SMA和2.92mm连接器配接是否安全?
SMA连接器是一种常见的射频连接器,广泛用于无线通信和射频设备中。其名称来源于“SubMiniature version A”,设计旨在提供高频信号传输,通常用于连接天线、无线电设备和其他射频组件。
SMA界面
2.92mm界面
我们通常将SMA和2.92mm(K型)连接器视为配接连接器类型。但是,在配接SMA和2.92mm连接器类型时应谨慎的和需要注意很多地方。
要了解问题根本所在,我们得从标准谈起,我们需要查看这些不同连接器的机械规格。这些规范可以在MIL-STD-348B (美军标射频连接器界面标准)中找到,这是一份由美国国防后勤局创建和维护的军规规范文件,旨在“标准化射频连接器接口”。
在MIL-STD-348B中:
图310-1包含定义SMA引脚触点接口的图纸和尺寸:
图 310-2包含定义SMA插座触点接口的图纸和尺寸:
图 323-1包含定义2.92mm (SMK)SMK pin触点接口的图纸和尺寸:
图 323-2包含定义2.92mm( SMK )针式触点接口的图纸和尺寸:
现在,让我们看看SMA和2.92mm连接器类型之间的一些差异:
1) MIL-STD-348允许SMA连接器引脚比K型略长。(参见310-1维度H与323-1维度E)如果这些较长的针脚损坏或安装不完全笔直,它们更容易损坏脆弱的3.5和2.92毫米针套。如果引脚侧在连接时“意外”旋转,则尤其如此。
2) SMA连接器通常以较低的公差制造,因此您更有可能遇到处于MIL-STD-348公差边缘的SMA部件。这可能会加剧上述引脚长度问题,并导致2.92mm连接器的插槽损坏。
SMA是比较粗糙的,2.92比较精密,长期使用对2.92接头的损害是不言而喻的,这也会倒是测试测量精度的下降,尤其是一些低端的SMA头10元以下的,公差大的不得了,结果可想而知。
3) 请注意,3.5和2.92mm的插座周围使用空气电介质。SMA连接器使用符合MIL-PRF-39012 的固体PTFE (Teflon) 电介质。同样,与SMA的延长引脚长度相关,与具有实心PTFE电介质插件的SMA插座相比,将SMA脚重复插入3.5或2.92mm插座更有可能随着时间的推移使插座变形。
尽管如此,我们大多数情况仍将SMA和2.92mm连接器视为配对连接器。2.92mm可以向下兼容SMA频段。
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ITT(埃梯梯)Cannon 50欧姆射频连接器选型指南
目录- Company Profile and Products Introduction Connector/Cable Selection Guide PRECISION SMA Connectors COMMERCIAL SMA Connectors SMB/SMC Connectors SSMB/SSMC Connectors Coaxial Terminators Adaptors Sealflex2 Microwave Cable Assemblies Mounting Information Assembly Instructions Tooling Terms Interpretation 50 Ohm Connectors Part Number Index Product Safety Information
型号- A51 - 427 - 3196220,T2C75024,9188,050-645-4528890,055 - 607 - 9173890,F50-E27-9875000,051 - 075 - 0000220,065-9AS-2000000,F55 - E11 - 3702000,SMC?,RG188/U,RG142/U,055-939-9029AR6,050-000-0291000,B51 - 328 - 3196220,B50 - 328 - 3188220,K29265 5,41 (.213),F50 - E51- 0000000,050 - 027 - 0000220,050 - 674 - 6302310,050 - 675 - 0000890,055 - 607- 9172890,050 - 043 - 0000220,T1025/4 3,25 (.128),050-428-3188220,F50-E27-9188000,051-075-0000220,9875,K29263 *,A51 - 428 - 3196220,B51 - 053 - 9029220,050-645-4575890,B50-053-9019220,RG405/U,050-645-4540890,055-607-2003890,055 - 939 - 9059AR6,B51-051-9029220,050 - 443 - 0000220,050-674-0000890,F50- E28-9188890,TZC75024,065-9AS-0500000,RG405,T1025,T4899,RG402,050 - 675 - 6801890,050-653-0000310,B51-351-0000220,F50-E22-9875000,050 - 673 - 0000890,A50 - 624 - 9875890,T4897,T4898,RG396/U,RG187/U,F50 - E28 - 9875000,065-9AA-1000000,050 - 627- 9188890,F55-E11-3702000,F50-E22- 9188000,050-424-3196220,F50 - E22- 9188000,A51 - 453 - 0000220,055 - 939 - 9019AR6,051 - 027 - 9399220,K29263*,RG141/U,F55 - E07 - 9172000,050-674-6700890,B51 - 051 - 9029220,051-027-9399220,050-453-0000220,995-001-584,050-043-0000220,050 - 451 - 0000220,051-043-0000220,055-939-9039AR6,050 - 453 - 0000220,T1025/9,RD316,F50 - E28 - 9142000,B51 - 053 - 0000220,050-675-6801890,050 - 678 - 0000890,055 - 611- 3703890,051-443-0000220,050 - 645 - 9009890,A51 - 424 - 3196220,T0854/12/Z4,T0854/10D,F50 - E28 - 9188890,065-9AA-0500000,F50-E22-9142000,F50-E28-9141000,B50 - 051 - 9019220,065-9XX-XXXX000,B50-051-9019220,B51 - 024 - 9399220,B51-328-3188220,050 - 651 - 0000310,065-9AA-0750000,B51-024-9399220,F55 - E11 - 3703000,050 - 024 - 0000220,050 - 674 - 6700890,T1025/-,050 - 675 - 6705890,T0854/9/C,051-452-0000220,F55-E07-2003000,RG179/U,051-027-0000220,055 - 939 - 9069AR6,T0854/9/A,T1025/1,RG141,RG142,050-007-0000220,F55-E11-3703000,A50 - 624- 9188890,050 - 645 - 4528890,050 - 628- 9188890,051 - 027 - 0000220,055-611-3703890,K29263 *2,67 (.105),050 - 645 - 4540890,F50-E28-9875000,050 - 627- 9875890,051 - 427 - 3188220,050-674-6302310,A51 - 428 - 3188220,SEALFLEX 2™,F55-E07-9173000,B50-053-0000220,F50 - E28 - 9141000,055 - 939 - 9029AR6,065-9SS-0500000,B51-024-0000220,051 - 047 - 0000220,051-045-0000220,RG178/U,050-628-9875890,065-9AA-1500000,055 - 611- 3702890,F50 - E22 - 9141000,050 - 045 - 0000220,050 - 445 - 0000220,050-673-0000890,050-000-0290000,B50 - 051 - 0000220,055-607-9173890,F50-E22-9141000,F50-E28-9142000,A51 - 428 - 3875220,065-9SS-2000000,A50-624-9875890,050 - 428 - 3196220,B51 - 328 - 9399220,RD316*,050-675-6705890,F50-E53-0000000,T0854/7/M,051 - 452 - 0000220,050-451-0000220,050-445-0000220,051- 027-0000220,055 - 939 - 9039AR6,051-047-0000220,051 - 045 - 0000220,051-445-0000220,050 - 645 - 9019890,BT3002,SMA,B50 - 053 - 0000220,050-000-0000000,T0854/12/E,SMC,SMB,T1025/1 2,67 (.105),A51-427-3196220,RD179*,050-428-3196220,050-622-9188890,051 - 445 - 0000220,050-678-0000890,055 - 607- 2003890,B51-328-9399220,050-424-3188220,051-424-3188220,055-939-9049AR6,T0854/7/G,B50-328-9399220,A50-624-9188890,A51-428-3188220,F55 - E07- 2003000,050 - 674 - 6324990,F55-E07-9172000,R6196/U,RG316/U,B51 - 328 - 3188220,065-9AA-2000000,B51 - 351 - 0000220,050-622-9875890,F50 - E22 - 9142000,051 - 043 - 0000220,051 - 443 - 0000220,055-611- 3702890,B51 - 024 - 0000220,A51-453-0000220,055-607-9172890,051- 027-9399220,A51-428-3875220,050 - 622 - 9188890,A51-424-3196220,050 - 653 - 0000310,051-427-3188220,055-611-3702890,065-9SS-1000000,050 - 645 - 4575890,F50-E28-9188000,050-047-0000220,050-628-9188890,B50 - 053 - 9019220,050-074-6201310,F50 - E22 - 9875000,T0854/8/C,050-675-0000890,RG402/U,050 - 424 - 3188220,050-674-6324990,055 - 939 - 9049AR6,F50 - E27 - 9875000,B51 - 024 - 3196220,K29265,K29263,RG174/U,9142,9141,A51-428-3196220,F50-E51-0000000,F50-E22-9188000,050 - 622 - 9875890,051 - 027 - 3196220,055-939-9019AR6,A51 - 451 - 0000220,B51-328-9019AU0,065-9AS-1000000,B50-051-0000220,F50 - E53- 0000000,055-939-9059AR6,B50-328-3188220,T0854/10/D,050-627-9188890,051-027-3196220,050 - 424 - 3196220,050 - 047 - 0000220,050-000-0292000,050-627-9875890,K29263 * 3,25 (.128),B51-053-9029220,050-027-0000220,065-9AA-0300000,RD179,050 - 074 - 6201310,RG196/U,050-024-0000220,SSMC,F55 - E07 - 9173000,SSMB,050 - 428 - 3188220,T1025/9 3,84 (.151),051 - 424 - 3188220,A51-451-0000220,B51 - 328 - 9019AU0,050-651-0000310,B50 - 328 - 9399220,050 - 628 - 9875890,B51-053-0000220,B51-328-3196220,F50 - E27 - 9188000,RG316,050-045-0000220,055-939-9069AR6,065-9SS-3000000,050-443-0000220,050 - 674 - 0000890,050-645-9009890,B51-024-3196220,050 - 007 - 0000220,R6141/U
恒利泰“射频(RF)”连接器系列:信号沟通的桥梁
本篇主要介绍射频(RF)连接器中的几款经典产品,它们主要作为传输信号连接或分离的元件,起到桥梁连接的作用。它们通过提供稳定的电气连接,减少信号损失和干扰,保证信号质量从发送端到接收端的完整性。随着通信技术的不断发展,对此类连接器的需求一直在不断增加,特别是在5G及未来通信技术中,它们的作用将更加重要。
器件选型 发布时间 : 2024-07-13
骏晔科技(DreamLNK)胶棒天线/吸盘天线/FPC天线/弹簧天线/连接头、线/陶瓷天线选型指南(英文)
目录- Introduction of DreamLNK Rubber Rod Antenna Sucker Antenna FPC Antenna Spring Antenna SMA Connector/RF Cable/RF Connector Ceramic Antenna Other Antennas Application Range of Different Frequencies
型号- W7,W8,W9,T1,T2,T3,T4,T5,T6,T7,DL-J005,T8,DL-J006,T9,DL-J007,DL-J008,F1,F2,F3,F4,F5,F6,F7,T10,T11,T14,W10,T13,DL-J001,T16,DL-J002,T15,DL-J003,W1,T18,DL-J004,W2,T17,W3,W4,T19,W5,W6
小巧精致的金航标SMA连接器KH-SMA-KWE17-G,频率范围高达18GHz,适用于微波设备和数字通信系统
金航标公司出品的RF射频同轴连接器弯头,型号为KH-SMA-KWE17-G,是一款高性能的射频连接器。它采用金属镀金外螺内孔的设计,不仅具有美观的外观,还具备防水功能,能够在恶劣的环境中稳定运行。这款连接器不仅频带宽,性能优越,而且具有高可靠性和长寿命。它能够承受高达18GHz的信号频率,部分型号还可以支持到26.5GHz。同时工作温度范围为-55℃到+155℃,能够适应各种环境条件下的工作需求。
产品 发布时间 : 2023-10-27
REVERSE POLARITY For connecting WLAN antennas
型号- 4024.42.2420.023,4447.42.2410.083,4824.42.1410.043,4346.42.1410.043,K-2411,4344.42.1510.003,K-6424,K-2420,4026.42.2410.023,4401.42.1410.043,5474.42.1412.213,4423.42.1510.003,4858.42.1412.243,2963.42.1414.213,4023.42.1610.003,4345.42.1520.001
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可定制卫星定位天线协议:GPS、北斗、伽利略 (Galileo) 、格洛纳斯(GLONASS)卫星定位;增益:5~25dBi;驻波比:≤1.5;接口连接器:IPEX:1~5代IPE、SMA接口/公头等。
最小起订量: 1000 提交需求>
可定制胶棒天线频率范围包括GSM/GRPS/2G/3G/5G/2.4G/5G/5.8GHZ/WIFI/蓝牙、LoRa、433/470/315/868/915Mhz/NB等;增益:0~15dBi;天线尺寸、接口连接器可按需定制。
最小起订量: 1000 提交需求>
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