Mfr Part #:

R125052901

Mfr Name: Radiall

SMA straight plug crimp connector for RG-405 semi-rigid cable. Features 50 Ohm impedance, 18 GHz max frequency, and gold-plated beryllium copper center contact.

✓ Total Stock: 1 pcs

$ Price Range: $48.97

R125052901 Available from 1 distributor

✓ Authorised

✓ Non-Authorised

Distributor		Stock	Pricing	MOQ	PKG	Lead Time	Date Code	On Order Quantity	On Order Delivery
Partservice ✓ Non-Authorised Inventory information	1 pcs On Request	1 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request

R125052901 Description

Short technical summary and product information.

The Radiall R125052901 is a straight SMA plug connector designed for crimp termination onto RG-405 (.085" semi-rigid) cable. It provides a 50 Ohm impedance and operates from DC to 18 GHz, making it suitable for high-frequency RF applications. The connector features a threaded coupling mechanism for secure mating and a silver-plated stainless steel body with passivated finish.

Electrical performance includes a maximum VSWR of 1.07 + 0.010 x F(GHz) (1.25 at 18 GHz), insertion loss of 0.03 √F(GHz) dB (0.127 dB at 18 GHz), and RF leakage of -(60 - F(GHz)) dB (-42 dB at 18 GHz). The voltage rating is 335 V peak, with dielectric withstanding voltage of 750 V peak and insulation resistance of 5000 MOhm minimum.

Mechanically, the connector offers center contact retention of 27 N at both ends, cable retention of 130 N, and a mating life of 500 cycles minimum. The recommended mating torque is 100 N.cm. Operating temperature range is -65°C to +105°C. The connector weighs 2.900 g and is packaged in standard quantities of 100 units.

R125052901 Quick Information

Product Type: Coaxial Connector (RF) Assembly

Series: SMA

Canonical Name: SMA Straight Plug, Male Pin, Crimp Termination, 50 Ohm, 18 GHz, for RG-405 Cable

Subcategory: Plug

R125052901 Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

R125052901 Estimated Pricing

Qty	Low	High
100+	$48.97	$48.97

Estimated market price range - modelled values for guidance only, not live distributor offers.

R125052901 Features

50 Ohm impedance for RF applications.
DC to 18 GHz frequency range.
Crimp termination for reliable connections.
Threaded coupling for secure mating.
Gold-plated beryllium copper center contact.

R125052901 Applications

Ideal for RF test and measurement setups.
Used in telecommunications infrastructure.
Suitable for microwave and satellite systems.
Common in aerospace and defense electronics.

R125052901 FAQs

7 frequently asked questions generated from this part’s specifications.

What is the voltage rating of this SMA connector?

The maximum voltage rating is 335 V peak (Veff).

What mounting type does this connector use?

Free hanging (in-line) mounting with threaded coupling.

What is the impedance of the R125052901?

50 Ohms.

What is the maximum operating frequency?

18 GHz.

What is the VSWR specification?

Maximum VSWR is 1.07 + 0.010 x F(GHz), which equals 1.25 at 18 GHz.

What is the operating temperature range?

-65°C to +105°C.

What cable is this connector designed for?

RG-405 (.085" semi-rigid) cable.

Category	Coaxial Connector (RF) Assemblies
Manufacturer Name	Radiall
Approval Agency	18 GHz
Cable Group	RG-405 (.085" Semi Rigid)
Center Contact Material	Beryllium Copper
Connector Style	SMA
Connector Type	Plug, Male Pin
Contact Termination	Crimp
Dielectric Withstanding Voltage	750 V
Fastening Type	Threaded
Frequency	18 GHz
Housing Color	Silver
Impedance	50 Ohm
Insertion Loss	0.03 √F(GHz) dB
Insulation Resistance	5000 MOhm
Mounting Type	Free Hanging (In-Line)
Number of Ports	1
Operating Temperature Range	-65°C to +105°C
Shield Termination	Crimp
VSWR	1.07 + 0.010 x F(GHz)
Voltage Rating	335 V
Weight	2.900 g