BMZ
BMZ

The BMZ is government designation (Blindmate Z) and was originally developed in the 1980s by Automatic Connector as PMMA. This connector has low insertion forces and a light spring which allow for high density applications.

 

The BMZ is a miniaturized version of the BZ, a high-frequency connector with slide-on mating. This blindmate has a frequency range of DC-18 GHz and 50 ohms impedance with an interface controlled by MIL-STD-348. Plugs are float-mounted for use in blind-mate applications. BMZ blindmates preserve mechanical and electrical performance with interfacial misalignment features. They have an external spring to provide mechanical movement for extensive mechanical misalignment of ± .020 radial and .060 axial minimum.

 

 

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Features & Benefits

Interface

  • PTFE Dielectric
  • Wiping Outer Contact
  • Telescoping Insulators


Mechanical

  • Stainless Steel Bodies
  • Tapered Spring
  • .020 Radial Float
  • .060 Minimum Axial Float
  • Moisture Steel
  • Righ Angle Designs
  • Low Mating Forces

 

Applications
  • Military Radar

 

Technical Specifications

General

Materials

Body: Stainless steel per AMS-5640, UNS S30300, Type I

Contact: Beryllium Copper per ASTM-B-196

PTFE per ASTM-D-1710

Finish 

Body: Gold plated per ASTM-B-488 over nickel per SAE AMS-QQ-N-290

Class: 1 or passivate

Center Contact: Gold plated per ASTM-B-488 over Nickel per SAE AMS-QQ-N-290

Class: 1

Design

Interface dimensions per MIL-STD-348

 

Electrical

 

RG 405 (.085) Semi-Rigid

Frequency

DC to 18 GHz

Nominal Impedance

50 Ohms

VSWR

1.05 + .01f (GHz)

RF Transmission Loss

.06 x ?¯f (GHz)

Insulation Resistance

10,000 Megohms Min.

Contact Resistance

Center Contact 6.0

Outer Contact 3.0

Outer Contact to Cable

 

6.0 Milliohms Max.

3.0 Milliohms Max.

0.5 Milliohms Max.

Dielectric Withstanding Voltage

1,000 Volts RMS

Corona Extinction Voltage at 70,000 Ft.

250 Volts Min.

RF High Potential at 5 MHz

500 Volts RMS

RF Leakage

Interface Only

–(80-fGHz) dB Min.

(fully mated)

 

Mechanical

Force to Engage

12 Ounces Max.

Force to Disengage

2 Ounces Min.

Center Contact Retention

6 Pounds Min.

Durability

500 Cycles.

Radial Misalignment

Rigid Mount

Float Mount

 

± .0025 Inch

± .020 Inch

 

Environmental

Temperature Rating

–65°C to +125°C (Semi-Rigid)

Corrosion (Salt Spray)

MIL-STD-202, Method 101, Condition B

Vibration

MIL-STD-202, Method 204, Condition D, 20 Gs

Shock

MIL-STD-202, Method 213, Condition I, 100 Gs

Thermal Shock

MIL-STD-202, Method 107, Condition B, –65°C to +125°C

Moisture Resistance

MIL-STD-202, Method 106, Less Step 7B

Barometric Pressure (Altitude)

MIL-STD-202, Method 105, Condition C, 70,000 Ft.