SMA RF coaxial connector is a RF coaxial connector with a threaded connection mechanism developed and produced according to the US military standard MIL-C-39012. It has the advantages of small size, wide bandwidth, excellent mechanical and electrical performance, and high reliability. It is one of the most widely used RF connectors. It is widely used in microwave communications, aerospace, weapon systems, microwave measurement equipment and other fields.
Main Technical Specifications:
◆ Characteristic Impedance: 50Ω
◆ Frequency Range: DC–26.5GHz
◆ Insulation Resistance: ≥5000MΩ
◆ Dielectric Withstand Voltage: 1000V(rms)
◆ Voltage Standing Wave Ratio (VSWR): ≤1.25
◆ Mating Cycles: 500 times

| Dim. Ltr. |
Inches(mm) | |
| Min. | Max. | |
| A | .255(6.48) | ------ |
| B | ------ | .1808(4.59) |
| C | ------ | .135(3.43) |
| D | .130(3.30) | ------ |
| E | .015(0.38) | .045(1.14) |
| F | .0355(0.90) | .0370(0.94) |
| G | ------ | .012(0.30) |
| H | ------ | .100(2.54) |
| J | .000(0.00) | ------ |
| K | .050(1.27) | ------ |
Notes:
1. Dimensions are in inches.
2. Metric equivalents are given for information only.
3. Connector interfaces (after mating) shall be kept free from dust and moisture.
4. May extend throughout the full length of the coupling nut.

| Dim. Ltr. |
Inches (mm) | |
| Min. | Max. | |
| A | .208 (5.28) | .216(5.49) |
| B | .1810(4.60) | ------ |
| C | .218(5.54) | ------ |
| D | .170(4.32) | ------ |
| E | 0.15(0.38) | .045(1.14) |
| F | .049(1.24) | .051(1.30) |
| G | .000(0.00) | .010(0.25) |
| H | .074(1.88) | .078(1.98) |
| J | .043(1.09) | .047(1.19) |
| K | .000(0.00) | .010(0.25) |
| M | .105(2.67) | ------ |
| N | .168 (4.27) | ------ |
Notes:
1. Dimensions are in inches.
2. Metric equivalents are for information only.
3. Previously qualified parts using a .030 inch (0.76) maximum contact recession are not acceptable for Govemment use. Caution should be exercised to determine whether a .030 recession design is being used during maintenance and part replacement.
4. Clearance for mating connector coupling nut.
5. Dimension to meet VSWR, mating characteristics, and connector durability when mated with a
+.0355/-.0370 inch diameter pin.
| Model | Cable Model | d | L |
| SMA-JB1 | SFT-50-1,670-047 | Φ1.2 | 12.5 |
| SMA-JB2 | SFT-50-2,670-086 | Φ2.2 | 11.2 |
| SMA-JB3 | SFT-50-3,670-141 | Ф3.6 | 12.0 |
| Model | Cable Model |
| SMA-JB3A | SFT-50-3,670-141 |
| Model | Cable Model |
| SMA-JB3E | SFT-50-3,670-141 |
| Model | Cable Model | d | L |
| SMA-JWB2 | SFT-50-2,670-086 | Φ2.2 | 15.6 |
| SMA-JWB3 | SFT-50-3,670-141 | Φ3.6 | 16 |
| Model | Cable Model | d |
| SMA-KB2 | SFT-50-2,670-086 | Φ2.2 |
| SMA-KB3 | SFT-50-3,670-141 | Φ3.6 |
| Model | Cable Model |
| SMA-J5 | SYV-50-3,RG142, SFCJ-50-3-51 |
| SMA-J5C |
| Model | Cable Model |
| SMA-(K)5 | SYV-50-3,RG142, SFCJ-50-3-51 |
| Model | Cable Model |
| SMA-J5.3 | 32055,205,GNB-415 |
| Model | Cable Model |
| SMA-JW2 | SYV-50-1 |
| SMA-JW3 | SYV-50-2-1,RG316 |
| SMA-JW4 | SYV-50-2-2 |
| SMA-JW5 | SYV-50-3,RG142,SFCJ-50-3-51 |
| Model | Cable Model |
| SMA-JW5-1 | SYV-50-3,RG142,SFCJ-50-3-51 |
| Model | Cable Model | d |
| SMA-KFB2 | SFT-50-2,670-086 | Φ2.2 |
| SMA-KFB3 | SFT-50-3,670-141 | Φ3.6 |
| Model | Cable Model | d |
| SMA-KFB2-1 | SFT-50-2,670-086 | Φ2.2 |
| SMA-KFB3-1 | SFT-50-3,670-141 | Φ3.6 |
| Model | Cable Model | d |
| SMA-KYB2 | SFT-50-2,670-086 | Φ2.2 |
| SMA-KYB3A | SFT-50-3,670-141 | Φ3.6 |
| Model | Cable Model | d |
| SMA-KYB3 | SFT-50-3,670-141 | Φ3.6 |
| Model | Cable Model |
| SMA-J2 | SYV-50-1 |
| SMA-J3 | SYV-50-2-1,RG316 |
| SMA-J4 | SYV-50-2-2 |
| Model | Cable Model |
| SMA-K2 | SYV-50-1 |
| SMA-K3 | SYV-50-2-1,RG316 |
| Model | Cable Model |
| SMA-K5 | SYV-50-3,RG142,SFCJ-50-3-51 |
| SMA-K5C |
| Model | Cable Model |
| SMA-(J)5 | SYV-50-3,RG142,SFCJ-50-3-51 |
| Model | Cable Model |
| SMA-KF2 | SYV-50-1 |
| SMA-KF3 | SYV-50-2-1,RG316 |
| Model | Cable Model |
| SMA-KY2 | SYV-50-1 |
| SMA-KY3 | SYV-50-2-1,RG316 |
| SMA-KY5 | SYV-50-3,RG142,SFCJ-50-3-51 |
| Model | L | L1 | L2 |
| SMA-JFD1 | 18 | 3 | 2 |
| SMA-JFD30 | 18 | 3 | 1.5 |
| SMA-JFD95 | 19 | 4 | 2 |
| Model | L | L1 | L2 | d |
| SMA-JFD2 | 18 | 3 | 2 | Φ0.7 |
| SMA-JFD31 | 18.5 | 3 | 2.5 | Φ1.0 |
| SMA-JFD59 | 25 | 3 | 9 | Φ1.0 |
| Model | L | L1 | L2 | d |
| SMA-JFD4 | 32 | 8 | 11 | Φ1.27 |
| SMA-JFD5 | 18 | 3 | 2 | Φ1.0 |
| SMA-JFD13 | 25 | 8 | 4 | Φ1.27 |
| SMA-JFD58 | 29.2 | 15 | 2 | Φ1.27 |
| Model | L | L1 | L2 | d |
| SMA-JFD6 | 32 | 8 | 11 | Φ1.27 |
| SMA-JFD7 | 25 | 8 | 4 | Φ1.27 |
| SMA-JFD8 | 31 | 15 | 3 | Φ1.27 |
| SMA-JFD9 | 18.2 | 3 | 2 | Φ1.27 |
| Model | L | L1 | L2 | d |
| SMA-KFD3 | 27.5 | 15 | 3 | Φ1.27 |
| SMA-KFD4 | 33.5 | 21 | 3 | Φ1.27 |
| SMA-KFD8 | 18.5 | 6 | 3 | Φ1.27 |
| SMA-KFD9 | 24.5 | 12 | 3 | Φ1.27 |
| SMA-KFD16 | 20.5 | 8 | 3 | Φ1.27 |
| SMA-KFD21 | 15.5 | 2 | 4 | Φ1.27 |
| SMA-KFD24 | 22.5 | 10 | 3 | Φ1.27 |
| SMA-KFD33 | 17.5 | 5 | 3 | Φ1.7 |
| Model | L | L1 | L2 | d |
| SMA-KFD46 | 16.5 | 4 | 3 | Φ1.27 |
| SMA-KFD52 | 16.5 | 2 | 5 | Φ1.0 |
| SMA-KFD53 | 20.5 | 6 | 5 | Φ1.0 |
| SMA-KFD87 | 15 | 3 | 2.5 | Φ0.7 |
| SMA-KFD133 | 15.5 | 4 | 2 | Φ0.7 |
| SMA-KFD146 | 22.3 | 7 | 5 | Φ1.0 |
| SMA-KFD147 | 18.5 | 4 | 5 | Φ1.0 |
| Model | L | L1 | L2 | d |
| SMA-KFD5 | 15.5 | 4 | 2 | Φ1.27 |
| SMA-KFD6 | 22.5 | 8 | 5 | Φ0.7 |
| SMA-KFD7 | 20.5 | 8 | 3 | Φ1.27 |
| SMA-KFD18 | 16 | 4 | 1.5 | Φ0.5 |
| SMA-KFD20 | 18.5 | 6 | 3 | Φ1.27 |
| SMA-KFD22 | 27.5 | 15 | 3 | Φ1.27 |
| SMA-KFD23 | 14.1 | 4 | 0.6 | Φ0.4 |
| SMA-KFD30 | 33.5 | 21 | 3 | Φ1.27 |
| SMA-KFD43 | 21.5 | 4 | 8 | Φ1.27 |
| SMA-KFD47 | 14 | 2 | 2.5 | Φ1 |
| Model | L | L1 | L2 | d |
| SMA-KFD61 | 16.5 | 4.5 | 2 | Φ1.27 |
| SMA-KFD62 | 17 | 3.5 | 4 | Φ1.27 |
| SMA-KFD63 | 19.5 | 3.5 | 4 | Φ1.27 |
| SMA-KFD64 | 18 | 3.5 | 5 | Φ1.27 |
| SMA-KFD65 | 19 | 4.5 | 5 | Φ1.27 |
| SMA-KFD66 | 20.5 | 4.5 | 6.5 | Φ1.27 |
| SMA-KFD71 | 15.5 | 4 | 2 | Φ0.7 |
| SMA-KFD122 | 21.5 | 6 | 6 | Ф1.2 |
| SMA-KFD123 | 14.5 | 2 | 3 | Φ1.2 |
| SMA-KFD144 | 19.5 | 9 | 1 | Φ1.0 |
| SMA-KFD177 | 20.5 | 8 | 3 | Φ1.27 |
| Model | L | L1 | L2 | d |
| SMA-KFD11 | 14.5 | 3 | 2 | Φ0.5 |
| SMA-KFD29 | 16.5 | 5 | 2 | Φ0.7 |
| SMA-KFD75 | 22.5 | 4 | 9 | Φ0.7 |
| SMA-KFD76 | 14.5 | 3 | 2 | Φ0.7 |
| SMA-KFD79 | 27.5 | 2 | 16 | Φ1.0 |
| SMA-KFD95 | 15.5 | 4 | 2 | Φ0.7 |
| SMA-KFD126 | 17.7 | 3 | 5.2 | Φ1.0 |
| SMA-KFD127 | 22.5 | 3 | 10 | Φ1.0 |
| SMA-KFD132 | 15.5 | 4 | 2 | Φ1.0 |
| SMA-KFD140 | 18.5 | 5 | 4 | Φ1.0 |
| Model | L | L1 | L2 | d |
| SMA-KFD31 | 15 | 3 | 2.5 | Φ1.0 |
| SMA-KFD32 | 21.5 | 3 | 9 | Φ1.0 |
| SMA-KFD34 | 17.5 | 3 | 5 | Φ1 |
| SMA-KFD80 | 16.5 | 3 | 4 | Φ0.7 |
| SMA-KFD100 | 16.5 | 5 | 2 | Φ0.7 |
| SMA-KFD101 | 15.5 | 4 | 2 | Φ0.7 |
| SMA-KFD102 | 14.5 | 3 | 2 | Φ0.7 |
| SMA-KFD130 | 21.5 | 3 | 9 | Φ0.7 |
| SMA-KFD131 | 15.5 | 4 | 2 | Φ1.0 |
| SMA-KFD134 | 17 | 5 | 2.5 | Φ0.7 |
| SMA-KFD136 | 19.5 | 4 | 6 | Φ1 |
| SMA-KFD163 | 18.7 | 3.2 | 5 | Φ1.0 |
| Model | d |
| SMA-KFD81 | M1 |
| SMA-KFD109 | M1.6 |
| Model | L | L1 | L2 | d |
| SMA-KFD119 | 17 | 6.5 | 1 | Φ3.0 |
| SMA-KFD121 | 18 | 6.5 | 2 | Φ3.0 |
| SMA-KFD141 | 17.5 | 4 | 4 | Φ3.2 |
| SMA-KFD142 | 18.3 | 7.8 | 1 | Φ3.0 |
| SMA-KFD149 | 17.5 | 3 | 5 | Φ3.0 |
| Model | L | L1 | L2 | d | D |
| SMA-KWFD3 | 26.7 | 11 | 4.5 | Φ1.27 | Φ4.1 |
| SMA-KWFD4 | 24.2 | 8 | 5 | Φ1.0 | Φ3.2 |
| SMA-KWFD5 | 24.2 | 8 | 5 | Φ0.7 | Φ4.1 |
| SMA-KWFD6 | 21.2 | 5 | 5 | Φ0.7 | Φ4.1 |
| SMA-KWFD7 | 24.2 | 3 | 10 | Φ0.7 | Φ4.1 |
| SMA-KWFD8 | 21.3 | 5 | 5 | Φ0.7 | Φ4.1 |
| SMA-KWFD9 | 16.2 | 3 | 2 | Φ0.7 | Φ4.1 |
| SMA-KWFD12 | 15.2 | 2 | 2 | Φ0.7 | Φ4.1 |
| SMA-KWFD49 | 25.2 | 5 | 9 | Φ0.17 | Φ4.1 |
| Model | L | L1 | h |
| SMA-JFD11 | 14 | 1 | 0.2 |
| SMA-JFD17 | 16 | 3 | 0.4 |
| SMA-JFD18 | 14 | 1 | 0.3 |
| SMA-JFD19 | 14 | 1 | 0.4 |
| SMA-JFD20 | 14 | 1 | 0.5 |
| SMA-JFD24 | 15 | 2 | 0.4 |
| Model | L | h |
| SMA-JFD12 | 13.1 | 0.4 |
| SMA-JFD14 | 13.1 | 0.55 |
| Model | L | L1 | L2 |
| SMA-KFD145 | 22.3 | 7.8 | 5 |
| SMA-KFD151 | 21 | 2.5 | 9 |
| SMA-KFD161 | 20.5 | 6.5 | 5 |
| SMA-KFD162 | 17.5 | 3 | 5 |
| Model | L | L1 |
| SMA-KWF | 14.6 | 3.3 |
| SMA-KWFD10 | 13.3 | 2 |
| Model | h |
| SMA-JFD16 | 0.2 |
| SMA-JFD21 | 0.3 |
| SMA-JFD22 | 0.4 |
| SMA-JFD23 | 0.5 |
| Model | h |
| SMA-KFD26 | 0.2 |
| SMA-KFD27 | 0.4 |
| SMA-KFD110 | 0.3 |
| SMA-KFD111 | 0.5 |
| Model | h |
| SMA-KFD112 | 0.2 |
| SMA-KFD113 | 0.3 |
| SMA-KFD114 | 0.4 |
| SMA-KFD115 | 0.5 |
| Model | L | L1 | t |
| SMA-KFD10 | 15.8 | 3 | 0.5×0.2 |
| SMA-KFD14 | 16.5 | 4 | 0.5×0.2 |
| SMA-KFD35 | 14.5 | 2 | 1.27×0.2 |
| Model | L | L1 | t | d | D |
| SMA-KFD13 | 16 | 4 | 0.5×0.2 | Φ4.1 | Φ4.2 |
| SMA-KFD14 | 15.2 | 3.2 | 0.5×0.2 | Φ4.1 | Φ4.2 |
| SMA-KFD35 | 15 | 3 | 1.27×0.2 | Φ4.1 | Φ4.2 |
| SMA-KFD45 | 14.4 | 2.4 | 0.5×0.2 | Φ4.1 | Φ4.2 |
| SMA-KFD68 | 15.2 | 3.2 | 0.5×0.2 | Φ2.1 | Φ2.2 |
| SMA-KFD73 | 16 | 4 | 1.27×0.2 | Φ4.1 | Φ4.2 |
| Model | t |
| SMA-KFD39 | 0.5×0.2 |
| SMA-KFD149 | 1.27×0.2 |
| Model | d | D |
| SMA-JFD40 | Φ0.5 | Φ3.0 |
| SMA-JFD41 | Φ0.45 | Φ2.8 |
| SMA-JFD42 | Φ0.38 | Φ2.5 |
| SMA-JFD44 | Φ0.3 | Φ2.0 |
| Model | d | D |
| SMA-JFD48 | Φ0.5 | Φ3.0 |
| SMA-JFD55 | Φ0.45 | Φ2.8 |
| SMA-JFD56 | Φ0.38 | Φ2.5 |
| SMA-JFD57 | Φ0.3 | Φ2.0 |
| Model | d | D |
| SMA-KFD40 | Ф0.5 | Φ3.0 |
| SMA-KFD41 | Φ0.45 | Φ2.8 |
| SMA-KFD42 | Φ0.38 | Φ2.5 |
| SMA-KFD44 | Φ0.3 | Φ2.0 |
| Model | d | D |
| SMA-KFD48 | Φ0.5 | Φ3.0 |
| SMA-KFD55 | Φ0.45 | Φ2.8 |
| SMA-KFD56 | Φ0.38 | Φ2.5 |
| SMA-KFD57 | Φ0.3 | Φ2.0 |
| SMA-KFD152 | Φ0.4 | Φ2.8 |
| Model | L |
| SMA-KHD | 13.5 |
| SMA-KHD10 | 18.5 |
| Model | A | d |
| SMA-KHD1 | 1.2 | Φ1.27 |
| SMA-KHD2 | 1.5 | Φ1.27 |
| SMA-KHD3 | 2 | Φ1.27 |
| SMA-KHD4 | 0.5 | Φ1.27 |
| SMA-KHD5 | 0.8 | Φ1.27 |
| SMA-KHD6 | 1 | Φ1.27 |
| SMA-KHD8 | 1.6 | Φ0.8 |
| SMA-KHD9 | 1.6 | Φ1.27 |
| SMA-KHD11 | 1 | Φ0.5 |
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