Side-by-Side Comparison
Jack Connectors
2.5mm TRS vs. Coaxial Cable Types (RG Series)
Comparing 2 standards across 13 specifications. 13 key differences identified.
Comparing:
2.5mm TRS
Coaxial Cable Types (RG Series)
2.5mm TRS is the smallest common member of the phone-connector family -- the same tip-ring-sleeve wiring as 3.5mm TRS, scaled down to a 2.5mm shaft. It was used for headset jacks on cordless phones, two-way radios, and early portable tape recorder remotes before 3.5mm became the standard smaller size.
Coaxial cables transmit high-frequency radio frequency (RF) and television signals under MIL-C-17 standards through a concentric center conductor, dielectric insulator, metallic shield, and outer jacket, categorized into 75-Ohm video/broadband series (RG-6, RG-59, RG-11) and 50-Ohm wireless/RF series (RG-58, RG-8X, LMR-400).
Specification Comparison Table
13 Parameters| Parameter / Spec | ||
|---|---|---|
|
Connector Family
|
Phone Jack (Micro-Mini) | — |
|
Shaft / Plug Diameter
|
2.5 mm | — |
|
Conductors / Contacts
|
3 (Tip, Ring, Sleeve) | — |
|
Signal Format
|
Unbalanced Stereo / Balanced Mono | — |
|
Standard Stereo Pinout
|
Tip: Left | Ring: Right | Sleeve: Ground | — |
|
Primary Applications
|
Cordless phones, two-way radios, legacy mobile headsets, micro audio gear | — |
|
Governing Standards
|
— | MIL-C-17 / SCTE (Society of Cable Telecom Engineers) / ANSI/TIA-568 |
|
RG-6 / RG-6 Quad Shield (75Ω)
|
— | Center Conductor: 18 AWG (1.02 mm) | Outer Dia: 6.86 mm (0.270") | Satellite TV, Cable DOCSIS 3.1, HDTV Antennas |
|
RG-59 (75Ω Legacy / CCTV)
|
— | Center Conductor: 20–22 AWG (0.81 mm) | Outer Dia: 6.15 mm (0.242") | Baseband analog CCTV, short-run composite video |
|
RG-11 (75Ω Long-Distance Drop)
|
— | Center Conductor: 14 AWG (1.63 mm) | Outer Dia: 10.3 mm (0.405") | Heavy low-loss underground long-run drops |
|
RG-58 (50Ω RF / Two-Way Radio)
|
— | Center Conductor: 20 AWG (0.90 mm) stranded | Outer Dia: 4.95 mm | CB Radio, amateur VHF/UHF, Wi-Fi pigtails |
|
LMR-400 (50Ω Ultra Low-Loss)
|
— | Center Conductor: 10 AWG (2.74 mm) solid copper-clad aluminum | Cellular towers, 2.4/5GHz Wi-Fi antenna masts |
|
Impedance Matching Rule
|
— | Never mix 50Ω and 75Ω systems; impedance mismatch causes high Standing Wave Ratio (SWR) and RF reflections |
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