The 4.1/9.5 "Mini-DIN" RF connector has been designed as a compact and low PIM replacement to traditional 7/16 DIN connectors. The 4.1/9.5 connector features a screw on, low torque coupling system, which allows for a secure mate between connectors. As a matter of correctness the 4.1/9.5 connector is often, incorrectly, written as "4.1-9.5". The series can be supplied as IP68 certified from leading manufacturers and are an ideal drop-in replacement for broadcast applications utilising 7/16 DIN connectors. Their popularity has been fuelled by the increasing use of multiport and MIMO cellular base station antennas, with their 30% smaller form factor permitting higher density packing of connectors at the base of each antenna.

Alias
4.1/9.5 Mini-DIN
Impedance
50 Ω
Max. Operating Frequency
14.0 GHz
Mechanism
Screw-on Coupling
4.1/9.5 DIN male plug RF connector
4.1/9.5 Male
4.1/9.5 DIN female socket RF connector
4.1/9.5 Female

History

The connector was developed by SPINNER GmbH during the 1970s as an iterative improvement on their older and widely popular 7/16 DIN design.

Applications

4.1/9.5 connectors are low PIM by design (often reaching -165 dBc), making them ideal for mobile communication systems and wireless applications. These connectors are able to match the performance and mechanical robustness of a 7/16 connector in a 30% smaller footprint, and as such are suitable for a range of broadcast applications. The connector also finds its use as a replacement for N connectors in cellular DAS systems requiring PIM certification. With the introduction of the 4.3-10 RF connector, 4.1/9.5 connectors are becoming less common due to the newer 4.3-10 design offering near identical performance with a lighter weight and smaller form factor.

Male Dimensions (courtesy Rosenberger)

4.1/9.5 male plug RF connector CAD interface drawing
Legend Min Max
A
4.1300
B
9.4000
9.6000
C
11.8400
12.0200
D
24.0000
E
2.8550
2.9450
F M20 x 1
G
0.0000
1.0000
H
2.0000
4.0000
I
5.0500
5.3500

Female Dimensions

4.1/9.5 female socket RF connector CAD interface drawing
Legend Min Max
A
4.1300
B
9.4000
9.6000
C
12.0300
12.2100
D
14.9000
15.0000
E
F M20 x 1
G
4.7300
5.0300
H
5.8000
6.2000
I
8.0000