 1 | 有 | 2 | 0.35mm | ROHS3 Compliant | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | CD74HCT423M96 | NA | 数据表 | N/A | - | 最小起订量: 1 倍率: 1 | 6 Weeks | ACTIVE (Last Updated: 3 days ago) | Gold | 表面贴装 | 表面贴装 | 16-SOIC (0.154, 3.90mm Width) | 16 | 141.690917mg | 2 | -55°C~125°C | Tape & Reel (TR) | 74HCT | e4 | yes | 活跃 | 1 (Unlimited) | 16 | EAR99 | RETRIGGERABLE | TR | 4.5V~5.5V | DUAL | 鸥翼 | 260 | 2 | 5V | 74HCT423 | 16 | 5V | 5V | 50pF | 4mA | 2 | 25ns | 8μA | 68 ns | HCT | Multivibrator | Monostable | COMPLEMENTARY | 0.004 A | 0.08mA | 无 | 2 | 1.75mm | 9.9mm | 3.91mm | 1.58mm | Unknown | ROHS3 Compliant | 无铅 | |||||||||||||||||||||||||||||||||||||||||||||||||
![]() | SN74AHCT123ADGVR | NA | 数据表 | N/A | - | 最小起订量: 1 倍率: 1 | 6 Weeks | ACTIVE (Last Updated: 1 week ago) | 表面贴装 | 表面贴装 | 16-TFSOP (0.173, 4.40mm Width) | 16 | 41.900595mg | -40°C~85°C | Cut Tape (CT) | 74AHCT | e4 | yes | 活跃 | 1 (Unlimited) | 16 | EAR99 | Nickel/Palladium/Gold (Ni/Pd/Au) | TR | 4.5V~5.5V | DUAL | 鸥翼 | 260 | 2 | 5V | 0.4mm | 74AHCT123 | 16 | 5V | 5V | 2V | 2 | 50pF | 8mA | 2 | 5.3ns | 4μA | 11 ns | AHCT/VHCT/VT | Multivibrator | Monostable | COMPLEMENTARY | 0.008 A | 0.975mA | 有 | 2 | 1.2mm | 3.6mm | 4.4mm | 1.05mm | 无 | ROHS3 Compliant | 无铅 | ||||||||||||||||||||||||||||||||||||||||||||||||
![]() | SN74LV221ADGVR | NA | 数据表 | N/A | - | 最小起订量: 1 倍率: 1 | 6 Weeks | ACTIVE (Last Updated: 2 days ago) | 表面贴装 | 表面贴装 | 16-TFSOP (0.173, 4.40mm Width) | 16 | 41.900595mg | 2 | -40°C~85°C | Tape & Reel (TR) | 74LV | e4 | yes | 活跃 | 1 (Unlimited) | 16 | EAR99 | Nickel/Palladium/Gold (Ni/Pd/Au) | TR | 2V~5.5V | DUAL | 鸥翼 | 260 | 2 | 2.5V | 0.4mm | 74LV221 | 16 | 5V | 3.3V | 2V | 50pF | 12mA | 2 | 13.2ns | 20μA | 14 ns | LV/LV-A/LVX/H | Multivibrator | Monostable | COMPLEMENTARY | 有 | 2 | 1.2mm | 3.6mm | 4.4mm | 1.05mm | 无 | ROHS3 Compliant | 无铅 | ||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | CD74HC423M96G4 | NA | 数据表 | N/A | - | 最小起订量: 1 倍率: 1 | 6 Weeks | ACTIVE (Last Updated: 1 week ago) | Gold | 表面贴装 | 表面贴装 | 16-SOIC (0.154, 3.90mm Width) | 16 | 141.690917mg | 2 | -55°C~125°C | Tape & Reel (TR) | 74HC | e4 | yes | 活跃 | 1 (Unlimited) | 16 | RETRIGGERABLE | TR | 2V~6V | DUAL | 鸥翼 | 260 | 2 | 4.5V | 74HC423 | 16 | 5V | 6V | 2V | 50pF | 5.2mA | 2 | 25ns | 8μA | 54 ns | HC/UH | Multivibrator | Monostable | COMPLEMENTARY | 0.08mA | 无 | 2 | 1.75mm | 9.9mm | 3.91mm | 1.58mm | ROHS3 Compliant | 无铅 | |||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | CD74HCT221M96G4 | NA | 数据表 | N/A | - | 最小起订量: 1 倍率: 1 | ACTIVE (Last Updated: 2 days ago) | Gold | 表面贴装 | SOIC | 16 | 141.690917mg | 2 | e4 | yes | 1 (Unlimited) | 16 | 125°C | -55°C | TR | DUAL | 鸥翼 | 260 | 2 | 5V | 16 | 5V | 5V | MILITARY | 5.5V | 4.5V | 50pF | 4mA | 2 | 18 ns | 8μA | 42 ns | HCT | Multivibrator | COMPLEMENTARY | 0.004 A | -4mA | 4mA | 0.08mA | 有 | 2 | 1.75mm | 9.9mm | 3.91mm | 1.58mm | 无 | 符合RoHS标准 | 无铅 | |||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | CD74HCT221MG4 | NA | 数据表 | N/A | - | 最小起订量: 1 倍率: 1 | 6 Weeks | ACTIVE (Last Updated: 1 week ago) | Gold | 表面贴装 | 表面贴装 | 16-SOIC (0.154, 3.90mm Width) | 16 | 141.690917mg | 2 | -55°C~125°C | Tube | 74HCT | e4 | yes | 活跃 | 1 (Unlimited) | 16 | NON-RETRIGGERABLE | 4.5V~5.5V | DUAL | 鸥翼 | 260 | 2 | 5V | 未说明 | 74HCT221 | 16 | 不合格 | 5V | 5V | 50pF | 4mA | 2 | 18ns | 8μA | 63 ns | HCT | Multivibrator | Monostable | COMPLEMENTARY | 0.004 A | 0.08mA | 有 | 2 | 1.75mm | 9.9mm | 3.91mm | 1.58mm | ROHS3 Compliant | 无铅 | ||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | CD74HC4538QM96Q1 | NA | 数据表 | N/A | - | 最小起订量: 1 倍率: 1 | 表面贴装 | 表面贴装 | 16-SOIC (0.154, 3.90mm Width) | 16 | 141.690917mg | Automotive grade | -40°C~125°C | Tape & Reel (TR) | Automotive, AEC-Q100, 74HC | no | Obsolete | 2 (1 Year) | 16 | 2V~6V | DUAL | 鸥翼 | 未说明 | 2 | 4.5V | 未说明 | 74HC4538 | 16 | 不合格 | 5V | 6V | 2V | 5.2mA | 21ns | 43 ns | HC/UH | Multivibrator | Monostable | COMPLEMENTARY | 2 | 有 | 2 | 1.75mm | 9.9mm | 3.9mm | ROHS3 Compliant | 含铅 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | HEF4047BT,652 | Nexperia USA Inc. | 数据表 | N/A | - | 最小起订量: 1 倍率: 1 | 4 Weeks | 表面贴装 | 14-SOIC (0.154, 3.90mm Width) | YES | 14 | -40°C~85°C | Tube | 2011 | 4000B | e4 | 活跃 | 1 (Unlimited) | 14 | Nickel/Palladium/Gold (Ni/Pd/Au) | 4.5V~15.5V | DUAL | 鸥翼 | 260 | 1 | 5V | 30 | 4047 | 14 | 3V | 2.4mA | 50ns | Astable, Monostable | COMPLEMENTARY | 1 | 无 | 2 | 8.65mm | 3.9mm | ROHS3 Compliant | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | CD74HCT123M | NA | 数据表 | N/A | - | 最小起订量: 1 倍率: 1 | 6 Weeks | ACTIVE (Last Updated: 4 days ago) | Gold | 表面贴装 | 表面贴装 | 16-SOIC (0.154, 3.90mm Width) | 16 | 141.690917mg | -55°C~125°C | Tube | 74HCT | e4 | yes | 活跃 | 1 (Unlimited) | 16 | EAR99 | RETRIGGERABLE | 4.5V~5.5V | DUAL | 鸥翼 | 260 | 2 | 5V | 74HCT123 | 16 | 5V | 5V | 2 | 50pF | 4A | 2 | 25ns | 8μA | 68 ns | HCT | Multivibrator | Monostable | 400ns | COMPLEMENTARY | 0.08mA | 无 | 2 | 1.75mm | 9.9mm | 3.91mm | 1.58mm | 无SVHC | ROHS3 Compliant | 无铅 | ||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | 74AHCT123ABQ-Q100X | Nexperia USA Inc. | 数据表 | N/A | - | 最小起订量: 1 倍率: 1 | 8 Weeks | Gold | 表面贴装 | 表面贴装 | 16-VFQFN Exposed Pad | 16 | Automotive grade | -40°C~125°C | Tape & Reel (TR) | 2010 | Automotive, AEC-Q100, 74AHCT | 活跃 | 1 (Unlimited) | 16 | 500mW | 2V~5.5V | QUAD | 2 | 5V | 0.5mm | 74AHCT123 | 16 | 5V | 5.1ns | 4μA | 7.1 ns | AHCT/VHCT/VT | Multivibrator | Monostable | COMPLEMENTARY | 2 | 无 | 2 | 1mm | 3.5mm | ROHS3 Compliant | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | CD4047BPWRE4 | NA | 数据表 | N/A | - | 最小起订量: 1 倍率: 1 | ACTIVE (Last Updated: 5 days ago) | Gold | 表面贴装 | TSSOP | 14 | 57.209338mg | 1 | Tape & Reel (TR) | e4 | yes | 1 (Unlimited) | 14 | 125°C | -55°C | RETRIGGERABLE | TR | DUAL | 鸥翼 | 260 | 1 | 5V | 14 | 12V | MILITARY | 18V | 3V | 50pF | 6.8mA | 1 | 80 ns | 20μA | 1 μs | Multivibrator | COMPLEMENTARY | 0.004 A | -4.2mA | 4.2mA | 0.06mA | 2 | 1.2mm | 5mm | 4.4mm | 1mm | 无 | 符合RoHS标准 | 无铅 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | 74HC123D-Q100,118 | Nexperia USA Inc. | 数据表 | N/A | - | 最小起订量: 1 倍率: 1 | 4 Weeks | 表面贴装 | 表面贴装 | 16-SOIC (0.154, 3.90mm Width) | 16 | Automotive grade | -40°C~125°C | Tape & Reel (TR) | 2014 | Automotive, AEC-Q100, 74HC | e4 | 活跃 | 1 (Unlimited) | 16 | Nickel/Palladium/Gold/Silver (Ni/Pd/Au/Ag) | 2V~6V | DUAL | 鸥翼 | 2 | 5V | 74HC123 | 16 | 5V | 6V | 2V | 25mA | 65ns | 8μA | 385 ns | HC/UH | Multivibrator | Monostable | COMPLEMENTARY | 2 | 无 | 2 | 1.75mm | 9.9mm | 3.9mm | ROHS3 Compliant | 无铅 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | CD74HCT4538M96E4 | NA | 数据表 | N/A | - | 最小起订量: 1 倍率: 1 | Gold | 表面贴装 | SOIC | 16 | 141.690917mg | 2 | Tape & Reel (TR) | e4 | 1 (Unlimited) | 16 | EAR99 | 125°C | -55°C | DUAL | 鸥翼 | 260 | 2 | 5V | 16 | 5V | 5V | MILITARY | 5.5V | 4.5V | 4mA | 83 ns | 8μA | 55 ns | HCT | Multivibrator | COMPLEMENTARY | -4mA | 4mA | 有 | 2 | 1.75mm | 9.9mm | 3.9mm | 无 | 符合RoHS标准 | 无铅 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | 74AHCT123ABQ,115 | Nexperia USA Inc. | 数据表 | N/A | - | 最小起订量: 1 倍率: 1 | 8 Weeks | Gold | 表面贴装 | 表面贴装 | 16-VFQFN Exposed Pad | -40°C~125°C | Tape & Reel (TR) | 2007 | 74AHCT | e4 | 活跃 | 1 (Unlimited) | 16 | 4.5V~5.5V | QUAD | 260 | 2 | 5V | 0.5mm | 30 | 74AHCT123 | 16 | R-PQCC-N16 | 5V | 5ns | 14 ns | AHCT/VHCT/VT | Multivibrator | Monostable | COMPLEMENTARY | 2 | 无 | 2 | 1mm | 3.5mm | ROHS3 Compliant | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | SN74121DE4 | NA | 数据表 | N/A | - | 最小起订量: 1 倍率: 1 | 6 Weeks | ACTIVE (Last Updated: 1 week ago) | 表面贴装 | 表面贴装 | 14-SOIC (0.154, 3.90mm Width) | 14 | 129.387224mg | 0°C~70°C | Tube | 7400 | e4 | yes | 活跃 | 1 (Unlimited) | 14 | Nickel/Palladium/Gold (Ni/Pd/Au) | 4.75V~5.25V | DUAL | 鸥翼 | 260 | 1 | 5V | SN74121 | 14 | 5V | 5V | 16mA | 1 | 45ns | 13mA | 80 ns | TTL/H/L | Multivibrator | Monostable | COMPLEMENTARY | 40mA | 2 | 无 | 3 | 1.75mm | 8.65mm | 3.91mm | 1.58mm | ROHS3 Compliant | 无铅 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | MC14538BFG | ON Semiconductor | 数据表 | N/A | - | 最小起订量: 1 倍率: 1 | 表面贴装 | 表面贴装 | 16-SOIC (0.209, 5.30mm Width) | 16 | -55°C~125°C | Tube | 2005 | 4000B | e4 | yes | Obsolete | 3 (168 Hours) | 16 | Nickel/Palladium/Gold (Ni/Pd/Au) | 3V~18V | DUAL | 鸥翼 | 260 | 2 | 5V | 40 | 4538 | 16 | 12V | 18V | 5/15V | 3V | 95ns | 700μA | 220 ns | 4000/14000/40000 | Multivibrator | Monostable | COMPLEMENTARY | 2 | 有 | 2 | 无 | 符合RoHS标准 | 无铅 |