Southwest 1492-03A-14 2.40mm 50GHz Female End Launch Connector

The Southwest Microwave 1492-03A-14 is a precision 2.40mm female end launch RF connector designed for high-frequency PCB-to-coaxial transitions up to 50GHz. It features a narrow 0.350-inch thread-in mounting block, a 0.007-inch launch pin and a 0.0390-inch dielectric diameter.

For RF engineers selecting a 50GHz PCB connector, the main considerations include PCB thickness, transmission-line geometry, mounting accuracy and the quality of the coaxial-to-PCB transition.

This guide explains the specifications, PCB mounting requirements, related connector models and purchasing considerations for the 1492-03A-14.

1. Southwest Microwave 1492-03A-14 Overview

The 1492-03A-14 belongs to Southwest Microwave's 2.40mm precision end launch connector family. The series is intended for microwave and millimeter-wave applications requiring a transition between coaxial interfaces and PCB transmission lines.

The 1492-03A-14 uses a female 2.40mm interface with a thread-in narrow mounting block. Its nominal block width is 0.350 inch, distinguishing it from the 0.500-inch standard-block configurations available in the same connector family.

Key Features

• 50GHz capability: 2.40mm precision coaxial interface.

• Narrow mounting block: 0.350-inch thread-in configuration.

• Precision launch geometry: 0.007-inch center pin and 0.0390-inch dielectric diameter.

• Suitable for high-frequency PCB edge transitions.

• Female connector interface for compatible 2.40mm male connectors.

2. 1492-03A-14 Technical Specifications

The following parameters are based on the current Southwest Microwave product listing.

PCB thickness note: An earlier Southwest Microwave end launch connector brochure lists 0.040–0.110 inch for this model, while the current manufacturer product page specifies 0.040–0.090 inch. Confirm the approved board thickness and drawing revision before finalizing your PCB design.

For exact return loss, VSWR and insertion loss performance, consult the manufacturer's model-specific typical test data. A 50GHz interface rating alone does not guarantee a particular system-level RF performance.

3. PCB Thickness and Mounting Requirements

PCB thickness is one of the most important parameters when choosing an end launch connector. The connector mounting structure must match the PCB geometry to establish reliable mechanical alignment and an appropriate coaxial-to-planar RF transition.

3.1 PCB Thickness Compatibility

The current Southwest Microwave product page specifies a PCB thickness range of:

0.040 to 0.090 inch (approximately 1.02 to 2.29mm).

This is a mechanical compatibility range, not a guarantee of optimal RF performance for every PCB stack-up within that range.

When evaluating a PCB, verify:

• Overall board thickness and manufacturing tolerance.

• Substrate material and dielectric properties.

• Microstrip or grounded coplanar waveguide configuration.

• Signal trace width, ground clearance and copper thickness.

• Connector center-pin alignment with the signal trace.

• Mechanical mounting clearance and mounting-hole geometry.

3.2 Narrow Block Thread-In Mounting

The 1492-03A-14 features a narrow 0.350-inch thread-in mounting block. This configuration may be considered when the design requires a relatively narrow PCB-edge connector footprint.

Before selecting the connector, confirm the mechanical drawings for mounting-hole locations, fastener specifications, connector placement and required tool access.

Do not derive mounting-hole coordinates solely from the nominal 0.350-inch block dimension. Use the manufacturer's detailed installation drawing.

3.3 RF Launch Alignment

At microwave and millimeter-wave frequencies, even small discontinuities around the center pin, dielectric transition and adjacent ground region can affect impedance matching.

The PCB transmission line should be designed to provide an appropriate 50Ω transition to the connector's launch geometry.

Important considerations include:

• Accurate alignment between the center contact and PCB signal trace.

• Controlled ground-to-ground spacing near the transition.

• Suitable PCB edge quality and mechanical tolerances.

• Minimization of unwanted parasitic capacitance and inductance.

• Verification using RF simulation or representative test coupons.

Southwest Microwave provides technical literature on optimizing end launch connectors for high-frequency test boards. Consult these resources when developing a 50GHz transition.

4. PCB Installation: Recommended Engineering Workflow

The following steps are general design and installation guidance, not a replacement for the manufacturer's model-specific installation instructions.

Step 1: Confirm Connector and PCB Compatibility

Verify the exact part number, 2.40mm interface, PCB thickness, mounting block and center-pin dimensions. Obtain the latest installation drawing before releasing the PCB layout.

Step 2: Design the RF Transmission-Line Transition

Choose a suitable 50Ω microstrip or grounded coplanar waveguide structure based on the substrate stack-up. Optimize the transition geometry for the actual PCB material and thickness.

Step 3: Prepare Mechanical Mounting Features

Define mounting holes and PCB edge geometry according to the manufacturer's drawing. Ensure the connector can be installed without stressing the PCB or distorting the center contact.

Step 4: Install and Align the Connector

Inspect the PCB edge and connector contact surfaces. Position the connector carefully to maintain the intended signal and ground alignment.

Use the specified mounting hardware and manufacturer-approved tightening procedure. Do not assume that installation details for a different 1492 variant also apply to the 1492-03A-14.

Step 5: Verify RF Performance

After installation, evaluate insertion loss and return loss using appropriate calibrated RF test equipment.

Where practical, use a representative PCB test structure to separate connector-transition effects from transmission-line and device-under-test losses.

5. 1492-03A-14 vs Related Southwest Microwave Connectors

The Southwest Microwave 1492 series offers several connector configurations with different launch pin dimensions and PCB thickness requirements.

Thickness specifications follow the manufacturer's current product listings. Related models may require different mechanical and RF launch layouts.

The 1492-02A-14, 1492-03A-14 and 1492-04A-14 share a nominal 2.40mm interface and narrow block style, but their center-pin and dielectric diameters differ.

These variants should not automatically be considered drop-in replacements. Verify the launch geometry, PCB footprint and measured RF performance before changing the connector model.

6. Typical Applications

The Southwest Microwave 1492-03A-14 may be considered for high-frequency systems requiring precision PCB-to-coaxial transitions.

RF and Microwave Test Boards

Evaluation boards and laboratory test fixtures operating at microwave frequencies often require repeatable transitions between PCB transmission lines and coaxial measurement equipment.

50GHz PCB Evaluation Platforms

When compatible with the transmission-line layout and test frequency, a 2.40mm end launch connector can provide an external measurement interface for RF circuits.

Radar and High-Frequency Communications

High-frequency radar and communications subsystems may use precision connectors for testing, characterization and modular RF interconnection.

High-Speed RF Component Characterization

Amplifier, filter, mixer and other microwave component evaluation boards often require carefully designed coaxial-to-PCB interfaces to minimize measurement uncertainty.

Final suitability depends on actual frequency range, mechanical constraints and environmental requirements.

7. Common PCB Launch Design Problems

Problem: Poor Return Loss Near the Upper Frequency Limit

Possible causes include mismatched transition geometry, center-pin misalignment, inconsistent ground clearance or an unsuitable PCB stack-up.

Recommended action: Review the manufacturer's launch geometry guidance and validate the transition with RF simulation and VNA measurements.

Problem: Unexpected Insertion Loss

Insertion loss may be affected by PCB dielectric loss, conductor roughness, connector alignment, mating-interface condition and transition discontinuities.

Recommended action: Use a calibrated test configuration and compare results with a representative reference structure.

Problem: Mechanical Installation Does Not Fit

Incorrect PCB thickness, mounting-hole position, connector configuration or edge geometry can prevent proper installation.

Recommended action: Confirm the exact suffix and the latest mechanical drawing before modifying the PCB layout.

8. Official 1492-03A-14 Datasheet and Technical Resources

For current specifications, typical test data and mechanical information, refer to Southwest Microwave's official documentation.

•        Southwest Microwave 1492-03A-14 Official Product Page      

•        Southwest Microwave End Launch Connector Product List      

•        Southwest Microwave End Launch Connector Series Brochure (PDF)      

Technical document reminder: Product-page PCB thickness information differs from some older series literature. Request the latest approved installation drawing and performance data for the exact part number.

9. Southwest Microwave 1492-03A-14 Price, Availability and RFQ

Are you sourcing Southwest Microwave 1492-03A-14 for a PCB prototype, RF test fixture or production project?

DataStorageIC can assist with inquiries for this connector and related Southwest Microwave products. To obtain an accurate quotation, please provide:

• Manufacturer: Southwest Microwave

• Part Number: 1492-03A-14

• Required quantity and estimated annual demand

• Destination country or region

• Target delivery date

• Required technical or quality documentation

• PCB thickness and application details, if technical confirmation is needed

Pricing, available quantity and delivery time are subject to confirmation. No current stock level or fixed lead time is implied.

Request Pricing and Availability:    Contact DataStorageIC and submit your 1492-03A-14 requirements through the website inquiry form.

10. Related Products and Further Reading

Explore additional Southwest Microwave connectors and RF component options at DataStorageIC:

•        Southwest Microwave Connectors and Adapters       – Browse high-frequency RF connector products.

•        Southwest Microwave 2.40mm Connector Series       – Explore related 2.40mm connector configurations.

•        Southwest Microwave 1492-01A-5       – Learn about another 50GHz end launch connector.

Conclusion

The Southwest Microwave 1492-03A-14 is a 2.40mm female end launch RF connector offering 50GHz interface capability, narrow-block thread-in mounting and a precision 0.007-inch launch pin.

Successful implementation requires more than selecting the correct connector interface. Engineers must also verify PCB thickness, mechanical installation and the coaxial-to-PCB transition geometry.

For current datasheets, technical documentation, pricing and availability of the 1492-03A-14, contact DataStorageIC with your project requirements.