0
Product Image

2.92 mm Connector Series

2.92 mm connectors are precision 50 Ω threaded coaxial interfaces designed for RF, microwave, and millimeter-wave signal transmission up to 40 GHz. Also known as K connectors, they are commonly used in test equipment, microwave modules, and high-frequency cable and PCB connections.

Coupling MechanismThreaded
Mating Cycles (Min)500
Frequency Max40 GHz
Impedance50 Ω
  • SMA and 3.5 mm mating compatibility
  • Cable-mount and solderless PCB options
  • Reduced contact wear during repeated mating
  • Suited to precision test and measurement
Fast Production OEM Direct100% VNA tested 100% VNA Tested
6 Products Found
Part / DescriptionActionsbody-materialimpedancefrequency-maxvswr-maxinsertion-lossvoltage-rating
2.92 mm Straight Plug 0.141 inch Conformable 50 Ohm

2.92 mm Straight Plug 0.141 inch Conformable 50 Ohm

P/N: 10072934

Details
Stainless Steel50 Ω40 GHz1.30:1 (-17.5 dB) Max200 VRMS Continuous Max
2.92 mm Straight Solderless PCB Jack Stripline 50 Ohm

2.92 mm Straight Solderless PCB Jack Stripline 50 Ohm

P/N: 10072947

Details
Stainless Steel50 Ω40 GHz1.30:1 (-17.5 dB) Max200 VRMS Continuous Max
2.92 mm Straight Solderless PCB Jack Microstrip 50 Ohm

2.92 mm Straight Solderless PCB Jack Microstrip 50 Ohm

P/N: 10073011

Details
Stainless Steel50 Ω40 GHz1.30:1 (-17.5 dB) Max200 VRMS Continuous Max
2.92 mm Straight Solder Jack RG-405 0.086 inch Conformable Bulkhead 50 Ohm

2.92 mm Straight Solder Jack RG-405 0.086 inch Conformable Bulkhead 50 Ohm

P/N: 10073030

Details
Stainless Steel50 Ω40 GHz1.30:1 (-17.5 dB) Max200 VRMS Continuous Max
2.92 mm Straight Plug RG-405 0.086 inch Conformable 50 Ohm

2.92 mm Straight Plug RG-405 0.086 inch Conformable 50 Ohm

P/N: 10073076

Details
Stainless Steel50 Ω40 GHz1.30:1 (-17.5 dB) Max200 VRMS Continuous Max
2.92 mm Straight Solder Jack 0.141 inch Conformable Bulkhead 50 Ohm

2.92 mm Straight Solder Jack 0.141 inch Conformable Bulkhead 50 Ohm

P/N: 10081467

Details
Stainless Steel50 Ω40 GHz1.30:1 (-17.5 dB) Max200 VRMS Continuous Max

Target Applications & Industries

RF test and measurement equipment
High-frequency PCB development
Microwave modules and instrumentation
5G and millimeter-wave testing
SATCOM and radar systems
Aerospace and defense electronics

2.92 mm RF Connector Design and Interface

The 2.92 mm designation refers to the inner diameter of the connector’s outer conductor. Its air-dielectric interface, shortened male pin, and reinforced outer conductor support repeatable mating with reduced contact wear. The interface is also mechanically compatible with SMA and 3.5 mm connectors, although the complete signal path remains limited by the lowest-rated component.

Available 2.92 mm K Connector Types

iPrece supplies cable-mount plugs and bulkhead jacks for 0.085/0.086-inch and 0.141-inch cable families, along with solderless PCB jacks for microstrip and stripline designs.

The available range falls into two installation categories:

  • Cable-mount 2.92 connectors

  • Solderless PCB-mount 2.92 connector

Products within these categories differ by gender, mounting arrangement, cable compatibility, and PCB transmission structure.

2.92 mm Connector Cable Mount

Cable-mount options include straight solder plugs and straight rear-mount bulkhead jacks. They are available for 0.085/0.086-inch cable families such as RG-405 and for 0.141-inch cable families such as RG-402, including semi-rigid and conformable variants. Plugs terminate the end of a cable, while bulkhead jacks create a fixed interface through an equipment panel or enclosure.

Solderless PCB-Mount 2.92 K Connector

PCB-mount options are straight solderless surface-mount jacks designed for either microstrip or stripline transmission structures. Their solderless attachment simplifies installation and removal while avoiding the variability introduced by a solder joint at the connector-to-board transition.

2.92 mm Connector Frequency Range and Specifications

The 2.92 mm connector frequency range extends from DC to 40 GHz, supporting microwave and millimeter-wave signal paths that exceed the typical operating range of standard SMA interfaces. All available models use a 50 Ω threaded interface, with specifications varying according to cable or PCB configuration.

Specification

Available range

Frequency range

DC to 40 GHz

Impedance

50 Ω

Connector gender

Plug and jack

Orientation

Straight

Coupling mechanism

Threaded

Termination

Cable solder or solderless PCB surface mount

Cable compatibility

0.085/0.086-inch and 0.141-inch semi-rigid and conformable cable families

PCB transmission structure

Microstrip or stripline

Body material

Stainless steel

Body finish

Gold-plated or passivated

Contact material

Gold-plated beryllium copper

Minimum mating cycles

500

Operating temperature

−65°C to +165°C for cable models; −65°C to +85°C for PCB models

The complete signal path must also be evaluated at the required operating frequency. Cable performance, PCB launch design, mating-interface condition, and installation quality can affect VSWR and insertion loss, even when the selected 2.92 mm K connector is rated to 40 GHz.

K Connector Selection Requirements

Most issues arise at the cable, PCB, or mating interface rather than the connector itself. Use the following checks to avoid common errors when selecting the right 2.92 mm connector:

  1. Verify full transition data (VSWR/return loss) where available. Poor cable choice or PCB launch can degrade the expected 40 GHz system performance.

  2. Match the connector to the specific PCB stack-up. Microstrip and stripline versions require different launch designs, so follow layout guidelines strictly.

  3. Match the correct cable family. 0.085/0.086 in and 0.141 in connectors are not interchangeable due to dimensional and impedance differences.

  4. Verify bulkhead access. Rear-mount jacks require internal installation; confirm panel thickness, hole size, and tool clearance early.

  5. Handle SMA mating carefully. Inspect pins, keep the body fixed, rotate only the nut, and use a torque wrench to spec.

  6. Plan for wear in test setups. Even with ~500-cycle ratings, contamination and overuse reduce life—use port savers for frequent connections.

  7. Check temperature ratings per type. Cable-mount up to +165°C; solderless PCB versions typically limited to +85°C.

Include cable/PCB details, mounting, frequency, environment, and test requirements in the RFQ for proper review.

Custom 2.92 mm RF Connector and OEM Support

iPrece can review custom cable-mount, bulkhead, and solderless PCB 2.92 mm connector requirements. Options may include alternative cable terminations, panel geometry, body finish, and PCB launches for specific microstrip or stripline stack-ups.

For technical review, provide:

  • Target frequency and VSWR or return-loss requirement

  • Cable family or PCB stack-up

  • Plug or jack gender and mounting arrangement

  • Temperature and mating-cycle requirements

  • Prototype and production quantities

  • Required drawings, test data, and compliance documents

OEM support can include part-number cross-referencing, prototype development, mechanical drawings, production supply, and 100% VNA testing by iPrece.

2.92 mm Connector FAQs

Is a K Connector the Same as a 2.92 mm K Connector? ↓
Yes. K connector is commonly used as an alternative name for the 2.92 mm precision RF interface. Individual construction and performance ratings may still vary by model.
2.92 Connector vs SMA: What Is the Difference? ↓
SMA is typically rated to 18 GHz, while 2.92 mm supports up to 40 GHz with a shorter pin and precision air-dielectric design. They can mate mechanically, but performance is limited by the SMA connector, and damaged or misaligned SMA plugs may harm 2.92 mm jacks.
Can a 2.92 Connector Mate with 3.5 mm or 2.4 mm Connectors? ↓
A 2.92 mm RF connector can mate directly with a 3.5 mm connector. It cannot mate directly with 2.4 mm or 1.85 mm interfaces; a precision adapter is required.
How Many Mating Cycles Can a 2.92 mm Connector Support? ↓
Available models are rated for at least 500 mating cycles. Actual service life depends on cleanliness, alignment, applied torque, and mating frequency. Use a port saver in test setups with frequent connections.
What Affects 2.92 mm RF Connector Pricing? ↓
Pricing depends on connector type, cable or PCB termination, materials, mounting, order quantity, and customization. VNA testing, drawings, compliance documents, and other acceptance requirements may also affect the quotation.
What Mating Torque Should Be Used for a K Connector? ↓
Standard 2.92 mm connectors are typically tightened to a maximum of 8 in-lb (0.9 Nm), unless the product documentation specifies otherwise. Use a calibrated torque wrench, hold the connector body stationary, and rotate only the coupling nut.