This standard specifies the general requirements, test methods and quality assessment procedures for SMB type RF coaxial connectors. This standard applies to RF connectors with push-in locking connection mechanisms, which are used in RF circuits of radio equipment and electronic instruments to connect various RF coaxial cables and are intended for use in microwave applications where low-power connectors are required. The characteristic impedance is 50Ω. GB/T 14865-1993 SMB type RF coaxial connector GB/T14865-1993 Standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
SMB type RF coaxial connector
R. F coaxial cohnectors of type SMB1 Subject content and applicable scope
1.1 Subject content
CB/T14865-93
This standard specifies the general requirements, test methods and quality assessment procedures of SMB type RF coaxial connectors. This standard is used together with GB11313 RF coaxial connector general specification. 1.2 Scope of application
This standard applies to RF connectors with push-in locking connection mechanism, which are used in the radio circuit of radio equipment and electronic instruments to connect various RF coaxial cables and are intended for microwave applications requiring low-power connectors. The characteristic impedance is 50α. 1.3 Model naming
1.3.1 Composition of the model
SMB model consists of three parts: old name code, structural form code and horizontal line number. SMB××××-××
1.3.2 Main code: SMB
1.3.3 Structural form
Approved by the State Administration of Technical Supervision on 1993-12-30 and implemented on 1994-10-01
Socket connector
Pin connector
Needle-needle adapter
Hole-hole adapter
Needle-needle-needle adapter
Hole-hole-hole adapter
Needle-hole-needle adapter
Hole-needle adapter
Hole-needle-hole adapter
1 Straight connector~
Adapter)
GB/T14865-93
SMB X × ×
Cable number (see Table 1)
-1 The inner and outer conductors of the connector and the cable are both welded-2 The inner conductor of the connector and the cable is welded, and the outer conductor is clamped-3 The inner conductor of the connector and the cable is welded, and the outer conductor is crimped-4 The inner and outer conductors of the connector and the cable are both crimped-5 The inner conductor of the connector and the cable is crimped, and the outer conductor is clamped-6 The inner and outer conductors of the connector and the cable are clamped-7 No cable connected
-8 The tail of the connector is a microstrip
-9 Others
Free-terminated cable
Flange installation for cable connection
Nut installation for cable connection
Printed circuit installation
12 Bend connector (
Adapter>
3 Three-way adapter group
Horizontal number
4 Straight sealed adapter
Note: 1) Connectors that are not connected to cables are not marked with horizontal line numbers. Lee-style sealed connector
Flange installation without cable
Nut installation without cable
Free end adapter
Adapter with nut installation
Adapter with flange installation
Cable plastic number
SFF-50-1www.bzxz.net
SYV-50-1
SFF-50-1. 5-1
SYV-50-2-1
1.3.4 Model composition example
Example 1; SMB0104-04
GB/T 14865—93
Indicates a straight plug connector, equipped with SYV-50-2-1 cable, the cable installation method is that the inner and outer conductors are both crimped, and the serial number is 4. Example 2: SMB0201-01
indicates a jack angle connector, which is used with SFF-50-1 cable. The cable connection method is that the inner and outer conductors are welded, and the serial number is 1. Example 3, SMB1157
indicates a pin straight connector, which is installed in a nut and is not connected to a cable, and the serial number is 7. Example 4: SMB2177
indicates a nut-mounted straight pin-pin adapter, which is not connected to a cable, and the serial number is 7. 1.3.5 Grade marking
Grade 0-
Standard test connector (G0)
Grade 1-High performance connector (G1)
Grade 2-
General connector
Grade 2 connectors may not be marked with equal suffixes.
1.4 Rated value
1.4.1 Frequency range
The connector of the matching cable can work effectively in accordance with the requirements of this standard within the frequency range of 300OMHz. If the reflection coefficient of the straight connector is allowed to be greater than 0.15 and the reflection coefficient of the curved connector is allowed to be greater than 0.24, it can be used for higher frequencies. 1.4.2 Rated voltage
500V (effective value) at sea level. 100V (effective value) under 5.4kPa air pressure conditions. 1.5 Climate category
55/155/21
For polyethylene cable, it is 40/085/21. 2 Reference standards
GB2828 Batch inspection counting sampling procedure and sampling table (applicable to inspection of continuous batches) GB11313 General specification for radio frequency coaxial connectors
GB12270 Electrical test and measurement procedures for RF coaxial connectors Shielding efficiency GR/T 14557 Electrical test and measurement procedures for radio frequency coaxial connectors Reflection coefficient 3 Technical requirements
3.1 Structural dimensions
3.1.1 Dimensions of connection part of universal connector (grade 2) All structural dimensions without marked dimensions in the small figure are for reference only. 3.1.1.1 Connectors with pin center contacts (pin connectors) 2
GB/T14865-93
Center key contact figure
Detailed drawing E selection
Figure 1 Pin connector
Note, C) Reference plane, that is, the center section of the concave, minimum
GB/T14865-93
Continued Figure 1
② The outer diameter of the inner conductor and the inner diameter of the uniform transmission line segment (external body) are determined according to the requirement of characteristic impedance of 500. ③ The shape of the top is optional,
4) The shape of the protrusion is optional.
2Connector with socket center contact (socket connector) 3. 1. 1. 2
②/diameter
Nominal value
/diameter
②Nominal diameter
Note: () Reference plane, that is, the center gingival surface of the convex white. @
GB/T14865-93
Detailed drawing of center contact
Figure 2 Jack connector
③The convex shape and size of the outer conductor meet the electrical and mechanical requirements, and the maximum
()Inner diameter of the inner conductor and the inner diameter of the transmission line segment (outer conductor>) are determined according to the requirement of characteristic impedance of 50n.() The aperture after closing should meet the electrical and mechanical requirements. Note
②/diameter
③/diameter
③/nominal diameter
3.1.2 Standard gauge
GB/T 14865-93
3.1.2.1 Standard gauge for connectors with jack center contacts Standard gauge A
Material: steel, polished; surface roughness R, = 0. 4μm (for stable dimensions)
Standard gauge B
(for measuring the retention force of the center contact)
Standard gauge mass 28±1g
Figure 3 Standard gauge for the center contact of the socket connector 3.1.2.2 Standard gauge for the external contact of the plug connector 3
Details
Return to the country
1 Standard gauge for the external contact of the plug inverter
GB/T 14865—93
Standard gauge A
(for use in the ruler)
Material: copper, polished surface roughness R, -0.4umma
Continued Figure 4
Note: () Base surface, the center section of the concave. (②) The inner conductor and insulator of the pin connector can enter the inner hole. ③ The rounding or chamfering is allowed, with a maximum of 0.38mm. 3.1.3 Standard test connector (G0)
Standard gauge B
(Measurement of external contact retention force)
Standard gauge mass: 800 = 10g
When measuring the reflection coefficient according to 14.1 of B11313, the standard test connector is mainly used for connection with the measuring equipment. 3.1.3.1 Standard test connector with pin center contact (G0) mm
GB/T 14865—93
Center receiving part details
-0,1113
Figure 5 Standard test connector for pin center contact (GO) Method: (1 Size not listed in this section is not listed in this section). 3. 1. 1 ② The reference plane, i.e. the center section of the groove, is used as the reference plane. Note: ④/diameter
③/diameter
?/diameter
The outer diameter of the inner conductor and the inner diameter of the transmission line segment (outer conductor) are determined according to the requirements of the characteristic interference of 50 gates (tested by time domain reflectometer). ④ The dielectric constant is 2.02 PTFE medium, and PTFE medium must be used. 1) The maximum absolute value of the left side (usually the cable side) relative to the base surface. 3.1.3.2 Standard push test connector with socket center contact (G0) GB/T 14865-93
Center hammer contact detail
Figure 6 Standard test connector with socket center contact (GO) code
Note, for dimensions not listed in this table, see 3.1.1.2. ② Reference plane, that is, the center section of the boss. GB/T 14865-93
Continued Figure 6
@/diameter
/diameter
/diameter
③/diameter
Example angle × 45°
③The outer diameter of the inner conductor and the inner diameter of the outer conductor of a uniformly connected line segment are determined according to the requirement of characteristic impedance of 50 (tested by a time-reflectometer). ③If the dielectric tape number is 2.02, the dimensions when using polytetrachloroethylene medium, and the case tetrachloroethylene medium must be used. @The dimensions when using a standard gauge of a pin with a diameter of 0.51mm. Type overview
Test category
Self-connected (straight type)
Fixed connector (single-hole panel mounting with radiated cable entry)
Free-end connector (bay type)
Fixed connector (single-hole back panel mounting with solder groove)
Fixed connector (4-hole panel mounting with solder groove)
GB/T14865—93
Contact
Model name1》
SMB010X-01
SMB010X-02
SMB010× -03
SME010×-04
SMB112X-01
SMB112X-02
SMB112X-03
SMB112X-04||t t||SMB020X-01
SMB020X-02
SMB020X-03
SMB020X-04
SMB115X
SMB114X
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