TWINAX/TRIAX CONNECTORS

Trompeter offers a broad line of connectors manufactured to

meet or exceed the Mil-Specs governing twinax connectors. In

fact, Mil-PRF-49142 was created from the Trompeter concentric

twinax/triax connector design.

The following information reects the specication requirements

for each family of connectors in both twinax and triax applications.

Use this chart to determine the proper connector type to be used

in your application, based on the environment and electrical

requirements of your design. Trompeter’s technical support team

is available to answer any specication questions you may have.

* Specications are minimum unless otherwise stated. Trompeter connectors are designed to exceed all minimum specications.

70 Series 80 Series 150 Series 450 Series

Characteristic Requirements TRB/TRT TRC/TRN TRS/TTM TCS

Nominal Impedance Non-constant Non-constant Non-constant Non-constant

Frequency Range 0-500 MHz 0-500 MHz 0-500 MHz 0-2 MHz

Voltage Rating (max.) @ sea level 400 VRMS 500 VRMS 400 VRMS 900 VRMS

Voltage Rating (max.) @ 70,000 ft. 100 VRMS 125 VRMS 100 VRMS N/A

Insulation Resistance 5000 MΩ 5000 MΩ 5000 MΩ 5000 MΩ

Dielectric Withstanding Voltage 1200 VRMS 1500 VRMS 1200 VRMS 900 VAC

(between center cond. & inter. cond.)

Dielectric Withstanding Voltage 500 VRMS 500 VRMS 500 VRMS 900 VAC

(between inter. cond. & outer cond.)

RF High Potential Withstanding Voltage 800 VRMS 1000 VRMS 500 VRMS 900 VAC @ 60 Hz

(between center cond. & inter. cond.)

RF High Potential Withstanding Voltage 200 VRMS 350 VRMS 125 VRMS N/A

(between inter. & outer cond.) @ 5-7.5 MHz @ 5-7.5 MHz

Specications continued on page 3...

MIL-Spec Triax

Series

Trompeter

Connector

Series

Bayonet Typi-

cal Lug Count

Available

Threaded

Gender

Equivalent Coax

Series

TRB 70 3 Yes Normal BNC

TRC 80 2 Yes Reverse N

TRS 150 3 Yes Normal M-BNC

1553 450 3 Yes Either n/a

The following is the latest list from the

MIL-STD-1553B supply:

Trompeter Number:

PL75-47

PL375C-201

PL75C-201

PL155AC-201

PL3155AC-201

PL155AC-201

PL3455ACS-201

PL455ACP-201

MIL-STD-1553B Data Bus General Specifications Guide

Twinax/Triax Connectors / Specifications

TWINAX/TRIAX CONNECTORS

* Specications are minimum unless otherwise stated. Trompeter connectors are designed to exceed all minimum specications.

MIL-STD-1553B Data Bus General Specifications Guide (cont’d)

Twinax/Triax Connectors / Specifications Twinax/Triax Connectors / Specifications

70 Series 80 Series 150 Series 450 Series

Characteristic Requirements TRB/TRT TRC/TRN TRS/TTM TCS

Corona Level (min.) 200 VRMS 375 VRMS 125 VRMS 250 VAC

@ 70,000 ft. @ 70,000 ft. @ 70,000 ft. @ 50,000 ft.

Rise Time Degradation (max.) 400 rs N/A 800 ps 800 ps

Permeability of Nonmagnetic Material <2.0 mu except hermetic versions

Hermetic Seal <1 x 10-8 cc/sec N/A <1 x 10-6 cc/sec N/A

(Where Applicable)

Connector Durability 500 cycles minimum @ 12 cycles per minute max.

Temperature Range -65° to +165°C -65° to +165°C -65° to +200°C -65° to 125°C

Force to Engage and Disengage

Longitudinal (max.) 4 pounds 5 pounds 4 pounds 3 pounds

Torque (max.) 2.5 inch-pounds 4 inch-pounds 2.5 inch-pounds 2.5 inch-pounds

Center Contact Retention

Axial Force (min.)

Plug 6 pounds 6 pounds 4 pounds 6 pounds

Jack 6 pounds 6 pounds 2 pounds 6 pounds

Coupling Proof Torque

(Threaded types only) 15 inch-pounds 15 inch-pounds 10 inch-pounds N/A

Coupling Mechanism Retention Force 100 pounds 100 pounds 70 pounds 100 pounds

(min.)

Cable Retention Force (min.) 40 pounds 65 pounds 40 pounds 40 pounds

.200-.325 inch .242-.419 inch .120-.215 inch .120-.180 inch

cable OD cable OD cable OD cable OD

Salt Spray (corrosion) 48 hrs minimum exposure (Standard nickel plating)

500 hrs minimum available (Call customer service for plating types). Standard for 450 Series.

Moisture Resistance (10 cycles) Total 240 hour minimum exposure

Thermal Shock (5 cycles) Total 5 hours 50 minutes min -65°C to +85°C -65°C to +125°C

(No physical damage/Pass DWV)

Specied Shock (sawtooth waveform, No discontinuity allowed. Velocity-change of shock pulse 10% of ideal value

within peak - 50g’s, duration -11ms)

Vibration, High-frequency (36 cycles) Total 12 hour minimum. No physical damage or loosening of parts.

(15g peak, 10-2000 Hz-10Hz in 20 minutes) No discontinuity allowed.

TWINAX/TRIAX CONNECTORS

Signals require protection from extraneous noise through non-

signal carrying shielding. These interfacing connectors must

provide contact surfaces isolated from each other, as well as from

the outer shield. Trompeter twinaxial/triaxial connectors are

designed with two (2) concentric contacts that are isolated from

each other and the shielding connection.

Features

• All metallic parts are machined/formed to extremely close

tolerances

• All bodies are made of top quality brass with bright nickel-

plated non-tarnish finish

• Fully enclosed, heat-treated, beryllium-copper outer

conductor spring (not half hard slotted brass)

• Heat-treated, beryllium-copper center socket contact with 50

millionths inch gold plating

These concentric twinax/triax connectors are ideal for applications

where weight is not a primary concern. They are commonly used

in digital data bus, video pair, MIL-STD-1553B (airborne/ground,

primary/redundant), base-band circuit and any application for

“noise-free guarded” circuits.

Features

• Same size as BNC/TNC connectors. Large body versions are

available to accommodate larger cables

• Field serviceable, wrench crimp versions for cables with up to

.475” outer diameters

• Tool crimp versions for quick termination of cables with up to

.250” outer diameters

• 3-lug, 4-lug, and threaded versions provide different levels of

mechanical stability and keying

• Does not require mechanical alignment for mating.

• QPL to MIL-C-49142 (see list on page 5)

• Meets MIL-C-49142, 48-hour salt spray requirement

• Special plating available to satisfy MIL-STD-1344, 500-hour

• salt spray requirement

• Push-on versions for test cable applications

• Fewer pieces to assemble

• Hermetically sealed versions are available (page 16)

70 Series

Miniature 2, 3, 4–lug, and Push-on (TRB)

370 Series

Miniature Threaded (TRT)

(70 Series shown below)

Built to Last

Premium Quality

Superior Mechanical Performance

Rugged Physical Properties

Extreme Reliability

Twinax/Triax Connectors

Part #	CJ70-47
Description	CONN TRB JACK STR CRIMP
Category	Microcircuit
Availability	Out of Stock
Qty	0

CJ70-47

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Technical Document